/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:57:12,707 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:57:12,795 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 02:57:12,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:57:12,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:57:12,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:57:12,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:57:12,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:57:12,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:57:12,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:57:12,836 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:57:12,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:57:12,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:57:12,837 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:57:12,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:57:12,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:57:12,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:57:12,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:57:12,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:57:12,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:57:12,839 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:57:12,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:57:12,840 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:57:12,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:57:12,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:57:12,841 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:57:12,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:57:12,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:57:12,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:57:12,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:57:12,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:57:12,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:57:12,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:57:12,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:57:12,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:57:12,844 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:57:13,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:57:13,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:57:13,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:57:13,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:57:13,207 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:57:13,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-08-27 02:57:14,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:57:14,768 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:57:14,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-08-27 02:57:14,786 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb9715b65/c54900ddaa624c1c9f9819f80fe23023/FLAGf55d75a9c [2023-08-27 02:57:14,799 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb9715b65/c54900ddaa624c1c9f9819f80fe23023 [2023-08-27 02:57:14,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:57:14,804 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:57:14,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:57:14,807 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:57:14,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:57:14,811 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:57:14" (1/1) ... [2023-08-27 02:57:14,812 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c9cbfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:14, skipping insertion in model container [2023-08-27 02:57:14,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:57:14" (1/1) ... [2023-08-27 02:57:14,859 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:57:15,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:57:15,095 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:57:15,126 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 02:57:15,127 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 02:57:15,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:57:15,193 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:57:15,193 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:57:15,199 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:57:15,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15 WrapperNode [2023-08-27 02:57:15,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:57:15,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:57:15,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:57:15,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:57:15,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,252 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2023-08-27 02:57:15,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:57:15,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:57:15,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:57:15,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:57:15,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,261 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:57:15,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:57:15,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:57:15,274 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:57:15,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (1/1) ... [2023-08-27 02:57:15,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:57:15,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:15,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 02:57:15,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 02:57:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 02:57:15,337 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 02:57:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 02:57:15,338 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 02:57:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:57:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 02:57:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:57:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:57:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:57:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:57:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 02:57:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:57:15,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:57:15,340 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 02:57:15,442 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:57:15,444 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:57:15,654 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:57:15,671 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:57:15,672 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 02:57:15,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:57:15 BoogieIcfgContainer [2023-08-27 02:57:15,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:57:15,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:57:15,676 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:57:15,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:57:15,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:57:14" (1/3) ... [2023-08-27 02:57:15,679 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2303efba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:57:15, skipping insertion in model container [2023-08-27 02:57:15,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:57:15" (2/3) ... [2023-08-27 02:57:15,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2303efba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:57:15, skipping insertion in model container [2023-08-27 02:57:15,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:57:15" (3/3) ... [2023-08-27 02:57:15,681 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2023-08-27 02:57:15,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:57:15,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 02:57:15,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:57:15,762 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 02:57:15,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 178 flow [2023-08-27 02:57:15,828 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-08-27 02:57:15,828 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:57:15,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 82 events. 6/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-27 02:57:15,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 84 transitions, 178 flow [2023-08-27 02:57:15,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 82 transitions, 170 flow [2023-08-27 02:57:15,840 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:57:15,848 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 82 transitions, 170 flow [2023-08-27 02:57:15,850 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 82 transitions, 170 flow [2023-08-27 02:57:15,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 170 flow [2023-08-27 02:57:15,869 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-08-27 02:57:15,869 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:57:15,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 82 events. 6/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-27 02:57:15,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 2304 [2023-08-27 02:57:18,300 INFO L134 LiptonReduction]: Checked pairs total: 2595 [2023-08-27 02:57:18,300 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-27 02:57:18,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:57:18,317 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;@62f848b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:57:18,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 02:57:18,319 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:57:18,319 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-27 02:57:18,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:57:18,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:18,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:57:18,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:18,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:18,324 INFO L85 PathProgramCache]: Analyzing trace with hash 10934624, now seen corresponding path program 1 times [2023-08-27 02:57:18,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:18,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400737744] [2023-08-27 02:57:18,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:18,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:18,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:18,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400737744] [2023-08-27 02:57:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400737744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:18,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:57:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106493305] [2023-08-27 02:57:18,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:18,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:18,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:18,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:18,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:18,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:57:18,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 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) [2023-08-27 02:57:18,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:18,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:57:18,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:18,693 INFO L124 PetriNetUnfolderBase]: 415/650 cut-off events. [2023-08-27 02:57:18,694 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 02:57:18,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 650 events. 415/650 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2587 event pairs, 159 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 1306. Up to 351 conditions per place. [2023-08-27 02:57:18,703 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 28 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-08-27 02:57:18,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 134 flow [2023-08-27 02:57:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:18,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-08-27 02:57:18,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2023-08-27 02:57:18,720 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-08-27 02:57:18,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-08-27 02:57:18,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:18,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-08-27 02:57:18,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:18,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:18,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:18,735 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 3 states and 249 transitions. [2023-08-27 02:57:18,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 134 flow [2023-08-27 02:57:18,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:18,738 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 72 flow [2023-08-27 02:57:18,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-27 02:57:18,746 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-08-27 02:57:18,746 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 72 flow [2023-08-27 02:57:18,746 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) [2023-08-27 02:57:18,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:18,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:57:18,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:57:18,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:18,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash 10934666, now seen corresponding path program 1 times [2023-08-27 02:57:18,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:18,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060161380] [2023-08-27 02:57:18,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:18,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:18,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:18,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060161380] [2023-08-27 02:57:18,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060161380] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:18,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:18,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:18,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032940227] [2023-08-27 02:57:18,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:18,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:18,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:18,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:18,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:18,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:18,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:18,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:18,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:18,986 INFO L124 PetriNetUnfolderBase]: 601/944 cut-off events. [2023-08-27 02:57:18,986 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-27 02:57:18,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 944 events. 601/944 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4286 event pairs, 309 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 2246. Up to 651 conditions per place. [2023-08-27 02:57:18,993 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 37 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-27 02:57:18,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 39 transitions, 206 flow [2023-08-27 02:57:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-27 02:57:18,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600389863547758 [2023-08-27 02:57:18,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-27 02:57:18,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-27 02:57:18,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:18,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-27 02:57:19,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,003 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 72 flow. Second operand 3 states and 236 transitions. [2023-08-27 02:57:19,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 39 transitions, 206 flow [2023-08-27 02:57:19,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 39 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:19,008 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 78 flow [2023-08-27 02:57:19,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-27 02:57:19,010 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-27 02:57:19,010 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 78 flow [2023-08-27 02:57:19,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:19,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:57:19,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:57:19,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:19,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:19,020 INFO L85 PathProgramCache]: Analyzing trace with hash 10934625, now seen corresponding path program 1 times [2023-08-27 02:57:19,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:19,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244020134] [2023-08-27 02:57:19,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:19,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:19,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244020134] [2023-08-27 02:57:19,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244020134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:19,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:19,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:57:19,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699178510] [2023-08-27 02:57:19,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:19,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:19,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:19,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:19,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:19,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:57:19,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 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) [2023-08-27 02:57:19,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:19,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:57:19,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:19,183 INFO L124 PetriNetUnfolderBase]: 581/952 cut-off events. [2023-08-27 02:57:19,183 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-27 02:57:19,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 952 events. 581/952 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4441 event pairs, 198 based on Foata normal form. 44/566 useless extension candidates. Maximal degree in co-relation 2386. Up to 582 conditions per place. [2023-08-27 02:57:19,189 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 31 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-08-27 02:57:19,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 198 flow [2023-08-27 02:57:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-08-27 02:57:19,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47173489278752434 [2023-08-27 02:57:19,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-08-27 02:57:19,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-08-27 02:57:19,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:19,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-08-27 02:57:19,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,194 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 78 flow. Second operand 3 states and 242 transitions. [2023-08-27 02:57:19,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 198 flow [2023-08-27 02:57:19,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 37 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:19,195 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 114 flow [2023-08-27 02:57:19,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-08-27 02:57:19,196 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-27 02:57:19,196 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 114 flow [2023-08-27 02:57:19,196 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) [2023-08-27 02:57:19,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:19,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 02:57:19,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:57:19,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:19,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:19,197 INFO L85 PathProgramCache]: Analyzing trace with hash 338975209, now seen corresponding path program 1 times [2023-08-27 02:57:19,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:19,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446179086] [2023-08-27 02:57:19,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:19,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:19,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:19,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446179086] [2023-08-27 02:57:19,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446179086] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:19,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489225901] [2023-08-27 02:57:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:19,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:19,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:19,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:19,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 02:57:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:19,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:57:19,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:19,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:19,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:57:19,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489225901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:19,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:57:19,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:57:19,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177440762] [2023-08-27 02:57:19,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:19,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:19,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:19,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:19,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:19,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:19,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:19,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:19,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:19,512 INFO L124 PetriNetUnfolderBase]: 505/834 cut-off events. [2023-08-27 02:57:19,512 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2023-08-27 02:57:19,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 834 events. 505/834 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3981 event pairs, 95 based on Foata normal form. 0/520 useless extension candidates. Maximal degree in co-relation 2264. Up to 340 conditions per place. [2023-08-27 02:57:19,518 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-27 02:57:19,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 57 transitions, 353 flow [2023-08-27 02:57:19,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:57:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:57:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-08-27 02:57:19,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2023-08-27 02:57:19,520 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-08-27 02:57:19,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-08-27 02:57:19,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:19,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-08-27 02:57:19,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,524 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,524 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 114 flow. Second operand 4 states and 312 transitions. [2023-08-27 02:57:19,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 57 transitions, 353 flow [2023-08-27 02:57:19,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 57 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:19,529 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 110 flow [2023-08-27 02:57:19,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-27 02:57:19,530 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-08-27 02:57:19,531 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 110 flow [2023-08-27 02:57:19,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:19,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:57:19,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:19,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:19,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:19,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:19,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1919052570, now seen corresponding path program 1 times [2023-08-27 02:57:19,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:19,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441216499] [2023-08-27 02:57:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:19,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:19,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:19,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441216499] [2023-08-27 02:57:19,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441216499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:19,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:19,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:19,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723907124] [2023-08-27 02:57:19,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:19,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:19,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:19,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:19,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:19,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:19,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:19,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:19,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:20,073 INFO L124 PetriNetUnfolderBase]: 521/920 cut-off events. [2023-08-27 02:57:20,074 INFO L125 PetriNetUnfolderBase]: For 675/675 co-relation queries the response was YES. [2023-08-27 02:57:20,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 920 events. 521/920 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4801 event pairs, 175 based on Foata normal form. 12/640 useless extension candidates. Maximal degree in co-relation 2617. Up to 665 conditions per place. [2023-08-27 02:57:20,080 INFO L140 encePairwiseOnDemand]: 161/171 looper letters, 44 selfloop transitions, 19 changer transitions 1/64 dead transitions. [2023-08-27 02:57:20,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 64 transitions, 410 flow [2023-08-27 02:57:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:57:20,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:57:20,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2023-08-27 02:57:20,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2023-08-27 02:57:20,082 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2023-08-27 02:57:20,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2023-08-27 02:57:20,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:20,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2023-08-27 02:57:20,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,085 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,086 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 110 flow. Second operand 5 states and 375 transitions. [2023-08-27 02:57:20,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 64 transitions, 410 flow [2023-08-27 02:57:20,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 64 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:20,088 INFO L231 Difference]: Finished difference. Result has 36 places, 43 transitions, 314 flow [2023-08-27 02:57:20,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=36, PETRI_TRANSITIONS=43} [2023-08-27 02:57:20,090 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-27 02:57:20,091 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 43 transitions, 314 flow [2023-08-27 02:57:20,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:20,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:57:20,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:57:20,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:20,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:20,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1919051912, now seen corresponding path program 1 times [2023-08-27 02:57:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109744796] [2023-08-27 02:57:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:20,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:20,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109744796] [2023-08-27 02:57:20,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109744796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:20,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:20,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:57:20,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818552437] [2023-08-27 02:57:20,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:20,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:20,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:20,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:20,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:20,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:57:20,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 314 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) [2023-08-27 02:57:20,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:20,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:57:20,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:20,249 INFO L124 PetriNetUnfolderBase]: 496/883 cut-off events. [2023-08-27 02:57:20,250 INFO L125 PetriNetUnfolderBase]: For 1257/1257 co-relation queries the response was YES. [2023-08-27 02:57:20,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3436 conditions, 883 events. 496/883 cut-off events. For 1257/1257 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4624 event pairs, 216 based on Foata normal form. 36/843 useless extension candidates. Maximal degree in co-relation 3417. Up to 498 conditions per place. [2023-08-27 02:57:20,255 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-27 02:57:20,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 68 transitions, 619 flow [2023-08-27 02:57:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-27 02:57:20,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-08-27 02:57:20,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-27 02:57:20,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-27 02:57:20,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:20,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-27 02:57:20,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,259 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 314 flow. Second operand 3 states and 243 transitions. [2023-08-27 02:57:20,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 68 transitions, 619 flow [2023-08-27 02:57:20,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 68 transitions, 619 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:57:20,263 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 358 flow [2023-08-27 02:57:20,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2023-08-27 02:57:20,264 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-08-27 02:57:20,264 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 358 flow [2023-08-27 02:57:20,264 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) [2023-08-27 02:57:20,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:20,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:57:20,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:57:20,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:20,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:20,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1919051955, now seen corresponding path program 1 times [2023-08-27 02:57:20,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:20,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861137738] [2023-08-27 02:57:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:20,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:20,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:20,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861137738] [2023-08-27 02:57:20,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861137738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:20,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:20,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:20,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626437545] [2023-08-27 02:57:20,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:20,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:20,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:20,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:20,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:20,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:20,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:20,385 INFO L124 PetriNetUnfolderBase]: 452/823 cut-off events. [2023-08-27 02:57:20,385 INFO L125 PetriNetUnfolderBase]: For 1806/1806 co-relation queries the response was YES. [2023-08-27 02:57:20,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 823 events. 452/823 cut-off events. For 1806/1806 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4433 event pairs, 220 based on Foata normal form. 16/779 useless extension candidates. Maximal degree in co-relation 3464. Up to 700 conditions per place. [2023-08-27 02:57:20,391 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 51 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-08-27 02:57:20,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 543 flow [2023-08-27 02:57:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-27 02:57:20,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44834307992202727 [2023-08-27 02:57:20,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-27 02:57:20,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-27 02:57:20,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:20,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-27 02:57:20,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,395 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,395 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 358 flow. Second operand 3 states and 230 transitions. [2023-08-27 02:57:20,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 543 flow [2023-08-27 02:57:20,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:20,399 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 325 flow [2023-08-27 02:57:20,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=325, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-08-27 02:57:20,400 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-08-27 02:57:20,400 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 325 flow [2023-08-27 02:57:20,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:20,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:20,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 02:57:20,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:20,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:20,401 INFO L85 PathProgramCache]: Analyzing trace with hash -638931166, now seen corresponding path program 1 times [2023-08-27 02:57:20,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:20,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470017107] [2023-08-27 02:57:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:20,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:20,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:20,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470017107] [2023-08-27 02:57:20,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470017107] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:20,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599922781] [2023-08-27 02:57:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:20,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:20,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:20,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:20,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 02:57:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:20,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:57:20,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:20,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:20,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:57:20,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599922781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:20,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:57:20,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:57:20,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208294353] [2023-08-27 02:57:20,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:20,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:20,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:20,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:20,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:20,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:20,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:20,623 INFO L124 PetriNetUnfolderBase]: 378/689 cut-off events. [2023-08-27 02:57:20,623 INFO L125 PetriNetUnfolderBase]: For 1453/1453 co-relation queries the response was YES. [2023-08-27 02:57:20,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2903 conditions, 689 events. 378/689 cut-off events. For 1453/1453 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3524 event pairs, 92 based on Foata normal form. 0/689 useless extension candidates. Maximal degree in co-relation 2880. Up to 385 conditions per place. [2023-08-27 02:57:20,628 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 53 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-08-27 02:57:20,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 550 flow [2023-08-27 02:57:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:57:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:57:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2023-08-27 02:57:20,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2023-08-27 02:57:20,630 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 303 transitions. [2023-08-27 02:57:20,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 303 transitions. [2023-08-27 02:57:20,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:20,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 303 transitions. [2023-08-27 02:57:20,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,632 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,632 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 325 flow. Second operand 4 states and 303 transitions. [2023-08-27 02:57:20,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 550 flow [2023-08-27 02:57:20,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:20,636 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 278 flow [2023-08-27 02:57:20,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-27 02:57:20,639 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2023-08-27 02:57:20,640 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 278 flow [2023-08-27 02:57:20,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:20,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:20,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:20,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-27 02:57:20,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:20,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:20,846 INFO L85 PathProgramCache]: Analyzing trace with hash -638931208, now seen corresponding path program 1 times [2023-08-27 02:57:20,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:20,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145907686] [2023-08-27 02:57:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:20,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:57:20,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:20,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145907686] [2023-08-27 02:57:20,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145907686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:20,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:20,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:57:20,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712595297] [2023-08-27 02:57:20,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:20,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:57:20,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:20,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:57:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:57:20,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:57:20,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:20,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:57:20,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:20,960 INFO L124 PetriNetUnfolderBase]: 358/667 cut-off events. [2023-08-27 02:57:20,960 INFO L125 PetriNetUnfolderBase]: For 1658/1658 co-relation queries the response was YES. [2023-08-27 02:57:20,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2851 conditions, 667 events. 358/667 cut-off events. For 1658/1658 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3391 event pairs, 179 based on Foata normal form. 30/697 useless extension candidates. Maximal degree in co-relation 2828. Up to 422 conditions per place. [2023-08-27 02:57:20,965 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 44 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-08-27 02:57:20,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 493 flow [2023-08-27 02:57:20,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-27 02:57:20,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2023-08-27 02:57:20,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-27 02:57:20,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-27 02:57:20,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:20,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-27 02:57:20,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,969 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 278 flow. Second operand 3 states and 240 transitions. [2023-08-27 02:57:20,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 493 flow [2023-08-27 02:57:20,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 473 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 02:57:20,974 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 290 flow [2023-08-27 02:57:20,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-27 02:57:20,975 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2023-08-27 02:57:20,976 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 290 flow [2023-08-27 02:57:20,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:20,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:20,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:20,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:57:20,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:20,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:20,977 INFO L85 PathProgramCache]: Analyzing trace with hash 928422854, now seen corresponding path program 1 times [2023-08-27 02:57:20,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:20,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147446029] [2023-08-27 02:57:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:20,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:21,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:21,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147446029] [2023-08-27 02:57:21,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147446029] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:21,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:21,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:21,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938782552] [2023-08-27 02:57:21,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:21,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:21,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:21,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:21,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:21,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:21,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:21,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:21,133 INFO L124 PetriNetUnfolderBase]: 436/785 cut-off events. [2023-08-27 02:57:21,133 INFO L125 PetriNetUnfolderBase]: For 2135/2135 co-relation queries the response was YES. [2023-08-27 02:57:21,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 785 events. 436/785 cut-off events. For 2135/2135 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3974 event pairs, 95 based on Foata normal form. 40/825 useless extension candidates. Maximal degree in co-relation 3301. Up to 297 conditions per place. [2023-08-27 02:57:21,140 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 50 selfloop transitions, 19 changer transitions 0/69 dead transitions. [2023-08-27 02:57:21,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 677 flow [2023-08-27 02:57:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:57:21,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:57:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2023-08-27 02:57:21,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-27 02:57:21,142 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 380 transitions. [2023-08-27 02:57:21,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 380 transitions. [2023-08-27 02:57:21,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:21,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 380 transitions. [2023-08-27 02:57:21,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,145 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 290 flow. Second operand 5 states and 380 transitions. [2023-08-27 02:57:21,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 677 flow [2023-08-27 02:57:21,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 69 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:21,150 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 466 flow [2023-08-27 02:57:21,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=466, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-27 02:57:21,152 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2023-08-27 02:57:21,152 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 466 flow [2023-08-27 02:57:21,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:21,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:21,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:57:21,152 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:21,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:21,153 INFO L85 PathProgramCache]: Analyzing trace with hash 930812023, now seen corresponding path program 1 times [2023-08-27 02:57:21,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:21,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191178203] [2023-08-27 02:57:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:21,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:21,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:21,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191178203] [2023-08-27 02:57:21,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191178203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:21,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:21,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:21,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637205086] [2023-08-27 02:57:21,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:21,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:21,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:21,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:21,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:21,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:21,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:21,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:21,361 INFO L124 PetriNetUnfolderBase]: 446/823 cut-off events. [2023-08-27 02:57:21,361 INFO L125 PetriNetUnfolderBase]: For 3657/3657 co-relation queries the response was YES. [2023-08-27 02:57:21,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 823 events. 446/823 cut-off events. For 3657/3657 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4389 event pairs, 185 based on Foata normal form. 80/903 useless extension candidates. Maximal degree in co-relation 3796. Up to 348 conditions per place. [2023-08-27 02:57:21,368 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 60 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2023-08-27 02:57:21,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 773 flow [2023-08-27 02:57:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:57:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:57:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-27 02:57:21,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44678362573099417 [2023-08-27 02:57:21,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-27 02:57:21,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-27 02:57:21,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:21,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-27 02:57:21,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,373 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,373 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 466 flow. Second operand 5 states and 382 transitions. [2023-08-27 02:57:21,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 773 flow [2023-08-27 02:57:21,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 730 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 02:57:21,379 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 502 flow [2023-08-27 02:57:21,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-27 02:57:21,380 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2023-08-27 02:57:21,380 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 502 flow [2023-08-27 02:57:21,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:21,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:21,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:57:21,381 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:21,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash 928477451, now seen corresponding path program 1 times [2023-08-27 02:57:21,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:21,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207648127] [2023-08-27 02:57:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:21,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:21,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:21,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207648127] [2023-08-27 02:57:21,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207648127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:21,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:21,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:57:21,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143082035] [2023-08-27 02:57:21,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:21,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:57:21,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:21,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:57:21,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:21,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:21,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 502 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:21,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:21,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:21,648 INFO L124 PetriNetUnfolderBase]: 436/815 cut-off events. [2023-08-27 02:57:21,648 INFO L125 PetriNetUnfolderBase]: For 3671/3671 co-relation queries the response was YES. [2023-08-27 02:57:21,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3918 conditions, 815 events. 436/815 cut-off events. For 3671/3671 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4400 event pairs, 111 based on Foata normal form. 5/820 useless extension candidates. Maximal degree in co-relation 3887. Up to 527 conditions per place. [2023-08-27 02:57:21,655 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 56 selfloop transitions, 27 changer transitions 0/83 dead transitions. [2023-08-27 02:57:21,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 966 flow [2023-08-27 02:57:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:57:21,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:57:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 565 transitions. [2023-08-27 02:57:21,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130116959064328 [2023-08-27 02:57:21,657 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 565 transitions. [2023-08-27 02:57:21,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 565 transitions. [2023-08-27 02:57:21,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:21,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 565 transitions. [2023-08-27 02:57:21,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.625) internal successors, (565), 8 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,663 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,663 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 502 flow. Second operand 8 states and 565 transitions. [2023-08-27 02:57:21,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 966 flow [2023-08-27 02:57:21,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 966 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:57:21,672 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 641 flow [2023-08-27 02:57:21,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=641, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-27 02:57:21,673 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2023-08-27 02:57:21,673 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 641 flow [2023-08-27 02:57:21,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:21,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:21,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:57:21,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:21,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:21,675 INFO L85 PathProgramCache]: Analyzing trace with hash 928422548, now seen corresponding path program 1 times [2023-08-27 02:57:21,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:21,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310604185] [2023-08-27 02:57:21,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:21,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:21,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:21,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310604185] [2023-08-27 02:57:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310604185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:21,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:21,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907502405] [2023-08-27 02:57:21,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:21,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:21,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:21,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:21,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:21,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:21,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:21,807 INFO L124 PetriNetUnfolderBase]: 335/597 cut-off events. [2023-08-27 02:57:21,807 INFO L125 PetriNetUnfolderBase]: For 3326/3326 co-relation queries the response was YES. [2023-08-27 02:57:21,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 597 events. 335/597 cut-off events. For 3326/3326 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2728 event pairs, 165 based on Foata normal form. 50/647 useless extension candidates. Maximal degree in co-relation 3010. Up to 597 conditions per place. [2023-08-27 02:57:21,816 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-27 02:57:21,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 39 transitions, 503 flow [2023-08-27 02:57:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-08-27 02:57:21,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249512670565302 [2023-08-27 02:57:21,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-08-27 02:57:21,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-08-27 02:57:21,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:21,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-08-27 02:57:21,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,820 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 641 flow. Second operand 3 states and 218 transitions. [2023-08-27 02:57:21,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 39 transitions, 503 flow [2023-08-27 02:57:21,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 39 transitions, 468 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-27 02:57:21,827 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 392 flow [2023-08-27 02:57:21,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-08-27 02:57:21,827 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2023-08-27 02:57:21,827 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 392 flow [2023-08-27 02:57:21,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:21,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:21,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:57:21,828 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:21,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:21,829 INFO L85 PathProgramCache]: Analyzing trace with hash 928422549, now seen corresponding path program 1 times [2023-08-27 02:57:21,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:21,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873718371] [2023-08-27 02:57:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:21,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:21,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:21,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873718371] [2023-08-27 02:57:21,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873718371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:21,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:21,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:21,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566381788] [2023-08-27 02:57:21,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:21,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:21,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:21,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:21,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:21,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:21,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:21,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:21,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:21,957 INFO L124 PetriNetUnfolderBase]: 369/651 cut-off events. [2023-08-27 02:57:21,957 INFO L125 PetriNetUnfolderBase]: For 2697/2697 co-relation queries the response was YES. [2023-08-27 02:57:21,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3124 conditions, 651 events. 369/651 cut-off events. For 2697/2697 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2953 event pairs, 122 based on Foata normal form. 24/675 useless extension candidates. Maximal degree in co-relation 3096. Up to 482 conditions per place. [2023-08-27 02:57:21,962 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 52 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2023-08-27 02:57:21,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 650 flow [2023-08-27 02:57:21,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:57:21,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:57:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2023-08-27 02:57:21,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43742690058479533 [2023-08-27 02:57:21,963 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2023-08-27 02:57:21,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2023-08-27 02:57:21,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:21,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2023-08-27 02:57:21,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,966 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,966 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 392 flow. Second operand 5 states and 374 transitions. [2023-08-27 02:57:21,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 650 flow [2023-08-27 02:57:21,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 641 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 02:57:21,972 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 431 flow [2023-08-27 02:57:21,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-27 02:57:21,972 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-08-27 02:57:21,972 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 431 flow [2023-08-27 02:57:21,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:21,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:21,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:21,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 02:57:21,973 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:21,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:21,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1667943794, now seen corresponding path program 1 times [2023-08-27 02:57:21,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:21,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755315699] [2023-08-27 02:57:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:21,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:22,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:22,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755315699] [2023-08-27 02:57:22,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755315699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:22,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:22,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:57:22,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548796639] [2023-08-27 02:57:22,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:22,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:57:22,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:22,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:57:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:22,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:22,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:22,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:22,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:22,249 INFO L124 PetriNetUnfolderBase]: 401/707 cut-off events. [2023-08-27 02:57:22,249 INFO L125 PetriNetUnfolderBase]: For 3148/3148 co-relation queries the response was YES. [2023-08-27 02:57:22,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3511 conditions, 707 events. 401/707 cut-off events. For 3148/3148 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3304 event pairs, 94 based on Foata normal form. 12/719 useless extension candidates. Maximal degree in co-relation 3480. Up to 451 conditions per place. [2023-08-27 02:57:22,259 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 55 selfloop transitions, 22 changer transitions 0/77 dead transitions. [2023-08-27 02:57:22,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 77 transitions, 876 flow [2023-08-27 02:57:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:57:22,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:57:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2023-08-27 02:57:22,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171539961013645 [2023-08-27 02:57:22,261 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2023-08-27 02:57:22,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2023-08-27 02:57:22,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:22,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2023-08-27 02:57:22,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,265 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,265 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 431 flow. Second operand 6 states and 428 transitions. [2023-08-27 02:57:22,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 77 transitions, 876 flow [2023-08-27 02:57:22,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 856 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:22,272 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 654 flow [2023-08-27 02:57:22,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2023-08-27 02:57:22,272 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 40 predicate places. [2023-08-27 02:57:22,272 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 654 flow [2023-08-27 02:57:22,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:22,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:22,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 02:57:22,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:22,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:22,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1667969834, now seen corresponding path program 2 times [2023-08-27 02:57:22,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:22,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589011111] [2023-08-27 02:57:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:22,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:22,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589011111] [2023-08-27 02:57:22,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589011111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:22,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:22,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:57:22,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975676163] [2023-08-27 02:57:22,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:22,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:57:22,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:22,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:57:22,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:22,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:22,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 654 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:22,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:22,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:22,492 INFO L124 PetriNetUnfolderBase]: 371/649 cut-off events. [2023-08-27 02:57:22,492 INFO L125 PetriNetUnfolderBase]: For 4300/4300 co-relation queries the response was YES. [2023-08-27 02:57:22,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3606 conditions, 649 events. 371/649 cut-off events. For 4300/4300 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2892 event pairs, 126 based on Foata normal form. 22/671 useless extension candidates. Maximal degree in co-relation 3570. Up to 486 conditions per place. [2023-08-27 02:57:22,498 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 52 selfloop transitions, 20 changer transitions 4/76 dead transitions. [2023-08-27 02:57:22,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 76 transitions, 978 flow [2023-08-27 02:57:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:57:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:57:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 496 transitions. [2023-08-27 02:57:22,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143692564745196 [2023-08-27 02:57:22,500 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 496 transitions. [2023-08-27 02:57:22,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 496 transitions. [2023-08-27 02:57:22,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:22,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 496 transitions. [2023-08-27 02:57:22,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,504 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,504 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 654 flow. Second operand 7 states and 496 transitions. [2023-08-27 02:57:22,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 76 transitions, 978 flow [2023-08-27 02:57:22,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 958 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-27 02:57:22,516 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 781 flow [2023-08-27 02:57:22,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=781, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2023-08-27 02:57:22,518 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 50 predicate places. [2023-08-27 02:57:22,518 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 781 flow [2023-08-27 02:57:22,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:22,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:22,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 02:57:22,519 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:22,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:22,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1283660960, now seen corresponding path program 1 times [2023-08-27 02:57:22,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:22,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610468064] [2023-08-27 02:57:22,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:22,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:22,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:22,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610468064] [2023-08-27 02:57:22,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610468064] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336773619] [2023-08-27 02:57:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:22,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:22,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:22,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:22,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 02:57:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:22,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:57:22,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:22,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:22,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336773619] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:22,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:22,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 02:57:22,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363203778] [2023-08-27 02:57:22,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:22,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 02:57:22,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:22,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 02:57:22,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:57:22,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:22,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 781 flow. Second operand has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:22,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:22,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:22,848 INFO L124 PetriNetUnfolderBase]: 527/887 cut-off events. [2023-08-27 02:57:22,848 INFO L125 PetriNetUnfolderBase]: For 7876/7876 co-relation queries the response was YES. [2023-08-27 02:57:22,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5073 conditions, 887 events. 527/887 cut-off events. For 7876/7876 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3813 event pairs, 53 based on Foata normal form. 94/981 useless extension candidates. Maximal degree in co-relation 5031. Up to 283 conditions per place. [2023-08-27 02:57:22,855 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 72 selfloop transitions, 35 changer transitions 1/108 dead transitions. [2023-08-27 02:57:22,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 108 transitions, 1487 flow [2023-08-27 02:57:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:57:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:57:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 669 transitions. [2023-08-27 02:57:22,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346978557504873 [2023-08-27 02:57:22,857 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 669 transitions. [2023-08-27 02:57:22,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 669 transitions. [2023-08-27 02:57:22,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:22,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 669 transitions. [2023-08-27 02:57:22,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.33333333333333) internal successors, (669), 9 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,861 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,861 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 781 flow. Second operand 9 states and 669 transitions. [2023-08-27 02:57:22,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 108 transitions, 1487 flow [2023-08-27 02:57:22,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 108 transitions, 1435 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-27 02:57:22,877 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 1093 flow [2023-08-27 02:57:22,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1093, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2023-08-27 02:57:22,877 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2023-08-27 02:57:22,877 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 1093 flow [2023-08-27 02:57:22,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:22,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:22,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:22,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:23,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:23,083 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:23,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:23,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1157182881, now seen corresponding path program 1 times [2023-08-27 02:57:23,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:23,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618648412] [2023-08-27 02:57:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:23,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:23,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:23,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618648412] [2023-08-27 02:57:23,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618648412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:23,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:23,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:57:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961801892] [2023-08-27 02:57:23,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:23,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:57:23,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:23,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:57:23,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:57:23,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:23,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 1093 flow. Second operand has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:23,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:23,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:23,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:23,363 INFO L124 PetriNetUnfolderBase]: 567/959 cut-off events. [2023-08-27 02:57:23,364 INFO L125 PetriNetUnfolderBase]: For 10920/10920 co-relation queries the response was YES. [2023-08-27 02:57:23,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6318 conditions, 959 events. 567/959 cut-off events. For 10920/10920 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4285 event pairs, 154 based on Foata normal form. 8/967 useless extension candidates. Maximal degree in co-relation 6269. Up to 654 conditions per place. [2023-08-27 02:57:23,371 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 79 selfloop transitions, 29 changer transitions 1/109 dead transitions. [2023-08-27 02:57:23,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 109 transitions, 1666 flow [2023-08-27 02:57:23,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:57:23,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:57:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 563 transitions. [2023-08-27 02:57:23,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41154970760233917 [2023-08-27 02:57:23,373 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 563 transitions. [2023-08-27 02:57:23,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 563 transitions. [2023-08-27 02:57:23,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:23,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 563 transitions. [2023-08-27 02:57:23,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:23,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:23,376 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:23,376 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 1093 flow. Second operand 8 states and 563 transitions. [2023-08-27 02:57:23,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 109 transitions, 1666 flow [2023-08-27 02:57:23,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 109 transitions, 1619 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-27 02:57:23,403 INFO L231 Difference]: Finished difference. Result has 96 places, 85 transitions, 1315 flow [2023-08-27 02:57:23,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1315, PETRI_PLACES=96, PETRI_TRANSITIONS=85} [2023-08-27 02:57:23,404 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 70 predicate places. [2023-08-27 02:57:23,404 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 85 transitions, 1315 flow [2023-08-27 02:57:23,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:23,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:23,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:23,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 02:57:23,404 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:23,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1157208921, now seen corresponding path program 2 times [2023-08-27 02:57:23,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:23,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885540782] [2023-08-27 02:57:23,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:23,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:23,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:23,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885540782] [2023-08-27 02:57:23,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885540782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:23,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:23,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:57:23,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608501963] [2023-08-27 02:57:23,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:23,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:57:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:57:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:57:23,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:23,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 85 transitions, 1315 flow. Second operand has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:23,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:23,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:23,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:23,769 INFO L124 PetriNetUnfolderBase]: 543/919 cut-off events. [2023-08-27 02:57:23,770 INFO L125 PetriNetUnfolderBase]: For 12161/12161 co-relation queries the response was YES. [2023-08-27 02:57:23,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 919 events. 543/919 cut-off events. For 12161/12161 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4015 event pairs, 138 based on Foata normal form. 8/927 useless extension candidates. Maximal degree in co-relation 6260. Up to 574 conditions per place. [2023-08-27 02:57:23,778 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 67 selfloop transitions, 33 changer transitions 8/108 dead transitions. [2023-08-27 02:57:23,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 108 transitions, 1726 flow [2023-08-27 02:57:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:57:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:57:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 561 transitions. [2023-08-27 02:57:23,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4100877192982456 [2023-08-27 02:57:23,780 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 561 transitions. [2023-08-27 02:57:23,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 561 transitions. [2023-08-27 02:57:23,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:23,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 561 transitions. [2023-08-27 02:57:23,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:23,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:23,784 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:23,784 INFO L175 Difference]: Start difference. First operand has 96 places, 85 transitions, 1315 flow. Second operand 8 states and 561 transitions. [2023-08-27 02:57:23,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 108 transitions, 1726 flow [2023-08-27 02:57:23,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 108 transitions, 1673 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-08-27 02:57:23,817 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 1396 flow [2023-08-27 02:57:23,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1396, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2023-08-27 02:57:23,817 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 77 predicate places. [2023-08-27 02:57:23,817 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 1396 flow [2023-08-27 02:57:23,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:23,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:23,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:23,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 02:57:23,818 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:23,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:23,819 INFO L85 PathProgramCache]: Analyzing trace with hash -977605308, now seen corresponding path program 3 times [2023-08-27 02:57:23,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:23,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227754381] [2023-08-27 02:57:23,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:23,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:23,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:23,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227754381] [2023-08-27 02:57:23,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227754381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:23,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030057136] [2023-08-27 02:57:23,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:57:23,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:23,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:23,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:23,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 02:57:24,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 02:57:24,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:24,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 02:57:24,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:24,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:24,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030057136] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:24,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:24,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 02:57:24,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888804724] [2023-08-27 02:57:24,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:24,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 02:57:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 02:57:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-27 02:57:24,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:24,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 1396 flow. Second operand has 12 states, 12 states have (on average 65.91666666666667) internal successors, (791), 12 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:24,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:24,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:24,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:24,531 INFO L124 PetriNetUnfolderBase]: 659/1127 cut-off events. [2023-08-27 02:57:24,532 INFO L125 PetriNetUnfolderBase]: For 18072/18072 co-relation queries the response was YES. [2023-08-27 02:57:24,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7762 conditions, 1127 events. 659/1127 cut-off events. For 18072/18072 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5272 event pairs, 157 based on Foata normal form. 60/1187 useless extension candidates. Maximal degree in co-relation 7705. Up to 605 conditions per place. [2023-08-27 02:57:24,543 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 88 selfloop transitions, 52 changer transitions 16/156 dead transitions. [2023-08-27 02:57:24,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 156 transitions, 2439 flow [2023-08-27 02:57:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 02:57:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 02:57:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 919 transitions. [2023-08-27 02:57:24,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41340530814215026 [2023-08-27 02:57:24,546 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 919 transitions. [2023-08-27 02:57:24,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 919 transitions. [2023-08-27 02:57:24,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:24,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 919 transitions. [2023-08-27 02:57:24,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.6923076923077) internal successors, (919), 13 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:24,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:24,552 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:24,552 INFO L175 Difference]: Start difference. First operand has 103 places, 87 transitions, 1396 flow. Second operand 13 states and 919 transitions. [2023-08-27 02:57:24,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 156 transitions, 2439 flow [2023-08-27 02:57:24,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 156 transitions, 2356 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-27 02:57:24,590 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 1836 flow [2023-08-27 02:57:24,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1836, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2023-08-27 02:57:24,591 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 89 predicate places. [2023-08-27 02:57:24,591 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 1836 flow [2023-08-27 02:57:24,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 65.91666666666667) internal successors, (791), 12 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:24,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:24,591 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:24,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:24,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:24,797 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:24,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:24,798 INFO L85 PathProgramCache]: Analyzing trace with hash -952580868, now seen corresponding path program 4 times [2023-08-27 02:57:24,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:24,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730573325] [2023-08-27 02:57:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:24,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:24,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:24,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730573325] [2023-08-27 02:57:24,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730573325] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:24,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171855494] [2023-08-27 02:57:24,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:57:24,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:24,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:24,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:24,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 02:57:24,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:57:24,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:24,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 02:57:24,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:24,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:25,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171855494] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:25,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:25,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 02:57:25,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860161689] [2023-08-27 02:57:25,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:25,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 02:57:25,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:25,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 02:57:25,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-27 02:57:25,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:25,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 1836 flow. Second operand has 13 states, 13 states have (on average 65.92307692307692) internal successors, (857), 13 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:25,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:25,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:25,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:25,615 INFO L124 PetriNetUnfolderBase]: 843/1451 cut-off events. [2023-08-27 02:57:25,615 INFO L125 PetriNetUnfolderBase]: For 31294/31294 co-relation queries the response was YES. [2023-08-27 02:57:25,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10673 conditions, 1451 events. 843/1451 cut-off events. For 31294/31294 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7373 event pairs, 162 based on Foata normal form. 74/1525 useless extension candidates. Maximal degree in co-relation 10611. Up to 529 conditions per place. [2023-08-27 02:57:25,628 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 109 selfloop transitions, 85 changer transitions 22/216 dead transitions. [2023-08-27 02:57:25,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 216 transitions, 3681 flow [2023-08-27 02:57:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 02:57:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 02:57:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1266 transitions. [2023-08-27 02:57:25,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41130604288499023 [2023-08-27 02:57:25,631 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1266 transitions. [2023-08-27 02:57:25,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1266 transitions. [2023-08-27 02:57:25,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:25,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1266 transitions. [2023-08-27 02:57:25,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 70.33333333333333) internal successors, (1266), 18 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:25,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:25,638 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:25,638 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 1836 flow. Second operand 18 states and 1266 transitions. [2023-08-27 02:57:25,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 216 transitions, 3681 flow [2023-08-27 02:57:25,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 216 transitions, 3547 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-08-27 02:57:25,701 INFO L231 Difference]: Finished difference. Result has 138 places, 149 transitions, 2805 flow [2023-08-27 02:57:25,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2805, PETRI_PLACES=138, PETRI_TRANSITIONS=149} [2023-08-27 02:57:25,702 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 112 predicate places. [2023-08-27 02:57:25,702 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 149 transitions, 2805 flow [2023-08-27 02:57:25,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 65.92307692307692) internal successors, (857), 13 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:25,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:25,703 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:25,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:25,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:25,908 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:25,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:25,909 INFO L85 PathProgramCache]: Analyzing trace with hash 820767897, now seen corresponding path program 5 times [2023-08-27 02:57:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:25,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126046085] [2023-08-27 02:57:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:25,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:26,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:26,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126046085] [2023-08-27 02:57:26,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126046085] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:26,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232763434] [2023-08-27 02:57:26,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 02:57:26,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:26,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:26,004 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:26,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 02:57:26,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:57:26,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:26,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 02:57:26,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:26,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:26,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232763434] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:26,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:26,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 02:57:26,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861874610] [2023-08-27 02:57:26,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:26,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:57:26,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:26,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:57:26,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:57:26,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:26,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 149 transitions, 2805 flow. Second operand has 14 states, 14 states have (on average 65.78571428571429) internal successors, (921), 14 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:26,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:26,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:26,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:26,697 INFO L124 PetriNetUnfolderBase]: 1077/1873 cut-off events. [2023-08-27 02:57:26,698 INFO L125 PetriNetUnfolderBase]: For 51651/51651 co-relation queries the response was YES. [2023-08-27 02:57:26,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15335 conditions, 1873 events. 1077/1873 cut-off events. For 51651/51651 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10289 event pairs, 148 based on Foata normal form. 70/1943 useless extension candidates. Maximal degree in co-relation 15263. Up to 717 conditions per place. [2023-08-27 02:57:26,718 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 130 selfloop transitions, 117 changer transitions 19/266 dead transitions. [2023-08-27 02:57:26,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 266 transitions, 5137 flow [2023-08-27 02:57:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 02:57:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 02:57:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1332 transitions. [2023-08-27 02:57:26,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099722991689751 [2023-08-27 02:57:26,721 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1332 transitions. [2023-08-27 02:57:26,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1332 transitions. [2023-08-27 02:57:26,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:26,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1332 transitions. [2023-08-27 02:57:26,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 70.10526315789474) internal successors, (1332), 19 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:26,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:26,727 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:26,727 INFO L175 Difference]: Start difference. First operand has 138 places, 149 transitions, 2805 flow. Second operand 19 states and 1332 transitions. [2023-08-27 02:57:26,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 266 transitions, 5137 flow [2023-08-27 02:57:26,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 266 transitions, 4889 flow, removed 108 selfloop flow, removed 6 redundant places. [2023-08-27 02:57:26,868 INFO L231 Difference]: Finished difference. Result has 160 places, 194 transitions, 3945 flow [2023-08-27 02:57:26,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3945, PETRI_PLACES=160, PETRI_TRANSITIONS=194} [2023-08-27 02:57:26,868 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 134 predicate places. [2023-08-27 02:57:26,868 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 194 transitions, 3945 flow [2023-08-27 02:57:26,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 65.78571428571429) internal successors, (921), 14 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:26,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:26,869 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:26,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:27,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:27,070 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:27,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash -317608657, now seen corresponding path program 6 times [2023-08-27 02:57:27,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:27,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816118191] [2023-08-27 02:57:27,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:27,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:27,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:27,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816118191] [2023-08-27 02:57:27,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816118191] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:27,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147921298] [2023-08-27 02:57:27,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 02:57:27,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:27,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:27,270 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:27,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 02:57:27,354 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 02:57:27,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:27,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 02:57:27,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:27,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:27,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147921298] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:27,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:27,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-27 02:57:27,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314778394] [2023-08-27 02:57:27,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:27,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 02:57:27,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 02:57:27,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 02:57:27,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:27,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 194 transitions, 3945 flow. Second operand has 15 states, 15 states have (on average 65.73333333333333) internal successors, (986), 15 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:27,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:27,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:27,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:28,283 INFO L124 PetriNetUnfolderBase]: 1367/2371 cut-off events. [2023-08-27 02:57:28,283 INFO L125 PetriNetUnfolderBase]: For 88399/88399 co-relation queries the response was YES. [2023-08-27 02:57:28,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20712 conditions, 2371 events. 1367/2371 cut-off events. For 88399/88399 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13040 event pairs, 170 based on Foata normal form. 138/2509 useless extension candidates. Maximal degree in co-relation 20632. Up to 925 conditions per place. [2023-08-27 02:57:28,309 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 134 selfloop transitions, 151 changer transitions 29/314 dead transitions. [2023-08-27 02:57:28,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 314 transitions, 6498 flow [2023-08-27 02:57:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 02:57:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 02:57:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1475 transitions. [2023-08-27 02:57:28,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41074909495962125 [2023-08-27 02:57:28,312 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1475 transitions. [2023-08-27 02:57:28,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1475 transitions. [2023-08-27 02:57:28,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:28,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1475 transitions. [2023-08-27 02:57:28,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 70.23809523809524) internal successors, (1475), 21 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:28,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 171.0) internal successors, (3762), 22 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:28,318 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 171.0) internal successors, (3762), 22 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:28,318 INFO L175 Difference]: Start difference. First operand has 160 places, 194 transitions, 3945 flow. Second operand 21 states and 1475 transitions. [2023-08-27 02:57:28,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 314 transitions, 6498 flow [2023-08-27 02:57:28,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 314 transitions, 6166 flow, removed 120 selfloop flow, removed 10 redundant places. [2023-08-27 02:57:28,499 INFO L231 Difference]: Finished difference. Result has 181 places, 233 transitions, 5040 flow [2023-08-27 02:57:28,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=3679, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5040, PETRI_PLACES=181, PETRI_TRANSITIONS=233} [2023-08-27 02:57:28,500 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 155 predicate places. [2023-08-27 02:57:28,500 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 233 transitions, 5040 flow [2023-08-27 02:57:28,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 65.73333333333333) internal successors, (986), 15 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:28,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:28,500 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:28,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:28,706 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:28,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1349587639, now seen corresponding path program 1 times [2023-08-27 02:57:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590092948] [2023-08-27 02:57:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:28,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:28,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590092948] [2023-08-27 02:57:28,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590092948] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:28,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268656020] [2023-08-27 02:57:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:28,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:28,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:28,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:28,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 02:57:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:28,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 02:57:28,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:28,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268656020] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:28,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:28,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-27 02:57:28,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151663858] [2023-08-27 02:57:28,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:28,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 02:57:28,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:28,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 02:57:28,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-08-27 02:57:28,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:29,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 233 transitions, 5040 flow. Second operand has 20 states, 20 states have (on average 68.5) internal successors, (1370), 20 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:29,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:29,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:29,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:29,909 INFO L124 PetriNetUnfolderBase]: 1709/2906 cut-off events. [2023-08-27 02:57:29,909 INFO L125 PetriNetUnfolderBase]: For 140945/140945 co-relation queries the response was YES. [2023-08-27 02:57:29,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26413 conditions, 2906 events. 1709/2906 cut-off events. For 140945/140945 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14843 event pairs, 157 based on Foata normal form. 232/3138 useless extension candidates. Maximal degree in co-relation 26324. Up to 1133 conditions per place. [2023-08-27 02:57:29,937 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 180 selfloop transitions, 186 changer transitions 18/384 dead transitions. [2023-08-27 02:57:29,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 384 transitions, 8945 flow [2023-08-27 02:57:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 02:57:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 02:57:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1776 transitions. [2023-08-27 02:57:29,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2023-08-27 02:57:29,941 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1776 transitions. [2023-08-27 02:57:29,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1776 transitions. [2023-08-27 02:57:29,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:29,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1776 transitions. [2023-08-27 02:57:29,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 74.0) internal successors, (1776), 24 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:29,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 171.0) internal successors, (4275), 25 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:29,951 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 171.0) internal successors, (4275), 25 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:29,951 INFO L175 Difference]: Start difference. First operand has 181 places, 233 transitions, 5040 flow. Second operand 24 states and 1776 transitions. [2023-08-27 02:57:29,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 384 transitions, 8945 flow [2023-08-27 02:57:30,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 384 transitions, 8375 flow, removed 231 selfloop flow, removed 14 redundant places. [2023-08-27 02:57:30,251 INFO L231 Difference]: Finished difference. Result has 204 places, 281 transitions, 6579 flow [2023-08-27 02:57:30,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=4695, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=6579, PETRI_PLACES=204, PETRI_TRANSITIONS=281} [2023-08-27 02:57:30,252 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 178 predicate places. [2023-08-27 02:57:30,252 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 281 transitions, 6579 flow [2023-08-27 02:57:30,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 68.5) internal successors, (1370), 20 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:30,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:30,253 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:30,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:30,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-27 02:57:30,454 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:30,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:30,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1112456953, now seen corresponding path program 7 times [2023-08-27 02:57:30,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:30,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792526487] [2023-08-27 02:57:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:30,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:30,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792526487] [2023-08-27 02:57:30,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792526487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:30,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409993455] [2023-08-27 02:57:30,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 02:57:30,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:30,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:30,603 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:30,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 02:57:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:30,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 02:57:30,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:30,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:30,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409993455] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:30,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:30,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-27 02:57:30,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432703798] [2023-08-27 02:57:30,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:30,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 02:57:30,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:30,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 02:57:30,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-27 02:57:30,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:30,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 281 transitions, 6579 flow. Second operand has 22 states, 22 states have (on average 65.5) internal successors, (1441), 22 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:30,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:30,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:30,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:32,003 INFO L124 PetriNetUnfolderBase]: 1741/3026 cut-off events. [2023-08-27 02:57:32,003 INFO L125 PetriNetUnfolderBase]: For 110967/110967 co-relation queries the response was YES. [2023-08-27 02:57:32,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26275 conditions, 3026 events. 1741/3026 cut-off events. For 110967/110967 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15899 event pairs, 162 based on Foata normal form. 56/3082 useless extension candidates. Maximal degree in co-relation 26178. Up to 1221 conditions per place. [2023-08-27 02:57:32,027 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 174 selfloop transitions, 216 changer transitions 60/450 dead transitions. [2023-08-27 02:57:32,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 450 transitions, 9900 flow [2023-08-27 02:57:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-27 02:57:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-27 02:57:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2569 transitions. [2023-08-27 02:57:32,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40603761656393234 [2023-08-27 02:57:32,033 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2569 transitions. [2023-08-27 02:57:32,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2569 transitions. [2023-08-27 02:57:32,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:32,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2569 transitions. [2023-08-27 02:57:32,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 69.43243243243244) internal successors, (2569), 37 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:32,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 171.0) internal successors, (6498), 38 states have internal predecessors, (6498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:32,105 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 171.0) internal successors, (6498), 38 states have internal predecessors, (6498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:32,105 INFO L175 Difference]: Start difference. First operand has 204 places, 281 transitions, 6579 flow. Second operand 37 states and 2569 transitions. [2023-08-27 02:57:32,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 450 transitions, 9900 flow [2023-08-27 02:57:32,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 450 transitions, 9596 flow, removed 138 selfloop flow, removed 3 redundant places. [2023-08-27 02:57:32,410 INFO L231 Difference]: Finished difference. Result has 246 places, 325 transitions, 7708 flow [2023-08-27 02:57:32,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=6375, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7708, PETRI_PLACES=246, PETRI_TRANSITIONS=325} [2023-08-27 02:57:32,410 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 220 predicate places. [2023-08-27 02:57:32,411 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 325 transitions, 7708 flow [2023-08-27 02:57:32,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 65.5) internal successors, (1441), 22 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:32,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:32,411 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:32,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:32,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 02:57:32,616 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:32,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:32,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1902151844, now seen corresponding path program 2 times [2023-08-27 02:57:32,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:32,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431830823] [2023-08-27 02:57:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:32,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:32,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431830823] [2023-08-27 02:57:32,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431830823] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757123989] [2023-08-27 02:57:32,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:57:32,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:32,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:32,804 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:32,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 02:57:32,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:57:32,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:32,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 02:57:32,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:32,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:33,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757123989] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:33,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:33,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2023-08-27 02:57:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612436222] [2023-08-27 02:57:33,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:33,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 02:57:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 02:57:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2023-08-27 02:57:33,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:33,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 325 transitions, 7708 flow. Second operand has 32 states, 32 states have (on average 68.3125) internal successors, (2186), 32 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:33,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:33,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:33,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:34,660 INFO L124 PetriNetUnfolderBase]: 2633/4498 cut-off events. [2023-08-27 02:57:34,661 INFO L125 PetriNetUnfolderBase]: For 273489/273489 co-relation queries the response was YES. [2023-08-27 02:57:34,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41643 conditions, 4498 events. 2633/4498 cut-off events. For 273489/273489 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 22871 event pairs, 177 based on Foata normal form. 232/4730 useless extension candidates. Maximal degree in co-relation 41536. Up to 1801 conditions per place. [2023-08-27 02:57:34,698 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 259 selfloop transitions, 294 changer transitions 37/590 dead transitions. [2023-08-27 02:57:34,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 590 transitions, 14449 flow [2023-08-27 02:57:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 02:57:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 02:57:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2872 transitions. [2023-08-27 02:57:34,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4306492727545359 [2023-08-27 02:57:34,704 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2872 transitions. [2023-08-27 02:57:34,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2872 transitions. [2023-08-27 02:57:34,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:34,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2872 transitions. [2023-08-27 02:57:34,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 73.64102564102564) internal successors, (2872), 39 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:34,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 171.0) internal successors, (6840), 40 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:34,716 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 171.0) internal successors, (6840), 40 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:34,716 INFO L175 Difference]: Start difference. First operand has 246 places, 325 transitions, 7708 flow. Second operand 39 states and 2872 transitions. [2023-08-27 02:57:34,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 590 transitions, 14449 flow [2023-08-27 02:57:35,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 590 transitions, 14138 flow, removed 68 selfloop flow, removed 13 redundant places. [2023-08-27 02:57:35,222 INFO L231 Difference]: Finished difference. Result has 294 places, 426 transitions, 10822 flow [2023-08-27 02:57:35,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=7439, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=10822, PETRI_PLACES=294, PETRI_TRANSITIONS=426} [2023-08-27 02:57:35,223 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 268 predicate places. [2023-08-27 02:57:35,223 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 426 transitions, 10822 flow [2023-08-27 02:57:35,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 68.3125) internal successors, (2186), 32 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:35,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:35,224 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:35,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:35,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 02:57:35,429 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:35,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:35,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2098503709, now seen corresponding path program 8 times [2023-08-27 02:57:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:35,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703871012] [2023-08-27 02:57:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:35,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:35,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:35,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703871012] [2023-08-27 02:57:35,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703871012] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:35,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147840528] [2023-08-27 02:57:35,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:57:35,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:35,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:35,723 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:35,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 02:57:35,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:57:35,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:35,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 02:57:35,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:35,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:36,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147840528] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:36,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:36,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-08-27 02:57:36,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640934159] [2023-08-27 02:57:36,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:36,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 02:57:36,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 02:57:36,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2023-08-27 02:57:36,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:36,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 426 transitions, 10822 flow. Second operand has 34 states, 34 states have (on average 65.32352941176471) internal successors, (2221), 34 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:36,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:36,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:36,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:38,939 INFO L124 PetriNetUnfolderBase]: 4321/7634 cut-off events. [2023-08-27 02:57:38,939 INFO L125 PetriNetUnfolderBase]: For 402850/402850 co-relation queries the response was YES. [2023-08-27 02:57:38,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71003 conditions, 7634 events. 4321/7634 cut-off events. For 402850/402850 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 45987 event pairs, 829 based on Foata normal form. 136/7770 useless extension candidates. Maximal degree in co-relation 70874. Up to 3249 conditions per place. [2023-08-27 02:57:39,005 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 383 selfloop transitions, 430 changer transitions 70/883 dead transitions. [2023-08-27 02:57:39,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 883 transitions, 23102 flow [2023-08-27 02:57:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-27 02:57:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-27 02:57:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2715 transitions. [2023-08-27 02:57:39,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071075123706703 [2023-08-27 02:57:39,010 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2715 transitions. [2023-08-27 02:57:39,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2715 transitions. [2023-08-27 02:57:39,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:39,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2715 transitions. [2023-08-27 02:57:39,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 69.61538461538461) internal successors, (2715), 39 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:39,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 171.0) internal successors, (6840), 40 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:39,023 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 171.0) internal successors, (6840), 40 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:39,023 INFO L175 Difference]: Start difference. First operand has 294 places, 426 transitions, 10822 flow. Second operand 39 states and 2715 transitions. [2023-08-27 02:57:39,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 883 transitions, 23102 flow [2023-08-27 02:57:40,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 883 transitions, 22338 flow, removed 248 selfloop flow, removed 8 redundant places. [2023-08-27 02:57:40,440 INFO L231 Difference]: Finished difference. Result has 341 places, 696 transitions, 19142 flow [2023-08-27 02:57:40,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=10368, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=19142, PETRI_PLACES=341, PETRI_TRANSITIONS=696} [2023-08-27 02:57:40,441 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 315 predicate places. [2023-08-27 02:57:40,441 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 696 transitions, 19142 flow [2023-08-27 02:57:40,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 65.32352941176471) internal successors, (2221), 34 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:40,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:40,442 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:40,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 02:57:40,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-27 02:57:40,642 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:40,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:40,642 INFO L85 PathProgramCache]: Analyzing trace with hash 94227317, now seen corresponding path program 9 times [2023-08-27 02:57:40,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849059423] [2023-08-27 02:57:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:40,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:40,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849059423] [2023-08-27 02:57:40,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849059423] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:40,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563377562] [2023-08-27 02:57:40,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:57:40,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:40,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:40,909 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:40,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 02:57:41,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-27 02:57:41,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:41,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 02:57:41,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:41,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:41,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563377562] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:41,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:41,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-08-27 02:57:41,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408071179] [2023-08-27 02:57:41,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:41,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-27 02:57:41,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:41,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-27 02:57:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2023-08-27 02:57:41,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:41,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 696 transitions, 19142 flow. Second operand has 34 states, 34 states have (on average 65.32352941176471) internal successors, (2221), 34 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:41,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:41,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:41,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:45,767 INFO L124 PetriNetUnfolderBase]: 6045/10810 cut-off events. [2023-08-27 02:57:45,767 INFO L125 PetriNetUnfolderBase]: For 762701/762701 co-relation queries the response was YES. [2023-08-27 02:57:45,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104829 conditions, 10810 events. 6045/10810 cut-off events. For 762701/762701 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 71494 event pairs, 883 based on Foata normal form. 168/10978 useless extension candidates. Maximal degree in co-relation 104682. Up to 4701 conditions per place. [2023-08-27 02:57:45,865 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 385 selfloop transitions, 704 changer transitions 86/1175 dead transitions. [2023-08-27 02:57:45,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1175 transitions, 32789 flow [2023-08-27 02:57:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 02:57:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 02:57:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3266 transitions. [2023-08-27 02:57:45,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4063705362697524 [2023-08-27 02:57:45,869 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3266 transitions. [2023-08-27 02:57:45,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3266 transitions. [2023-08-27 02:57:45,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:45,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3266 transitions. [2023-08-27 02:57:45,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 69.48936170212765) internal successors, (3266), 47 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:45,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 171.0) internal successors, (8208), 48 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:45,881 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 171.0) internal successors, (8208), 48 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:45,881 INFO L175 Difference]: Start difference. First operand has 341 places, 696 transitions, 19142 flow. Second operand 47 states and 3266 transitions. [2023-08-27 02:57:45,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1175 transitions, 32789 flow [2023-08-27 02:57:48,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1175 transitions, 32639 flow, removed 23 selfloop flow, removed 12 redundant places. [2023-08-27 02:57:48,885 INFO L231 Difference]: Finished difference. Result has 399 places, 953 transitions, 28639 flow [2023-08-27 02:57:48,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=18992, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=28639, PETRI_PLACES=399, PETRI_TRANSITIONS=953} [2023-08-27 02:57:48,886 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 373 predicate places. [2023-08-27 02:57:48,886 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 953 transitions, 28639 flow [2023-08-27 02:57:48,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 65.32352941176471) internal successors, (2221), 34 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:48,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:48,886 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:48,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:49,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 02:57:49,091 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:49,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:49,091 INFO L85 PathProgramCache]: Analyzing trace with hash 488091313, now seen corresponding path program 10 times [2023-08-27 02:57:49,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:49,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986573777] [2023-08-27 02:57:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:49,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:49,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986573777] [2023-08-27 02:57:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986573777] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:49,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055275502] [2023-08-27 02:57:49,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:57:49,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:49,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:49,309 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:49,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 02:57:49,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:57:49,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:49,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 02:57:49,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:49,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:49,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055275502] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:49,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:49,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-27 02:57:49,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200125699] [2023-08-27 02:57:49,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:49,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-27 02:57:49,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:49,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-27 02:57:49,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2023-08-27 02:57:49,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:49,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 953 transitions, 28639 flow. Second operand has 35 states, 35 states have (on average 65.34285714285714) internal successors, (2287), 35 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:49,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:49,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:49,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:56,288 INFO L124 PetriNetUnfolderBase]: 7033/12706 cut-off events. [2023-08-27 02:57:56,288 INFO L125 PetriNetUnfolderBase]: For 1125718/1125718 co-relation queries the response was YES. [2023-08-27 02:57:56,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127160 conditions, 12706 events. 7033/12706 cut-off events. For 1125718/1125718 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 87567 event pairs, 677 based on Foata normal form. 224/12930 useless extension candidates. Maximal degree in co-relation 126988. Up to 5609 conditions per place. [2023-08-27 02:57:56,430 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 372 selfloop transitions, 868 changer transitions 106/1346 dead transitions. [2023-08-27 02:57:56,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1346 transitions, 39652 flow [2023-08-27 02:57:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-08-27 02:57:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-08-27 02:57:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4165 transitions. [2023-08-27 02:57:56,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40594541910331383 [2023-08-27 02:57:56,435 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 4165 transitions. [2023-08-27 02:57:56,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 4165 transitions. [2023-08-27 02:57:56,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:56,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 4165 transitions. [2023-08-27 02:57:56,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 69.41666666666667) internal successors, (4165), 60 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:56,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 171.0) internal successors, (10431), 61 states have internal predecessors, (10431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:56,450 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 171.0) internal successors, (10431), 61 states have internal predecessors, (10431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:56,450 INFO L175 Difference]: Start difference. First operand has 399 places, 953 transitions, 28639 flow. Second operand 60 states and 4165 transitions. [2023-08-27 02:57:56,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1346 transitions, 39652 flow [2023-08-27 02:58:01,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 1346 transitions, 38801 flow, removed 268 selfloop flow, removed 17 redundant places. [2023-08-27 02:58:01,657 INFO L231 Difference]: Finished difference. Result has 460 places, 1109 transitions, 34696 flow [2023-08-27 02:58:01,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=28016, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=726, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=34696, PETRI_PLACES=460, PETRI_TRANSITIONS=1109} [2023-08-27 02:58:01,659 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 434 predicate places. [2023-08-27 02:58:01,659 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 1109 transitions, 34696 flow [2023-08-27 02:58:01,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 65.34285714285714) internal successors, (2287), 35 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:58:01,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:58:01,660 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:58:01,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-27 02:58:01,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 02:58:01,861 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:58:01,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:58:01,861 INFO L85 PathProgramCache]: Analyzing trace with hash -784976670, now seen corresponding path program 11 times [2023-08-27 02:58:01,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:58:01,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021419113] [2023-08-27 02:58:01,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:58:01,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:58:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:58:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:58:02,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:58:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021419113] [2023-08-27 02:58:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021419113] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:58:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987134634] [2023-08-27 02:58:02,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 02:58:02,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:58:02,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:58:02,377 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:58:02,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 02:58:02,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-08-27 02:58:02,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:58:02,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-27 02:58:02,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:58:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:58:02,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:58:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:58:03,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987134634] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:58:03,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:58:03,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 47 [2023-08-27 02:58:03,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375404265] [2023-08-27 02:58:03,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:58:03,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-27 02:58:03,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:58:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-27 02:58:03,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=558, Invalid=1794, Unknown=0, NotChecked=0, Total=2352 [2023-08-27 02:58:03,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:58:03,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 1109 transitions, 34696 flow. Second operand has 49 states, 49 states have (on average 65.24489795918367) internal successors, (3197), 49 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:58:03,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:58:03,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:58:03,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:58:13,204 INFO L124 PetriNetUnfolderBase]: 9017/16458 cut-off events. [2023-08-27 02:58:13,204 INFO L125 PetriNetUnfolderBase]: For 1508162/1508162 co-relation queries the response was YES. [2023-08-27 02:58:13,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166576 conditions, 16458 events. 9017/16458 cut-off events. For 1508162/1508162 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 112712 event pairs, 569 based on Foata normal form. 376/16834 useless extension candidates. Maximal degree in co-relation 166387. Up to 7333 conditions per place. [2023-08-27 02:58:13,410 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 483 selfloop transitions, 1440 changer transitions 165/2088 dead transitions. [2023-08-27 02:58:13,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 2088 transitions, 62862 flow [2023-08-27 02:58:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-08-27 02:58:13,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2023-08-27 02:58:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 6410 transitions. [2023-08-27 02:58:13,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074497838799898 [2023-08-27 02:58:13,419 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 6410 transitions. [2023-08-27 02:58:13,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 6410 transitions. [2023-08-27 02:58:13,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:58:13,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 6410 transitions. [2023-08-27 02:58:13,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 69.67391304347827) internal successors, (6410), 92 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:58:13,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 171.0) internal successors, (15903), 93 states have internal predecessors, (15903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:58:13,444 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 171.0) internal successors, (15903), 93 states have internal predecessors, (15903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:58:13,445 INFO L175 Difference]: Start difference. First operand has 460 places, 1109 transitions, 34696 flow. Second operand 92 states and 6410 transitions. [2023-08-27 02:58:13,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 2088 transitions, 62862 flow [2023-08-27 02:58:22,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 2088 transitions, 61189 flow, removed 479 selfloop flow, removed 32 redundant places. [2023-08-27 02:58:22,505 INFO L231 Difference]: Finished difference. Result has 556 places, 1694 transitions, 52818 flow [2023-08-27 02:58:22,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=33679, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=872, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=52818, PETRI_PLACES=556, PETRI_TRANSITIONS=1694} [2023-08-27 02:58:22,507 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 530 predicate places. [2023-08-27 02:58:22,507 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 1694 transitions, 52818 flow [2023-08-27 02:58:22,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 65.24489795918367) internal successors, (3197), 49 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:58:22,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:58:22,508 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:58:22,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 02:58:22,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:58:22,709 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:58:22,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:58:22,709 INFO L85 PathProgramCache]: Analyzing trace with hash -615568578, now seen corresponding path program 3 times [2023-08-27 02:58:22,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:58:22,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071503591] [2023-08-27 02:58:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:58:22,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:58:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:58:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:58:23,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:58:23,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071503591] [2023-08-27 02:58:23,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071503591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:58:23,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281475264] [2023-08-27 02:58:23,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:58:23,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:58:23,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:58:23,502 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:58:23,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 02:58:23,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-08-27 02:58:23,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:58:23,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 02:58:23,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:58:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:58:24,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:58:24,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281475264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:58:24,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:58:24,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [41] total 63 [2023-08-27 02:58:24,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755549388] [2023-08-27 02:58:24,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:58:24,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 02:58:24,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:58:24,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 02:58:24,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=735, Invalid=3297, Unknown=0, NotChecked=0, Total=4032 [2023-08-27 02:58:24,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:58:24,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 1694 transitions, 52818 flow. Second operand has 23 states, 23 states have (on average 69.04347826086956) internal successors, (1588), 23 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:58:24,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:58:24,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:58:24,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:59:30,071 INFO L124 PetriNetUnfolderBase]: 80965/121790 cut-off events. [2023-08-27 02:59:30,071 INFO L125 PetriNetUnfolderBase]: For 4575894/4575894 co-relation queries the response was YES. [2023-08-27 02:59:33,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193551 conditions, 121790 events. 80965/121790 cut-off events. For 4575894/4575894 co-relation queries the response was YES. Maximal size of possible extension queue 2049. Compared 890342 event pairs, 1954 based on Foata normal form. 3444/125234 useless extension candidates. Maximal degree in co-relation 1193349. Up to 71263 conditions per place. [2023-08-27 02:59:33,837 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 61 selfloop transitions, 22 changer transitions 19255/19338 dead transitions. [2023-08-27 02:59:33,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 19338 transitions, 647634 flow [2023-08-27 02:59:33,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 02:59:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 02:59:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1742 transitions. [2023-08-27 02:59:33,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429188914314772 [2023-08-27 02:59:33,840 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1742 transitions. [2023-08-27 02:59:33,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1742 transitions. [2023-08-27 02:59:33,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:59:33,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1742 transitions. [2023-08-27 02:59:34,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 75.73913043478261) internal successors, (1742), 23 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:59:34,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 171.0) internal successors, (4104), 24 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:59:34,056 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 171.0) internal successors, (4104), 24 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:59:34,056 INFO L175 Difference]: Start difference. First operand has 556 places, 1694 transitions, 52818 flow. Second operand 23 states and 1742 transitions. [2023-08-27 02:59:34,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 19338 transitions, 647634 flow [2023-08-27 03:03:50,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 19338 transitions, 583356 flow, removed 7266 selfloop flow, removed 97 redundant places. [2023-08-27 03:03:50,395 INFO L231 Difference]: Finished difference. Result has 477 places, 52 transitions, 898 flow [2023-08-27 03:03:50,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=45145, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=898, PETRI_PLACES=477, PETRI_TRANSITIONS=52} [2023-08-27 03:03:50,396 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 451 predicate places. [2023-08-27 03:03:50,396 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 52 transitions, 898 flow [2023-08-27 03:03:50,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 69.04347826086956) internal successors, (1588), 23 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:03:50,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:03:50,397 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:03:50,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 03:03:50,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 03:03:50,599 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 03:03:50,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:03:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2121538429, now seen corresponding path program 12 times [2023-08-27 03:03:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:03:50,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466201220] [2023-08-27 03:03:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:03:50,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:03:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:03:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:03:51,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:03:51,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466201220] [2023-08-27 03:03:51,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466201220] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 03:03:51,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017948103] [2023-08-27 03:03:51,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 03:03:51,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 03:03:51,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:03:51,605 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 03:03:51,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 03:03:51,762 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2023-08-27 03:03:51,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 03:03:51,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-27 03:03:51,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 03:03:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:03:51,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 03:03:52,360 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:03:52,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017948103] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 03:03:52,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 03:03:52,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2023-08-27 03:03:52,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362005599] [2023-08-27 03:03:52,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 03:03:52,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-08-27 03:03:52,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:03:52,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-08-27 03:03:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1511, Unknown=0, NotChecked=0, Total=1980 [2023-08-27 03:03:52,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 03:03:52,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 52 transitions, 898 flow. Second operand has 45 states, 45 states have (on average 65.11111111111111) internal successors, (2930), 45 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:03:52,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:03:52,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 03:03:52,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:03:53,405 INFO L124 PetriNetUnfolderBase]: 57/160 cut-off events. [2023-08-27 03:03:53,405 INFO L125 PetriNetUnfolderBase]: For 20906/20906 co-relation queries the response was YES. [2023-08-27 03:03:53,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 160 events. 57/160 cut-off events. For 20906/20906 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 3 based on Foata normal form. 4/164 useless extension candidates. Maximal degree in co-relation 1074. Up to 51 conditions per place. [2023-08-27 03:03:53,406 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 0 selfloop transitions, 0 changer transitions 115/115 dead transitions. [2023-08-27 03:03:53,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 115 transitions, 1550 flow [2023-08-27 03:03:53,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-27 03:03:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-27 03:03:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2931 transitions. [2023-08-27 03:03:53,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38955342902711326 [2023-08-27 03:03:53,410 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2931 transitions. [2023-08-27 03:03:53,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2931 transitions. [2023-08-27 03:03:53,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:03:53,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2931 transitions. [2023-08-27 03:03:53,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 66.61363636363636) internal successors, (2931), 44 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:03:53,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 171.0) internal successors, (7695), 45 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:03:53,419 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 171.0) internal successors, (7695), 45 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:03:53,419 INFO L175 Difference]: Start difference. First operand has 477 places, 52 transitions, 898 flow. Second operand 44 states and 2931 transitions. [2023-08-27 03:03:53,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 115 transitions, 1550 flow [2023-08-27 03:03:53,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 115 transitions, 762 flow, removed 189 selfloop flow, removed 123 redundant places. [2023-08-27 03:03:53,428 INFO L231 Difference]: Finished difference. Result has 212 places, 0 transitions, 0 flow [2023-08-27 03:03:53,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=0, PETRI_PLACES=212, PETRI_TRANSITIONS=0} [2023-08-27 03:03:53,428 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 186 predicate places. [2023-08-27 03:03:53,428 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 0 transitions, 0 flow [2023-08-27 03:03:53,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 65.11111111111111) internal successors, (2930), 45 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:03:53,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (18 of 19 remaining) [2023-08-27 03:03:53,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 19 remaining) [2023-08-27 03:03:53,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 03:03:53,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 03:03:53,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 03:03:53,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 03:03:53,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 03:03:53,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 03:03:53,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 03:03:53,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-27 03:03:53,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 03:03:53,638 INFO L445 BasicCegarLoop]: Path program histogram: [12, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:03:53,643 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:03:53,643 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:03:53,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:03:53 BasicIcfg [2023-08-27 03:03:53,647 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:03:53,649 INFO L158 Benchmark]: Toolchain (without parser) took 398842.99ms. Allocated memory was 385.9MB in the beginning and 14.9GB in the end (delta: 14.5GB). Free memory was 360.6MB in the beginning and 7.9GB in the end (delta: -7.5GB). Peak memory consumption was 7.0GB. Max. memory is 16.0GB. [2023-08-27 03:03:53,651 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 385.9MB. Free memory was 363.8MB in the beginning and 363.7MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:03:53,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.45ms. Allocated memory is still 385.9MB. Free memory was 360.6MB in the beginning and 341.1MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 03:03:53,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.47ms. Allocated memory is still 385.9MB. Free memory was 341.1MB in the beginning and 339.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:03:53,653 INFO L158 Benchmark]: Boogie Preprocessor took 19.94ms. Allocated memory is still 385.9MB. Free memory was 339.0MB in the beginning and 337.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:03:53,653 INFO L158 Benchmark]: RCFGBuilder took 400.42ms. Allocated memory is still 385.9MB. Free memory was 337.6MB in the beginning and 323.6MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 03:03:53,653 INFO L158 Benchmark]: TraceAbstraction took 397970.89ms. Allocated memory was 385.9MB in the beginning and 14.9GB in the end (delta: 14.5GB). Free memory was 322.9MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 6.9GB. Max. memory is 16.0GB. [2023-08-27 03:03:53,654 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 385.9MB. Free memory was 363.8MB in the beginning and 363.7MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 392.45ms. Allocated memory is still 385.9MB. Free memory was 360.6MB in the beginning and 341.1MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.47ms. Allocated memory is still 385.9MB. Free memory was 341.1MB in the beginning and 339.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.94ms. Allocated memory is still 385.9MB. Free memory was 339.0MB in the beginning and 337.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 400.42ms. Allocated memory is still 385.9MB. Free memory was 337.6MB in the beginning and 323.6MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 397970.89ms. Allocated memory was 385.9MB in the beginning and 14.9GB in the end (delta: 14.5GB). Free memory was 322.9MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 6.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 83 PlacesBefore, 26 PlacesAfterwards, 82 TransitionsBefore, 22 TransitionsAfterwards, 2304 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 87 TotalNumberOfCompositions, 2595 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2174, independent: 2140, independent conditional: 0, independent unconditional: 2140, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1300, independent: 1287, independent conditional: 0, independent unconditional: 1287, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2174, independent: 853, independent conditional: 0, independent unconditional: 853, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 1300, unknown conditional: 0, unknown unconditional: 1300] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 693]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 115 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 397.8s, OverallIterations: 32, TraceHistogramMax: 20, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 381.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6936 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6936 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 542 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5542 IncrementalHoareTripleChecker+Invalid, 6084 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 542 mSolverCounterUnsat, 0 mSDtfsCounter, 5542 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1221 GetRequests, 341 SyntacticMatches, 47 SemanticMatches, 833 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17351 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52818occurred in iteration=30, InterpolantAutomatonStates: 571, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 112 NumberOfCheckSat, 932 ConstructedInterpolants, 0 QuantifiedInterpolants, 3402 SizeOfPredicates, 153 NumberOfNonLiveVariables, 3282 ConjunctsInSsa, 249 ConjunctsInUnsatCore, 61 InterpolantComputations, 19 PerfectInterpolantSequences, 403/3007 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 03:03:53,677 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 Received shutdown request...