/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:20:50,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:20:50,280 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-SemanticLbe.epf [2023-11-17 12:20:50,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:20:50,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:20:50,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:20:50,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:20:50,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:20:50,308 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:20:50,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:20:50,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:20:50,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:20:50,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:20:50,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:20:50,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:20:50,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:20:50,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:20:50,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:20:50,314 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:20:50,314 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:20:50,314 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:20:50,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:20:50,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:20:50,315 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:20:50,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:20:50,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:20:50,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:20:50,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:20:50,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:20:50,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:20:50,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:20:50,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:20:50,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:20:50,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:20:50,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:20:50,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:20:50,555 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:20:50,556 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:20:50,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-17 12:20:51,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:20:51,924 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:20:51,924 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2023-11-17 12:20:51,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c37ef11ae/4e667209bd784aaba73a72752ca93363/FLAGb3a0feb77 [2023-11-17 12:20:51,941 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c37ef11ae/4e667209bd784aaba73a72752ca93363 [2023-11-17 12:20:51,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:20:51,944 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:20:51,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:20:51,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:20:51,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:20:51,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:20:51" (1/1) ... [2023-11-17 12:20:51,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743289ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:51, skipping insertion in model container [2023-11-17 12:20:51,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:20:51" (1/1) ... [2023-11-17 12:20:51,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:20:52,136 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/popl20-more-buffer-mult2.wvr.c[4151,4164] [2023-11-17 12:20:52,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:20:52,165 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:20:52,185 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/popl20-more-buffer-mult2.wvr.c[4151,4164] [2023-11-17 12:20:52,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:20:52,195 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:20:52,195 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:20:52,200 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:20:52,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52 WrapperNode [2023-11-17 12:20:52,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:20:52,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:20:52,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:20:52,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:20:52,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,239 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 316 [2023-11-17 12:20:52,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:20:52,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:20:52,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:20:52,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:20:52,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:20:52,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:20:52,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:20:52,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:20:52,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (1/1) ... [2023-11-17 12:20:52,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:20:52,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:20:52,300 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) [2023-11-17 12:20:52,316 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 [2023-11-17 12:20:52,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:20:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:20:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:20:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:20:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:20:52,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:20:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:20:52,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:20:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:20:52,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:20:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 12:20:52,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 12:20:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:20:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:20:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:20:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:20:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:20:52,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:20:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:20:52,335 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:20:52,472 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:20:52,474 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:20:52,777 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:20:53,087 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:20:53,087 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 12:20:53,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:20:53 BoogieIcfgContainer [2023-11-17 12:20:53,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:20:53,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:20:53,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:20:53,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:20:53,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:20:51" (1/3) ... [2023-11-17 12:20:53,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef0147a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:20:53, skipping insertion in model container [2023-11-17 12:20:53,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:20:52" (2/3) ... [2023-11-17 12:20:53,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef0147a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:20:53, skipping insertion in model container [2023-11-17 12:20:53,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:20:53" (3/3) ... [2023-11-17 12:20:53,095 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2023-11-17 12:20:53,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:20:53,108 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:20:53,108 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:20:53,158 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 12:20:53,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 51 transitions, 130 flow [2023-11-17 12:20:53,218 INFO L124 PetriNetUnfolderBase]: 6/47 cut-off events. [2023-11-17 12:20:53,219 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:20:53,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 47 events. 6/47 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-17 12:20:53,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 51 transitions, 130 flow [2023-11-17 12:20:53,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 46 transitions, 116 flow [2023-11-17 12:20:53,228 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:20:53,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 46 transitions, 116 flow [2023-11-17 12:20:53,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 46 transitions, 116 flow [2023-11-17 12:20:53,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 46 transitions, 116 flow [2023-11-17 12:20:53,261 INFO L124 PetriNetUnfolderBase]: 6/46 cut-off events. [2023-11-17 12:20:53,261 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:20:53,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 6/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-17 12:20:53,262 INFO L119 LiptonReduction]: Number of co-enabled transitions 768 [2023-11-17 12:20:54,030 INFO L134 LiptonReduction]: Checked pairs total: 1011 [2023-11-17 12:20:54,030 INFO L136 LiptonReduction]: Total number of compositions: 11 [2023-11-17 12:20:54,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:20:54,052 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=LoopHeads, 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;@2ac6e755, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:20:54,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 12:20:54,064 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:20:54,064 INFO L124 PetriNetUnfolderBase]: 6/34 cut-off events. [2023-11-17 12:20:54,064 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:20:54,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:20:54,065 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] [2023-11-17 12:20:54,065 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 2 more)] === [2023-11-17 12:20:54,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:20:54,068 INFO L85 PathProgramCache]: Analyzing trace with hash -730059068, now seen corresponding path program 1 times [2023-11-17 12:20:54,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:20:54,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36543546] [2023-11-17 12:20:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:20:54,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:20:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:20:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:20:54,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:20:54,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36543546] [2023-11-17 12:20:54,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36543546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:20:54,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:20:54,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:20:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325079806] [2023-11-17 12:20:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:20:54,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:20:54,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:20:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:20:54,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:20:54,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-17 12:20:54,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:54,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:20:54,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-17 12:20:54,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:20:54,778 INFO L124 PetriNetUnfolderBase]: 1994/2770 cut-off events. [2023-11-17 12:20:54,778 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2023-11-17 12:20:54,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5544 conditions, 2770 events. 1994/2770 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10590 event pairs, 624 based on Foata normal form. 1/2025 useless extension candidates. Maximal degree in co-relation 4188. Up to 1445 conditions per place. [2023-11-17 12:20:54,793 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 51 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2023-11-17 12:20:54,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 263 flow [2023-11-17 12:20:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:20:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:20:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-17 12:20:54,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6397849462365591 [2023-11-17 12:20:54,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-17 12:20:54,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-17 12:20:54,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:20:54,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-17 12:20:54,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:54,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:54,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:54,813 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 94 flow. Second operand 3 states and 119 transitions. [2023-11-17 12:20:54,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 263 flow [2023-11-17 12:20:54,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 57 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 12:20:54,819 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 97 flow [2023-11-17 12:20:54,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-11-17 12:20:54,823 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-11-17 12:20:54,823 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 97 flow [2023-11-17 12:20:54,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:54,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:20:54,824 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] [2023-11-17 12:20:54,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:20:54,824 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 2 more)] === [2023-11-17 12:20:54,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:20:54,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1809050274, now seen corresponding path program 1 times [2023-11-17 12:20:54,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:20:54,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599120357] [2023-11-17 12:20:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:20:54,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:20:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:20:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:20:54,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:20:54,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599120357] [2023-11-17 12:20:54,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599120357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:20:54,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:20:54,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:20:54,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805739095] [2023-11-17 12:20:54,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:20:54,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:20:54,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:20:54,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:20:54,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:20:54,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2023-11-17 12:20:54,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:54,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:20:54,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2023-11-17 12:20:54,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:20:55,339 INFO L124 PetriNetUnfolderBase]: 3074/4117 cut-off events. [2023-11-17 12:20:55,339 INFO L125 PetriNetUnfolderBase]: For 611/611 co-relation queries the response was YES. [2023-11-17 12:20:55,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9061 conditions, 4117 events. 3074/4117 cut-off events. For 611/611 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16238 event pairs, 1168 based on Foata normal form. 134/3611 useless extension candidates. Maximal degree in co-relation 3820. Up to 2266 conditions per place. [2023-11-17 12:20:55,357 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 58 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-17 12:20:55,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 278 flow [2023-11-17 12:20:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:20:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:20:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-17 12:20:55,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6182795698924731 [2023-11-17 12:20:55,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-17 12:20:55,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-17 12:20:55,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:20:55,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-17 12:20:55,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:55,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:55,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:55,361 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 97 flow. Second operand 3 states and 115 transitions. [2023-11-17 12:20:55,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 278 flow [2023-11-17 12:20:55,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 61 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:20:55,362 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 108 flow [2023-11-17 12:20:55,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-11-17 12:20:55,363 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-11-17 12:20:55,363 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 108 flow [2023-11-17 12:20:55,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:55,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:20:55,363 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] [2023-11-17 12:20:55,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:20:55,364 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 2 more)] === [2023-11-17 12:20:55,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:20:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash -632088145, now seen corresponding path program 1 times [2023-11-17 12:20:55,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:20:55,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581969161] [2023-11-17 12:20:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:20:55,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:20:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:20:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:20:55,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:20:55,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581969161] [2023-11-17 12:20:55,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581969161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:20:55,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:20:55,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:20:55,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824101115] [2023-11-17 12:20:55,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:20:55,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:20:55,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:20:55,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:20:55,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:20:55,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 62 [2023-11-17 12:20:55,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:55,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:20:55,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 62 [2023-11-17 12:20:55,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:20:55,791 INFO L124 PetriNetUnfolderBase]: 4210/5763 cut-off events. [2023-11-17 12:20:55,792 INFO L125 PetriNetUnfolderBase]: For 1606/1606 co-relation queries the response was YES. [2023-11-17 12:20:55,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13138 conditions, 5763 events. 4210/5763 cut-off events. For 1606/1606 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 24474 event pairs, 1600 based on Foata normal form. 198/5519 useless extension candidates. Maximal degree in co-relation 7128. Up to 3501 conditions per place. [2023-11-17 12:20:55,869 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 62 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-17 12:20:55,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 312 flow [2023-11-17 12:20:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:20:55,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:20:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-11-17 12:20:55,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6290322580645161 [2023-11-17 12:20:55,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-11-17 12:20:55,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-11-17 12:20:55,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:20:55,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-11-17 12:20:55,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:55,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:55,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:55,876 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 108 flow. Second operand 3 states and 117 transitions. [2023-11-17 12:20:55,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 312 flow [2023-11-17 12:20:55,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 65 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:20:55,878 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 120 flow [2023-11-17 12:20:55,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-11-17 12:20:55,880 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-11-17 12:20:55,880 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 120 flow [2023-11-17 12:20:55,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:55,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:20:55,880 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] [2023-11-17 12:20:55,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:20:55,880 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 2 more)] === [2023-11-17 12:20:55,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:20:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1101186806, now seen corresponding path program 1 times [2023-11-17 12:20:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:20:55,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438068568] [2023-11-17 12:20:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:20:55,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:20:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:20:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:20:56,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:20:56,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438068568] [2023-11-17 12:20:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438068568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:20:56,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:20:56,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:20:56,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64016673] [2023-11-17 12:20:56,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:20:56,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:20:56,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:20:56,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:20:56,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:20:56,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-17 12:20:56,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:56,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:20:56,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-17 12:20:56,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:20:56,554 INFO L124 PetriNetUnfolderBase]: 5540/7805 cut-off events. [2023-11-17 12:20:56,554 INFO L125 PetriNetUnfolderBase]: For 3059/3059 co-relation queries the response was YES. [2023-11-17 12:20:56,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18259 conditions, 7805 events. 5540/7805 cut-off events. For 3059/3059 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 36526 event pairs, 4490 based on Foata normal form. 210/7928 useless extension candidates. Maximal degree in co-relation 11220. Up to 5248 conditions per place. [2023-11-17 12:20:56,584 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 64 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-17 12:20:56,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 69 transitions, 337 flow [2023-11-17 12:20:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:20:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:20:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2023-11-17 12:20:56,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2023-11-17 12:20:56,585 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 146 transitions. [2023-11-17 12:20:56,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 146 transitions. [2023-11-17 12:20:56,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:20:56,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 146 transitions. [2023-11-17 12:20:56,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:56,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:56,586 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:56,587 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 120 flow. Second operand 4 states and 146 transitions. [2023-11-17 12:20:56,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 69 transitions, 337 flow [2023-11-17 12:20:56,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:20:56,589 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 138 flow [2023-11-17 12:20:56,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-11-17 12:20:56,590 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-11-17 12:20:56,590 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 138 flow [2023-11-17 12:20:56,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:56,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:20:56,590 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] [2023-11-17 12:20:56,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:20:56,590 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 2 more)] === [2023-11-17 12:20:56,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:20:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1965408824, now seen corresponding path program 1 times [2023-11-17 12:20:56,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:20:56,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695017293] [2023-11-17 12:20:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:20:56,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:20:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:20:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:20:56,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:20:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695017293] [2023-11-17 12:20:56,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695017293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:20:56,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:20:56,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:20:56,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128474655] [2023-11-17 12:20:56,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:20:56,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:20:56,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:20:56,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:20:56,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:20:56,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2023-11-17 12:20:56,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:56,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:20:56,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2023-11-17 12:20:56,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:20:57,444 INFO L124 PetriNetUnfolderBase]: 7721/11018 cut-off events. [2023-11-17 12:20:57,445 INFO L125 PetriNetUnfolderBase]: For 4220/4220 co-relation queries the response was YES. [2023-11-17 12:20:57,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25280 conditions, 11018 events. 7721/11018 cut-off events. For 4220/4220 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 55301 event pairs, 6468 based on Foata normal form. 236/11188 useless extension candidates. Maximal degree in co-relation 16962. Up to 7626 conditions per place. [2023-11-17 12:20:57,483 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 68 selfloop transitions, 4 changer transitions 1/75 dead transitions. [2023-11-17 12:20:57,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 390 flow [2023-11-17 12:20:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:20:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:20:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2023-11-17 12:20:57,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516129032258065 [2023-11-17 12:20:57,485 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 171 transitions. [2023-11-17 12:20:57,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 171 transitions. [2023-11-17 12:20:57,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:20:57,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 171 transitions. [2023-11-17 12:20:57,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:57,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:57,486 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 62.0) internal successors, (372), 6 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:57,486 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 138 flow. Second operand 5 states and 171 transitions. [2023-11-17 12:20:57,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 390 flow [2023-11-17 12:20:57,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 382 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 12:20:57,489 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 166 flow [2023-11-17 12:20:57,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-11-17 12:20:57,489 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-11-17 12:20:57,489 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 166 flow [2023-11-17 12:20:57,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:57,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:20:57,490 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] [2023-11-17 12:20:57,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:20:57,490 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 2 more)] === [2023-11-17 12:20:57,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:20:57,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1212886441, now seen corresponding path program 1 times [2023-11-17 12:20:57,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:20:57,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181400325] [2023-11-17 12:20:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:20:57,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:20:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:20:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:20:57,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:20:57,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181400325] [2023-11-17 12:20:57,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181400325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:20:57,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:20:57,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:20:57,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788616150] [2023-11-17 12:20:57,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:20:57,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:20:57,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:20:57,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:20:57,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:20:57,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2023-11-17 12:20:57,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:57,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:20:57,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2023-11-17 12:20:57,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:20:58,817 INFO L124 PetriNetUnfolderBase]: 9139/12975 cut-off events. [2023-11-17 12:20:58,817 INFO L125 PetriNetUnfolderBase]: For 4105/4105 co-relation queries the response was YES. [2023-11-17 12:20:58,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30114 conditions, 12975 events. 9139/12975 cut-off events. For 4105/4105 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 68870 event pairs, 1574 based on Foata normal form. 248/13221 useless extension candidates. Maximal degree in co-relation 22780. Up to 8084 conditions per place. [2023-11-17 12:20:58,855 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 100 selfloop transitions, 7 changer transitions 27/134 dead transitions. [2023-11-17 12:20:58,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 134 transitions, 665 flow [2023-11-17 12:20:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:20:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:20:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2023-11-17 12:20:58,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2023-11-17 12:20:58,856 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 203 transitions. [2023-11-17 12:20:58,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 203 transitions. [2023-11-17 12:20:58,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:20:58,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 203 transitions. [2023-11-17 12:20:58,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:58,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:58,858 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:58,858 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 166 flow. Second operand 7 states and 203 transitions. [2023-11-17 12:20:58,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 134 transitions, 665 flow [2023-11-17 12:20:58,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 134 transitions, 661 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 12:20:58,861 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 226 flow [2023-11-17 12:20:58,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-11-17 12:20:58,862 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-11-17 12:20:58,862 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 226 flow [2023-11-17 12:20:58,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:58,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:20:58,862 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] [2023-11-17 12:20:58,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:20:58,863 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 2 more)] === [2023-11-17 12:20:58,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:20:58,863 INFO L85 PathProgramCache]: Analyzing trace with hash -684691363, now seen corresponding path program 1 times [2023-11-17 12:20:58,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:20:58,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192715796] [2023-11-17 12:20:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:20:58,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:20:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:20:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:20:59,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:20:59,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192715796] [2023-11-17 12:20:59,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192715796] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:20:59,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206871108] [2023-11-17 12:20:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:20:59,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:20:59,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:20:59,219 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) [2023-11-17 12:20:59,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 12:20:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:20:59,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 12:20:59,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:20:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:20:59,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:20:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:20:59,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206871108] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:20:59,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:20:59,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 17 [2023-11-17 12:20:59,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208733973] [2023-11-17 12:20:59,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:20:59,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 12:20:59,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:20:59,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 12:20:59,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-11-17 12:20:59,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2023-11-17 12:20:59,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 226 flow. Second operand has 18 states, 18 states have (on average 14.055555555555555) internal successors, (253), 18 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:20:59,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:20:59,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2023-11-17 12:20:59,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:01,134 INFO L124 PetriNetUnfolderBase]: 9187/13236 cut-off events. [2023-11-17 12:21:01,134 INFO L125 PetriNetUnfolderBase]: For 10183/10183 co-relation queries the response was YES. [2023-11-17 12:21:01,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34705 conditions, 13236 events. 9187/13236 cut-off events. For 10183/10183 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 72890 event pairs, 1459 based on Foata normal form. 120/13354 useless extension candidates. Maximal degree in co-relation 29556. Up to 6099 conditions per place. [2023-11-17 12:21:01,197 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 106 selfloop transitions, 18 changer transitions 75/199 dead transitions. [2023-11-17 12:21:01,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 199 transitions, 1114 flow [2023-11-17 12:21:01,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:21:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:21:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 306 transitions. [2023-11-17 12:21:01,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2023-11-17 12:21:01,203 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 306 transitions. [2023-11-17 12:21:01,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 306 transitions. [2023-11-17 12:21:01,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:01,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 306 transitions. [2023-11-17 12:21:01,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 25.5) internal successors, (306), 12 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:01,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 62.0) internal successors, (806), 13 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) [2023-11-17 12:21:01,206 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 62.0) internal successors, (806), 13 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) [2023-11-17 12:21:01,206 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 226 flow. Second operand 12 states and 306 transitions. [2023-11-17 12:21:01,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 199 transitions, 1114 flow [2023-11-17 12:21:01,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 199 transitions, 1100 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-17 12:21:01,240 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 368 flow [2023-11-17 12:21:01,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=368, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2023-11-17 12:21:01,241 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2023-11-17 12:21:01,242 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 368 flow [2023-11-17 12:21:01,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.055555555555555) internal successors, (253), 18 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:01,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:01,242 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] [2023-11-17 12:21:01,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 12:21:01,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:01,450 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 2 more)] === [2023-11-17 12:21:01,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1638514177, now seen corresponding path program 2 times [2023-11-17 12:21:01,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:01,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178798927] [2023-11-17 12:21:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:01,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:01,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178798927] [2023-11-17 12:21:01,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178798927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:01,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:01,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:01,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518518661] [2023-11-17 12:21:01,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:01,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:01,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:01,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:01,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:01,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2023-11-17 12:21:01,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:01,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:01,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2023-11-17 12:21:01,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:03,242 INFO L124 PetriNetUnfolderBase]: 11232/15853 cut-off events. [2023-11-17 12:21:03,243 INFO L125 PetriNetUnfolderBase]: For 24784/24784 co-relation queries the response was YES. [2023-11-17 12:21:03,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50674 conditions, 15853 events. 11232/15853 cut-off events. For 24784/24784 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 84214 event pairs, 2923 based on Foata normal form. 140/15991 useless extension candidates. Maximal degree in co-relation 43725. Up to 8108 conditions per place. [2023-11-17 12:21:03,293 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 131 selfloop transitions, 26 changer transitions 13/170 dead transitions. [2023-11-17 12:21:03,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 170 transitions, 1209 flow [2023-11-17 12:21:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:21:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:21:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2023-11-17 12:21:03,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2023-11-17 12:21:03,294 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 222 transitions. [2023-11-17 12:21:03,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 222 transitions. [2023-11-17 12:21:03,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:03,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 222 transitions. [2023-11-17 12:21:03,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:03,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:03,296 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:03,296 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 368 flow. Second operand 8 states and 222 transitions. [2023-11-17 12:21:03,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 170 transitions, 1209 flow [2023-11-17 12:21:03,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 170 transitions, 1177 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-17 12:21:03,362 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 535 flow [2023-11-17 12:21:03,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=535, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2023-11-17 12:21:03,364 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2023-11-17 12:21:03,364 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 535 flow [2023-11-17 12:21:03,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:03,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:03,364 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] [2023-11-17 12:21:03,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:21:03,365 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 2 more)] === [2023-11-17 12:21:03,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash 954433259, now seen corresponding path program 3 times [2023-11-17 12:21:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:03,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394810677] [2023-11-17 12:21:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:03,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:03,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:03,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394810677] [2023-11-17 12:21:03,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394810677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:03,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:03,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:03,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614485117] [2023-11-17 12:21:03,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:03,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:03,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:03,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2023-11-17 12:21:03,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 535 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:03,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:03,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2023-11-17 12:21:03,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:05,077 INFO L124 PetriNetUnfolderBase]: 11436/16321 cut-off events. [2023-11-17 12:21:05,077 INFO L125 PetriNetUnfolderBase]: For 33550/33550 co-relation queries the response was YES. [2023-11-17 12:21:05,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58112 conditions, 16321 events. 11436/16321 cut-off events. For 33550/33550 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 88007 event pairs, 4465 based on Foata normal form. 44/16363 useless extension candidates. Maximal degree in co-relation 50116. Up to 13361 conditions per place. [2023-11-17 12:21:05,147 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 79 selfloop transitions, 38 changer transitions 48/165 dead transitions. [2023-11-17 12:21:05,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 165 transitions, 1487 flow [2023-11-17 12:21:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:21:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:21:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2023-11-17 12:21:05,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42626728110599077 [2023-11-17 12:21:05,148 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 185 transitions. [2023-11-17 12:21:05,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 185 transitions. [2023-11-17 12:21:05,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:05,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 185 transitions. [2023-11-17 12:21:05,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.428571428571427) internal successors, (185), 7 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:05,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:05,149 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:05,149 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 535 flow. Second operand 7 states and 185 transitions. [2023-11-17 12:21:05,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 165 transitions, 1487 flow [2023-11-17 12:21:05,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 165 transitions, 1395 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 12:21:05,223 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 811 flow [2023-11-17 12:21:05,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=811, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2023-11-17 12:21:05,224 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2023-11-17 12:21:05,224 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 811 flow [2023-11-17 12:21:05,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:05,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:05,225 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] [2023-11-17 12:21:05,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 12:21:05,225 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 2 more)] === [2023-11-17 12:21:05,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 812216051, now seen corresponding path program 4 times [2023-11-17 12:21:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:05,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120826155] [2023-11-17 12:21:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:05,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:05,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120826155] [2023-11-17 12:21:05,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120826155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:05,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419425374] [2023-11-17 12:21:05,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:21:05,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:05,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:05,578 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) [2023-11-17 12:21:05,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 12:21:05,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:21:05,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:21:05,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 12:21:05,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:21:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:21:06,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:21:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:21:06,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419425374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:21:06,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:21:06,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-17 12:21:06,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722114094] [2023-11-17 12:21:06,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:21:06,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 12:21:06,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:06,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 12:21:06,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-11-17 12:21:06,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 62 [2023-11-17 12:21:06,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 811 flow. Second operand has 20 states, 20 states have (on average 12.85) internal successors, (257), 20 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:06,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:06,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 62 [2023-11-17 12:21:06,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:12,074 INFO L124 PetriNetUnfolderBase]: 26905/38316 cut-off events. [2023-11-17 12:21:12,074 INFO L125 PetriNetUnfolderBase]: For 87634/87634 co-relation queries the response was YES. [2023-11-17 12:21:12,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138036 conditions, 38316 events. 26905/38316 cut-off events. For 87634/87634 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 237996 event pairs, 2708 based on Foata normal form. 1946/40260 useless extension candidates. Maximal degree in co-relation 134632. Up to 6925 conditions per place. [2023-11-17 12:21:12,274 INFO L140 encePairwiseOnDemand]: 46/62 looper letters, 444 selfloop transitions, 191 changer transitions 33/668 dead transitions. [2023-11-17 12:21:12,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 668 transitions, 5182 flow [2023-11-17 12:21:12,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 12:21:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 12:21:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 833 transitions. [2023-11-17 12:21:12,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071358748778104 [2023-11-17 12:21:12,277 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 833 transitions. [2023-11-17 12:21:12,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 833 transitions. [2023-11-17 12:21:12,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:12,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 833 transitions. [2023-11-17 12:21:12,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 25.242424242424242) internal successors, (833), 33 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:12,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 62.0) internal successors, (2108), 34 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:12,281 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 62.0) internal successors, (2108), 34 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:12,281 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 811 flow. Second operand 33 states and 833 transitions. [2023-11-17 12:21:12,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 668 transitions, 5182 flow [2023-11-17 12:21:12,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 668 transitions, 5053 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-11-17 12:21:12,557 INFO L231 Difference]: Finished difference. Result has 144 places, 253 transitions, 2904 flow [2023-11-17 12:21:12,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2904, PETRI_PLACES=144, PETRI_TRANSITIONS=253} [2023-11-17 12:21:12,557 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2023-11-17 12:21:12,557 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 253 transitions, 2904 flow [2023-11-17 12:21:12,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.85) internal successors, (257), 20 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:12,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:12,558 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] [2023-11-17 12:21:12,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-17 12:21:12,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-17 12:21:12,763 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 2 more)] === [2023-11-17 12:21:12,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:12,764 INFO L85 PathProgramCache]: Analyzing trace with hash -8573537, now seen corresponding path program 5 times [2023-11-17 12:21:12,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:12,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8974037] [2023-11-17 12:21:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:12,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:13,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:13,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8974037] [2023-11-17 12:21:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8974037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:13,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:13,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:13,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606124766] [2023-11-17 12:21:13,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:13,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:13,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:13,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:13,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:13,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2023-11-17 12:21:13,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 253 transitions, 2904 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:13,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:13,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2023-11-17 12:21:13,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:19,814 INFO L124 PetriNetUnfolderBase]: 31969/46080 cut-off events. [2023-11-17 12:21:19,814 INFO L125 PetriNetUnfolderBase]: For 654670/654670 co-relation queries the response was YES. [2023-11-17 12:21:20,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289673 conditions, 46080 events. 31969/46080 cut-off events. For 654670/654670 co-relation queries the response was YES. Maximal size of possible extension queue 1636. Compared 297991 event pairs, 11867 based on Foata normal form. 60/46138 useless extension candidates. Maximal degree in co-relation 236188. Up to 33703 conditions per place. [2023-11-17 12:21:20,534 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 293 selfloop transitions, 104 changer transitions 26/423 dead transitions. [2023-11-17 12:21:20,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 423 transitions, 5113 flow [2023-11-17 12:21:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 12:21:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 12:21:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2023-11-17 12:21:20,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2023-11-17 12:21:20,536 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 236 transitions. [2023-11-17 12:21:20,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 236 transitions. [2023-11-17 12:21:20,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:20,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 236 transitions. [2023-11-17 12:21:20,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,538 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:20,538 INFO L175 Difference]: Start difference. First operand has 144 places, 253 transitions, 2904 flow. Second operand 9 states and 236 transitions. [2023-11-17 12:21:20,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 423 transitions, 5113 flow [2023-11-17 12:21:24,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 423 transitions, 4577 flow, removed 164 selfloop flow, removed 6 redundant places. [2023-11-17 12:21:24,018 INFO L231 Difference]: Finished difference. Result has 150 places, 272 transitions, 3005 flow [2023-11-17 12:21:24,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3005, PETRI_PLACES=150, PETRI_TRANSITIONS=272} [2023-11-17 12:21:24,019 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2023-11-17 12:21:24,019 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 272 transitions, 3005 flow [2023-11-17 12:21:24,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:24,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:24,019 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] [2023-11-17 12:21:24,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 12:21:24,020 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 2 more)] === [2023-11-17 12:21:24,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:24,020 INFO L85 PathProgramCache]: Analyzing trace with hash 118406329, now seen corresponding path program 6 times [2023-11-17 12:21:24,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:24,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057862944] [2023-11-17 12:21:24,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:24,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:24,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:24,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057862944] [2023-11-17 12:21:24,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057862944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:24,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:24,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:21:24,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032832806] [2023-11-17 12:21:24,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:24,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:21:24,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:24,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:21:24,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:21:24,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2023-11-17 12:21:24,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 272 transitions, 3005 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:24,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:24,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2023-11-17 12:21:24,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:31,722 INFO L124 PetriNetUnfolderBase]: 36534/53113 cut-off events. [2023-11-17 12:21:31,722 INFO L125 PetriNetUnfolderBase]: For 792059/792059 co-relation queries the response was YES. [2023-11-17 12:21:32,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330829 conditions, 53113 events. 36534/53113 cut-off events. For 792059/792059 co-relation queries the response was YES. Maximal size of possible extension queue 1931. Compared 359887 event pairs, 11243 based on Foata normal form. 244/53355 useless extension candidates. Maximal degree in co-relation 293502. Up to 32543 conditions per place. [2023-11-17 12:21:32,348 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 314 selfloop transitions, 92 changer transitions 16/422 dead transitions. [2023-11-17 12:21:32,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 422 transitions, 5556 flow [2023-11-17 12:21:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:32,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2023-11-17 12:21:32,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2023-11-17 12:21:32,349 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 177 transitions. [2023-11-17 12:21:32,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 177 transitions. [2023-11-17 12:21:32,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:32,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 177 transitions. [2023-11-17 12:21:32,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.5) internal successors, (177), 6 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:32,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:32,350 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:32,350 INFO L175 Difference]: Start difference. First operand has 150 places, 272 transitions, 3005 flow. Second operand 6 states and 177 transitions. [2023-11-17 12:21:32,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 422 transitions, 5556 flow [2023-11-17 12:21:36,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 422 transitions, 5468 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-11-17 12:21:36,742 INFO L231 Difference]: Finished difference. Result has 157 places, 309 transitions, 3824 flow [2023-11-17 12:21:36,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2937, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3824, PETRI_PLACES=157, PETRI_TRANSITIONS=309} [2023-11-17 12:21:36,743 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2023-11-17 12:21:36,744 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 309 transitions, 3824 flow [2023-11-17 12:21:36,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:36,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:36,744 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] [2023-11-17 12:21:36,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 12:21:36,744 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 2 more)] === [2023-11-17 12:21:36,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:36,744 INFO L85 PathProgramCache]: Analyzing trace with hash 291358183, now seen corresponding path program 7 times [2023-11-17 12:21:36,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:36,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704830827] [2023-11-17 12:21:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:36,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:36,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:36,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704830827] [2023-11-17 12:21:36,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704830827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:36,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:36,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:36,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933125545] [2023-11-17 12:21:36,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:36,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:36,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:36,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:36,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:36,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2023-11-17 12:21:36,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 309 transitions, 3824 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:36,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:36,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2023-11-17 12:21:36,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:44,271 INFO L124 PetriNetUnfolderBase]: 36976/53991 cut-off events. [2023-11-17 12:21:44,272 INFO L125 PetriNetUnfolderBase]: For 873508/873508 co-relation queries the response was YES. [2023-11-17 12:21:44,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351615 conditions, 53991 events. 36976/53991 cut-off events. For 873508/873508 co-relation queries the response was YES. Maximal size of possible extension queue 1987. Compared 367853 event pairs, 15904 based on Foata normal form. 112/54101 useless extension candidates. Maximal degree in co-relation 313064. Up to 47771 conditions per place. [2023-11-17 12:21:44,951 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 247 selfloop transitions, 110 changer transitions 33/390 dead transitions. [2023-11-17 12:21:44,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 390 transitions, 5201 flow [2023-11-17 12:21:44,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:21:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:21:44,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2023-11-17 12:21:44,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43317972350230416 [2023-11-17 12:21:44,953 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 188 transitions. [2023-11-17 12:21:44,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 188 transitions. [2023-11-17 12:21:44,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:44,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 188 transitions. [2023-11-17 12:21:44,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:44,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:44,954 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 62.0) internal successors, (496), 8 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:44,954 INFO L175 Difference]: Start difference. First operand has 157 places, 309 transitions, 3824 flow. Second operand 7 states and 188 transitions. [2023-11-17 12:21:44,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 390 transitions, 5201 flow [2023-11-17 12:21:49,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 390 transitions, 5079 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-17 12:21:49,850 INFO L231 Difference]: Finished difference. Result has 163 places, 309 transitions, 3953 flow [2023-11-17 12:21:49,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3710, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3953, PETRI_PLACES=163, PETRI_TRANSITIONS=309} [2023-11-17 12:21:49,851 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2023-11-17 12:21:49,851 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 309 transitions, 3953 flow [2023-11-17 12:21:49,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:49,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:49,851 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] [2023-11-17 12:21:49,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 12:21:49,851 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 2 more)] === [2023-11-17 12:21:49,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1927411187, now seen corresponding path program 8 times [2023-11-17 12:21:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251653557] [2023-11-17 12:21:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:21:50,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:50,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251653557] [2023-11-17 12:21:50,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251653557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:21:50,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:21:50,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:21:50,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651343449] [2023-11-17 12:21:50,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:21:50,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:21:50,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:50,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:21:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:21:50,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2023-11-17 12:21:50,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 309 transitions, 3953 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:50,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:50,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2023-11-17 12:21:50,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:57,092 INFO L124 PetriNetUnfolderBase]: 34869/50732 cut-off events. [2023-11-17 12:21:57,092 INFO L125 PetriNetUnfolderBase]: For 829996/829996 co-relation queries the response was YES. [2023-11-17 12:21:57,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328068 conditions, 50732 events. 34869/50732 cut-off events. For 829996/829996 co-relation queries the response was YES. Maximal size of possible extension queue 1844. Compared 339842 event pairs, 13765 based on Foata normal form. 728/51458 useless extension candidates. Maximal degree in co-relation 313317. Up to 43999 conditions per place. [2023-11-17 12:21:57,578 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 241 selfloop transitions, 133 changer transitions 12/386 dead transitions. [2023-11-17 12:21:57,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 386 transitions, 5420 flow [2023-11-17 12:21:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:21:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:21:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2023-11-17 12:21:57,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45698924731182794 [2023-11-17 12:21:57,579 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 170 transitions. [2023-11-17 12:21:57,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 170 transitions. [2023-11-17 12:21:57,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:57,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 170 transitions. [2023-11-17 12:21:57,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:57,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:57,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:21:57,580 INFO L175 Difference]: Start difference. First operand has 163 places, 309 transitions, 3953 flow. Second operand 6 states and 170 transitions. [2023-11-17 12:21:57,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 386 transitions, 5420 flow [2023-11-17 12:22:01,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 386 transitions, 5168 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-17 12:22:01,926 INFO L231 Difference]: Finished difference. Result has 163 places, 326 transitions, 4417 flow [2023-11-17 12:22:01,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3719, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4417, PETRI_PLACES=163, PETRI_TRANSITIONS=326} [2023-11-17 12:22:01,926 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2023-11-17 12:22:01,926 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 326 transitions, 4417 flow [2023-11-17 12:22:01,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:01,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:22:01,927 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] [2023-11-17 12:22:01,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 12:22:01,927 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 2 more)] === [2023-11-17 12:22:01,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:22:01,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2120667681, now seen corresponding path program 9 times [2023-11-17 12:22:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:22:01,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063377081] [2023-11-17 12:22:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:22:01,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:22:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:22:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:22:02,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:22:02,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063377081] [2023-11-17 12:22:02,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063377081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:22:02,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:22:02,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 12:22:02,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739625612] [2023-11-17 12:22:02,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:22:02,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:22:02,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:22:02,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:22:02,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:22:02,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2023-11-17 12:22:02,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 326 transitions, 4417 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:02,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:22:02,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2023-11-17 12:22:02,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:22:11,091 INFO L124 PetriNetUnfolderBase]: 41011/59892 cut-off events. [2023-11-17 12:22:11,092 INFO L125 PetriNetUnfolderBase]: For 933235/933235 co-relation queries the response was YES. [2023-11-17 12:22:11,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383403 conditions, 59892 events. 41011/59892 cut-off events. For 933235/933235 co-relation queries the response was YES. Maximal size of possible extension queue 2243. Compared 415499 event pairs, 13391 based on Foata normal form. 244/60134 useless extension candidates. Maximal degree in co-relation 355379. Up to 36791 conditions per place. [2023-11-17 12:22:11,948 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 386 selfloop transitions, 141 changer transitions 22/549 dead transitions. [2023-11-17 12:22:11,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 549 transitions, 7355 flow [2023-11-17 12:22:11,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 12:22:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 12:22:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 280 transitions. [2023-11-17 12:22:11,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2023-11-17 12:22:11,950 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 280 transitions. [2023-11-17 12:22:11,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 280 transitions. [2023-11-17 12:22:11,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:22:11,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 280 transitions. [2023-11-17 12:22:11,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 28.0) internal successors, (280), 10 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:11,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:11,952 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 62.0) internal successors, (682), 11 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:11,952 INFO L175 Difference]: Start difference. First operand has 163 places, 326 transitions, 4417 flow. Second operand 10 states and 280 transitions. [2023-11-17 12:22:11,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 549 transitions, 7355 flow [2023-11-17 12:22:17,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 549 transitions, 7213 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 12:22:17,885 INFO L231 Difference]: Finished difference. Result has 173 places, 346 transitions, 4944 flow [2023-11-17 12:22:17,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4143, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4944, PETRI_PLACES=173, PETRI_TRANSITIONS=346} [2023-11-17 12:22:17,886 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 131 predicate places. [2023-11-17 12:22:17,887 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 346 transitions, 4944 flow [2023-11-17 12:22:17,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:17,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:22:17,887 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] [2023-11-17 12:22:17,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 12:22:17,887 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 2 more)] === [2023-11-17 12:22:17,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:22:17,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1410631471, now seen corresponding path program 10 times [2023-11-17 12:22:17,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:22:17,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378854207] [2023-11-17 12:22:17,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:22:17,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:22:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:22:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:22:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:22:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378854207] [2023-11-17 12:22:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378854207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:22:18,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:22:18,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:22:18,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910210308] [2023-11-17 12:22:18,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:22:18,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:22:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:22:18,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:22:18,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:22:18,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 62 [2023-11-17 12:22:18,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 346 transitions, 4944 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:18,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:22:18,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 62 [2023-11-17 12:22:18,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:22:27,223 INFO L124 PetriNetUnfolderBase]: 40527/59190 cut-off events. [2023-11-17 12:22:27,223 INFO L125 PetriNetUnfolderBase]: For 1080154/1080154 co-relation queries the response was YES. [2023-11-17 12:22:27,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393384 conditions, 59190 events. 40527/59190 cut-off events. For 1080154/1080154 co-relation queries the response was YES. Maximal size of possible extension queue 2112. Compared 407105 event pairs, 14969 based on Foata normal form. 1168/60356 useless extension candidates. Maximal degree in co-relation 360442. Up to 43145 conditions per place. [2023-11-17 12:22:27,940 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 348 selfloop transitions, 176 changer transitions 11/535 dead transitions. [2023-11-17 12:22:27,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 535 transitions, 7698 flow [2023-11-17 12:22:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:22:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:22:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2023-11-17 12:22:27,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576612903225806 [2023-11-17 12:22:27,942 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 227 transitions. [2023-11-17 12:22:27,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 227 transitions. [2023-11-17 12:22:27,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:22:27,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 227 transitions. [2023-11-17 12:22:27,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.375) internal successors, (227), 8 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:27,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:27,943 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:27,943 INFO L175 Difference]: Start difference. First operand has 173 places, 346 transitions, 4944 flow. Second operand 8 states and 227 transitions. [2023-11-17 12:22:27,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 535 transitions, 7698 flow [2023-11-17 12:22:34,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 535 transitions, 7361 flow, removed 50 selfloop flow, removed 6 redundant places. [2023-11-17 12:22:34,199 INFO L231 Difference]: Finished difference. Result has 178 places, 380 transitions, 5785 flow [2023-11-17 12:22:34,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=4670, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5785, PETRI_PLACES=178, PETRI_TRANSITIONS=380} [2023-11-17 12:22:34,200 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 136 predicate places. [2023-11-17 12:22:34,200 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 380 transitions, 5785 flow [2023-11-17 12:22:34,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:22:34,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:22:34,200 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] [2023-11-17 12:22:34,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 12:22:34,200 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 2 more)] === [2023-11-17 12:22:34,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:22:34,201 INFO L85 PathProgramCache]: Analyzing trace with hash 502917425, now seen corresponding path program 11 times [2023-11-17 12:22:34,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:22:34,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580563979] [2023-11-17 12:22:34,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:22:34,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:22:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:22:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:22:34,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:22:34,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580563979] [2023-11-17 12:22:34,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580563979] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:22:34,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072220100] [2023-11-17 12:22:34,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:22:34,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:22:34,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:22:34,521 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) [2023-11-17 12:22:34,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process