/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/triangular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:37:11,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:37:11,839 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 09:37:11,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:37:11,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:37:11,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:37:11,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:37:11,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:37:11,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:37:11,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:37:11,877 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:37:11,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:37:11,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:37:11,879 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:37:11,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:37:11,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:37:11,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:37:11,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:37:11,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:37:11,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:37:11,880 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:37:11,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:37:11,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:37:11,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:37:11,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:37:11,882 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:37:11,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:37:11,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:37:11,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:37:11,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:37:11,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:37:11,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:37:11,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:37:11,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:37:11,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:37:11,885 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:37:12,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:37:12,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:37:12,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:37:12,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:37:12,226 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:37:12,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-2.i [2023-08-27 09:37:13,329 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:37:13,604 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:37:13,604 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i [2023-08-27 09:37:13,629 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcb17b6f0/d1895498179c4e6fa7ec984444e38a77/FLAGab4feca8a [2023-08-27 09:37:13,645 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcb17b6f0/d1895498179c4e6fa7ec984444e38a77 [2023-08-27 09:37:13,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:37:13,650 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:37:13,654 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:37:13,654 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:37:13,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:37:13,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:37:13" (1/1) ... [2023-08-27 09:37:13,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c96a2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:13, skipping insertion in model container [2023-08-27 09:37:13,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:37:13" (1/1) ... [2023-08-27 09:37:13,708 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:37:14,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:37:14,023 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:37:14,049 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 09:37:14,051 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 09:37:14,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:37:14,108 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:37:14,108 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:37:14,114 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:37:14,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14 WrapperNode [2023-08-27 09:37:14,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:37:14,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:37:14,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:37:14,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:37:14,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,156 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2023-08-27 09:37:14,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:37:14,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:37:14,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:37:14,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:37:14,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,174 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:37:14,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:37:14,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:37:14,182 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:37:14,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (1/1) ... [2023-08-27 09:37:14,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:37:14,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:14,210 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 09:37:14,212 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 09:37:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 09:37:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 09:37:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 09:37:14,241 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 09:37:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:37:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 09:37:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:37:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:37:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:37:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:37:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 09:37:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:37:14,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:37:14,243 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 09:37:14,340 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:37:14,341 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:37:14,558 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:37:14,581 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:37:14,581 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 09:37:14,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:37:14 BoogieIcfgContainer [2023-08-27 09:37:14,583 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:37:14,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:37:14,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:37:14,591 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:37:14,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:37:13" (1/3) ... [2023-08-27 09:37:14,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f967958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:37:14, skipping insertion in model container [2023-08-27 09:37:14,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:37:14" (2/3) ... [2023-08-27 09:37:14,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f967958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:37:14, skipping insertion in model container [2023-08-27 09:37:14,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:37:14" (3/3) ... [2023-08-27 09:37:14,593 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2023-08-27 09:37:14,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:37:14,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 09:37:14,609 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:37:14,689 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 09:37:14,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 178 flow [2023-08-27 09:37:14,797 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-08-27 09:37:14,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:37:14,804 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 09:37:14,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 84 transitions, 178 flow [2023-08-27 09:37:14,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 82 transitions, 170 flow [2023-08-27 09:37:14,811 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:37:14,824 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 82 transitions, 170 flow [2023-08-27 09:37:14,828 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 82 transitions, 170 flow [2023-08-27 09:37:14,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 170 flow [2023-08-27 09:37:14,855 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-08-27 09:37:14,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:37:14,857 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 09:37:14,859 INFO L119 LiptonReduction]: Number of co-enabled transitions 2304 [2023-08-27 09:37:17,339 INFO L134 LiptonReduction]: Checked pairs total: 2595 [2023-08-27 09:37:17,339 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-27 09:37:17,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:37:17,357 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;@647d7317, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:37:17,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 09:37:17,359 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:37:17,360 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-27 09:37:17,360 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:37:17,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:17,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 09:37:17,361 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 09:37:17,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:17,365 INFO L85 PathProgramCache]: Analyzing trace with hash 10934624, now seen corresponding path program 1 times [2023-08-27 09:37:17,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:17,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071314973] [2023-08-27 09:37:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:17,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:17,618 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 09:37:17,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:17,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071314973] [2023-08-27 09:37:17,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071314973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:17,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:17,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:37:17,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83207006] [2023-08-27 09:37:17,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:17,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:37:17,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:37:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:37:17,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 09:37:17,649 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 09:37:17,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:17,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 09:37:17,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:17,783 INFO L124 PetriNetUnfolderBase]: 415/650 cut-off events. [2023-08-27 09:37:17,783 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 09:37:17,787 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 09:37:17,794 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 28 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-08-27 09:37:17,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 134 flow [2023-08-27 09:37:17,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:37:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:37:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-08-27 09:37:17,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2023-08-27 09:37:17,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-08-27 09:37:17,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-08-27 09:37:17,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:17,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-08-27 09:37:17,820 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 09:37:17,824 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 09:37:17,824 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 09:37:17,826 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 3 states and 249 transitions. [2023-08-27 09:37:17,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 134 flow [2023-08-27 09:37:17,828 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 09:37:17,829 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 72 flow [2023-08-27 09:37:17,831 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 09:37:17,836 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-08-27 09:37:17,837 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 72 flow [2023-08-27 09:37:17,837 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 09:37:17,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:17,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 09:37:17,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:37:17,839 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 09:37:17,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:17,843 INFO L85 PathProgramCache]: Analyzing trace with hash 10934666, now seen corresponding path program 1 times [2023-08-27 09:37:17,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:17,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712117020] [2023-08-27 09:37:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:17,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:17,927 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 09:37:17,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:17,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712117020] [2023-08-27 09:37:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712117020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:17,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:17,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:37:17,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341246095] [2023-08-27 09:37:17,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:17,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:37:17,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:17,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:37:17,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:37:17,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 09:37:17,931 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 09:37:17,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:17,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 09:37:17,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:18,044 INFO L124 PetriNetUnfolderBase]: 601/944 cut-off events. [2023-08-27 09:37:18,045 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-27 09:37:18,046 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 09:37:18,051 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 37 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-27 09:37:18,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 39 transitions, 206 flow [2023-08-27 09:37:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:37:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:37:18,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-27 09:37:18,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600389863547758 [2023-08-27 09:37:18,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-27 09:37:18,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-27 09:37:18,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:18,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-27 09:37:18,057 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 09:37:18,060 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 09:37:18,060 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 09:37:18,060 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 72 flow. Second operand 3 states and 236 transitions. [2023-08-27 09:37:18,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 39 transitions, 206 flow [2023-08-27 09:37:18,064 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 09:37:18,065 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 78 flow [2023-08-27 09:37:18,066 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 09:37:18,067 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-27 09:37:18,067 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 78 flow [2023-08-27 09:37:18,068 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 09:37:18,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:18,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 09:37:18,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:37:18,072 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 09:37:18,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash 10934625, now seen corresponding path program 1 times [2023-08-27 09:37:18,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:18,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921572258] [2023-08-27 09:37:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:18,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:18,141 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 09:37:18,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:18,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921572258] [2023-08-27 09:37:18,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921572258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:18,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:18,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:37:18,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500052690] [2023-08-27 09:37:18,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:18,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:37:18,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:18,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:37:18,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:37:18,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 09:37:18,145 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 09:37:18,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:18,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 09:37:18,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:18,264 INFO L124 PetriNetUnfolderBase]: 581/952 cut-off events. [2023-08-27 09:37:18,264 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-27 09:37:18,265 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 09:37:18,271 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 31 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-08-27 09:37:18,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 198 flow [2023-08-27 09:37:18,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:37:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:37:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-08-27 09:37:18,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47173489278752434 [2023-08-27 09:37:18,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-08-27 09:37:18,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-08-27 09:37:18,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:18,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-08-27 09:37:18,273 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 09:37:18,275 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 09:37:18,276 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 09:37:18,276 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 78 flow. Second operand 3 states and 242 transitions. [2023-08-27 09:37:18,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 198 flow [2023-08-27 09:37:18,277 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 09:37:18,278 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 114 flow [2023-08-27 09:37:18,278 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 09:37:18,279 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-27 09:37:18,279 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 114 flow [2023-08-27 09:37:18,280 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 09:37:18,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:18,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 09:37:18,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:37:18,283 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 09:37:18,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash 338975209, now seen corresponding path program 1 times [2023-08-27 09:37:18,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:18,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649276522] [2023-08-27 09:37:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:18,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:18,375 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 09:37:18,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:18,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649276522] [2023-08-27 09:37:18,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649276522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:37:18,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603649097] [2023-08-27 09:37:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:18,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:37:18,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:18,381 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 09:37:18,412 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 09:37:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:18,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:37:18,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:37:18,505 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 09:37:18,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:37:18,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603649097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:18,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:37:18,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 09:37:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573610520] [2023-08-27 09:37:18,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:18,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:37:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:37:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:37:18,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 09:37:18,509 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 09:37:18,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:18,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 09:37:18,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:18,653 INFO L124 PetriNetUnfolderBase]: 505/834 cut-off events. [2023-08-27 09:37:18,653 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2023-08-27 09:37:18,654 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 09:37:18,658 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-27 09:37:18,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 57 transitions, 353 flow [2023-08-27 09:37:18,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:37:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:37:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-08-27 09:37:18,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2023-08-27 09:37:18,659 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-08-27 09:37:18,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-08-27 09:37:18,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:18,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-08-27 09:37:18,661 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 09:37:18,662 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 09:37:18,662 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 09:37:18,663 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 114 flow. Second operand 4 states and 312 transitions. [2023-08-27 09:37:18,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 57 transitions, 353 flow [2023-08-27 09:37:18,666 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 09:37:18,667 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 110 flow [2023-08-27 09:37:18,668 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 09:37:18,669 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-08-27 09:37:18,669 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 110 flow [2023-08-27 09:37:18,669 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 09:37:18,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:18,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 09:37:18,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 09:37:18,875 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 09:37:18,875 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 09:37:18,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1919052570, now seen corresponding path program 1 times [2023-08-27 09:37:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:18,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766034973] [2023-08-27 09:37:18,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:18,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:19,033 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 09:37:19,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:19,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766034973] [2023-08-27 09:37:19,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766034973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:19,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:19,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:37:19,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663202093] [2023-08-27 09:37:19,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:19,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:37:19,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:19,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:37:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:37:19,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:19,036 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 09:37:19,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:19,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:19,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:19,159 INFO L124 PetriNetUnfolderBase]: 521/920 cut-off events. [2023-08-27 09:37:19,160 INFO L125 PetriNetUnfolderBase]: For 675/675 co-relation queries the response was YES. [2023-08-27 09:37:19,161 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 09:37:19,165 INFO L140 encePairwiseOnDemand]: 161/171 looper letters, 44 selfloop transitions, 19 changer transitions 1/64 dead transitions. [2023-08-27 09:37:19,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 64 transitions, 410 flow [2023-08-27 09:37:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:37:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:37:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2023-08-27 09:37:19,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2023-08-27 09:37:19,167 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2023-08-27 09:37:19,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2023-08-27 09:37:19,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:19,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2023-08-27 09:37:19,169 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 09:37:19,170 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 09:37:19,170 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 09:37:19,171 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 110 flow. Second operand 5 states and 375 transitions. [2023-08-27 09:37:19,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 64 transitions, 410 flow [2023-08-27 09:37:19,172 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 09:37:19,173 INFO L231 Difference]: Finished difference. Result has 36 places, 43 transitions, 314 flow [2023-08-27 09:37:19,173 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 09:37:19,173 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-27 09:37:19,174 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 43 transitions, 314 flow [2023-08-27 09:37:19,174 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 09:37:19,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:19,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 09:37:19,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 09:37:19,174 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 09:37:19,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:19,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1919051912, now seen corresponding path program 1 times [2023-08-27 09:37:19,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:19,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584126261] [2023-08-27 09:37:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:19,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:19,198 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 09:37:19,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:19,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584126261] [2023-08-27 09:37:19,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584126261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:19,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:19,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:37:19,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633747316] [2023-08-27 09:37:19,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:19,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:37:19,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:19,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:37:19,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:37:19,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 09:37:19,200 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 09:37:19,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:19,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 09:37:19,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:19,294 INFO L124 PetriNetUnfolderBase]: 496/883 cut-off events. [2023-08-27 09:37:19,294 INFO L125 PetriNetUnfolderBase]: For 1257/1257 co-relation queries the response was YES. [2023-08-27 09:37:19,296 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 09:37:19,301 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-27 09:37:19,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 68 transitions, 619 flow [2023-08-27 09:37:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:37:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:37:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-27 09:37:19,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-08-27 09:37:19,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-27 09:37:19,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-27 09:37:19,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:19,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-27 09:37:19,304 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 09:37:19,306 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 09:37:19,306 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 09:37:19,306 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 314 flow. Second operand 3 states and 243 transitions. [2023-08-27 09:37:19,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 68 transitions, 619 flow [2023-08-27 09:37:19,309 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 09:37:19,310 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 358 flow [2023-08-27 09:37:19,311 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 09:37:19,311 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-08-27 09:37:19,311 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 358 flow [2023-08-27 09:37:19,312 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 09:37:19,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:19,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 09:37:19,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 09:37:19,312 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 09:37:19,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:19,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1919051955, now seen corresponding path program 1 times [2023-08-27 09:37:19,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:19,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596190553] [2023-08-27 09:37:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:19,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:19,339 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 09:37:19,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:19,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596190553] [2023-08-27 09:37:19,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596190553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:19,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:19,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:37:19,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347118641] [2023-08-27 09:37:19,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:19,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:37:19,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:19,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:37:19,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:37:19,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 09:37:19,342 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 09:37:19,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:19,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 09:37:19,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:19,445 INFO L124 PetriNetUnfolderBase]: 452/823 cut-off events. [2023-08-27 09:37:19,445 INFO L125 PetriNetUnfolderBase]: For 1806/1806 co-relation queries the response was YES. [2023-08-27 09:37:19,448 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 09:37:19,453 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 51 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-08-27 09:37:19,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 543 flow [2023-08-27 09:37:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:37:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:37:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-27 09:37:19,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44834307992202727 [2023-08-27 09:37:19,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-27 09:37:19,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-27 09:37:19,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:19,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-27 09:37:19,456 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 09:37:19,457 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 09:37:19,457 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 09:37:19,457 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 358 flow. Second operand 3 states and 230 transitions. [2023-08-27 09:37:19,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 543 flow [2023-08-27 09:37:19,462 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 09:37:19,463 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 325 flow [2023-08-27 09:37:19,463 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 09:37:19,463 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-08-27 09:37:19,464 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 325 flow [2023-08-27 09:37:19,464 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 09:37:19,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:19,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:19,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 09:37:19,464 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 09:37:19,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash -638931166, now seen corresponding path program 1 times [2023-08-27 09:37:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:19,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464434302] [2023-08-27 09:37:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:19,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:19,521 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 09:37:19,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:19,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464434302] [2023-08-27 09:37:19,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464434302] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:37:19,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690178070] [2023-08-27 09:37:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:19,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:37:19,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:19,525 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 09:37:19,549 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 09:37:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:19,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:37:19,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:37:19,602 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 09:37:19,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:37:19,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690178070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:19,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:37:19,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 09:37:19,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819792366] [2023-08-27 09:37:19,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:19,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:37:19,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:37:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:37:19,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 09:37:19,605 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 09:37:19,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:19,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 09:37:19,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:19,725 INFO L124 PetriNetUnfolderBase]: 378/689 cut-off events. [2023-08-27 09:37:19,725 INFO L125 PetriNetUnfolderBase]: For 1453/1453 co-relation queries the response was YES. [2023-08-27 09:37:19,726 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 09:37:19,730 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 53 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-08-27 09:37:19,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 550 flow [2023-08-27 09:37:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:37:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:37:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2023-08-27 09:37:19,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2023-08-27 09:37:19,732 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 303 transitions. [2023-08-27 09:37:19,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 303 transitions. [2023-08-27 09:37:19,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:19,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 303 transitions. [2023-08-27 09:37:19,733 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 09:37:19,734 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 09:37:19,734 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 09:37:19,735 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 325 flow. Second operand 4 states and 303 transitions. [2023-08-27 09:37:19,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 550 flow [2023-08-27 09:37:19,738 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 09:37:19,739 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 278 flow [2023-08-27 09:37:19,739 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 09:37:19,739 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2023-08-27 09:37:19,740 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 278 flow [2023-08-27 09:37:19,740 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 09:37:19,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:19,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:19,749 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 09:37:19,945 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 09:37:19,946 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 09:37:19,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:19,946 INFO L85 PathProgramCache]: Analyzing trace with hash -638931208, now seen corresponding path program 1 times [2023-08-27 09:37:19,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:19,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055385839] [2023-08-27 09:37:19,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:19,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:19,970 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 09:37:19,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:19,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055385839] [2023-08-27 09:37:19,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055385839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:19,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:19,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:37:19,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874834640] [2023-08-27 09:37:19,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:19,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:37:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:37:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:37:19,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 09:37:19,972 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 09:37:19,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:19,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 09:37:19,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:20,047 INFO L124 PetriNetUnfolderBase]: 358/667 cut-off events. [2023-08-27 09:37:20,048 INFO L125 PetriNetUnfolderBase]: For 1658/1658 co-relation queries the response was YES. [2023-08-27 09:37:20,049 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 09:37:20,053 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 44 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-08-27 09:37:20,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 493 flow [2023-08-27 09:37:20,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:37:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:37:20,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-27 09:37:20,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2023-08-27 09:37:20,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-27 09:37:20,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-27 09:37:20,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:20,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-27 09:37:20,056 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 09:37:20,057 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 09:37:20,057 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 09:37:20,057 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 278 flow. Second operand 3 states and 240 transitions. [2023-08-27 09:37:20,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 493 flow [2023-08-27 09:37:20,060 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 09:37:20,061 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 290 flow [2023-08-27 09:37:20,061 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 09:37:20,062 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2023-08-27 09:37:20,062 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 290 flow [2023-08-27 09:37:20,062 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 09:37:20,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:20,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:20,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 09:37:20,063 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 09:37:20,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:20,063 INFO L85 PathProgramCache]: Analyzing trace with hash 928422854, now seen corresponding path program 1 times [2023-08-27 09:37:20,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:20,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305167929] [2023-08-27 09:37:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:20,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:20,090 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 09:37:20,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:20,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305167929] [2023-08-27 09:37:20,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305167929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:20,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:20,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:37:20,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224626737] [2023-08-27 09:37:20,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:20,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:37:20,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:20,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:37:20,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:37:20,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 09:37:20,092 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 09:37:20,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:20,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 09:37:20,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:20,196 INFO L124 PetriNetUnfolderBase]: 436/785 cut-off events. [2023-08-27 09:37:20,196 INFO L125 PetriNetUnfolderBase]: For 2135/2135 co-relation queries the response was YES. [2023-08-27 09:37:20,197 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 09:37:20,202 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 50 selfloop transitions, 19 changer transitions 0/69 dead transitions. [2023-08-27 09:37:20,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 677 flow [2023-08-27 09:37:20,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:37:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:37:20,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2023-08-27 09:37:20,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-27 09:37:20,204 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 380 transitions. [2023-08-27 09:37:20,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 380 transitions. [2023-08-27 09:37:20,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:20,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 380 transitions. [2023-08-27 09:37:20,205 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 09:37:20,206 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 09:37:20,206 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 09:37:20,207 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 290 flow. Second operand 5 states and 380 transitions. [2023-08-27 09:37:20,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 677 flow [2023-08-27 09:37:20,210 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 09:37:20,211 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 466 flow [2023-08-27 09:37:20,211 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 09:37:20,212 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2023-08-27 09:37:20,212 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 466 flow [2023-08-27 09:37:20,212 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 09:37:20,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:20,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:20,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 09:37:20,213 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 09:37:20,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash 930812023, now seen corresponding path program 1 times [2023-08-27 09:37:20,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:20,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071275150] [2023-08-27 09:37:20,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:20,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:20,241 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 09:37:20,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:20,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071275150] [2023-08-27 09:37:20,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071275150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:20,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:20,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:37:20,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391618370] [2023-08-27 09:37:20,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:20,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:37:20,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:20,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:37:20,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:37:20,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 09:37:20,244 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 09:37:20,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:20,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 09:37:20,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:20,366 INFO L124 PetriNetUnfolderBase]: 446/823 cut-off events. [2023-08-27 09:37:20,366 INFO L125 PetriNetUnfolderBase]: For 3657/3657 co-relation queries the response was YES. [2023-08-27 09:37:20,368 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 09:37:20,373 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 60 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2023-08-27 09:37:20,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 773 flow [2023-08-27 09:37:20,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:37:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:37:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-27 09:37:20,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44678362573099417 [2023-08-27 09:37:20,374 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-27 09:37:20,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-27 09:37:20,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:20,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-27 09:37:20,376 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 09:37:20,377 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 09:37:20,377 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 09:37:20,378 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 466 flow. Second operand 5 states and 382 transitions. [2023-08-27 09:37:20,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 773 flow [2023-08-27 09:37:20,383 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 09:37:20,385 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 502 flow [2023-08-27 09:37:20,385 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 09:37:20,386 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2023-08-27 09:37:20,386 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 502 flow [2023-08-27 09:37:20,386 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 09:37:20,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:20,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:20,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 09:37:20,386 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 09:37:20,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash 928477451, now seen corresponding path program 1 times [2023-08-27 09:37:20,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:20,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156633620] [2023-08-27 09:37:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:20,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:37:20,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:20,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156633620] [2023-08-27 09:37:20,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156633620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:20,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:20,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:37:20,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509362226] [2023-08-27 09:37:20,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:20,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:37:20,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:20,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:37:20,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:37:20,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:20,483 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 09:37:20,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:20,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:20,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:20,613 INFO L124 PetriNetUnfolderBase]: 432/821 cut-off events. [2023-08-27 09:37:20,613 INFO L125 PetriNetUnfolderBase]: For 3618/3618 co-relation queries the response was YES. [2023-08-27 09:37:20,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3951 conditions, 821 events. 432/821 cut-off events. For 3618/3618 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 4487 event pairs, 155 based on Foata normal form. 5/826 useless extension candidates. Maximal degree in co-relation 3920. Up to 649 conditions per place. [2023-08-27 09:37:20,620 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 49 selfloop transitions, 21 changer transitions 0/70 dead transitions. [2023-08-27 09:37:20,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 807 flow [2023-08-27 09:37:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:37:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:37:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2023-08-27 09:37:20,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152046783625731 [2023-08-27 09:37:20,622 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 426 transitions. [2023-08-27 09:37:20,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 426 transitions. [2023-08-27 09:37:20,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:20,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 426 transitions. [2023-08-27 09:37:20,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:20,626 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 09:37:20,627 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 09:37:20,627 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 502 flow. Second operand 6 states and 426 transitions. [2023-08-27 09:37:20,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 807 flow [2023-08-27 09:37:20,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 807 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:37:20,635 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 638 flow [2023-08-27 09:37:20,636 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=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=638, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-27 09:37:20,637 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2023-08-27 09:37:20,638 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 638 flow [2023-08-27 09:37:20,638 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 09:37:20,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:20,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:20,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 09:37:20,639 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 09:37:20,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:20,639 INFO L85 PathProgramCache]: Analyzing trace with hash 928422548, now seen corresponding path program 1 times [2023-08-27 09:37:20,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:20,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824026926] [2023-08-27 09:37:20,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:20,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:20,672 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 09:37:20,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:20,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824026926] [2023-08-27 09:37:20,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824026926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:20,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:20,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:37:20,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946534095] [2023-08-27 09:37:20,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:20,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:37:20,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:20,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:37:20,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:37:20,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 09:37:20,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 638 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 09:37:20,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:20,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 09:37:20,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:20,763 INFO L124 PetriNetUnfolderBase]: 335/597 cut-off events. [2023-08-27 09:37:20,763 INFO L125 PetriNetUnfolderBase]: For 3591/3591 co-relation queries the response was YES. [2023-08-27 09:37:20,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3079 conditions, 597 events. 335/597 cut-off events. For 3591/3591 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2729 event pairs, 165 based on Foata normal form. 50/647 useless extension candidates. Maximal degree in co-relation 3043. Up to 597 conditions per place. [2023-08-27 09:37:20,769 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-27 09:37:20,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 38 transitions, 489 flow [2023-08-27 09:37:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:37:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:37:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-08-27 09:37:20,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249512670565302 [2023-08-27 09:37:20,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-08-27 09:37:20,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-08-27 09:37:20,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:20,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-08-27 09:37:20,771 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 09:37:20,772 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 09:37:20,772 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 09:37:20,772 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 638 flow. Second operand 3 states and 218 transitions. [2023-08-27 09:37:20,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 38 transitions, 489 flow [2023-08-27 09:37:20,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 38 transitions, 448 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-27 09:37:20,779 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 374 flow [2023-08-27 09:37:20,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-08-27 09:37:20,780 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2023-08-27 09:37:20,780 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 374 flow [2023-08-27 09:37:20,780 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 09:37:20,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:20,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:20,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 09:37:20,781 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 09:37:20,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash 928422549, now seen corresponding path program 1 times [2023-08-27 09:37:20,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:20,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814362154] [2023-08-27 09:37:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:20,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:20,810 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 09:37:20,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:20,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814362154] [2023-08-27 09:37:20,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814362154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:20,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:20,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:37:20,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048364744] [2023-08-27 09:37:20,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:20,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:37:20,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:37:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:37:20,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 09:37:20,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 374 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 09:37:20,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:20,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 09:37:20,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:20,941 INFO L124 PetriNetUnfolderBase]: 369/651 cut-off events. [2023-08-27 09:37:20,941 INFO L125 PetriNetUnfolderBase]: For 2563/2563 co-relation queries the response was YES. [2023-08-27 09:37:20,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 651 events. 369/651 cut-off events. For 2563/2563 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2956 event pairs, 122 based on Foata normal form. 24/675 useless extension candidates. Maximal degree in co-relation 3016. Up to 482 conditions per place. [2023-08-27 09:37:20,947 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 51 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-08-27 09:37:20,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 622 flow [2023-08-27 09:37:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:37:20,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:37:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2023-08-27 09:37:20,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43742690058479533 [2023-08-27 09:37:20,949 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2023-08-27 09:37:20,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2023-08-27 09:37:20,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:20,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2023-08-27 09:37:20,950 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 09:37:20,952 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 09:37:20,952 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 09:37:20,952 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 374 flow. Second operand 5 states and 374 transitions. [2023-08-27 09:37:20,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 622 flow [2023-08-27 09:37:20,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 613 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 09:37:20,958 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 411 flow [2023-08-27 09:37:20,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-08-27 09:37:20,958 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2023-08-27 09:37:20,958 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 411 flow [2023-08-27 09:37:20,959 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 09:37:20,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:20,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:20,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 09:37:20,959 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 09:37:20,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:20,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1667943794, now seen corresponding path program 1 times [2023-08-27 09:37:20,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:20,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571058703] [2023-08-27 09:37:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:20,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:21,092 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 09:37:21,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571058703] [2023-08-27 09:37:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571058703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:21,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:21,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:37:21,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986982714] [2023-08-27 09:37:21,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:21,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:37:21,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:21,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:37:21,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:37:21,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:21,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 411 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 09:37:21,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:21,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:21,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:21,227 INFO L124 PetriNetUnfolderBase]: 401/707 cut-off events. [2023-08-27 09:37:21,227 INFO L125 PetriNetUnfolderBase]: For 3004/3004 co-relation queries the response was YES. [2023-08-27 09:37:21,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 707 events. 401/707 cut-off events. For 3004/3004 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3338 event pairs, 94 based on Foata normal form. 12/719 useless extension candidates. Maximal degree in co-relation 3388. Up to 451 conditions per place. [2023-08-27 09:37:21,234 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 55 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2023-08-27 09:37:21,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 844 flow [2023-08-27 09:37:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:37:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:37:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2023-08-27 09:37:21,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171539961013645 [2023-08-27 09:37:21,236 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2023-08-27 09:37:21,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2023-08-27 09:37:21,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:21,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2023-08-27 09:37:21,238 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 09:37:21,239 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 09:37:21,240 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 09:37:21,240 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 411 flow. Second operand 6 states and 428 transitions. [2023-08-27 09:37:21,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 844 flow [2023-08-27 09:37:21,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 824 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 09:37:21,247 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 622 flow [2023-08-27 09:37:21,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=622, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2023-08-27 09:37:21,247 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2023-08-27 09:37:21,248 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 622 flow [2023-08-27 09:37:21,248 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 09:37:21,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:21,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:21,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 09:37:21,248 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 09:37:21,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1667969834, now seen corresponding path program 2 times [2023-08-27 09:37:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439274420] [2023-08-27 09:37:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:21,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:21,313 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 09:37:21,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:21,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439274420] [2023-08-27 09:37:21,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439274420] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:21,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:21,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:37:21,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194190919] [2023-08-27 09:37:21,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:21,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:37:21,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:21,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:37:21,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:37:21,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:21,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 622 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 09:37:21,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:21,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:21,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:21,445 INFO L124 PetriNetUnfolderBase]: 371/649 cut-off events. [2023-08-27 09:37:21,446 INFO L125 PetriNetUnfolderBase]: For 4107/4107 co-relation queries the response was YES. [2023-08-27 09:37:21,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 649 events. 371/649 cut-off events. For 4107/4107 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2889 event pairs, 126 based on Foata normal form. 22/671 useless extension candidates. Maximal degree in co-relation 3478. Up to 486 conditions per place. [2023-08-27 09:37:21,451 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 51 selfloop transitions, 20 changer transitions 4/75 dead transitions. [2023-08-27 09:37:21,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 936 flow [2023-08-27 09:37:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:37:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:37:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 496 transitions. [2023-08-27 09:37:21,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143692564745196 [2023-08-27 09:37:21,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 496 transitions. [2023-08-27 09:37:21,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 496 transitions. [2023-08-27 09:37:21,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:21,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 496 transitions. [2023-08-27 09:37:21,454 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 09:37:21,456 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 09:37:21,456 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 09:37:21,457 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 622 flow. Second operand 7 states and 496 transitions. [2023-08-27 09:37:21,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 936 flow [2023-08-27 09:37:21,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 916 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-27 09:37:21,466 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 745 flow [2023-08-27 09:37:21,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=745, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2023-08-27 09:37:21,466 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-08-27 09:37:21,467 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 745 flow [2023-08-27 09:37:21,467 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 09:37:21,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:21,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:21,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 09:37:21,467 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 09:37:21,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1283660960, now seen corresponding path program 1 times [2023-08-27 09:37:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:21,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461642011] [2023-08-27 09:37:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:21,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:21,499 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 09:37:21,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:21,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461642011] [2023-08-27 09:37:21,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461642011] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:37:21,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6864706] [2023-08-27 09:37:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:21,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:37:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:21,501 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 09:37:21,526 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 09:37:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:21,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:37:21,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:37:21,586 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 09:37:21,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:37:21,616 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 09:37:21,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6864706] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:37:21,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:37:21,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 09:37:21,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019025659] [2023-08-27 09:37:21,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:37:21,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 09:37:21,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:21,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 09:37:21,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 09:37:21,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 09:37:21,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 745 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 09:37:21,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:21,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 09:37:21,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:21,791 INFO L124 PetriNetUnfolderBase]: 527/887 cut-off events. [2023-08-27 09:37:21,791 INFO L125 PetriNetUnfolderBase]: For 7524/7524 co-relation queries the response was YES. [2023-08-27 09:37:21,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4957 conditions, 887 events. 527/887 cut-off events. For 7524/7524 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3804 event pairs, 53 based on Foata normal form. 94/981 useless extension candidates. Maximal degree in co-relation 4916. Up to 283 conditions per place. [2023-08-27 09:37:21,798 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 72 selfloop transitions, 35 changer transitions 1/108 dead transitions. [2023-08-27 09:37:21,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 108 transitions, 1445 flow [2023-08-27 09:37:21,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:37:21,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:37:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 669 transitions. [2023-08-27 09:37:21,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346978557504873 [2023-08-27 09:37:21,801 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 669 transitions. [2023-08-27 09:37:21,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 669 transitions. [2023-08-27 09:37:21,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:21,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 669 transitions. [2023-08-27 09:37:21,803 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 09:37:21,805 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 09:37:21,805 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 09:37:21,806 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 745 flow. Second operand 9 states and 669 transitions. [2023-08-27 09:37:21,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 108 transitions, 1445 flow [2023-08-27 09:37:21,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 1393 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-27 09:37:21,819 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 1035 flow [2023-08-27 09:37:21,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1035, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2023-08-27 09:37:21,819 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 59 predicate places. [2023-08-27 09:37:21,819 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 1035 flow [2023-08-27 09:37:21,820 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 09:37:21,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:21,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:21,830 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 09:37:22,030 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 09:37:22,031 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 09:37:22,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:22,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1157182881, now seen corresponding path program 1 times [2023-08-27 09:37:22,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:22,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856618335] [2023-08-27 09:37:22,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:22,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:22,110 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 09:37:22,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:22,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856618335] [2023-08-27 09:37:22,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856618335] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:22,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:22,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:37:22,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69839779] [2023-08-27 09:37:22,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:22,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:37:22,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:22,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:37:22,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:37:22,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:22,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 1035 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 09:37:22,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:22,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:22,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:22,297 INFO L124 PetriNetUnfolderBase]: 567/959 cut-off events. [2023-08-27 09:37:22,297 INFO L125 PetriNetUnfolderBase]: For 10718/10718 co-relation queries the response was YES. [2023-08-27 09:37:22,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6238 conditions, 959 events. 567/959 cut-off events. For 10718/10718 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4277 event pairs, 154 based on Foata normal form. 8/967 useless extension candidates. Maximal degree in co-relation 6190. Up to 654 conditions per place. [2023-08-27 09:37:22,305 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 79 selfloop transitions, 29 changer transitions 1/109 dead transitions. [2023-08-27 09:37:22,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 109 transitions, 1634 flow [2023-08-27 09:37:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 09:37:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 09:37:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 563 transitions. [2023-08-27 09:37:22,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41154970760233917 [2023-08-27 09:37:22,307 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 563 transitions. [2023-08-27 09:37:22,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 563 transitions. [2023-08-27 09:37:22,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:22,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 563 transitions. [2023-08-27 09:37:22,309 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 09:37:22,311 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 09:37:22,311 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 09:37:22,311 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 1035 flow. Second operand 8 states and 563 transitions. [2023-08-27 09:37:22,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 109 transitions, 1634 flow [2023-08-27 09:37:22,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 109 transitions, 1583 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-27 09:37:22,333 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 1245 flow [2023-08-27 09:37:22,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1245, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2023-08-27 09:37:22,334 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 68 predicate places. [2023-08-27 09:37:22,334 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 1245 flow [2023-08-27 09:37:22,334 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 09:37:22,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:22,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:22,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 09:37:22,335 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 09:37:22,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1157208921, now seen corresponding path program 2 times [2023-08-27 09:37:22,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:22,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626548837] [2023-08-27 09:37:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:22,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:22,491 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 09:37:22,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:22,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626548837] [2023-08-27 09:37:22,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626548837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:37:22,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:37:22,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:37:22,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897415279] [2023-08-27 09:37:22,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:37:22,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:37:22,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:22,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:37:22,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:37:22,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:22,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 1245 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 09:37:22,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:22,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:22,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:22,703 INFO L124 PetriNetUnfolderBase]: 543/919 cut-off events. [2023-08-27 09:37:22,703 INFO L125 PetriNetUnfolderBase]: For 11944/11944 co-relation queries the response was YES. [2023-08-27 09:37:22,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6232 conditions, 919 events. 543/919 cut-off events. For 11944/11944 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4028 event pairs, 138 based on Foata normal form. 8/927 useless extension candidates. Maximal degree in co-relation 6179. Up to 574 conditions per place. [2023-08-27 09:37:22,712 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 67 selfloop transitions, 33 changer transitions 8/108 dead transitions. [2023-08-27 09:37:22,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 1686 flow [2023-08-27 09:37:22,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 09:37:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 09:37:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 561 transitions. [2023-08-27 09:37:22,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4100877192982456 [2023-08-27 09:37:22,714 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 561 transitions. [2023-08-27 09:37:22,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 561 transitions. [2023-08-27 09:37:22,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:22,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 561 transitions. [2023-08-27 09:37:22,716 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 09:37:22,717 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 09:37:22,718 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 09:37:22,718 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 1245 flow. Second operand 8 states and 561 transitions. [2023-08-27 09:37:22,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 1686 flow [2023-08-27 09:37:22,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 108 transitions, 1633 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-08-27 09:37:22,743 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 1326 flow [2023-08-27 09:37:22,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1326, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2023-08-27 09:37:22,744 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2023-08-27 09:37:22,744 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 1326 flow [2023-08-27 09:37:22,744 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 09:37:22,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:22,745 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:22,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 09:37:22,745 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 09:37:22,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash -977605308, now seen corresponding path program 3 times [2023-08-27 09:37:22,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:22,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275108564] [2023-08-27 09:37:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:22,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:22,846 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 09:37:22,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:22,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275108564] [2023-08-27 09:37:22,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275108564] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:37:22,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396488551] [2023-08-27 09:37:22,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 09:37:22,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:37:22,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:22,849 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 09:37:22,851 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 09:37:22,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 09:37:22,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:37:22,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 09:37:22,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:37:22,966 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 09:37:22,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:37:23,068 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 09:37:23,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396488551] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:37:23,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:37:23,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 09:37:23,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186775085] [2023-08-27 09:37:23,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:37:23,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 09:37:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 09:37:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-27 09:37:23,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:23,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 1326 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 09:37:23,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:23,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:23,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:23,402 INFO L124 PetriNetUnfolderBase]: 659/1127 cut-off events. [2023-08-27 09:37:23,403 INFO L125 PetriNetUnfolderBase]: For 17674/17674 co-relation queries the response was YES. [2023-08-27 09:37:23,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7638 conditions, 1127 events. 659/1127 cut-off events. For 17674/17674 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5330 event pairs, 158 based on Foata normal form. 60/1187 useless extension candidates. Maximal degree in co-relation 7582. Up to 605 conditions per place. [2023-08-27 09:37:23,414 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 88 selfloop transitions, 50 changer transitions 16/154 dead transitions. [2023-08-27 09:37:23,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 154 transitions, 2337 flow [2023-08-27 09:37:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 09:37:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 09:37:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 919 transitions. [2023-08-27 09:37:23,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41340530814215026 [2023-08-27 09:37:23,417 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 919 transitions. [2023-08-27 09:37:23,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 919 transitions. [2023-08-27 09:37:23,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:23,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 919 transitions. [2023-08-27 09:37:23,420 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 09:37:23,431 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 09:37:23,431 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 09:37:23,431 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 1326 flow. Second operand 13 states and 919 transitions. [2023-08-27 09:37:23,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 154 transitions, 2337 flow [2023-08-27 09:37:23,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 154 transitions, 2233 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-08-27 09:37:23,470 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 1719 flow [2023-08-27 09:37:23,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1719, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2023-08-27 09:37:23,471 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 86 predicate places. [2023-08-27 09:37:23,471 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 1719 flow [2023-08-27 09:37:23,477 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 09:37:23,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:23,478 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:23,484 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 09:37:23,684 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 09:37:23,684 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 09:37:23,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:23,685 INFO L85 PathProgramCache]: Analyzing trace with hash -952580868, now seen corresponding path program 4 times [2023-08-27 09:37:23,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:23,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374223060] [2023-08-27 09:37:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:23,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:37:23,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:23,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374223060] [2023-08-27 09:37:23,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374223060] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:37:23,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994982731] [2023-08-27 09:37:23,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 09:37:23,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:37:23,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:23,781 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 09:37:23,783 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 09:37:23,850 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 09:37:23,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:37:23,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 09:37:23,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:37:23,892 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 09:37:23,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:37:23,987 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 09:37:23,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994982731] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:37:23,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:37:23,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 09:37:23,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053063202] [2023-08-27 09:37:23,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:37:23,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 09:37:23,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:23,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 09:37:23,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-27 09:37:23,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:23,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 1719 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 09:37:23,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:23,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:23,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:24,568 INFO L124 PetriNetUnfolderBase]: 843/1451 cut-off events. [2023-08-27 09:37:24,568 INFO L125 PetriNetUnfolderBase]: For 30406/30406 co-relation queries the response was YES. [2023-08-27 09:37:24,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10477 conditions, 1451 events. 843/1451 cut-off events. For 30406/30406 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7364 event pairs, 164 based on Foata normal form. 74/1525 useless extension candidates. Maximal degree in co-relation 10416. Up to 529 conditions per place. [2023-08-27 09:37:24,584 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 109 selfloop transitions, 84 changer transitions 22/215 dead transitions. [2023-08-27 09:37:24,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 215 transitions, 3540 flow [2023-08-27 09:37:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 09:37:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 09:37:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1266 transitions. [2023-08-27 09:37:24,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41130604288499023 [2023-08-27 09:37:24,588 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1266 transitions. [2023-08-27 09:37:24,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1266 transitions. [2023-08-27 09:37:24,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:24,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1266 transitions. [2023-08-27 09:37:24,592 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 09:37:24,596 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 09:37:24,597 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 09:37:24,597 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 1719 flow. Second operand 18 states and 1266 transitions. [2023-08-27 09:37:24,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 215 transitions, 3540 flow [2023-08-27 09:37:24,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 215 transitions, 3407 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-08-27 09:37:24,654 INFO L231 Difference]: Finished difference. Result has 135 places, 146 transitions, 2635 flow [2023-08-27 09:37:24,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2635, PETRI_PLACES=135, PETRI_TRANSITIONS=146} [2023-08-27 09:37:24,654 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 109 predicate places. [2023-08-27 09:37:24,654 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 146 transitions, 2635 flow [2023-08-27 09:37:24,655 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 09:37:24,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:24,655 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:24,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-27 09:37:24,855 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 09:37:24,856 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 09:37:24,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:24,856 INFO L85 PathProgramCache]: Analyzing trace with hash 820767897, now seen corresponding path program 5 times [2023-08-27 09:37:24,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:24,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194459682] [2023-08-27 09:37:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:24,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:24,968 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 09:37:24,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:24,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194459682] [2023-08-27 09:37:24,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194459682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:37:24,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730355117] [2023-08-27 09:37:24,968 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 09:37:24,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:37:24,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:24,969 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 09:37:24,972 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 09:37:25,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 09:37:25,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:37:25,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 09:37:25,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:37:25,076 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 09:37:25,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:37:25,160 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 09:37:25,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730355117] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:37:25,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:37:25,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 09:37:25,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832277821] [2023-08-27 09:37:25,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:37:25,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 09:37:25,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:25,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 09:37:25,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-27 09:37:25,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:25,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 146 transitions, 2635 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 09:37:25,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:25,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:25,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:25,753 INFO L124 PetriNetUnfolderBase]: 1077/1873 cut-off events. [2023-08-27 09:37:25,754 INFO L125 PetriNetUnfolderBase]: For 50339/50339 co-relation queries the response was YES. [2023-08-27 09:37:25,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15065 conditions, 1873 events. 1077/1873 cut-off events. For 50339/50339 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10280 event pairs, 182 based on Foata normal form. 70/1943 useless extension candidates. Maximal degree in co-relation 14994. Up to 717 conditions per place. [2023-08-27 09:37:25,777 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 130 selfloop transitions, 117 changer transitions 19/266 dead transitions. [2023-08-27 09:37:25,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 266 transitions, 4982 flow [2023-08-27 09:37:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 09:37:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 09:37:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1332 transitions. [2023-08-27 09:37:25,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099722991689751 [2023-08-27 09:37:25,782 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1332 transitions. [2023-08-27 09:37:25,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1332 transitions. [2023-08-27 09:37:25,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:25,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1332 transitions. [2023-08-27 09:37:25,788 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 09:37:25,792 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 09:37:25,793 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 09:37:25,793 INFO L175 Difference]: Start difference. First operand has 135 places, 146 transitions, 2635 flow. Second operand 19 states and 1332 transitions. [2023-08-27 09:37:25,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 266 transitions, 4982 flow [2023-08-27 09:37:25,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 266 transitions, 4746 flow, removed 102 selfloop flow, removed 6 redundant places. [2023-08-27 09:37:25,931 INFO L231 Difference]: Finished difference. Result has 157 places, 191 transitions, 3745 flow [2023-08-27 09:37:25,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3745, PETRI_PLACES=157, PETRI_TRANSITIONS=191} [2023-08-27 09:37:25,932 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 131 predicate places. [2023-08-27 09:37:25,932 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 191 transitions, 3745 flow [2023-08-27 09:37:25,932 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 09:37:25,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:25,932 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:25,939 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 09:37:26,138 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 09:37:26,138 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 09:37:26,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash -317607516, now seen corresponding path program 1 times [2023-08-27 09:37:26,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:26,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071256947] [2023-08-27 09:37:26,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:26,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:37:26,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:26,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071256947] [2023-08-27 09:37:26,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071256947] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:37:26,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586299179] [2023-08-27 09:37:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:26,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:37:26,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:26,202 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 09:37:26,205 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 09:37:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:26,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 09:37:26,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:37:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:37:26,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:37:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:37:26,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586299179] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:37:26,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:37:26,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 09:37:26,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425676995] [2023-08-27 09:37:26,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:37:26,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 09:37:26,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:26,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 09:37:26,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 09:37:26,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 09:37:26,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 191 transitions, 3745 flow. Second operand has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:26,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:26,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 09:37:26,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:27,007 INFO L124 PetriNetUnfolderBase]: 1493/2546 cut-off events. [2023-08-27 09:37:27,008 INFO L125 PetriNetUnfolderBase]: For 97019/97019 co-relation queries the response was YES. [2023-08-27 09:37:27,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21981 conditions, 2546 events. 1493/2546 cut-off events. For 97019/97019 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13344 event pairs, 147 based on Foata normal form. 230/2776 useless extension candidates. Maximal degree in co-relation 21902. Up to 989 conditions per place. [2023-08-27 09:37:27,039 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 146 selfloop transitions, 150 changer transitions 8/304 dead transitions. [2023-08-27 09:37:27,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 304 transitions, 6580 flow [2023-08-27 09:37:27,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 09:37:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 09:37:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1261 transitions. [2023-08-27 09:37:27,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.433780529755762 [2023-08-27 09:37:27,041 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1261 transitions. [2023-08-27 09:37:27,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1261 transitions. [2023-08-27 09:37:27,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:27,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1261 transitions. [2023-08-27 09:37:27,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 74.17647058823529) internal successors, (1261), 17 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:27,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 171.0) internal successors, (3078), 18 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:27,047 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 171.0) internal successors, (3078), 18 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:27,047 INFO L175 Difference]: Start difference. First operand has 157 places, 191 transitions, 3745 flow. Second operand 17 states and 1261 transitions. [2023-08-27 09:37:27,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 304 transitions, 6580 flow [2023-08-27 09:37:27,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 304 transitions, 6195 flow, removed 151 selfloop flow, removed 9 redundant places. [2023-08-27 09:37:27,285 INFO L231 Difference]: Finished difference. Result has 174 places, 235 transitions, 5010 flow [2023-08-27 09:37:27,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=3433, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5010, PETRI_PLACES=174, PETRI_TRANSITIONS=235} [2023-08-27 09:37:27,285 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 148 predicate places. [2023-08-27 09:37:27,286 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 235 transitions, 5010 flow [2023-08-27 09:37:27,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.71428571428571) internal successors, (962), 14 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:27,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:27,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:27,293 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 09:37:27,491 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 09:37:27,492 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 09:37:27,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash -317608657, now seen corresponding path program 6 times [2023-08-27 09:37:27,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:27,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401209919] [2023-08-27 09:37:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:27,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:27,618 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 09:37:27,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:27,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401209919] [2023-08-27 09:37:27,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401209919] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:37:27,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430118705] [2023-08-27 09:37:27,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 09:37:27,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:37:27,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:27,620 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 09:37:27,623 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 09:37:27,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 09:37:27,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:37:27,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 09:37:27,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:37:27,733 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 09:37:27,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:37:27,817 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 09:37:27,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430118705] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:37:27,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:37:27,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-27 09:37:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451229595] [2023-08-27 09:37:27,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:37:27,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 09:37:27,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 09:37:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 09:37:27,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:27,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 235 transitions, 5010 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 09:37:27,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:27,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:27,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:28,607 INFO L124 PetriNetUnfolderBase]: 1461/2506 cut-off events. [2023-08-27 09:37:28,608 INFO L125 PetriNetUnfolderBase]: For 79181/79181 co-relation queries the response was YES. [2023-08-27 09:37:28,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21597 conditions, 2506 events. 1461/2506 cut-off events. For 79181/79181 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13192 event pairs, 209 based on Foata normal form. 40/2546 useless extension candidates. Maximal degree in co-relation 21510. Up to 981 conditions per place. [2023-08-27 09:37:28,637 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 131 selfloop transitions, 153 changer transitions 29/313 dead transitions. [2023-08-27 09:37:28,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 313 transitions, 6756 flow [2023-08-27 09:37:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 09:37:28,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 09:37:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1325 transitions. [2023-08-27 09:37:28,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4078177900892582 [2023-08-27 09:37:28,640 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1325 transitions. [2023-08-27 09:37:28,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1325 transitions. [2023-08-27 09:37:28,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:28,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1325 transitions. [2023-08-27 09:37:28,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 69.73684210526316) internal successors, (1325), 19 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:28,646 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 09:37:28,646 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 09:37:28,646 INFO L175 Difference]: Start difference. First operand has 174 places, 235 transitions, 5010 flow. Second operand 19 states and 1325 transitions. [2023-08-27 09:37:28,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 313 transitions, 6756 flow [2023-08-27 09:37:28,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 313 transitions, 6591 flow, removed 54 selfloop flow, removed 4 redundant places. [2023-08-27 09:37:28,848 INFO L231 Difference]: Finished difference. Result has 195 places, 249 transitions, 5677 flow [2023-08-27 09:37:28,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=4853, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5677, PETRI_PLACES=195, PETRI_TRANSITIONS=249} [2023-08-27 09:37:28,848 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 169 predicate places. [2023-08-27 09:37:28,849 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 249 transitions, 5677 flow [2023-08-27 09:37:28,849 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 09:37:28,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:28,849 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:28,857 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 09:37:29,055 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 09:37:29,055 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 09:37:29,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1112456953, now seen corresponding path program 7 times [2023-08-27 09:37:29,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:29,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784137671] [2023-08-27 09:37:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:29,199 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 09:37:29,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:37:29,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784137671] [2023-08-27 09:37:29,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784137671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:37:29,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209065769] [2023-08-27 09:37:29,200 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 09:37:29,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:37:29,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:37:29,201 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 09:37:29,205 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 09:37:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:37:29,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 09:37:29,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:37:29,338 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 09:37:29,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:37:29,437 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 09:37:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209065769] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:37:29,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:37:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-08-27 09:37:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039047553] [2023-08-27 09:37:29,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:37:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 09:37:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:37:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 09:37:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-27 09:37:29,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 09:37:29,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 249 transitions, 5677 flow. Second operand has 18 states, 18 states have (on average 65.66666666666667) internal successors, (1182), 18 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:29,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:37:29,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 09:37:29,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:37:30,442 INFO L124 PetriNetUnfolderBase]: 1537/2658 cut-off events. [2023-08-27 09:37:30,442 INFO L125 PetriNetUnfolderBase]: For 92951/92951 co-relation queries the response was YES. [2023-08-27 09:37:30,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23448 conditions, 2658 events. 1537/2658 cut-off events. For 92951/92951 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14109 event pairs, 161 based on Foata normal form. 38/2696 useless extension candidates. Maximal degree in co-relation 23354. Up to 1057 conditions per place. [2023-08-27 09:37:30,468 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 162 selfloop transitions, 201 changer transitions 44/407 dead transitions. [2023-08-27 09:37:30,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 407 transitions, 9075 flow [2023-08-27 09:37:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 09:37:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 09:37:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2017 transitions. [2023-08-27 09:37:30,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067352288767897 [2023-08-27 09:37:30,472 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2017 transitions. [2023-08-27 09:37:30,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2017 transitions. [2023-08-27 09:37:30,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:37:30,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2017 transitions. [2023-08-27 09:37:30,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 69.55172413793103) internal successors, (2017), 29 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:30,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 171.0) internal successors, (5130), 30 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:30,482 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 171.0) internal successors, (5130), 30 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:30,482 INFO L175 Difference]: Start difference. First operand has 195 places, 249 transitions, 5677 flow. Second operand 29 states and 2017 transitions. [2023-08-27 09:37:30,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 407 transitions, 9075 flow [2023-08-27 09:37:30,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 407 transitions, 8721 flow, removed 116 selfloop flow, removed 12 redundant places. [2023-08-27 09:37:30,745 INFO L231 Difference]: Finished difference. Result has 219 places, 301 transitions, 7081 flow [2023-08-27 09:37:30,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=5443, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7081, PETRI_PLACES=219, PETRI_TRANSITIONS=301} [2023-08-27 09:37:30,746 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 193 predicate places. [2023-08-27 09:37:30,746 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 301 transitions, 7081 flow [2023-08-27 09:37:30,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.66666666666667) internal successors, (1182), 18 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:37:30,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:37:30,746 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:30,751 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 09:37:30,947 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 09:37:30,947 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 09:37:30,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:37:30,947 INFO L85 PathProgramCache]: Analyzing trace with hash 480637719, now seen corresponding path program 8 times [2023-08-27 09:37:30,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:37:30,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938242139] [2023-08-27 09:37:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:37:30,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:37:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:37:30,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 09:37:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:37:31,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 09:37:31,019 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 09:37:31,020 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (18 of 19 remaining) [2023-08-27 09:37:31,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 19 remaining) [2023-08-27 09:37:31,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 19 remaining) [2023-08-27 09:37:31,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 09:37:31,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 09:37:31,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 09:37:31,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 09:37:31,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 09:37:31,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-27 09:37:31,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-27 09:37:31,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-27 09:37:31,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 09:37:31,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 09:37:31,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 09:37:31,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 09:37:31,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 09:37:31,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 09:37:31,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 09:37:31,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 09:37:31,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 09:37:31,023 INFO L445 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:37:31,027 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:37:31,027 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:37:31,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:37:31 BasicIcfg [2023-08-27 09:37:31,083 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:37:31,084 INFO L158 Benchmark]: Toolchain (without parser) took 17433.19ms. Allocated memory was 408.9MB in the beginning and 765.5MB in the end (delta: 356.5MB). Free memory was 383.9MB in the beginning and 465.1MB in the end (delta: -81.2MB). Peak memory consumption was 275.8MB. Max. memory is 16.0GB. [2023-08-27 09:37:31,084 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 408.9MB. Free memory is still 385.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:37:31,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.96ms. Allocated memory is still 408.9MB. Free memory was 383.4MB in the beginning and 364.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 09:37:31,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.20ms. Allocated memory is still 408.9MB. Free memory was 364.0MB in the beginning and 362.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:37:31,084 INFO L158 Benchmark]: Boogie Preprocessor took 23.52ms. Allocated memory is still 408.9MB. Free memory was 362.4MB in the beginning and 360.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:37:31,085 INFO L158 Benchmark]: RCFGBuilder took 402.15ms. Allocated memory is still 408.9MB. Free memory was 360.8MB in the beginning and 346.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 09:37:31,085 INFO L158 Benchmark]: TraceAbstraction took 16495.97ms. Allocated memory was 408.9MB in the beginning and 765.5MB in the end (delta: 356.5MB). Free memory was 345.6MB in the beginning and 465.1MB in the end (delta: -119.5MB). Peak memory consumption was 238.1MB. Max. memory is 16.0GB. [2023-08-27 09:37:31,086 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 408.9MB. Free memory is still 385.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 460.96ms. Allocated memory is still 408.9MB. Free memory was 383.4MB in the beginning and 364.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.20ms. Allocated memory is still 408.9MB. Free memory was 364.0MB in the beginning and 362.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.52ms. Allocated memory is still 408.9MB. Free memory was 362.4MB in the beginning and 360.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 402.15ms. Allocated memory is still 408.9MB. Free memory was 360.8MB in the beginning and 346.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 16495.97ms. Allocated memory was 408.9MB in the beginning and 765.5MB in the end (delta: 356.5MB). Free memory was 345.6MB in the beginning and 465.1MB in the end (delta: -119.5MB). Peak memory consumption was 238.1MB. 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 - CounterExampleResult [Line: 693]: assertion can be violated assertion can be violated We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 5 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 5 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 5 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 5 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 5 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 5 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 5 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 5 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 5 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 5 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L719] 0 int condJ = j >= (2*5 +6); [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) [L693] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 696]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - 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: 16.3s, OverallIterations: 26, TraceHistogramMax: 5, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1564 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1564 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2380 IncrementalHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 0 mSDtfsCounter, 2380 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7081occurred in iteration=25, InterpolantAutomatonStates: 208, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 345 ConstructedInterpolants, 0 QuantifiedInterpolants, 1257 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1206 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 41 InterpolantComputations, 18 PerfectInterpolantSequences, 3/80 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-27 09:37:31,107 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...