/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/triangular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:56:51,413 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:56:51,500 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 02:56:51,503 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:56:51,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:56:51,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:56:51,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:56:51,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:56:51,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:56:51,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:56:51,541 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:56:51,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:56:51,542 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:56:51,543 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:56:51,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:56:51,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:56:51,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:56:51,544 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:56:51,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:56:51,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:56:51,544 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:56:51,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:56:51,545 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:56:51,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:56:51,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:56:51,546 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:56:51,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:56:51,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:56:51,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:56:51,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:56:51,548 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:56:51,548 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:56:51,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:56:51,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:56:51,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:56:51,549 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:56:51,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:56:51,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:56:51,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:56:51,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:56:51,854 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:56:51,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-2.i [2023-08-27 02:56:52,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:56:53,180 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:56:53,183 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i [2023-08-27 02:56:53,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d75b1b29a/703fc9743cc14be2b35364e52a02648d/FLAG3eb620b1d [2023-08-27 02:56:53,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d75b1b29a/703fc9743cc14be2b35364e52a02648d [2023-08-27 02:56:53,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:56:53,216 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:56:53,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:56:53,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:56:53,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:56:53,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d91803e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53, skipping insertion in model container [2023-08-27 02:56:53,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,259 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:56:53,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:56:53,587 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:56:53,615 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 02:56:53,617 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-27 02:56:53,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:56:53,672 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:56:53,672 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 02:56:53,678 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:56:53,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53 WrapperNode [2023-08-27 02:56:53,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:56:53,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:56:53,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:56:53,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:56:53,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,733 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 50 [2023-08-27 02:56:53,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:56:53,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:56:53,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:56:53,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:56:53,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,749 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:56:53,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:56:53,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:56:53,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:56:53,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (1/1) ... [2023-08-27 02:56:53,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:56:53,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:56:53,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 02:56:53,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 02:56:53,847 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 02:56:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 02:56:53,847 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 02:56:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 02:56:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:56:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 02:56:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:56:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:56:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:56:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:56:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 02:56:53,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:56:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:56:53,850 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 02:56:53,996 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:56:53,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:56:54,194 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:56:54,216 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:56:54,216 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 02:56:54,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:56:54 BoogieIcfgContainer [2023-08-27 02:56:54,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:56:54,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:56:54,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:56:54,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:56:54,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:56:53" (1/3) ... [2023-08-27 02:56:54,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43718e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:56:54, skipping insertion in model container [2023-08-27 02:56:54,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:53" (2/3) ... [2023-08-27 02:56:54,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43718e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:56:54, skipping insertion in model container [2023-08-27 02:56:54,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:56:54" (3/3) ... [2023-08-27 02:56:54,227 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2023-08-27 02:56:54,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:56:54,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 02:56:54,242 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:56:54,310 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 02:56:54,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 178 flow [2023-08-27 02:56:54,375 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-08-27 02:56:54,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:56:54,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 82 events. 6/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 157 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-27 02:56:54,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 84 transitions, 178 flow [2023-08-27 02:56:54,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 82 transitions, 170 flow [2023-08-27 02:56:54,393 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:56:54,405 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 82 transitions, 170 flow [2023-08-27 02:56:54,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 82 transitions, 170 flow [2023-08-27 02:56:54,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 170 flow [2023-08-27 02:56:54,460 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-08-27 02:56:54,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:56:54,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 82 events. 6/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-27 02:56:54,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 2304 [2023-08-27 02:56:56,922 INFO L134 LiptonReduction]: Checked pairs total: 2595 [2023-08-27 02:56:56,923 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-27 02:56:56,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:56:56,940 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;@7dc4e3a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:56:56,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 02:56:56,943 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:56:56,943 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-27 02:56:56,943 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:56:56,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:56,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:56:56,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:56,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:56,949 INFO L85 PathProgramCache]: Analyzing trace with hash 10934624, now seen corresponding path program 1 times [2023-08-27 02:56:56,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:56,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009826854] [2023-08-27 02:56:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:56,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:57,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:57,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009826854] [2023-08-27 02:56:57,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009826854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:57,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:57,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:56:57,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694588896] [2023-08-27 02:56:57,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:57,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:57,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:57,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:57,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:56:57,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:57,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:56:57,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:57,321 INFO L124 PetriNetUnfolderBase]: 415/650 cut-off events. [2023-08-27 02:56:57,322 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 02:56:57,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 650 events. 415/650 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2587 event pairs, 159 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 1306. Up to 351 conditions per place. [2023-08-27 02:56:57,331 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 28 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-08-27 02:56:57,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 134 flow [2023-08-27 02:56:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-08-27 02:56:57,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2023-08-27 02:56:57,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-08-27 02:56:57,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-08-27 02:56:57,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:57,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-08-27 02:56:57,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,364 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 3 states and 249 transitions. [2023-08-27 02:56:57,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 134 flow [2023-08-27 02:56:57,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:56:57,368 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 72 flow [2023-08-27 02:56:57,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-08-27 02:56:57,375 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-08-27 02:56:57,375 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 72 flow [2023-08-27 02:56:57,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:57,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:56:57,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:56:57,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:57,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash 10934666, now seen corresponding path program 1 times [2023-08-27 02:56:57,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:57,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233239641] [2023-08-27 02:56:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:57,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:57,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:57,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233239641] [2023-08-27 02:56:57,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233239641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:57,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:57,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:56:57,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534332492] [2023-08-27 02:56:57,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:57,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:57,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:57,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:57,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:57,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:56:57,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:57,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:56:57,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:57,626 INFO L124 PetriNetUnfolderBase]: 601/944 cut-off events. [2023-08-27 02:56:57,626 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-27 02:56:57,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 944 events. 601/944 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4286 event pairs, 309 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 2246. Up to 651 conditions per place. [2023-08-27 02:56:57,632 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 37 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-27 02:56:57,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 39 transitions, 206 flow [2023-08-27 02:56:57,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-27 02:56:57,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4600389863547758 [2023-08-27 02:56:57,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-27 02:56:57,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-27 02:56:57,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:57,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-27 02:56:57,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,638 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 72 flow. Second operand 3 states and 236 transitions. [2023-08-27 02:56:57,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 39 transitions, 206 flow [2023-08-27 02:56:57,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 39 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:56:57,642 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 78 flow [2023-08-27 02:56:57,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-27 02:56:57,642 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-27 02:56:57,643 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 78 flow [2023-08-27 02:56:57,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:57,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:56:57,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:56:57,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:57,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash 10934625, now seen corresponding path program 1 times [2023-08-27 02:56:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:57,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122073554] [2023-08-27 02:56:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:57,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:57,672 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 02:56:57,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:57,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122073554] [2023-08-27 02:56:57,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122073554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:57,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:57,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:56:57,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573136160] [2023-08-27 02:56:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:57,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:57,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:57,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:57,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:56:57,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:57,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:56:57,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:57,770 INFO L124 PetriNetUnfolderBase]: 581/952 cut-off events. [2023-08-27 02:56:57,770 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-27 02:56:57,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 952 events. 581/952 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4441 event pairs, 198 based on Foata normal form. 44/566 useless extension candidates. Maximal degree in co-relation 2386. Up to 582 conditions per place. [2023-08-27 02:56:57,776 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 31 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-08-27 02:56:57,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 37 transitions, 198 flow [2023-08-27 02:56:57,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-08-27 02:56:57,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47173489278752434 [2023-08-27 02:56:57,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-08-27 02:56:57,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-08-27 02:56:57,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:57,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-08-27 02:56:57,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,781 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 78 flow. Second operand 3 states and 242 transitions. [2023-08-27 02:56:57,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 37 transitions, 198 flow [2023-08-27 02:56:57,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 37 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:56:57,782 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 114 flow [2023-08-27 02:56:57,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2023-08-27 02:56:57,783 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-27 02:56:57,783 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 114 flow [2023-08-27 02:56:57,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:57,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 02:56:57,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:56:57,784 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:57,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:57,785 INFO L85 PathProgramCache]: Analyzing trace with hash 338975209, now seen corresponding path program 1 times [2023-08-27 02:56:57,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:57,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296568826] [2023-08-27 02:56:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:57,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:57,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:57,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296568826] [2023-08-27 02:56:57,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296568826] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:56:57,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003155190] [2023-08-27 02:56:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:57,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:56:57,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:56:57,829 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:56:57,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 02:56:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:57,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:56:57,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:56:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:57,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:56:57,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003155190] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:57,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:56:57,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:56:57,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480642089] [2023-08-27 02:56:57,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:57,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:56:57,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:57,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:56:57,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:56:57,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:56:57,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:57,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:57,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:56:57,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:58,118 INFO L124 PetriNetUnfolderBase]: 505/834 cut-off events. [2023-08-27 02:56:58,118 INFO L125 PetriNetUnfolderBase]: For 233/233 co-relation queries the response was YES. [2023-08-27 02:56:58,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 834 events. 505/834 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3981 event pairs, 95 based on Foata normal form. 0/520 useless extension candidates. Maximal degree in co-relation 2264. Up to 340 conditions per place. [2023-08-27 02:56:58,124 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-27 02:56:58,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 57 transitions, 353 flow [2023-08-27 02:56:58,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:56:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:56:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-08-27 02:56:58,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2023-08-27 02:56:58,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-08-27 02:56:58,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-08-27 02:56:58,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:58,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-08-27 02:56:58,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,130 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,130 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 114 flow. Second operand 4 states and 312 transitions. [2023-08-27 02:56:58,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 57 transitions, 353 flow [2023-08-27 02:56:58,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 57 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:56:58,135 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 110 flow [2023-08-27 02:56:58,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-27 02:56:58,137 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-08-27 02:56:58,137 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 110 flow [2023-08-27 02:56:58,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:58,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:56:58,145 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 02:56:58,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:56:58,343 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:58,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1919052570, now seen corresponding path program 1 times [2023-08-27 02:56:58,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:58,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489353138] [2023-08-27 02:56:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:58,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:58,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489353138] [2023-08-27 02:56:58,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489353138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:58,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:58,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:56:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270948839] [2023-08-27 02:56:58,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:58,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:56:58,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:58,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:56:58,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:56:58,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:56:58,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:58,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:56:58,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:58,651 INFO L124 PetriNetUnfolderBase]: 521/920 cut-off events. [2023-08-27 02:56:58,651 INFO L125 PetriNetUnfolderBase]: For 675/675 co-relation queries the response was YES. [2023-08-27 02:56:58,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 920 events. 521/920 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4801 event pairs, 175 based on Foata normal form. 12/640 useless extension candidates. Maximal degree in co-relation 2617. Up to 665 conditions per place. [2023-08-27 02:56:58,657 INFO L140 encePairwiseOnDemand]: 161/171 looper letters, 44 selfloop transitions, 19 changer transitions 1/64 dead transitions. [2023-08-27 02:56:58,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 64 transitions, 410 flow [2023-08-27 02:56:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:56:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:56:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2023-08-27 02:56:58,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2023-08-27 02:56:58,659 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2023-08-27 02:56:58,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2023-08-27 02:56:58,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:58,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2023-08-27 02:56:58,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,662 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,662 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 110 flow. Second operand 5 states and 375 transitions. [2023-08-27 02:56:58,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 64 transitions, 410 flow [2023-08-27 02:56:58,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 64 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:56:58,665 INFO L231 Difference]: Finished difference. Result has 36 places, 43 transitions, 314 flow [2023-08-27 02:56:58,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=36, PETRI_TRANSITIONS=43} [2023-08-27 02:56:58,667 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-27 02:56:58,668 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 43 transitions, 314 flow [2023-08-27 02:56:58,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 4 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:58,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:56:58,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:56:58,669 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:58,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1919051912, now seen corresponding path program 1 times [2023-08-27 02:56:58,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:58,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549483188] [2023-08-27 02:56:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:58,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:58,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:58,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549483188] [2023-08-27 02:56:58,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549483188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:58,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:58,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:56:58,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158314838] [2023-08-27 02:56:58,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:58,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:58,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:58,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:58,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:58,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:56:58,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:58,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:56:58,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:58,803 INFO L124 PetriNetUnfolderBase]: 496/883 cut-off events. [2023-08-27 02:56:58,803 INFO L125 PetriNetUnfolderBase]: For 1257/1257 co-relation queries the response was YES. [2023-08-27 02:56:58,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3436 conditions, 883 events. 496/883 cut-off events. For 1257/1257 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4624 event pairs, 216 based on Foata normal form. 36/843 useless extension candidates. Maximal degree in co-relation 3417. Up to 498 conditions per place. [2023-08-27 02:56:58,809 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-27 02:56:58,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 68 transitions, 619 flow [2023-08-27 02:56:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-27 02:56:58,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-08-27 02:56:58,811 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-27 02:56:58,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-27 02:56:58,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:58,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-27 02:56:58,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,814 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 314 flow. Second operand 3 states and 243 transitions. [2023-08-27 02:56:58,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 68 transitions, 619 flow [2023-08-27 02:56:58,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 68 transitions, 619 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:56:58,820 INFO L231 Difference]: Finished difference. Result has 40 places, 45 transitions, 358 flow [2023-08-27 02:56:58,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=40, PETRI_TRANSITIONS=45} [2023-08-27 02:56:58,822 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-08-27 02:56:58,822 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 45 transitions, 358 flow [2023-08-27 02:56:58,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:58,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:56:58,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:56:58,823 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:58,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1919051955, now seen corresponding path program 1 times [2023-08-27 02:56:58,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:58,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352906679] [2023-08-27 02:56:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:58,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:58,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:58,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352906679] [2023-08-27 02:56:58,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352906679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:58,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:58,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:56:58,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429354644] [2023-08-27 02:56:58,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:58,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:58,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:58,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:58,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:58,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:56:58,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:58,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:56:58,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:58,957 INFO L124 PetriNetUnfolderBase]: 452/823 cut-off events. [2023-08-27 02:56:58,957 INFO L125 PetriNetUnfolderBase]: For 1806/1806 co-relation queries the response was YES. [2023-08-27 02:56:58,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 823 events. 452/823 cut-off events. For 1806/1806 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4433 event pairs, 220 based on Foata normal form. 16/779 useless extension candidates. Maximal degree in co-relation 3464. Up to 700 conditions per place. [2023-08-27 02:56:58,963 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 51 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-08-27 02:56:58,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 543 flow [2023-08-27 02:56:58,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-27 02:56:58,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44834307992202727 [2023-08-27 02:56:58,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-27 02:56:58,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-27 02:56:58,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:58,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-27 02:56:58,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,972 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 358 flow. Second operand 3 states and 230 transitions. [2023-08-27 02:56:58,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 543 flow [2023-08-27 02:56:58,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:56:58,978 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 325 flow [2023-08-27 02:56:58,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=325, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-08-27 02:56:58,979 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-08-27 02:56:58,979 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 325 flow [2023-08-27 02:56:58,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:58,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:58,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:58,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 02:56:58,980 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:58,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:58,980 INFO L85 PathProgramCache]: Analyzing trace with hash -638931166, now seen corresponding path program 1 times [2023-08-27 02:56:58,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:58,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894390459] [2023-08-27 02:56:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:58,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:59,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894390459] [2023-08-27 02:56:59,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894390459] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:56:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159513249] [2023-08-27 02:56:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:59,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:56:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:56:59,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:56:59,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 02:56:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:59,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:56:59,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:56:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:59,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:56:59,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159513249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:59,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:56:59,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:56:59,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789848892] [2023-08-27 02:56:59,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:59,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:56:59,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:56:59,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:56:59,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:56:59,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:59,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:56:59,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:59,242 INFO L124 PetriNetUnfolderBase]: 378/689 cut-off events. [2023-08-27 02:56:59,242 INFO L125 PetriNetUnfolderBase]: For 1453/1453 co-relation queries the response was YES. [2023-08-27 02:56:59,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2903 conditions, 689 events. 378/689 cut-off events. For 1453/1453 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3524 event pairs, 92 based on Foata normal form. 0/689 useless extension candidates. Maximal degree in co-relation 2880. Up to 385 conditions per place. [2023-08-27 02:56:59,248 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 53 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-08-27 02:56:59,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 550 flow [2023-08-27 02:56:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:56:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:56:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2023-08-27 02:56:59,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2023-08-27 02:56:59,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 303 transitions. [2023-08-27 02:56:59,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 303 transitions. [2023-08-27 02:56:59,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:59,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 303 transitions. [2023-08-27 02:56:59,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,253 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 325 flow. Second operand 4 states and 303 transitions. [2023-08-27 02:56:59,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 550 flow [2023-08-27 02:56:59,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:56:59,257 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 278 flow [2023-08-27 02:56:59,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-27 02:56:59,260 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2023-08-27 02:56:59,260 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 278 flow [2023-08-27 02:56:59,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:59,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:59,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 02:56:59,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-27 02:56:59,469 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:59,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:59,469 INFO L85 PathProgramCache]: Analyzing trace with hash -638931208, now seen corresponding path program 1 times [2023-08-27 02:56:59,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:59,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457928768] [2023-08-27 02:56:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:59,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:56:59,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:59,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457928768] [2023-08-27 02:56:59,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457928768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:59,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:59,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:56:59,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037145063] [2023-08-27 02:56:59,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:59,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:59,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:59,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:59,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:59,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 171 [2023-08-27 02:56:59,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:59,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 171 [2023-08-27 02:56:59,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:59,586 INFO L124 PetriNetUnfolderBase]: 358/667 cut-off events. [2023-08-27 02:56:59,586 INFO L125 PetriNetUnfolderBase]: For 1658/1658 co-relation queries the response was YES. [2023-08-27 02:56:59,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2851 conditions, 667 events. 358/667 cut-off events. For 1658/1658 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3391 event pairs, 179 based on Foata normal form. 30/697 useless extension candidates. Maximal degree in co-relation 2828. Up to 422 conditions per place. [2023-08-27 02:56:59,591 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 44 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-08-27 02:56:59,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 493 flow [2023-08-27 02:56:59,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:59,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-27 02:56:59,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2023-08-27 02:56:59,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-27 02:56:59,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-27 02:56:59,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:59,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-27 02:56:59,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,595 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 278 flow. Second operand 3 states and 240 transitions. [2023-08-27 02:56:59,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 493 flow [2023-08-27 02:56:59,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 473 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 02:56:59,599 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 290 flow [2023-08-27 02:56:59,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-27 02:56:59,600 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2023-08-27 02:56:59,600 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 290 flow [2023-08-27 02:56:59,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:59,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:59,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:56:59,601 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:59,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash 928422854, now seen corresponding path program 1 times [2023-08-27 02:56:59,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:59,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080413653] [2023-08-27 02:56:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:59,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:59,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:59,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080413653] [2023-08-27 02:56:59,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080413653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:59,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:59,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:56:59,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122840125] [2023-08-27 02:56:59,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:59,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:56:59,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:59,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:56:59,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:56:59,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:56:59,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:59,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:56:59,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:59,746 INFO L124 PetriNetUnfolderBase]: 436/785 cut-off events. [2023-08-27 02:56:59,747 INFO L125 PetriNetUnfolderBase]: For 2135/2135 co-relation queries the response was YES. [2023-08-27 02:56:59,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 785 events. 436/785 cut-off events. For 2135/2135 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3974 event pairs, 95 based on Foata normal form. 40/825 useless extension candidates. Maximal degree in co-relation 3301. Up to 297 conditions per place. [2023-08-27 02:56:59,753 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 50 selfloop transitions, 19 changer transitions 0/69 dead transitions. [2023-08-27 02:56:59,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 677 flow [2023-08-27 02:56:59,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:56:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:56:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 380 transitions. [2023-08-27 02:56:59,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-27 02:56:59,755 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 380 transitions. [2023-08-27 02:56:59,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 380 transitions. [2023-08-27 02:56:59,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:59,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 380 transitions. [2023-08-27 02:56:59,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,758 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,758 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 290 flow. Second operand 5 states and 380 transitions. [2023-08-27 02:56:59,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 677 flow [2023-08-27 02:56:59,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 69 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:56:59,763 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 466 flow [2023-08-27 02:56:59,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=466, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-27 02:56:59,764 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2023-08-27 02:56:59,764 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 466 flow [2023-08-27 02:56:59,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:59,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:59,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:56:59,765 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:59,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:59,765 INFO L85 PathProgramCache]: Analyzing trace with hash 930812023, now seen corresponding path program 1 times [2023-08-27 02:56:59,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:59,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764921089] [2023-08-27 02:56:59,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:59,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:59,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:59,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764921089] [2023-08-27 02:56:59,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764921089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:59,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:59,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:56:59,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329507299] [2023-08-27 02:56:59,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:59,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:56:59,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:56:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:56:59,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:56:59,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:59,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:56:59,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:59,932 INFO L124 PetriNetUnfolderBase]: 446/823 cut-off events. [2023-08-27 02:56:59,933 INFO L125 PetriNetUnfolderBase]: For 3657/3657 co-relation queries the response was YES. [2023-08-27 02:56:59,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 823 events. 446/823 cut-off events. For 3657/3657 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4389 event pairs, 185 based on Foata normal form. 80/903 useless extension candidates. Maximal degree in co-relation 3796. Up to 348 conditions per place. [2023-08-27 02:56:59,939 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 60 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2023-08-27 02:56:59,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 773 flow [2023-08-27 02:56:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:56:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:56:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-27 02:56:59,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44678362573099417 [2023-08-27 02:56:59,941 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-27 02:56:59,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-27 02:56:59,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:59,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-27 02:56:59,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,943 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,944 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 466 flow. Second operand 5 states and 382 transitions. [2023-08-27 02:56:59,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 773 flow [2023-08-27 02:56:59,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 730 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 02:56:59,950 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 502 flow [2023-08-27 02:56:59,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-27 02:56:59,951 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2023-08-27 02:56:59,951 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 502 flow [2023-08-27 02:56:59,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:59,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:59,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:59,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:56:59,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:56:59,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:59,952 INFO L85 PathProgramCache]: Analyzing trace with hash 928477451, now seen corresponding path program 1 times [2023-08-27 02:56:59,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:59,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969401400] [2023-08-27 02:56:59,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:59,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:00,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969401400] [2023-08-27 02:57:00,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969401400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:00,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:00,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:57:00,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128586487] [2023-08-27 02:57:00,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:00,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:57:00,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:00,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:57:00,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:00,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:00,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 502 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:00,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:00,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:00,159 INFO L124 PetriNetUnfolderBase]: 432/821 cut-off events. [2023-08-27 02:57:00,159 INFO L125 PetriNetUnfolderBase]: For 3618/3618 co-relation queries the response was YES. [2023-08-27 02:57:00,161 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 02:57:00,166 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 49 selfloop transitions, 21 changer transitions 0/70 dead transitions. [2023-08-27 02:57:00,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 807 flow [2023-08-27 02:57:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:57:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:57:00,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 426 transitions. [2023-08-27 02:57:00,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152046783625731 [2023-08-27 02:57:00,168 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 426 transitions. [2023-08-27 02:57:00,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 426 transitions. [2023-08-27 02:57:00,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:00,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 426 transitions. [2023-08-27 02:57:00,169 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 02:57:00,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,171 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,171 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 502 flow. Second operand 6 states and 426 transitions. [2023-08-27 02:57:00,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 807 flow [2023-08-27 02:57:00,177 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 02:57:00,179 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 638 flow [2023-08-27 02:57:00,179 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 02:57:00,179 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2023-08-27 02:57:00,179 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 638 flow [2023-08-27 02:57:00,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:00,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:00,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:57:00,180 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:00,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:00,181 INFO L85 PathProgramCache]: Analyzing trace with hash 928422548, now seen corresponding path program 1 times [2023-08-27 02:57:00,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:00,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659868202] [2023-08-27 02:57:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:00,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:00,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659868202] [2023-08-27 02:57:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659868202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:00,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:00,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:00,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570772793] [2023-08-27 02:57:00,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:00,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:00,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:00,210 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 02:57:00,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:00,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:00,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:00,288 INFO L124 PetriNetUnfolderBase]: 335/597 cut-off events. [2023-08-27 02:57:00,288 INFO L125 PetriNetUnfolderBase]: For 3591/3591 co-relation queries the response was YES. [2023-08-27 02:57:00,290 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 02:57:00,293 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-27 02:57:00,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 38 transitions, 489 flow [2023-08-27 02:57:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:57:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:57:00,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-08-27 02:57:00,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249512670565302 [2023-08-27 02:57:00,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-08-27 02:57:00,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-08-27 02:57:00,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:00,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-08-27 02:57:00,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,297 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 638 flow. Second operand 3 states and 218 transitions. [2023-08-27 02:57:00,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 38 transitions, 489 flow [2023-08-27 02:57:00,302 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 02:57:00,302 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 374 flow [2023-08-27 02:57:00,303 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 02:57:00,303 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2023-08-27 02:57:00,303 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 374 flow [2023-08-27 02:57:00,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:00,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:00,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:57:00,304 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:00,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:00,304 INFO L85 PathProgramCache]: Analyzing trace with hash 928422549, now seen corresponding path program 1 times [2023-08-27 02:57:00,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:00,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641503862] [2023-08-27 02:57:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:00,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:00,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641503862] [2023-08-27 02:57:00,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641503862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:00,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:00,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:57:00,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725849328] [2023-08-27 02:57:00,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:00,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:57:00,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:00,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:57:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:57:00,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:00,345 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 02:57:00,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:00,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:00,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:00,449 INFO L124 PetriNetUnfolderBase]: 369/651 cut-off events. [2023-08-27 02:57:00,449 INFO L125 PetriNetUnfolderBase]: For 2563/2563 co-relation queries the response was YES. [2023-08-27 02:57:00,451 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 02:57:00,455 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 51 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-08-27 02:57:00,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 622 flow [2023-08-27 02:57:00,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:57:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:57:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2023-08-27 02:57:00,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43742690058479533 [2023-08-27 02:57:00,457 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2023-08-27 02:57:00,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2023-08-27 02:57:00,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:00,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2023-08-27 02:57:00,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,460 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,460 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 374 flow. Second operand 5 states and 374 transitions. [2023-08-27 02:57:00,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 622 flow [2023-08-27 02:57:00,464 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 02:57:00,465 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 411 flow [2023-08-27 02:57:00,466 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 02:57:00,466 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2023-08-27 02:57:00,466 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 411 flow [2023-08-27 02:57:00,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:00,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:00,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 02:57:00,467 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:00,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:00,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1667943794, now seen corresponding path program 1 times [2023-08-27 02:57:00,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:00,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185805453] [2023-08-27 02:57:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:00,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:00,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185805453] [2023-08-27 02:57:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185805453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:00,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:00,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:57:00,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226908218] [2023-08-27 02:57:00,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:00,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:57:00,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:00,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:57:00,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:00,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:00,596 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 02:57:00,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:00,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:00,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:00,719 INFO L124 PetriNetUnfolderBase]: 401/707 cut-off events. [2023-08-27 02:57:00,719 INFO L125 PetriNetUnfolderBase]: For 3004/3004 co-relation queries the response was YES. [2023-08-27 02:57:00,721 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 02:57:00,725 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 55 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2023-08-27 02:57:00,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 844 flow [2023-08-27 02:57:00,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:57:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:57:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2023-08-27 02:57:00,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171539961013645 [2023-08-27 02:57:00,727 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2023-08-27 02:57:00,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2023-08-27 02:57:00,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:00,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2023-08-27 02:57:00,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,730 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,730 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 411 flow. Second operand 6 states and 428 transitions. [2023-08-27 02:57:00,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 844 flow [2023-08-27 02:57:00,735 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 02:57:00,736 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 622 flow [2023-08-27 02:57:00,736 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 02:57:00,737 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2023-08-27 02:57:00,737 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 622 flow [2023-08-27 02:57:00,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:00,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:00,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 02:57:00,738 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:00,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1667969834, now seen corresponding path program 2 times [2023-08-27 02:57:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:00,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645685560] [2023-08-27 02:57:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:00,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:00,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:00,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645685560] [2023-08-27 02:57:00,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645685560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:00,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:00,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:57:00,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456276172] [2023-08-27 02:57:00,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:00,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:57:00,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:00,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:57:00,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:57:00,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:00,807 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 02:57:00,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:00,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:00,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:00,940 INFO L124 PetriNetUnfolderBase]: 371/649 cut-off events. [2023-08-27 02:57:00,941 INFO L125 PetriNetUnfolderBase]: For 4107/4107 co-relation queries the response was YES. [2023-08-27 02:57:00,942 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 02:57:00,946 INFO L140 encePairwiseOnDemand]: 164/171 looper letters, 51 selfloop transitions, 20 changer transitions 4/75 dead transitions. [2023-08-27 02:57:00,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 936 flow [2023-08-27 02:57:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:57:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:57:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 496 transitions. [2023-08-27 02:57:00,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143692564745196 [2023-08-27 02:57:00,949 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 496 transitions. [2023-08-27 02:57:00,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 496 transitions. [2023-08-27 02:57:00,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:00,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 496 transitions. [2023-08-27 02:57:00,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,953 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,953 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 622 flow. Second operand 7 states and 496 transitions. [2023-08-27 02:57:00,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 936 flow [2023-08-27 02:57:00,964 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 02:57:00,965 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 745 flow [2023-08-27 02:57:00,966 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 02:57:00,966 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-08-27 02:57:00,967 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 745 flow [2023-08-27 02:57:00,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:00,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:00,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:00,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 02:57:00,967 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:00,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:00,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1283660960, now seen corresponding path program 1 times [2023-08-27 02:57:00,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:00,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966367781] [2023-08-27 02:57:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:00,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:01,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:01,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966367781] [2023-08-27 02:57:01,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966367781] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:01,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114229622] [2023-08-27 02:57:01,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:01,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:01,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:01,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:01,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 02:57:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:01,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:57:01,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:01,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:01,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114229622] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:01,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:01,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 02:57:01,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461642011] [2023-08-27 02:57:01,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:01,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 02:57:01,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:01,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 02:57:01,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:57:01,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:01,122 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 02:57:01,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:01,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:01,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:01,297 INFO L124 PetriNetUnfolderBase]: 527/887 cut-off events. [2023-08-27 02:57:01,298 INFO L125 PetriNetUnfolderBase]: For 7524/7524 co-relation queries the response was YES. [2023-08-27 02:57:01,300 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 02:57:01,304 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 72 selfloop transitions, 35 changer transitions 1/108 dead transitions. [2023-08-27 02:57:01,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 108 transitions, 1445 flow [2023-08-27 02:57:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:57:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:57:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 669 transitions. [2023-08-27 02:57:01,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346978557504873 [2023-08-27 02:57:01,307 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 669 transitions. [2023-08-27 02:57:01,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 669 transitions. [2023-08-27 02:57:01,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:01,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 669 transitions. [2023-08-27 02:57:01,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.33333333333333) internal successors, (669), 9 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:01,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:01,311 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:01,311 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 745 flow. Second operand 9 states and 669 transitions. [2023-08-27 02:57:01,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 108 transitions, 1445 flow [2023-08-27 02:57:01,322 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 02:57:01,323 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 1035 flow [2023-08-27 02:57:01,323 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 02:57:01,324 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 59 predicate places. [2023-08-27 02:57:01,324 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 1035 flow [2023-08-27 02:57:01,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.25) internal successors, (554), 8 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:01,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:01,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:01,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 02:57:01,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:01,530 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:01,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:01,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1157182881, now seen corresponding path program 1 times [2023-08-27 02:57:01,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:01,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66873413] [2023-08-27 02:57:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:01,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:01,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:01,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66873413] [2023-08-27 02:57:01,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66873413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:01,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:01,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:57:01,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746601018] [2023-08-27 02:57:01,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:01,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:57:01,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:01,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:57:01,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:57:01,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:01,624 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 02:57:01,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:01,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:01,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:01,818 INFO L124 PetriNetUnfolderBase]: 567/959 cut-off events. [2023-08-27 02:57:01,818 INFO L125 PetriNetUnfolderBase]: For 10718/10718 co-relation queries the response was YES. [2023-08-27 02:57:01,821 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 02:57:01,825 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 79 selfloop transitions, 29 changer transitions 1/109 dead transitions. [2023-08-27 02:57:01,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 109 transitions, 1634 flow [2023-08-27 02:57:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:57:01,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:57:01,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 563 transitions. [2023-08-27 02:57:01,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41154970760233917 [2023-08-27 02:57:01,827 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 563 transitions. [2023-08-27 02:57:01,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 563 transitions. [2023-08-27 02:57:01,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:01,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 563 transitions. [2023-08-27 02:57:01,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:01,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:01,831 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:01,831 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 1035 flow. Second operand 8 states and 563 transitions. [2023-08-27 02:57:01,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 109 transitions, 1634 flow [2023-08-27 02:57:01,852 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 02:57:01,853 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 1245 flow [2023-08-27 02:57:01,854 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 02:57:01,854 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 68 predicate places. [2023-08-27 02:57:01,854 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 1245 flow [2023-08-27 02:57:01,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:01,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:01,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:01,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 02:57:01,855 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:01,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:01,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1157208921, now seen corresponding path program 2 times [2023-08-27 02:57:01,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:01,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617855121] [2023-08-27 02:57:01,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:01,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:01,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:01,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617855121] [2023-08-27 02:57:01,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617855121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:57:01,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:57:01,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:57:01,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656067567] [2023-08-27 02:57:01,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:57:01,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:57:01,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:01,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:57:01,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:57:01,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:01,986 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 02:57:01,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:01,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:01,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:02,195 INFO L124 PetriNetUnfolderBase]: 543/919 cut-off events. [2023-08-27 02:57:02,195 INFO L125 PetriNetUnfolderBase]: For 11944/11944 co-relation queries the response was YES. [2023-08-27 02:57:02,198 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 02:57:02,202 INFO L140 encePairwiseOnDemand]: 166/171 looper letters, 67 selfloop transitions, 33 changer transitions 8/108 dead transitions. [2023-08-27 02:57:02,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 1686 flow [2023-08-27 02:57:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:57:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:57:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 561 transitions. [2023-08-27 02:57:02,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4100877192982456 [2023-08-27 02:57:02,204 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 561 transitions. [2023-08-27 02:57:02,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 561 transitions. [2023-08-27 02:57:02,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:02,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 561 transitions. [2023-08-27 02:57:02,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:02,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:02,208 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 171.0) internal successors, (1539), 9 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:02,209 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 1245 flow. Second operand 8 states and 561 transitions. [2023-08-27 02:57:02,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 1686 flow [2023-08-27 02:57:02,233 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 02:57:02,237 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 1326 flow [2023-08-27 02:57:02,237 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 02:57:02,238 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 75 predicate places. [2023-08-27 02:57:02,238 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 1326 flow [2023-08-27 02:57:02,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.66666666666667) internal successors, (394), 6 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:02,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:02,238 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:02,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 02:57:02,239 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:02,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash -977605308, now seen corresponding path program 3 times [2023-08-27 02:57:02,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:02,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032207865] [2023-08-27 02:57:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:02,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:02,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:02,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032207865] [2023-08-27 02:57:02,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032207865] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:02,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238025038] [2023-08-27 02:57:02,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:57:02,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:02,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:02,356 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:02,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 02:57:02,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 02:57:02,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:02,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 02:57:02,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:02,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:02,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:02,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238025038] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:02,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:02,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 02:57:02,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379484486] [2023-08-27 02:57:02,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:02,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 02:57:02,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:02,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 02:57:02,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-27 02:57:02,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:02,565 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 02:57:02,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:02,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:02,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:02,915 INFO L124 PetriNetUnfolderBase]: 659/1127 cut-off events. [2023-08-27 02:57:02,916 INFO L125 PetriNetUnfolderBase]: For 17674/17674 co-relation queries the response was YES. [2023-08-27 02:57:02,919 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 02:57:02,924 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 88 selfloop transitions, 50 changer transitions 16/154 dead transitions. [2023-08-27 02:57:02,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 154 transitions, 2337 flow [2023-08-27 02:57:02,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 02:57:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 02:57:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 919 transitions. [2023-08-27 02:57:02,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41340530814215026 [2023-08-27 02:57:02,927 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 919 transitions. [2023-08-27 02:57:02,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 919 transitions. [2023-08-27 02:57:02,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:02,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 919 transitions. [2023-08-27 02:57:02,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.6923076923077) internal successors, (919), 13 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:02,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:02,933 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 171.0) internal successors, (2394), 14 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:02,933 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 1326 flow. Second operand 13 states and 919 transitions. [2023-08-27 02:57:02,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 154 transitions, 2337 flow [2023-08-27 02:57:02,960 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 02:57:02,963 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 1719 flow [2023-08-27 02:57:02,963 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 02:57:02,963 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 86 predicate places. [2023-08-27 02:57:02,963 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 1719 flow [2023-08-27 02:57:02,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 65.91666666666667) internal successors, (791), 12 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:02,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:02,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:02,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:03,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:03,170 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:03,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:03,170 INFO L85 PathProgramCache]: Analyzing trace with hash -952580868, now seen corresponding path program 4 times [2023-08-27 02:57:03,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:03,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231883446] [2023-08-27 02:57:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:03,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:03,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:03,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231883446] [2023-08-27 02:57:03,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231883446] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:03,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142122559] [2023-08-27 02:57:03,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:57:03,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:03,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:03,267 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:03,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 02:57:03,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:57:03,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:03,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 02:57:03,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:03,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:03,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142122559] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:03,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:03,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 02:57:03,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966053945] [2023-08-27 02:57:03,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:03,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 02:57:03,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:03,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 02:57:03,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-27 02:57:03,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:03,476 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 02:57:03,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:03,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:03,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:04,011 INFO L124 PetriNetUnfolderBase]: 843/1451 cut-off events. [2023-08-27 02:57:04,011 INFO L125 PetriNetUnfolderBase]: For 30406/30406 co-relation queries the response was YES. [2023-08-27 02:57:04,018 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 02:57:04,023 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 109 selfloop transitions, 84 changer transitions 22/215 dead transitions. [2023-08-27 02:57:04,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 215 transitions, 3540 flow [2023-08-27 02:57:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 02:57:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 02:57:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1266 transitions. [2023-08-27 02:57:04,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41130604288499023 [2023-08-27 02:57:04,028 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1266 transitions. [2023-08-27 02:57:04,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1266 transitions. [2023-08-27 02:57:04,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:04,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1266 transitions. [2023-08-27 02:57:04,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 70.33333333333333) internal successors, (1266), 18 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:04,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:04,038 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:04,038 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 1719 flow. Second operand 18 states and 1266 transitions. [2023-08-27 02:57:04,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 215 transitions, 3540 flow [2023-08-27 02:57:04,096 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 02:57:04,100 INFO L231 Difference]: Finished difference. Result has 135 places, 146 transitions, 2635 flow [2023-08-27 02:57:04,101 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 02:57:04,101 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 109 predicate places. [2023-08-27 02:57:04,101 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 146 transitions, 2635 flow [2023-08-27 02:57:04,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 65.92307692307692) internal successors, (857), 13 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:04,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:04,101 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:04,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:04,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:04,307 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:04,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:04,308 INFO L85 PathProgramCache]: Analyzing trace with hash 820767897, now seen corresponding path program 5 times [2023-08-27 02:57:04,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:04,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962326281] [2023-08-27 02:57:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:04,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:04,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962326281] [2023-08-27 02:57:04,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962326281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775120728] [2023-08-27 02:57:04,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 02:57:04,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:04,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:04,403 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:04,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 02:57:04,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:57:04,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:04,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 02:57:04,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:04,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:04,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775120728] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:04,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:04,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 02:57:04,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653273596] [2023-08-27 02:57:04,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:04,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:57:04,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:04,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:57:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:57:04,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:04,598 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 02:57:04,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:04,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:04,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:05,164 INFO L124 PetriNetUnfolderBase]: 1077/1873 cut-off events. [2023-08-27 02:57:05,164 INFO L125 PetriNetUnfolderBase]: For 50339/50339 co-relation queries the response was YES. [2023-08-27 02:57:05,172 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 02:57:05,180 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 130 selfloop transitions, 117 changer transitions 19/266 dead transitions. [2023-08-27 02:57:05,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 266 transitions, 4982 flow [2023-08-27 02:57:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 02:57:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 02:57:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1332 transitions. [2023-08-27 02:57:05,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099722991689751 [2023-08-27 02:57:05,185 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1332 transitions. [2023-08-27 02:57:05,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1332 transitions. [2023-08-27 02:57:05,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:05,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1332 transitions. [2023-08-27 02:57:05,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 70.10526315789474) internal successors, (1332), 19 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:05,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:05,205 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:05,205 INFO L175 Difference]: Start difference. First operand has 135 places, 146 transitions, 2635 flow. Second operand 19 states and 1332 transitions. [2023-08-27 02:57:05,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 266 transitions, 4982 flow [2023-08-27 02:57:05,337 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 02:57:05,344 INFO L231 Difference]: Finished difference. Result has 157 places, 191 transitions, 3745 flow [2023-08-27 02:57:05,344 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 02:57:05,344 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 131 predicate places. [2023-08-27 02:57:05,345 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 191 transitions, 3745 flow [2023-08-27 02:57:05,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 65.78571428571429) internal successors, (921), 14 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:05,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:05,345 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:05,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:05,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:05,551 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 02:57:05,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:05,551 INFO L85 PathProgramCache]: Analyzing trace with hash -317607516, now seen corresponding path program 1 times [2023-08-27 02:57:05,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:05,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748923758] [2023-08-27 02:57:05,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:05,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:05,618 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 02:57:05,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:05,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748923758] [2023-08-27 02:57:05,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748923758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:05,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352757031] [2023-08-27 02:57:05,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:05,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:05,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:05,620 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:05,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 02:57:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:05,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:57:05,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:05,715 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 02:57:05,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:05,770 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 02:57:05,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352757031] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:05,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:05,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 02:57:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416792438] [2023-08-27 02:57:05,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:05,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 02:57:05,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:05,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 02:57:05,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-27 02:57:05,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 171 [2023-08-27 02:57:05,774 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 02:57:05,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:05,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 171 [2023-08-27 02:57:05,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:06,432 INFO L124 PetriNetUnfolderBase]: 1493/2546 cut-off events. [2023-08-27 02:57:06,434 INFO L125 PetriNetUnfolderBase]: For 97019/97019 co-relation queries the response was YES. [2023-08-27 02:57:06,449 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 02:57:06,460 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 146 selfloop transitions, 150 changer transitions 8/304 dead transitions. [2023-08-27 02:57:06,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 304 transitions, 6580 flow [2023-08-27 02:57:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 02:57:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 02:57:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1261 transitions. [2023-08-27 02:57:06,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.433780529755762 [2023-08-27 02:57:06,463 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1261 transitions. [2023-08-27 02:57:06,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1261 transitions. [2023-08-27 02:57:06,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:06,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1261 transitions. [2023-08-27 02:57:06,466 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 02:57:06,469 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 02:57:06,470 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 02:57:06,470 INFO L175 Difference]: Start difference. First operand has 157 places, 191 transitions, 3745 flow. Second operand 17 states and 1261 transitions. [2023-08-27 02:57:06,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 304 transitions, 6580 flow [2023-08-27 02:57:06,664 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 02:57:06,670 INFO L231 Difference]: Finished difference. Result has 174 places, 235 transitions, 5010 flow [2023-08-27 02:57:06,671 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 02:57:06,671 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 148 predicate places. [2023-08-27 02:57:06,671 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 235 transitions, 5010 flow [2023-08-27 02:57:06,672 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 02:57:06,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:06,672 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:06,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:06,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:06,877 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 02:57:06,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash -317608657, now seen corresponding path program 6 times [2023-08-27 02:57:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:06,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540034192] [2023-08-27 02:57:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:06,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:06,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540034192] [2023-08-27 02:57:06,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540034192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:06,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983442292] [2023-08-27 02:57:06,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 02:57:06,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:06,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:06,968 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:06,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 02:57:07,039 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 02:57:07,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:57:07,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 02:57:07,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:07,076 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 02:57:07,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:07,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983442292] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:07,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:07,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-27 02:57:07,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70633277] [2023-08-27 02:57:07,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:07,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 02:57:07,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 02:57:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 02:57:07,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:07,159 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 02:57:07,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:07,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:07,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:07,928 INFO L124 PetriNetUnfolderBase]: 1461/2506 cut-off events. [2023-08-27 02:57:07,928 INFO L125 PetriNetUnfolderBase]: For 79181/79181 co-relation queries the response was YES. [2023-08-27 02:57:07,943 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 02:57:07,953 INFO L140 encePairwiseOnDemand]: 165/171 looper letters, 131 selfloop transitions, 153 changer transitions 29/313 dead transitions. [2023-08-27 02:57:07,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 313 transitions, 6756 flow [2023-08-27 02:57:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 02:57:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 02:57:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1325 transitions. [2023-08-27 02:57:07,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4078177900892582 [2023-08-27 02:57:07,958 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1325 transitions. [2023-08-27 02:57:07,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1325 transitions. [2023-08-27 02:57:07,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:07,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1325 transitions. [2023-08-27 02:57:07,960 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 02:57:07,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:07,964 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 171.0) internal successors, (3420), 20 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:07,964 INFO L175 Difference]: Start difference. First operand has 174 places, 235 transitions, 5010 flow. Second operand 19 states and 1325 transitions. [2023-08-27 02:57:07,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 313 transitions, 6756 flow [2023-08-27 02:57:08,234 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 02:57:08,240 INFO L231 Difference]: Finished difference. Result has 195 places, 249 transitions, 5677 flow [2023-08-27 02:57:08,241 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 02:57:08,241 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 169 predicate places. [2023-08-27 02:57:08,241 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 249 transitions, 5677 flow [2023-08-27 02:57:08,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 65.73333333333333) internal successors, (986), 15 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:57:08,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:08,242 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:08,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:08,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-27 02:57:08,448 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-27 02:57:08,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1112456953, now seen corresponding path program 7 times [2023-08-27 02:57:08,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:08,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077572289] [2023-08-27 02:57:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:08,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:08,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:08,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:57:08,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077572289] [2023-08-27 02:57:08,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077572289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:57:08,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384872142] [2023-08-27 02:57:08,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 02:57:08,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:57:08,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:57:08,585 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:57:08,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 02:57:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:57:08,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 02:57:08,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:57:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:08,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:57:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:57:08,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384872142] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:57:08,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:57:08,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-08-27 02:57:08,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238144737] [2023-08-27 02:57:08,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:57:08,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 02:57:08,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:57:08,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 02:57:08,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-27 02:57:08,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 171 [2023-08-27 02:57:08,804 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 02:57:08,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:57:08,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 171 [2023-08-27 02:57:08,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:57:09,772 INFO L124 PetriNetUnfolderBase]: 1537/2658 cut-off events. [2023-08-27 02:57:09,772 INFO L125 PetriNetUnfolderBase]: For 92951/92951 co-relation queries the response was YES. [2023-08-27 02:57:09,785 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 02:57:09,794 INFO L140 encePairwiseOnDemand]: 163/171 looper letters, 162 selfloop transitions, 201 changer transitions 44/407 dead transitions. [2023-08-27 02:57:09,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 407 transitions, 9075 flow [2023-08-27 02:57:09,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 02:57:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 02:57:09,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2017 transitions. [2023-08-27 02:57:09,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067352288767897 [2023-08-27 02:57:09,798 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2017 transitions. [2023-08-27 02:57:09,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2017 transitions. [2023-08-27 02:57:09,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:57:09,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2017 transitions. [2023-08-27 02:57:09,802 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 02:57:09,807 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 02:57:09,808 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 02:57:09,808 INFO L175 Difference]: Start difference. First operand has 195 places, 249 transitions, 5677 flow. Second operand 29 states and 2017 transitions. [2023-08-27 02:57:09,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 407 transitions, 9075 flow [2023-08-27 02:57:10,055 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 02:57:10,060 INFO L231 Difference]: Finished difference. Result has 219 places, 301 transitions, 7081 flow [2023-08-27 02:57:10,060 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 02:57:10,061 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 193 predicate places. [2023-08-27 02:57:10,061 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 301 transitions, 7081 flow [2023-08-27 02:57:10,061 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 02:57:10,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:57:10,062 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:57:10,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 02:57:10,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 02:57:10,267 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 02:57:10,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:57:10,268 INFO L85 PathProgramCache]: Analyzing trace with hash 480637719, now seen corresponding path program 8 times [2023-08-27 02:57:10,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:57:10,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793391110] [2023-08-27 02:57:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:57:10,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:57:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:57:10,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 02:57:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:57:10,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 02:57:10,319 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 02:57:10,320 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (18 of 19 remaining) [2023-08-27 02:57:10,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 19 remaining) [2023-08-27 02:57:10,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 19 remaining) [2023-08-27 02:57:10,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 02:57:10,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 02:57:10,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 02:57:10,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 02:57:10,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 02:57:10,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-27 02:57:10,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-27 02:57:10,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-27 02:57:10,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 02:57:10,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 02:57:10,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 02:57:10,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 02:57:10,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 02:57:10,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 02:57:10,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 02:57:10,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 02:57:10,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 02:57:10,323 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 02:57:10,328 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:57:10,328 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:57:10,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:57:10 BasicIcfg [2023-08-27 02:57:10,367 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:57:10,368 INFO L158 Benchmark]: Toolchain (without parser) took 17151.65ms. Allocated memory was 350.2MB in the beginning and 616.6MB in the end (delta: 266.3MB). Free memory was 325.4MB in the beginning and 239.4MB in the end (delta: 86.0MB). Peak memory consumption was 353.9MB. Max. memory is 16.0GB. [2023-08-27 02:57:10,368 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 326.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:57:10,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.49ms. Allocated memory is still 350.2MB. Free memory was 325.4MB in the beginning and 306.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 02:57:10,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.46ms. Allocated memory is still 350.2MB. Free memory was 306.0MB in the beginning and 304.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:57:10,368 INFO L158 Benchmark]: Boogie Preprocessor took 34.13ms. Allocated memory is still 350.2MB. Free memory was 304.0MB in the beginning and 302.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:57:10,369 INFO L158 Benchmark]: RCFGBuilder took 448.67ms. Allocated memory is still 350.2MB. Free memory was 302.3MB in the beginning and 287.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 02:57:10,369 INFO L158 Benchmark]: TraceAbstraction took 16147.60ms. Allocated memory was 350.2MB in the beginning and 616.6MB in the end (delta: 266.3MB). Free memory was 287.2MB in the beginning and 239.4MB in the end (delta: 47.7MB). Peak memory consumption was 316.1MB. Max. memory is 16.0GB. [2023-08-27 02:57:10,370 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 350.2MB. Free memory is still 326.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 461.49ms. Allocated memory is still 350.2MB. Free memory was 325.4MB in the beginning and 306.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.46ms. Allocated memory is still 350.2MB. Free memory was 306.0MB in the beginning and 304.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.13ms. Allocated memory is still 350.2MB. Free memory was 304.0MB in the beginning and 302.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 448.67ms. Allocated memory is still 350.2MB. Free memory was 302.3MB in the beginning and 287.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 16147.60ms. Allocated memory was 350.2MB in the beginning and 616.6MB in the end (delta: 266.3MB). Free memory was 287.2MB in the beginning and 239.4MB in the end (delta: 47.7MB). Peak memory consumption was 316.1MB. 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: 16.0s, OverallIterations: 26, TraceHistogramMax: 5, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1564 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1564 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.3s 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, 2.4s 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 02:57:10,396 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...