/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 13:33:10,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 13:33:10,829 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 [2023-08-24 13:33:10,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 13:33:10,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 13:33:10,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 13:33:10,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 13:33:10,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 13:33:10,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 13:33:10,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 13:33:10,866 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 13:33:10,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 13:33:10,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 13:33:10,868 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 13:33:10,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 13:33:10,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 13:33:10,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 13:33:10,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 13:33:10,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 13:33:10,869 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 13:33:10,869 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 13:33:10,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 13:33:10,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 13:33:10,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 13:33:10,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 13:33:10,870 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 13:33:10,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 13:33:10,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:33:10,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 13:33:10,871 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 13:33:10,871 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 13:33:10,871 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 13:33:10,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 13:33:10,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 13:33:10,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 13:33:10,872 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 13:33:11,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 13:33:11,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 13:33:11,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 13:33:11,094 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 13:33:11,095 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 13:33:11,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-08-24 13:33:12,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 13:33:12,195 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 13:33:12,195 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-08-24 13:33:12,201 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc7a77cc/19752ccdb7f74cf4b45ffc1e81b60992/FLAG1f205f58a [2023-08-24 13:33:12,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc7a77cc/19752ccdb7f74cf4b45ffc1e81b60992 [2023-08-24 13:33:12,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 13:33:12,223 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 13:33:12,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 13:33:12,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 13:33:12,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 13:33:12,228 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da054b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12, skipping insertion in model container [2023-08-24 13:33:12,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,247 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 13:33:12,393 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2625,2638] [2023-08-24 13:33:12,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:33:12,404 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 13:33:12,436 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c[2625,2638] [2023-08-24 13:33:12,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:33:12,447 INFO L206 MainTranslator]: Completed translation [2023-08-24 13:33:12,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12 WrapperNode [2023-08-24 13:33:12,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 13:33:12,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 13:33:12,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 13:33:12,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 13:33:12,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,471 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2023-08-24 13:33:12,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 13:33:12,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 13:33:12,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 13:33:12,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 13:33:12,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 13:33:12,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 13:33:12,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 13:33:12,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 13:33:12,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (1/1) ... [2023-08-24 13:33:12,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:33:12,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:33:12,519 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) [2023-08-24 13:33:12,537 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 [2023-08-24 13:33:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 13:33:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 13:33:12,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 13:33:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 13:33:12,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 13:33:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 13:33:12,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 13:33:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-24 13:33:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-24 13:33:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 13:33:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-24 13:33:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-24 13:33:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-24 13:33:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-24 13:33:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 13:33:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 13:33:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 13:33:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 13:33:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 13:33:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 13:33:12,552 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 13:33:12,627 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 13:33:12,628 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 13:33:12,800 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 13:33:12,805 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 13:33:12,805 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 13:33:12,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:33:12 BoogieIcfgContainer [2023-08-24 13:33:12,807 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 13:33:12,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 13:33:12,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 13:33:12,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 13:33:12,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:33:12" (1/3) ... [2023-08-24 13:33:12,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57460759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:33:12, skipping insertion in model container [2023-08-24 13:33:12,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:33:12" (2/3) ... [2023-08-24 13:33:12,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57460759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:33:12, skipping insertion in model container [2023-08-24 13:33:12,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:33:12" (3/3) ... [2023-08-24 13:33:12,812 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2023-08-24 13:33:12,822 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 13:33:12,822 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 13:33:12,822 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 13:33:12,894 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-24 13:33:12,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2023-08-24 13:33:13,064 INFO L124 PetriNetUnfolderBase]: 14/163 cut-off events. [2023-08-24 13:33:13,065 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 13:33:13,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-24 13:33:13,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2023-08-24 13:33:13,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 147 transitions, 330 flow [2023-08-24 13:33:13,079 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:33:13,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 147 transitions, 330 flow [2023-08-24 13:33:13,090 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 147 transitions, 330 flow [2023-08-24 13:33:13,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 147 transitions, 330 flow [2023-08-24 13:33:13,125 INFO L124 PetriNetUnfolderBase]: 14/147 cut-off events. [2023-08-24 13:33:13,126 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 13:33:13,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 147 events. 14/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-24 13:33:13,129 INFO L119 LiptonReduction]: Number of co-enabled transitions 2916 [2023-08-24 13:33:18,470 INFO L134 LiptonReduction]: Checked pairs total: 3523 [2023-08-24 13:33:18,470 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-24 13:33:18,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 13:33:18,482 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;@47812d44, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:33:18,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-24 13:33:18,487 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:33:18,487 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2023-08-24 13:33:18,487 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 13:33:18,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:18,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:18,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:18,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:18,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1406052379, now seen corresponding path program 1 times [2023-08-24 13:33:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:18,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688844794] [2023-08-24 13:33:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:18,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:19,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:19,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688844794] [2023-08-24 13:33:19,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688844794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:33:19,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:33:19,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 13:33:19,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509146921] [2023-08-24 13:33:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:33:19,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:33:19,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:33:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:33:19,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 295 [2023-08-24 13:33:19,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:19,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:19,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 295 [2023-08-24 13:33:19,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:19,428 INFO L124 PetriNetUnfolderBase]: 3473/4229 cut-off events. [2023-08-24 13:33:19,428 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-08-24 13:33:19,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8842 conditions, 4229 events. 3473/4229 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 11612 event pairs, 837 based on Foata normal form. 1/2430 useless extension candidates. Maximal degree in co-relation 6136. Up to 3015 conditions per place. [2023-08-24 13:33:19,448 INFO L140 encePairwiseOnDemand]: 287/295 looper letters, 63 selfloop transitions, 7 changer transitions 1/71 dead transitions. [2023-08-24 13:33:19,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 353 flow [2023-08-24 13:33:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:33:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:33:19,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-24 13:33:19,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745762711864407 [2023-08-24 13:33:19,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-24 13:33:19,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-24 13:33:19,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:19,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-24 13:33:19,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:19,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:19,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:19,471 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 110 flow. Second operand 3 states and 420 transitions. [2023-08-24 13:33:19,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 353 flow [2023-08-24 13:33:19,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 71 transitions, 307 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-24 13:33:19,478 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 133 flow [2023-08-24 13:33:19,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-08-24 13:33:19,481 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-08-24 13:33:19,482 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 133 flow [2023-08-24 13:33:19,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:19,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:19,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:19,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 13:33:19,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:19,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:19,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1369672065, now seen corresponding path program 1 times [2023-08-24 13:33:19,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:19,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386599815] [2023-08-24 13:33:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:19,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:19,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:19,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386599815] [2023-08-24 13:33:19,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386599815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:33:19,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:33:19,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:33:19,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395497413] [2023-08-24 13:33:19,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:33:19,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:33:19,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:19,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:33:19,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:33:19,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:19,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:19,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:19,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:19,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:20,043 INFO L124 PetriNetUnfolderBase]: 5067/6189 cut-off events. [2023-08-24 13:33:20,043 INFO L125 PetriNetUnfolderBase]: For 2240/2240 co-relation queries the response was YES. [2023-08-24 13:33:20,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15972 conditions, 6189 events. 5067/6189 cut-off events. For 2240/2240 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19154 event pairs, 259 based on Foata normal form. 122/6311 useless extension candidates. Maximal degree in co-relation 4985. Up to 3157 conditions per place. [2023-08-24 13:33:20,069 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 116 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2023-08-24 13:33:20,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 126 transitions, 621 flow [2023-08-24 13:33:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:20,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2023-08-24 13:33:20,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057627118644068 [2023-08-24 13:33:20,073 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2023-08-24 13:33:20,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2023-08-24 13:33:20,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:20,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2023-08-24 13:33:20,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:20,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:20,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:20,079 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 133 flow. Second operand 5 states and 746 transitions. [2023-08-24 13:33:20,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 126 transitions, 621 flow [2023-08-24 13:33:20,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 126 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 13:33:20,083 INFO L231 Difference]: Finished difference. Result has 46 places, 50 transitions, 191 flow [2023-08-24 13:33:20,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2023-08-24 13:33:20,085 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-24 13:33:20,087 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 191 flow [2023-08-24 13:33:20,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:20,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:20,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:20,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 13:33:20,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:20,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:20,092 INFO L85 PathProgramCache]: Analyzing trace with hash -388248143, now seen corresponding path program 1 times [2023-08-24 13:33:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406021718] [2023-08-24 13:33:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:20,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:20,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:20,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406021718] [2023-08-24 13:33:20,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406021718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:33:20,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:33:20,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:33:20,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707984589] [2023-08-24 13:33:20,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:33:20,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:33:20,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:20,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:33:20,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:33:20,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:20,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:20,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:20,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:20,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:20,642 INFO L124 PetriNetUnfolderBase]: 4881/6003 cut-off events. [2023-08-24 13:33:20,643 INFO L125 PetriNetUnfolderBase]: For 4584/4584 co-relation queries the response was YES. [2023-08-24 13:33:20,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16717 conditions, 6003 events. 4881/6003 cut-off events. For 4584/4584 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19003 event pairs, 259 based on Foata normal form. 186/6189 useless extension candidates. Maximal degree in co-relation 7058. Up to 3157 conditions per place. [2023-08-24 13:33:20,665 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 116 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2023-08-24 13:33:20,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 124 transitions, 642 flow [2023-08-24 13:33:20,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 745 transitions. [2023-08-24 13:33:20,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050847457627119 [2023-08-24 13:33:20,667 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 745 transitions. [2023-08-24 13:33:20,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 745 transitions. [2023-08-24 13:33:20,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:20,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 745 transitions. [2023-08-24 13:33:20,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:20,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:20,671 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:20,671 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 191 flow. Second operand 5 states and 745 transitions. [2023-08-24 13:33:20,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 124 transitions, 642 flow [2023-08-24 13:33:20,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 124 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 13:33:20,676 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 205 flow [2023-08-24 13:33:20,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-08-24 13:33:20,677 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-24 13:33:20,677 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 205 flow [2023-08-24 13:33:20,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:20,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:20,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:20,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 13:33:20,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:20,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:20,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1430537406, now seen corresponding path program 1 times [2023-08-24 13:33:20,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:20,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133669415] [2023-08-24 13:33:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:20,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:20,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:20,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133669415] [2023-08-24 13:33:20,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133669415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:33:20,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260569758] [2023-08-24 13:33:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:20,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:33:20,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:33:20,779 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) [2023-08-24 13:33:20,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 13:33:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:20,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 13:33:20,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:33:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:20,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:33:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:21,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260569758] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:33:21,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:33:21,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-24 13:33:21,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939036110] [2023-08-24 13:33:21,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:33:21,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 13:33:21,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:21,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 13:33:21,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 13:33:21,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:21,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:21,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:21,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:21,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:21,791 INFO L124 PetriNetUnfolderBase]: 10865/13371 cut-off events. [2023-08-24 13:33:21,792 INFO L125 PetriNetUnfolderBase]: For 16553/16553 co-relation queries the response was YES. [2023-08-24 13:33:21,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39650 conditions, 13371 events. 10865/13371 cut-off events. For 16553/16553 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 47176 event pairs, 2521 based on Foata normal form. 336/13707 useless extension candidates. Maximal degree in co-relation 19156. Up to 5541 conditions per place. [2023-08-24 13:33:21,840 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 138 selfloop transitions, 8 changer transitions 0/146 dead transitions. [2023-08-24 13:33:21,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 146 transitions, 898 flow [2023-08-24 13:33:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 748 transitions. [2023-08-24 13:33:21,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071186440677966 [2023-08-24 13:33:21,842 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 748 transitions. [2023-08-24 13:33:21,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 748 transitions. [2023-08-24 13:33:21,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:21,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 748 transitions. [2023-08-24 13:33:21,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:21,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:21,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:21,846 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 205 flow. Second operand 5 states and 748 transitions. [2023-08-24 13:33:21,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 146 transitions, 898 flow [2023-08-24 13:33:21,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 146 transitions, 879 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 13:33:21,850 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 253 flow [2023-08-24 13:33:21,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-08-24 13:33:21,851 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-08-24 13:33:21,851 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 253 flow [2023-08-24 13:33:21,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:21,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:21,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:21,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 13:33:22,056 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 [2023-08-24 13:33:22,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:22,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:22,057 INFO L85 PathProgramCache]: Analyzing trace with hash -204521481, now seen corresponding path program 2 times [2023-08-24 13:33:22,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:22,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919000967] [2023-08-24 13:33:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:22,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:22,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:22,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919000967] [2023-08-24 13:33:22,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919000967] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:33:22,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506037877] [2023-08-24 13:33:22,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:33:22,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:33:22,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:33:22,278 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) [2023-08-24 13:33:22,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 13:33:22,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 13:33:22,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:33:22,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 13:33:22,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:33:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:22,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:33:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:22,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506037877] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:33:22,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:33:22,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-24 13:33:22,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478232201] [2023-08-24 13:33:22,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:33:22,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 13:33:22,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:22,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 13:33:22,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 13:33:22,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:22,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:22,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:22,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:22,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:23,430 INFO L124 PetriNetUnfolderBase]: 13057/16015 cut-off events. [2023-08-24 13:33:23,431 INFO L125 PetriNetUnfolderBase]: For 28136/28136 co-relation queries the response was YES. [2023-08-24 13:33:23,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55836 conditions, 16015 events. 13057/16015 cut-off events. For 28136/28136 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 56951 event pairs, 4131 based on Foata normal form. 452/16467 useless extension candidates. Maximal degree in co-relation 28964. Up to 6947 conditions per place. [2023-08-24 13:33:23,553 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 134 selfloop transitions, 8 changer transitions 0/142 dead transitions. [2023-08-24 13:33:23,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 142 transitions, 885 flow [2023-08-24 13:33:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2023-08-24 13:33:23,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057627118644068 [2023-08-24 13:33:23,556 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2023-08-24 13:33:23,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2023-08-24 13:33:23,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:23,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2023-08-24 13:33:23,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:23,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:23,560 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:23,560 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 253 flow. Second operand 5 states and 746 transitions. [2023-08-24 13:33:23,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 142 transitions, 885 flow [2023-08-24 13:33:23,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 142 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 13:33:23,591 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 303 flow [2023-08-24 13:33:23,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-24 13:33:23,593 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2023-08-24 13:33:23,595 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 303 flow [2023-08-24 13:33:23,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:23,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:23,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:23,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 13:33:23,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:33:23,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:23,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:23,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1843659482, now seen corresponding path program 1 times [2023-08-24 13:33:23,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:23,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838030826] [2023-08-24 13:33:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:23,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:23,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:23,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838030826] [2023-08-24 13:33:23,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838030826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:33:23,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:33:23,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:33:23,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731993441] [2023-08-24 13:33:23,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:33:23,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:33:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:23,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:33:23,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:33:23,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:23,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:23,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:23,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:23,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:24,838 INFO L124 PetriNetUnfolderBase]: 12765/15723 cut-off events. [2023-08-24 13:33:24,838 INFO L125 PetriNetUnfolderBase]: For 35246/35246 co-relation queries the response was YES. [2023-08-24 13:33:24,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57810 conditions, 15723 events. 12765/15723 cut-off events. For 35246/35246 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 58854 event pairs, 471 based on Foata normal form. 292/16015 useless extension candidates. Maximal degree in co-relation 39073. Up to 6655 conditions per place. [2023-08-24 13:33:24,901 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 152 selfloop transitions, 10 changer transitions 0/162 dead transitions. [2023-08-24 13:33:24,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 162 transitions, 1185 flow [2023-08-24 13:33:24,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-08-24 13:33:24,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030508474576271 [2023-08-24 13:33:24,903 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-08-24 13:33:24,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-08-24 13:33:24,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:24,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-08-24 13:33:24,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:24,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:24,906 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:24,907 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 303 flow. Second operand 5 states and 742 transitions. [2023-08-24 13:33:24,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 162 transitions, 1185 flow [2023-08-24 13:33:24,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 162 transitions, 1156 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-24 13:33:24,956 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 357 flow [2023-08-24 13:33:24,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=357, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-24 13:33:24,956 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-08-24 13:33:24,956 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 357 flow [2023-08-24 13:33:24,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:24,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:24,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:24,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 13:33:24,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:24,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:24,957 INFO L85 PathProgramCache]: Analyzing trace with hash 49168946, now seen corresponding path program 1 times [2023-08-24 13:33:24,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:24,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241374427] [2023-08-24 13:33:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:24,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:25,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:25,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241374427] [2023-08-24 13:33:25,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241374427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:33:25,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182161105] [2023-08-24 13:33:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:25,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:33:25,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:33:25,066 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) [2023-08-24 13:33:25,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 13:33:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:25,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 13:33:25,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:33:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:25,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:33:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:25,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182161105] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:33:25,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:33:25,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-24 13:33:25,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327036539] [2023-08-24 13:33:25,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:33:25,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 13:33:25,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:25,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 13:33:25,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 13:33:25,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:25,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:25,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:25,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:25,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:27,224 INFO L124 PetriNetUnfolderBase]: 28973/35717 cut-off events. [2023-08-24 13:33:27,224 INFO L125 PetriNetUnfolderBase]: For 94890/94890 co-relation queries the response was YES. [2023-08-24 13:33:27,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137761 conditions, 35717 events. 28973/35717 cut-off events. For 94890/94890 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 145456 event pairs, 5739 based on Foata normal form. 900/36617 useless extension candidates. Maximal degree in co-relation 88518. Up to 15928 conditions per place. [2023-08-24 13:33:27,392 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 179 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2023-08-24 13:33:27,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 187 transitions, 1478 flow [2023-08-24 13:33:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2023-08-24 13:33:27,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016949152542373 [2023-08-24 13:33:27,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2023-08-24 13:33:27,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2023-08-24 13:33:27,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:27,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2023-08-24 13:33:27,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:27,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:27,398 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:27,398 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 357 flow. Second operand 5 states and 740 transitions. [2023-08-24 13:33:27,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 187 transitions, 1478 flow [2023-08-24 13:33:27,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 187 transitions, 1430 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-24 13:33:27,452 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 397 flow [2023-08-24 13:33:27,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-08-24 13:33:27,452 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-08-24 13:33:27,452 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 397 flow [2023-08-24 13:33:27,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:27,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:27,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:27,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-24 13:33:27,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:33:27,657 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:27,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:27,658 INFO L85 PathProgramCache]: Analyzing trace with hash 757953015, now seen corresponding path program 1 times [2023-08-24 13:33:27,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:27,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303114744] [2023-08-24 13:33:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:27,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:27,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:27,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303114744] [2023-08-24 13:33:27,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303114744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:33:27,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:33:27,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:33:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221410374] [2023-08-24 13:33:27,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:33:27,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:33:27,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:27,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:33:27,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:33:27,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:27,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:27,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:27,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:27,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:29,622 INFO L124 PetriNetUnfolderBase]: 28517/35261 cut-off events. [2023-08-24 13:33:29,622 INFO L125 PetriNetUnfolderBase]: For 98216/98216 co-relation queries the response was YES. [2023-08-24 13:33:29,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150029 conditions, 35261 events. 28517/35261 cut-off events. For 98216/98216 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 146629 event pairs, 1619 based on Foata normal form. 456/35717 useless extension candidates. Maximal degree in co-relation 99537. Up to 15472 conditions per place. [2023-08-24 13:33:29,786 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 186 selfloop transitions, 10 changer transitions 0/196 dead transitions. [2023-08-24 13:33:29,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 196 transitions, 1571 flow [2023-08-24 13:33:29,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 738 transitions. [2023-08-24 13:33:29,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003389830508475 [2023-08-24 13:33:29,788 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 738 transitions. [2023-08-24 13:33:29,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 738 transitions. [2023-08-24 13:33:29,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:29,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 738 transitions. [2023-08-24 13:33:29,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:29,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:29,792 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:29,792 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 397 flow. Second operand 5 states and 738 transitions. [2023-08-24 13:33:29,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 196 transitions, 1571 flow [2023-08-24 13:33:30,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 196 transitions, 1571 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 13:33:30,080 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 460 flow [2023-08-24 13:33:30,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=460, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-08-24 13:33:30,081 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-08-24 13:33:30,081 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 460 flow [2023-08-24 13:33:30,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:30,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:30,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:30,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 13:33:30,082 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:30,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash -48523343, now seen corresponding path program 2 times [2023-08-24 13:33:30,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:30,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950202528] [2023-08-24 13:33:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:30,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:30,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:30,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950202528] [2023-08-24 13:33:30,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950202528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:33:30,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:33:30,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:33:30,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839500910] [2023-08-24 13:33:30,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:33:30,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:33:30,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:30,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:33:30,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:33:30,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:30,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:30,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:30,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:30,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:32,540 INFO L124 PetriNetUnfolderBase]: 32569/40201 cut-off events. [2023-08-24 13:33:32,540 INFO L125 PetriNetUnfolderBase]: For 118580/118580 co-relation queries the response was YES. [2023-08-24 13:33:32,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178904 conditions, 40201 events. 32569/40201 cut-off events. For 118580/118580 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 166776 event pairs, 5319 based on Foata normal form. 888/41089 useless extension candidates. Maximal degree in co-relation 118526. Up to 23661 conditions per place. [2023-08-24 13:33:32,731 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 178 selfloop transitions, 10 changer transitions 0/188 dead transitions. [2023-08-24 13:33:32,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 188 transitions, 1539 flow [2023-08-24 13:33:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:32,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 734 transitions. [2023-08-24 13:33:32,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976271186440678 [2023-08-24 13:33:32,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 734 transitions. [2023-08-24 13:33:32,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 734 transitions. [2023-08-24 13:33:32,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:32,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 734 transitions. [2023-08-24 13:33:32,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:32,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:32,736 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:32,736 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 460 flow. Second operand 5 states and 734 transitions. [2023-08-24 13:33:32,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 188 transitions, 1539 flow [2023-08-24 13:33:33,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 188 transitions, 1524 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-24 13:33:33,157 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 499 flow [2023-08-24 13:33:33,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2023-08-24 13:33:33,158 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-08-24 13:33:33,158 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 499 flow [2023-08-24 13:33:33,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:33,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:33,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:33,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 13:33:33,158 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:33,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:33,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1305311766, now seen corresponding path program 2 times [2023-08-24 13:33:33,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:33,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708767141] [2023-08-24 13:33:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:33,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:33,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:33,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708767141] [2023-08-24 13:33:33,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708767141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:33:33,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:33:33,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:33:33,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946012645] [2023-08-24 13:33:33,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:33:33,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:33:33,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:33,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:33:33,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:33:33,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:33,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:33,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:33,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:33,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:35,427 INFO L124 PetriNetUnfolderBase]: 28961/35681 cut-off events. [2023-08-24 13:33:35,427 INFO L125 PetriNetUnfolderBase]: For 113304/113304 co-relation queries the response was YES. [2023-08-24 13:33:35,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165857 conditions, 35681 events. 28961/35681 cut-off events. For 113304/113304 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 145276 event pairs, 1643 based on Foata normal form. 444/36125 useless extension candidates. Maximal degree in co-relation 145228. Up to 15910 conditions per place. [2023-08-24 13:33:35,726 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 187 selfloop transitions, 9 changer transitions 0/196 dead transitions. [2023-08-24 13:33:35,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 196 transitions, 1625 flow [2023-08-24 13:33:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2023-08-24 13:33:35,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49966101694915255 [2023-08-24 13:33:35,735 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2023-08-24 13:33:35,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2023-08-24 13:33:35,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:35,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2023-08-24 13:33:35,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:35,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:35,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:35,740 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 499 flow. Second operand 5 states and 737 transitions. [2023-08-24 13:33:35,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 196 transitions, 1625 flow [2023-08-24 13:33:36,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 196 transitions, 1601 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-24 13:33:36,295 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 490 flow [2023-08-24 13:33:36,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2023-08-24 13:33:36,295 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-08-24 13:33:36,295 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 490 flow [2023-08-24 13:33:36,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:36,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:36,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:36,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 13:33:36,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:36,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1522859476, now seen corresponding path program 2 times [2023-08-24 13:33:36,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:36,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172552940] [2023-08-24 13:33:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:36,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:36,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:36,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172552940] [2023-08-24 13:33:36,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172552940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:33:36,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:33:36,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:33:36,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963574507] [2023-08-24 13:33:36,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:33:36,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:33:36,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:36,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:33:36,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:33:36,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:36,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:36,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:36,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:36,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:38,133 INFO L124 PetriNetUnfolderBase]: 24413/29993 cut-off events. [2023-08-24 13:33:38,133 INFO L125 PetriNetUnfolderBase]: For 112055/112055 co-relation queries the response was YES. [2023-08-24 13:33:38,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139706 conditions, 29993 events. 24413/29993 cut-off events. For 112055/112055 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 122857 event pairs, 885 based on Foata normal form. 508/30501 useless extension candidates. Maximal degree in co-relation 122129. Up to 13182 conditions per place. [2023-08-24 13:33:38,289 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 198 selfloop transitions, 9 changer transitions 0/207 dead transitions. [2023-08-24 13:33:38,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 207 transitions, 1776 flow [2023-08-24 13:33:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:38,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2023-08-24 13:33:38,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023728813559322 [2023-08-24 13:33:38,294 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2023-08-24 13:33:38,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2023-08-24 13:33:38,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:38,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2023-08-24 13:33:38,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:38,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:38,434 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:38,434 INFO L175 Difference]: Start difference. First operand has 86 places, 74 transitions, 490 flow. Second operand 5 states and 741 transitions. [2023-08-24 13:33:38,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 207 transitions, 1776 flow [2023-08-24 13:33:38,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 207 transitions, 1739 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-24 13:33:38,607 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 494 flow [2023-08-24 13:33:38,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2023-08-24 13:33:38,607 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2023-08-24 13:33:38,607 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 494 flow [2023-08-24 13:33:38,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:38,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:38,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:38,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 13:33:38,608 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:38,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:38,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1825918594, now seen corresponding path program 2 times [2023-08-24 13:33:38,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:38,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554654428] [2023-08-24 13:33:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:38,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:38,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:38,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554654428] [2023-08-24 13:33:38,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554654428] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:33:38,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190750960] [2023-08-24 13:33:38,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:33:38,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:33:38,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:33:38,727 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) [2023-08-24 13:33:38,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 13:33:38,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 13:33:38,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:33:38,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 13:33:38,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:33:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:38,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:33:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:38,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190750960] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:33:38,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:33:38,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-24 13:33:38,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446216203] [2023-08-24 13:33:38,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:33:38,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 13:33:38,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 13:33:38,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 13:33:38,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:38,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:38,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:38,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:38,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:41,286 INFO L124 PetriNetUnfolderBase]: 29277/35873 cut-off events. [2023-08-24 13:33:41,286 INFO L125 PetriNetUnfolderBase]: For 124698/124698 co-relation queries the response was YES. [2023-08-24 13:33:41,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170952 conditions, 35873 events. 29277/35873 cut-off events. For 124698/124698 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 145192 event pairs, 5255 based on Foata normal form. 1016/36889 useless extension candidates. Maximal degree in co-relation 153598. Up to 20069 conditions per place. [2023-08-24 13:33:41,461 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 193 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2023-08-24 13:33:41,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 201 transitions, 1711 flow [2023-08-24 13:33:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 738 transitions. [2023-08-24 13:33:41,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003389830508475 [2023-08-24 13:33:41,463 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 738 transitions. [2023-08-24 13:33:41,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 738 transitions. [2023-08-24 13:33:41,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:41,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 738 transitions. [2023-08-24 13:33:41,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:41,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:41,466 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:41,466 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 494 flow. Second operand 5 states and 738 transitions. [2023-08-24 13:33:41,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 201 transitions, 1711 flow [2023-08-24 13:33:41,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 201 transitions, 1702 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 13:33:41,655 INFO L231 Difference]: Finished difference. Result has 95 places, 76 transitions, 535 flow [2023-08-24 13:33:41,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=535, PETRI_PLACES=95, PETRI_TRANSITIONS=76} [2023-08-24 13:33:41,656 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 45 predicate places. [2023-08-24 13:33:41,656 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 76 transitions, 535 flow [2023-08-24 13:33:41,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:41,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:41,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:41,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 13:33:41,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:33:41,861 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:41,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:41,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1783679507, now seen corresponding path program 2 times [2023-08-24 13:33:41,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:41,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102049808] [2023-08-24 13:33:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:41,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:41,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:41,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102049808] [2023-08-24 13:33:41,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102049808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:33:41,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:33:41,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:33:41,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948243540] [2023-08-24 13:33:41,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:33:41,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:33:41,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:33:41,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:33:41,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:33:41,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 13:33:41,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 76 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:41,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:33:41,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 13:33:41,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:33:44,465 INFO L124 PetriNetUnfolderBase]: 33421/40853 cut-off events. [2023-08-24 13:33:44,465 INFO L125 PetriNetUnfolderBase]: For 170067/170067 co-relation queries the response was YES. [2023-08-24 13:33:44,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204727 conditions, 40853 events. 33421/40853 cut-off events. For 170067/170067 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 162364 event pairs, 10579 based on Foata normal form. 836/41689 useless extension candidates. Maximal degree in co-relation 184652. Up to 23061 conditions per place. [2023-08-24 13:33:44,735 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 209 selfloop transitions, 8 changer transitions 0/217 dead transitions. [2023-08-24 13:33:44,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 217 transitions, 1913 flow [2023-08-24 13:33:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 13:33:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 13:33:44,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-08-24 13:33:44,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030508474576271 [2023-08-24 13:33:44,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-08-24 13:33:44,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-08-24 13:33:44,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:33:44,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-08-24 13:33:44,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:44,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:44,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:44,741 INFO L175 Difference]: Start difference. First operand has 95 places, 76 transitions, 535 flow. Second operand 5 states and 742 transitions. [2023-08-24 13:33:44,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 217 transitions, 1913 flow [2023-08-24 13:33:45,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 217 transitions, 1835 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-08-24 13:33:45,272 INFO L231 Difference]: Finished difference. Result has 99 places, 79 transitions, 568 flow [2023-08-24 13:33:45,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=99, PETRI_TRANSITIONS=79} [2023-08-24 13:33:45,272 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 49 predicate places. [2023-08-24 13:33:45,272 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 79 transitions, 568 flow [2023-08-24 13:33:45,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:33:45,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:33:45,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:33:45,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 13:33:45,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:33:45,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:33:45,273 INFO L85 PathProgramCache]: Analyzing trace with hash 505429562, now seen corresponding path program 1 times [2023-08-24 13:33:45,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:33:45,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722990467] [2023-08-24 13:33:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:45,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:33:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:33:45,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:33:45,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722990467] [2023-08-24 13:33:45,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722990467] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:33:45,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272157957] [2023-08-24 13:33:45,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:33:45,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:33:45,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:33:45,716 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) [2023-08-24 13:33:45,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 13:33:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:33:45,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 13:33:45,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:35:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:35:26,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:35:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:35:43,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272157957] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:35:43,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:35:43,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-24 13:35:43,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863630600] [2023-08-24 13:35:43,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:35:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 13:35:43,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:35:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 13:35:43,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=165, Unknown=18, NotChecked=0, Total=240 [2023-08-24 13:35:43,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-08-24 13:35:43,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 79 transitions, 568 flow. Second operand has 16 states, 16 states have (on average 119.5) internal successors, (1912), 16 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:35:43,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:35:43,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-08-24 13:35:43,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:35:56,711 WARN L234 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 69 DAG size of output: 54 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:35:58,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:00,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:16,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:27,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:29,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:39,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:41,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:43,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:45,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:47,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:49,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:52,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:54,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:56,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:36:58,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:00,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:03,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:04,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:06,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:08,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:10,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:21,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:23,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:38,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:52,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:37:53,144 INFO L124 PetriNetUnfolderBase]: 41783/51367 cut-off events. [2023-08-24 13:37:53,144 INFO L125 PetriNetUnfolderBase]: For 197381/197381 co-relation queries the response was YES. [2023-08-24 13:37:53,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256951 conditions, 51367 events. 41783/51367 cut-off events. For 197381/197381 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 218162 event pairs, 7369 based on Foata normal form. 66/51433 useless extension candidates. Maximal degree in co-relation 232907. Up to 42045 conditions per place. [2023-08-24 13:37:53,476 INFO L140 encePairwiseOnDemand]: 285/295 looper letters, 341 selfloop transitions, 119 changer transitions 19/479 dead transitions. [2023-08-24 13:37:53,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 479 transitions, 3911 flow [2023-08-24 13:37:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 13:37:53,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 13:37:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2041 transitions. [2023-08-24 13:37:53,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612429378531073 [2023-08-24 13:37:53,480 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2041 transitions. [2023-08-24 13:37:53,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2041 transitions. [2023-08-24 13:37:53,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:37:53,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2041 transitions. [2023-08-24 13:37:53,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 136.06666666666666) internal successors, (2041), 15 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:37:53,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 295.0) internal successors, (4720), 16 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:37:53,487 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 295.0) internal successors, (4720), 16 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:37:53,487 INFO L175 Difference]: Start difference. First operand has 99 places, 79 transitions, 568 flow. Second operand 15 states and 2041 transitions. [2023-08-24 13:37:53,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 479 transitions, 3911 flow [2023-08-24 13:37:54,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 479 transitions, 3810 flow, removed 36 selfloop flow, removed 1 redundant places. [2023-08-24 13:37:54,316 INFO L231 Difference]: Finished difference. Result has 120 places, 193 transitions, 1987 flow [2023-08-24 13:37:54,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1987, PETRI_PLACES=120, PETRI_TRANSITIONS=193} [2023-08-24 13:37:54,317 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 70 predicate places. [2023-08-24 13:37:54,317 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 193 transitions, 1987 flow [2023-08-24 13:37:54,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.5) internal successors, (1912), 16 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:37:54,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:37:54,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:37:54,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 13:37:54,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 13:37:54,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:37:54,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:37:54,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1464858319, now seen corresponding path program 1 times [2023-08-24 13:37:54,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:37:54,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950176772] [2023-08-24 13:37:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:37:54,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:37:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:37:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:37:55,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:37:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950176772] [2023-08-24 13:37:55,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950176772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:37:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135108813] [2023-08-24 13:37:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:37:55,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:37:55,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:37:55,133 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) [2023-08-24 13:37:55,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 13:37:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:37:55,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 13:37:55,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:38:04,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:38:04,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:38:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:38:08,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135108813] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:38:08,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:38:08,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-24 13:38:08,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880785503] [2023-08-24 13:38:08,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:38:08,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 13:38:08,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:38:08,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 13:38:08,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=168, Unknown=2, NotChecked=0, Total=240 [2023-08-24 13:38:08,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-08-24 13:38:08,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 193 transitions, 1987 flow. Second operand has 16 states, 16 states have (on average 119.6875) internal successors, (1915), 16 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:38:08,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:38:08,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-08-24 13:38:08,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:38:14,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:17,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:19,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:28,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:30,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:33,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:34,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:38,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:40,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:44,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:51,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:53,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:38:55,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:39:04,868 INFO L124 PetriNetUnfolderBase]: 56291/69580 cut-off events. [2023-08-24 13:39:04,868 INFO L125 PetriNetUnfolderBase]: For 310782/310782 co-relation queries the response was YES. [2023-08-24 13:39:05,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381307 conditions, 69580 events. 56291/69580 cut-off events. For 310782/310782 co-relation queries the response was YES. Maximal size of possible extension queue 1770. Compared 316333 event pairs, 7061 based on Foata normal form. 91/69671 useless extension candidates. Maximal degree in co-relation 378417. Up to 54575 conditions per place. [2023-08-24 13:39:05,662 INFO L140 encePairwiseOnDemand]: 285/295 looper letters, 534 selfloop transitions, 156 changer transitions 12/702 dead transitions. [2023-08-24 13:39:05,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 702 transitions, 6583 flow [2023-08-24 13:39:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 13:39:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 13:39:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2226 transitions. [2023-08-24 13:39:05,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716101694915254 [2023-08-24 13:39:05,667 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2226 transitions. [2023-08-24 13:39:05,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2226 transitions. [2023-08-24 13:39:05,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:39:05,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2226 transitions. [2023-08-24 13:39:05,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.125) internal successors, (2226), 16 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:39:05,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 295.0) internal successors, (5015), 17 states have internal predecessors, (5015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:39:05,674 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 295.0) internal successors, (5015), 17 states have internal predecessors, (5015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:39:05,674 INFO L175 Difference]: Start difference. First operand has 120 places, 193 transitions, 1987 flow. Second operand 16 states and 2226 transitions. [2023-08-24 13:39:05,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 702 transitions, 6583 flow [2023-08-24 13:39:07,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 702 transitions, 6352 flow, removed 112 selfloop flow, removed 1 redundant places. [2023-08-24 13:39:07,568 INFO L231 Difference]: Finished difference. Result has 144 places, 345 transitions, 3861 flow [2023-08-24 13:39:07,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3861, PETRI_PLACES=144, PETRI_TRANSITIONS=345} [2023-08-24 13:39:07,569 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 94 predicate places. [2023-08-24 13:39:07,569 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 345 transitions, 3861 flow [2023-08-24 13:39:07,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.6875) internal successors, (1915), 16 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:39:07,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:39:07,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:39:07,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-24 13:39:07,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 13:39:07,773 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:39:07,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:39:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash 527515620, now seen corresponding path program 2 times [2023-08-24 13:39:07,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:39:07,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864292250] [2023-08-24 13:39:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:39:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:39:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:39:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:39:08,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:39:08,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864292250] [2023-08-24 13:39:08,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864292250] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:39:08,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622373531] [2023-08-24 13:39:08,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:39:08,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:39:08,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:39:08,344 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) [2023-08-24 13:39:08,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 13:39:09,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 13:39:09,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:39:09,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 13:39:09,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:39:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:39:58,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:40:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:40:16,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622373531] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:40:16,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:40:16,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 15 [2023-08-24 13:40:16,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915387959] [2023-08-24 13:40:16,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:40:16,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 13:40:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:40:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 13:40:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=190, Unknown=24, NotChecked=0, Total=272 [2023-08-24 13:40:16,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-08-24 13:40:16,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 345 transitions, 3861 flow. Second operand has 17 states, 17 states have (on average 119.58823529411765) internal successors, (2033), 17 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:40:16,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:40:16,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-08-24 13:40:16,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:40:18,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:40:28,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:40:40,420 WARN L234 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 73 DAG size of output: 39 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:40:50,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:40:53,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:40:55,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:04,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:10,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:13,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:16,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:19,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:24,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:28,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:39,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:43,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:45,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:46,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:41:46,979 INFO L124 PetriNetUnfolderBase]: 66163/81925 cut-off events. [2023-08-24 13:41:46,979 INFO L125 PetriNetUnfolderBase]: For 488707/488707 co-relation queries the response was YES. [2023-08-24 13:41:47,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491890 conditions, 81925 events. 66163/81925 cut-off events. For 488707/488707 co-relation queries the response was YES. Maximal size of possible extension queue 2163. Compared 381176 event pairs, 8023 based on Foata normal form. 65/81990 useless extension candidates. Maximal degree in co-relation 489081. Up to 70274 conditions per place. [2023-08-24 13:41:47,939 INFO L140 encePairwiseOnDemand]: 285/295 looper letters, 619 selfloop transitions, 185 changer transitions 16/820 dead transitions. [2023-08-24 13:41:47,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 820 transitions, 9041 flow [2023-08-24 13:41:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 13:41:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 13:41:47,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2176 transitions. [2023-08-24 13:41:47,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610169491525424 [2023-08-24 13:41:47,943 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2176 transitions. [2023-08-24 13:41:47,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2176 transitions. [2023-08-24 13:41:47,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:41:47,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2176 transitions. [2023-08-24 13:41:47,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 136.0) internal successors, (2176), 16 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:41:47,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 295.0) internal successors, (5015), 17 states have internal predecessors, (5015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:41:47,950 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 295.0) internal successors, (5015), 17 states have internal predecessors, (5015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:41:47,950 INFO L175 Difference]: Start difference. First operand has 144 places, 345 transitions, 3861 flow. Second operand 16 states and 2176 transitions. [2023-08-24 13:41:47,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 820 transitions, 9041 flow [2023-08-24 13:41:52,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 820 transitions, 8536 flow, removed 249 selfloop flow, removed 1 redundant places. [2023-08-24 13:41:52,408 INFO L231 Difference]: Finished difference. Result has 168 places, 508 transitions, 5941 flow [2023-08-24 13:41:52,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=3356, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5941, PETRI_PLACES=168, PETRI_TRANSITIONS=508} [2023-08-24 13:41:52,408 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 118 predicate places. [2023-08-24 13:41:52,408 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 508 transitions, 5941 flow [2023-08-24 13:41:52,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 119.58823529411765) internal successors, (2033), 17 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:41:52,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:41:52,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:41:52,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-24 13:41:52,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:41:52,610 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:41:52,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:41:52,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1690832751, now seen corresponding path program 1 times [2023-08-24 13:41:52,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:41:52,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830268443] [2023-08-24 13:41:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:41:52,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:41:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:41:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:41:53,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:41:53,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830268443] [2023-08-24 13:41:53,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830268443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:41:53,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160598913] [2023-08-24 13:41:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:41:53,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:41:53,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:41:53,031 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) [2023-08-24 13:41:53,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 13:41:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:41:53,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 13:41:53,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:42:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:42:23,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:42:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:42:38,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160598913] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:42:38,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:42:38,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-24 13:42:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996899266] [2023-08-24 13:42:38,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:42:38,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 13:42:38,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:42:38,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 13:42:38,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=168, Unknown=15, NotChecked=0, Total=240 [2023-08-24 13:42:38,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-08-24 13:42:38,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 508 transitions, 5941 flow. Second operand has 16 states, 16 states have (on average 119.4375) internal successors, (1911), 16 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:42:38,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:42:38,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-08-24 13:42:38,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:42:40,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:42:49,177 WARN L234 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 67 DAG size of output: 56 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:42:51,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:42:55,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:42:58,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:42:59,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:02,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:04,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:06,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:14,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:16,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:28,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:29,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:33,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:35,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:39,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:41,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:43,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:47,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:49,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:52,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:53,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:55,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:43:57,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:44:03,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:44:04,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:44:06,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:44:09,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:44:13,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:44:16,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:44:21,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:44:24,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:44:29,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:44:32,670 INFO L124 PetriNetUnfolderBase]: 83315/103506 cut-off events. [2023-08-24 13:44:32,670 INFO L125 PetriNetUnfolderBase]: For 736728/736728 co-relation queries the response was YES. [2023-08-24 13:44:33,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651892 conditions, 103506 events. 83315/103506 cut-off events. For 736728/736728 co-relation queries the response was YES. Maximal size of possible extension queue 2745. Compared 502087 event pairs, 5677 based on Foata normal form. 97/103603 useless extension candidates. Maximal degree in co-relation 648674. Up to 86959 conditions per place. [2023-08-24 13:44:34,188 INFO L140 encePairwiseOnDemand]: 285/295 looper letters, 877 selfloop transitions, 174 changer transitions 10/1061 dead transitions. [2023-08-24 13:44:34,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1061 transitions, 12164 flow [2023-08-24 13:44:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 13:44:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 13:44:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2246 transitions. [2023-08-24 13:44:34,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47584745762711866 [2023-08-24 13:44:34,191 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2246 transitions. [2023-08-24 13:44:34,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2246 transitions. [2023-08-24 13:44:34,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:44:34,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2246 transitions. [2023-08-24 13:44:34,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 140.375) internal successors, (2246), 16 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:44:34,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 295.0) internal successors, (5015), 17 states have internal predecessors, (5015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:44:34,204 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 295.0) internal successors, (5015), 17 states have internal predecessors, (5015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:44:34,204 INFO L175 Difference]: Start difference. First operand has 168 places, 508 transitions, 5941 flow. Second operand 16 states and 2246 transitions. [2023-08-24 13:44:34,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1061 transitions, 12164 flow [2023-08-24 13:44:42,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1061 transitions, 11279 flow, removed 427 selfloop flow, removed 3 redundant places. [2023-08-24 13:44:42,306 INFO L231 Difference]: Finished difference. Result has 190 places, 678 transitions, 7873 flow [2023-08-24 13:44:42,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=5084, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7873, PETRI_PLACES=190, PETRI_TRANSITIONS=678} [2023-08-24 13:44:42,307 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 140 predicate places. [2023-08-24 13:44:42,307 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 678 transitions, 7873 flow [2023-08-24 13:44:42,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.4375) internal successors, (1911), 16 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:44:42,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:44:42,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:44:42,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 13:44:42,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-24 13:44:42,513 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 13:44:42,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:44:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1411442461, now seen corresponding path program 2 times [2023-08-24 13:44:42,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:44:42,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581380682] [2023-08-24 13:44:42,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:44:42,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:44:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:44:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:44:42,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:44:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581380682] [2023-08-24 13:44:42,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581380682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:44:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129444110] [2023-08-24 13:44:42,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:44:42,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:44:42,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:44:42,890 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) [2023-08-24 13:44:42,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 13:44:43,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 13:44:43,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:44:43,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 13:44:43,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:45:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:45:52,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:46:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:46:26,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129444110] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:46:26,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:46:26,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 15 [2023-08-24 13:46:26,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377934500] [2023-08-24 13:46:26,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:46:26,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 13:46:26,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:46:26,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 13:46:26,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=177, Unknown=37, NotChecked=0, Total=272 [2023-08-24 13:46:26,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-08-24 13:46:26,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 678 transitions, 7873 flow. Second operand has 17 states, 17 states have (on average 119.3529411764706) internal successors, (2029), 17 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:46:26,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:46:26,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-08-24 13:46:26,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:46:29,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:46:44,193 WARN L234 SmtUtils]: Spent 13.94s on a formula simplification. DAG size of input: 80 DAG size of output: 32 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:46:46,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:46:49,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:46:51,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:46:52,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:46:54,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:46:55,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:47:14,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:47:20,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:47:22,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:47:24,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:47:26,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:47:28,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:47:30,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:47:32,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:47:34,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-08-24 13:47:35,122 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 13:47:35,122 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 13:47:36,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 13:47:36,323 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-08-24 13:47:36,328 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 137 [2023-08-24 13:47:36,329 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-24 13:47:36,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 13:47:36,330 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 13:47:36,331 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-08-24 13:47:36,331 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-24 13:47:36,331 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-24 13:47:36,331 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-24 13:47:36,331 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-24 13:47:36,331 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-08-24 13:47:36,331 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 1, 1] [2023-08-24 13:47:36,333 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 13:47:36,333 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 13:47:36,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:47:36 BasicIcfg [2023-08-24 13:47:36,335 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 13:47:36,335 INFO L158 Benchmark]: Toolchain (without parser) took 864112.15ms. Allocated memory was 348.1MB in the beginning and 12.2GB in the end (delta: 11.9GB). Free memory was 324.5MB in the beginning and 7.1GB in the end (delta: -6.8GB). Peak memory consumption was 5.1GB. Max. memory is 16.0GB. [2023-08-24 13:47:36,335 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 324.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 13:47:36,336 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.04ms. Allocated memory is still 348.1MB. Free memory was 324.0MB in the beginning and 312.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 13:47:36,336 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.92ms. Allocated memory is still 348.1MB. Free memory was 312.2MB in the beginning and 310.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:47:36,336 INFO L158 Benchmark]: Boogie Preprocessor took 18.40ms. Allocated memory is still 348.1MB. Free memory was 310.6MB in the beginning and 309.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 13:47:36,336 INFO L158 Benchmark]: RCFGBuilder took 316.71ms. Allocated memory is still 348.1MB. Free memory was 308.5MB in the beginning and 291.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 13:47:36,336 INFO L158 Benchmark]: TraceAbstraction took 863526.96ms. Allocated memory was 348.1MB in the beginning and 12.2GB in the end (delta: 11.9GB). Free memory was 290.2MB in the beginning and 7.1GB in the end (delta: -6.8GB). Peak memory consumption was 5.1GB. Max. memory is 16.0GB. [2023-08-24 13:47:36,337 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 324.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 222.04ms. Allocated memory is still 348.1MB. Free memory was 324.0MB in the beginning and 312.2MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 22.92ms. Allocated memory is still 348.1MB. Free memory was 312.2MB in the beginning and 310.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.40ms. Allocated memory is still 348.1MB. Free memory was 310.6MB in the beginning and 309.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 316.71ms. Allocated memory is still 348.1MB. Free memory was 308.5MB in the beginning and 291.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 863526.96ms. Allocated memory was 348.1MB in the beginning and 12.2GB in the end (delta: 11.9GB). Free memory was 290.2MB in the beginning and 7.1GB in the end (delta: -6.8GB). Peak memory consumption was 5.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 152 PlacesBefore, 50 PlacesAfterwards, 147 TransitionsBefore, 37 TransitionsAfterwards, 2916 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 12 ConcurrentYvCompositions, 8 ChoiceCompositions, 126 TotalNumberOfCompositions, 3523 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3523, independent: 3523, independent conditional: 0, independent unconditional: 3523, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1562, independent: 1562, independent conditional: 0, independent unconditional: 1562, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3523, independent: 1961, independent conditional: 0, independent unconditional: 1961, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1562, unknown conditional: 0, unknown unconditional: 1562] , Statistics on independence cache: Total cache size (in pairs): 147, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 192 locations, 7 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: 863.4s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 502.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 63 mSolverCounterUnknown, 2046 SdHoareTripleChecker+Valid, 269.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2046 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 266.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 156 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7445 IncrementalHoareTripleChecker+Invalid, 7665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 156 mSolverCounterUnsat, 0 mSDtfsCounter, 7445 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 683 GetRequests, 513 SyntacticMatches, 15 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 411.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7873occurred in iteration=17, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 349.3s InterpolantComputationTime, 873 NumberOfCodeBlocks, 873 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1130 ConstructedInterpolants, 0 QuantifiedInterpolants, 38442 SizeOfPredicates, 48 NumberOfNonLiveVariables, 2877 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 36 InterpolantComputations, 9 PerfectInterpolantSequences, 8/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown