/usr/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:20:38,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:20:38,550 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-NoLbe.epf [2023-11-10 12:20:38,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:20:38,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:20:38,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:20:38,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:20:38,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:20:38,568 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:20:38,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:20:38,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:20:38,569 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:20:38,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:20:38,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:20:38,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:20:38,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:20:38,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:20:38,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:20:38,570 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:20:38,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:20:38,571 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:20:38,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:20:38,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:20:38,572 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:20:38,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:20:38,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:20:38,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:20:38,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:20:38,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:20:38,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:20:38,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:20:38,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:20:38,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:20:38,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:20:38,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:20:38,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:20:38,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:20:38,772 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:20:38,773 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:20:38,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-11-10 12:20:39,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:20:40,014 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:20:40,015 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-11-10 12:20:40,022 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273dc479a/1c142f90483b4be38edfc4cc365ad0a3/FLAG8df979169 [2023-11-10 12:20:40,032 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273dc479a/1c142f90483b4be38edfc4cc365ad0a3 [2023-11-10 12:20:40,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:20:40,035 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:20:40,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:20:40,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:20:40,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:20:40,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7618c7ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40, skipping insertion in model container [2023-11-10 12:20:40,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,056 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:20:40,157 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/parallel-lamport.wvr.c[4210,4223] [2023-11-10 12:20:40,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:20:40,181 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:20:40,200 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/parallel-lamport.wvr.c[4210,4223] [2023-11-10 12:20:40,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:20:40,208 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:20:40,208 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:20:40,213 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:20:40,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40 WrapperNode [2023-11-10 12:20:40,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:20:40,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:20:40,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:20:40,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:20:40,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,241 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 243 [2023-11-10 12:20:40,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:20:40,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:20:40,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:20:40,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:20:40,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,255 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:20:40,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:20:40,261 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:20:40,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:20:40,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (1/1) ... [2023-11-10 12:20:40,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:20:40,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:20:40,286 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) [2023-11-10 12:20:40,310 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 [2023-11-10 12:20:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:20:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:20:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:20:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:20:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-10 12:20:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-10 12:20:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-10 12:20:40,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-10 12:20:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-10 12:20:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-10 12:20:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:20:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 12:20:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 12:20:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-10 12:20:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:20:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:20:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:20:40,326 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 12:20:40,412 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:20:40,414 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:20:40,699 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:20:40,863 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:20:40,864 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-10 12:20:40,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:20:40 BoogieIcfgContainer [2023-11-10 12:20:40,870 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:20:40,873 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:20:40,873 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:20:40,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:20:40,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:20:40" (1/3) ... [2023-11-10 12:20:40,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8323ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:20:40, skipping insertion in model container [2023-11-10 12:20:40,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:20:40" (2/3) ... [2023-11-10 12:20:40,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8323ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:20:40, skipping insertion in model container [2023-11-10 12:20:40,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:20:40" (3/3) ... [2023-11-10 12:20:40,878 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2023-11-10 12:20:40,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:20:40,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:20:40,914 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:20:41,004 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-10 12:20:41,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 191 transitions, 403 flow [2023-11-10 12:20:41,121 INFO L124 PetriNetUnfolderBase]: 7/188 cut-off events. [2023-11-10 12:20:41,121 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-10 12:20:41,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 7/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2023-11-10 12:20:41,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 191 transitions, 403 flow [2023-11-10 12:20:41,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 177 transitions, 372 flow [2023-11-10 12:20:41,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:20:41,152 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;@3f3b832b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:20:41,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-10 12:20:41,192 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:20:41,192 INFO L124 PetriNetUnfolderBase]: 7/176 cut-off events. [2023-11-10 12:20:41,192 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-10 12:20:41,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:20:41,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:20:41,194 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 1 more)] === [2023-11-10 12:20:41,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:20:41,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1626675019, now seen corresponding path program 1 times [2023-11-10 12:20:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:20:41,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107426207] [2023-11-10 12:20:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:20:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:20:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:20:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:20:41,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:20:41,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107426207] [2023-11-10 12:20:41,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107426207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:20:41,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:20:41,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:20:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367237356] [2023-11-10 12:20:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:20:41,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:20:41,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:20:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:20:41,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:20:41,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 191 [2023-11-10 12:20:41,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 177 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 154.16666666666666) internal successors, (925), 6 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:41,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:20:41,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 191 [2023-11-10 12:20:41,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:20:42,139 INFO L124 PetriNetUnfolderBase]: 275/856 cut-off events. [2023-11-10 12:20:42,139 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-11-10 12:20:42,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 856 events. 275/856 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4372 event pairs, 274 based on Foata normal form. 48/888 useless extension candidates. Maximal degree in co-relation 942. Up to 373 conditions per place. [2023-11-10 12:20:42,149 INFO L140 encePairwiseOnDemand]: 172/191 looper letters, 31 selfloop transitions, 8 changer transitions 20/190 dead transitions. [2023-11-10 12:20:42,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 190 transitions, 515 flow [2023-11-10 12:20:42,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:20:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:20:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1407 transitions. [2023-11-10 12:20:42,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8184991273996509 [2023-11-10 12:20:42,166 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1407 transitions. [2023-11-10 12:20:42,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1407 transitions. [2023-11-10 12:20:42,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:20:42,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1407 transitions. [2023-11-10 12:20:42,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 156.33333333333334) internal successors, (1407), 9 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:42,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:42,185 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:42,186 INFO L175 Difference]: Start difference. First operand has 180 places, 177 transitions, 372 flow. Second operand 9 states and 1407 transitions. [2023-11-10 12:20:42,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 190 transitions, 515 flow [2023-11-10 12:20:42,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 190 transitions, 497 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-10 12:20:42,196 INFO L231 Difference]: Finished difference. Result has 185 places, 167 transitions, 372 flow [2023-11-10 12:20:42,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=372, PETRI_PLACES=185, PETRI_TRANSITIONS=167} [2023-11-10 12:20:42,200 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 5 predicate places. [2023-11-10 12:20:42,200 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 167 transitions, 372 flow [2023-11-10 12:20:42,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.16666666666666) internal successors, (925), 6 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:42,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:20:42,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:20:42,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:20:42,202 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 1 more)] === [2023-11-10 12:20:42,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:20:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1984648677, now seen corresponding path program 1 times [2023-11-10 12:20:42,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:20:42,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047969095] [2023-11-10 12:20:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:20:42,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:20:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:20:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:20:43,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:20:43,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047969095] [2023-11-10 12:20:43,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047969095] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:20:43,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983400001] [2023-11-10 12:20:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:20:43,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:20:43,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:20:43,328 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) [2023-11-10 12:20:43,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-10 12:20:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:20:43,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-10 12:20:43,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:20:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:20:44,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:20:44,416 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:20:44,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 38 [2023-11-10 12:20:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:20:45,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983400001] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:20:45,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:20:45,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 49 [2023-11-10 12:20:45,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372960640] [2023-11-10 12:20:45,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:20:45,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-10 12:20:45,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:20:45,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-10 12:20:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=2067, Unknown=0, NotChecked=0, Total=2352 [2023-11-10 12:20:45,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 191 [2023-11-10 12:20:45,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 167 transitions, 372 flow. Second operand has 49 states, 49 states have (on average 94.16326530612245) internal successors, (4614), 49 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:45,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:20:45,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 191 [2023-11-10 12:20:45,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:20:47,962 INFO L124 PetriNetUnfolderBase]: 1903/4076 cut-off events. [2023-11-10 12:20:47,963 INFO L125 PetriNetUnfolderBase]: For 357/357 co-relation queries the response was YES. [2023-11-10 12:20:47,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8006 conditions, 4076 events. 1903/4076 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30019 event pairs, 873 based on Foata normal form. 2/4036 useless extension candidates. Maximal degree in co-relation 4743. Up to 1223 conditions per place. [2023-11-10 12:20:47,975 INFO L140 encePairwiseOnDemand]: 148/191 looper letters, 79 selfloop transitions, 18 changer transitions 222/397 dead transitions. [2023-11-10 12:20:47,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 397 transitions, 1582 flow [2023-11-10 12:20:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-10 12:20:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-10 12:20:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4821 transitions. [2023-11-10 12:20:47,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048167539267016 [2023-11-10 12:20:47,983 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 4821 transitions. [2023-11-10 12:20:47,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 4821 transitions. [2023-11-10 12:20:47,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:20:47,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 4821 transitions. [2023-11-10 12:20:47,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 96.42) internal successors, (4821), 50 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:48,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 191.0) internal successors, (9741), 51 states have internal predecessors, (9741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:48,002 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 191.0) internal successors, (9741), 51 states have internal predecessors, (9741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:48,002 INFO L175 Difference]: Start difference. First operand has 185 places, 167 transitions, 372 flow. Second operand 50 states and 4821 transitions. [2023-11-10 12:20:48,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 397 transitions, 1582 flow [2023-11-10 12:20:48,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 397 transitions, 1560 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-10 12:20:48,008 INFO L231 Difference]: Finished difference. Result has 258 places, 171 transitions, 560 flow [2023-11-10 12:20:48,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=560, PETRI_PLACES=258, PETRI_TRANSITIONS=171} [2023-11-10 12:20:48,009 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 78 predicate places. [2023-11-10 12:20:48,009 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 171 transitions, 560 flow [2023-11-10 12:20:48,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 94.16326530612245) internal successors, (4614), 49 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:48,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:20:48,011 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:20:48,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-10 12:20:48,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:20:48,224 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 1 more)] === [2023-11-10 12:20:48,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:20:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1690654697, now seen corresponding path program 2 times [2023-11-10 12:20:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:20:48,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89528215] [2023-11-10 12:20:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:20:48,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:20:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:20:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:20:48,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:20:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89528215] [2023-11-10 12:20:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89528215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:20:48,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:20:48,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 12:20:48,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232683710] [2023-11-10 12:20:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:20:48,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 12:20:48,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:20:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 12:20:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-10 12:20:48,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 191 [2023-11-10 12:20:48,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 171 transitions, 560 flow. Second operand has 7 states, 7 states have (on average 157.42857142857142) internal successors, (1102), 7 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:48,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:20:48,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 191 [2023-11-10 12:20:48,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:20:48,799 INFO L124 PetriNetUnfolderBase]: 1226/2733 cut-off events. [2023-11-10 12:20:48,799 INFO L125 PetriNetUnfolderBase]: For 16645/16747 co-relation queries the response was YES. [2023-11-10 12:20:48,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10730 conditions, 2733 events. 1226/2733 cut-off events. For 16645/16747 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 18776 event pairs, 562 based on Foata normal form. 32/2690 useless extension candidates. Maximal degree in co-relation 10676. Up to 673 conditions per place. [2023-11-10 12:20:48,837 INFO L140 encePairwiseOnDemand]: 181/191 looper letters, 93 selfloop transitions, 18 changer transitions 0/251 dead transitions. [2023-11-10 12:20:48,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 251 transitions, 1348 flow [2023-11-10 12:20:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:20:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:20:48,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1489 transitions. [2023-11-10 12:20:48,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8662012798138452 [2023-11-10 12:20:48,840 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1489 transitions. [2023-11-10 12:20:48,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1489 transitions. [2023-11-10 12:20:48,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:20:48,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1489 transitions. [2023-11-10 12:20:48,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 165.44444444444446) internal successors, (1489), 9 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:48,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:48,845 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 191.0) internal successors, (1910), 10 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:48,845 INFO L175 Difference]: Start difference. First operand has 258 places, 171 transitions, 560 flow. Second operand 9 states and 1489 transitions. [2023-11-10 12:20:48,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 251 transitions, 1348 flow [2023-11-10 12:20:48,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 251 transitions, 1126 flow, removed 100 selfloop flow, removed 33 redundant places. [2023-11-10 12:20:48,868 INFO L231 Difference]: Finished difference. Result has 203 places, 185 transitions, 568 flow [2023-11-10 12:20:48,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=568, PETRI_PLACES=203, PETRI_TRANSITIONS=185} [2023-11-10 12:20:48,869 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 23 predicate places. [2023-11-10 12:20:48,869 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 185 transitions, 568 flow [2023-11-10 12:20:48,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 157.42857142857142) internal successors, (1102), 7 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:48,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:20:48,870 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:20:48,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 12:20:48,870 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 1 more)] === [2023-11-10 12:20:48,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:20:48,871 INFO L85 PathProgramCache]: Analyzing trace with hash -563684849, now seen corresponding path program 3 times [2023-11-10 12:20:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:20:48,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455512781] [2023-11-10 12:20:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:20:48,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:20:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:20:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:20:48,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:20:48,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455512781] [2023-11-10 12:20:48,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455512781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:20:48,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:20:48,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-10 12:20:48,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95250975] [2023-11-10 12:20:48,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:20:48,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 12:20:48,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:20:48,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 12:20:48,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 12:20:48,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 191 [2023-11-10 12:20:48,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 185 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:48,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:20:48,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 191 [2023-11-10 12:20:48,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:20:49,197 INFO L124 PetriNetUnfolderBase]: 838/2144 cut-off events. [2023-11-10 12:20:49,197 INFO L125 PetriNetUnfolderBase]: For 6053/6105 co-relation queries the response was YES. [2023-11-10 12:20:49,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7283 conditions, 2144 events. 838/2144 cut-off events. For 6053/6105 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15288 event pairs, 735 based on Foata normal form. 15/2093 useless extension candidates. Maximal degree in co-relation 7152. Up to 1218 conditions per place. [2023-11-10 12:20:49,215 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 27 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2023-11-10 12:20:49,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 193 transitions, 682 flow [2023-11-10 12:20:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 12:20:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 12:20:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-11-10 12:20:49,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9057591623036649 [2023-11-10 12:20:49,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-11-10 12:20:49,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-11-10 12:20:49,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:20:49,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-11-10 12:20:49,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:49,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:49,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:49,219 INFO L175 Difference]: Start difference. First operand has 203 places, 185 transitions, 568 flow. Second operand 3 states and 519 transitions. [2023-11-10 12:20:49,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 193 transitions, 682 flow [2023-11-10 12:20:49,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 193 transitions, 668 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-10 12:20:49,231 INFO L231 Difference]: Finished difference. Result has 204 places, 185 transitions, 566 flow [2023-11-10 12:20:49,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=204, PETRI_TRANSITIONS=185} [2023-11-10 12:20:49,233 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 24 predicate places. [2023-11-10 12:20:49,233 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 185 transitions, 566 flow [2023-11-10 12:20:49,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:49,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:20:49,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:20:49,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 12:20:49,233 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 1 more)] === [2023-11-10 12:20:49,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:20:49,234 INFO L85 PathProgramCache]: Analyzing trace with hash -450387039, now seen corresponding path program 4 times [2023-11-10 12:20:49,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:20:49,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521617586] [2023-11-10 12:20:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:20:49,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:20:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:20:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:20:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:20:49,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521617586] [2023-11-10 12:20:49,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521617586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:20:49,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:20:49,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-10 12:20:49,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982500940] [2023-11-10 12:20:49,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:20:49,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 12:20:49,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:20:49,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 12:20:49,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 12:20:49,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 191 [2023-11-10 12:20:49,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 185 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:49,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:20:49,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 191 [2023-11-10 12:20:49,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:20:49,524 INFO L124 PetriNetUnfolderBase]: 813/2155 cut-off events. [2023-11-10 12:20:49,524 INFO L125 PetriNetUnfolderBase]: For 4821/4843 co-relation queries the response was YES. [2023-11-10 12:20:49,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6923 conditions, 2155 events. 813/2155 cut-off events. For 4821/4843 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15284 event pairs, 718 based on Foata normal form. 24/2099 useless extension candidates. Maximal degree in co-relation 6792. Up to 1191 conditions per place. [2023-11-10 12:20:49,540 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 27 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2023-11-10 12:20:49,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 193 transitions, 680 flow [2023-11-10 12:20:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 12:20:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 12:20:49,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-11-10 12:20:49,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9057591623036649 [2023-11-10 12:20:49,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-11-10 12:20:49,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-11-10 12:20:49,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:20:49,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-11-10 12:20:49,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:49,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:49,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:49,544 INFO L175 Difference]: Start difference. First operand has 204 places, 185 transitions, 566 flow. Second operand 3 states and 519 transitions. [2023-11-10 12:20:49,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 193 transitions, 680 flow [2023-11-10 12:20:49,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 193 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-10 12:20:49,552 INFO L231 Difference]: Finished difference. Result has 205 places, 185 transitions, 570 flow [2023-11-10 12:20:49,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=570, PETRI_PLACES=205, PETRI_TRANSITIONS=185} [2023-11-10 12:20:49,553 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 25 predicate places. [2023-11-10 12:20:49,553 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 185 transitions, 570 flow [2023-11-10 12:20:49,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:49,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:20:49,554 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:20:49,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 12:20:49,554 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 1 more)] === [2023-11-10 12:20:49,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:20:49,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2026125155, now seen corresponding path program 5 times [2023-11-10 12:20:49,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:20:49,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44159709] [2023-11-10 12:20:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:20:49,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:20:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:20:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:20:51,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:20:51,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44159709] [2023-11-10 12:20:51,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44159709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:20:51,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360719353] [2023-11-10 12:20:51,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:20:51,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:20:51,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:20:51,818 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) [2023-11-10 12:20:51,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-10 12:20:51,912 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-10 12:20:51,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:20:51,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-10 12:20:51,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:20:52,364 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:20:52,367 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:20:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:20:52,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:20:52,591 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-11-10 12:20:52,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-11-10 12:20:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:20:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360719353] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-10 12:20:52,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-10 12:20:52,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [31, 15] total 46 [2023-11-10 12:20:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724753730] [2023-11-10 12:20:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:20:52,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 12:20:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:20:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 12:20:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1930, Unknown=0, NotChecked=0, Total=2070 [2023-11-10 12:20:52,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 191 [2023-11-10 12:20:52,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 185 transitions, 570 flow. Second operand has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:52,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:20:52,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 191 [2023-11-10 12:20:52,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:20:54,252 INFO L124 PetriNetUnfolderBase]: 3685/7780 cut-off events. [2023-11-10 12:20:54,252 INFO L125 PetriNetUnfolderBase]: For 16394/16582 co-relation queries the response was YES. [2023-11-10 12:20:54,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26909 conditions, 7780 events. 3685/7780 cut-off events. For 16394/16582 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 66951 event pairs, 737 based on Foata normal form. 2/7605 useless extension candidates. Maximal degree in co-relation 26753. Up to 2666 conditions per place. [2023-11-10 12:20:54,305 INFO L140 encePairwiseOnDemand]: 177/191 looper letters, 163 selfloop transitions, 45 changer transitions 8/333 dead transitions. [2023-11-10 12:20:54,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 333 transitions, 1853 flow [2023-11-10 12:20:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 12:20:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 12:20:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2104 transitions. [2023-11-10 12:20:54,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6479827533107484 [2023-11-10 12:20:54,310 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2104 transitions. [2023-11-10 12:20:54,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2104 transitions. [2023-11-10 12:20:54,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:20:54,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2104 transitions. [2023-11-10 12:20:54,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 123.76470588235294) internal successors, (2104), 17 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:54,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:54,318 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:54,318 INFO L175 Difference]: Start difference. First operand has 205 places, 185 transitions, 570 flow. Second operand 17 states and 2104 transitions. [2023-11-10 12:20:54,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 333 transitions, 1853 flow [2023-11-10 12:20:54,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 333 transitions, 1849 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-10 12:20:54,331 INFO L231 Difference]: Finished difference. Result has 224 places, 233 transitions, 1066 flow [2023-11-10 12:20:54,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1066, PETRI_PLACES=224, PETRI_TRANSITIONS=233} [2023-11-10 12:20:54,332 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 44 predicate places. [2023-11-10 12:20:54,332 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 233 transitions, 1066 flow [2023-11-10 12:20:54,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:54,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:20:54,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:20:54,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-10 12:20:54,545 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,SelfDestructingSolverStorable5 [2023-11-10 12:20:54,546 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 1 more)] === [2023-11-10 12:20:54,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:20:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1070648097, now seen corresponding path program 6 times [2023-11-10 12:20:54,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:20:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856441825] [2023-11-10 12:20:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:20:54,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:20:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:20:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:20:56,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:20:56,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856441825] [2023-11-10 12:20:56,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856441825] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:20:56,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141935288] [2023-11-10 12:20:56,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-10 12:20:56,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:20:56,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:20:56,057 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) [2023-11-10 12:20:56,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-10 12:20:56,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-10 12:20:56,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:20:56,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-10 12:20:56,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:20:56,445 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:20:56,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:20:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:20:56,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:20:56,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141935288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:20:56,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:20:56,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [31] total 38 [2023-11-10 12:20:56,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713259985] [2023-11-10 12:20:56,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:20:56,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 12:20:56,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:20:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 12:20:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1311, Unknown=0, NotChecked=0, Total=1406 [2023-11-10 12:20:56,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 191 [2023-11-10 12:20:56,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 233 transitions, 1066 flow. Second operand has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:56,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:20:56,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 191 [2023-11-10 12:20:56,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:20:58,163 INFO L124 PetriNetUnfolderBase]: 4018/8750 cut-off events. [2023-11-10 12:20:58,163 INFO L125 PetriNetUnfolderBase]: For 25386/25593 co-relation queries the response was YES. [2023-11-10 12:20:58,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33308 conditions, 8750 events. 4018/8750 cut-off events. For 25386/25593 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 78157 event pairs, 1140 based on Foata normal form. 8/8561 useless extension candidates. Maximal degree in co-relation 33263. Up to 3883 conditions per place. [2023-11-10 12:20:58,221 INFO L140 encePairwiseOnDemand]: 175/191 looper letters, 143 selfloop transitions, 41 changer transitions 16/317 dead transitions. [2023-11-10 12:20:58,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 317 transitions, 1947 flow [2023-11-10 12:20:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 12:20:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 12:20:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2055 transitions. [2023-11-10 12:20:58,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6328919002155836 [2023-11-10 12:20:58,225 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2055 transitions. [2023-11-10 12:20:58,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2055 transitions. [2023-11-10 12:20:58,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:20:58,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2055 transitions. [2023-11-10 12:20:58,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 120.88235294117646) internal successors, (2055), 17 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:58,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:58,232 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:58,232 INFO L175 Difference]: Start difference. First operand has 224 places, 233 transitions, 1066 flow. Second operand 17 states and 2055 transitions. [2023-11-10 12:20:58,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 317 transitions, 1947 flow [2023-11-10 12:20:58,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 317 transitions, 1823 flow, removed 60 selfloop flow, removed 5 redundant places. [2023-11-10 12:20:58,259 INFO L231 Difference]: Finished difference. Result has 242 places, 245 transitions, 1210 flow [2023-11-10 12:20:58,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1210, PETRI_PLACES=242, PETRI_TRANSITIONS=245} [2023-11-10 12:20:58,259 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 62 predicate places. [2023-11-10 12:20:58,260 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 245 transitions, 1210 flow [2023-11-10 12:20:58,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:20:58,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:20:58,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:20:58,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-10 12:20:58,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:20:58,468 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 1 more)] === [2023-11-10 12:20:58,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:20:58,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1147126971, now seen corresponding path program 7 times [2023-11-10 12:20:58,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:20:58,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407136612] [2023-11-10 12:20:58,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:20:58,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:20:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:00,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:00,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407136612] [2023-11-10 12:21:00,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407136612] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:00,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915056782] [2023-11-10 12:21:00,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-10 12:21:00,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:00,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:00,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:21:00,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-10 12:21:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:00,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-10 12:21:01,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:21:02,095 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:21:02,096 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2023-11-10 12:21:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:02,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:21:02,415 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-11-10 12:21:02,415 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 90 [2023-11-10 12:21:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:21:02,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915056782] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:02,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-10 12:21:02,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [31, 26] total 63 [2023-11-10 12:21:02,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167311488] [2023-11-10 12:21:02,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:21:02,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-10 12:21:02,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-10 12:21:02,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=3589, Unknown=0, NotChecked=0, Total=3906 [2023-11-10 12:21:02,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 191 [2023-11-10 12:21:02,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 245 transitions, 1210 flow. Second operand has 18 states, 18 states have (on average 111.94444444444444) internal successors, (2015), 18 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:02,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:02,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 191 [2023-11-10 12:21:02,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:04,736 INFO L124 PetriNetUnfolderBase]: 4403/9955 cut-off events. [2023-11-10 12:21:04,736 INFO L125 PetriNetUnfolderBase]: For 29789/30000 co-relation queries the response was YES. [2023-11-10 12:21:04,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37747 conditions, 9955 events. 4403/9955 cut-off events. For 29789/30000 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 94015 event pairs, 1480 based on Foata normal form. 10/9780 useless extension candidates. Maximal degree in co-relation 37679. Up to 4790 conditions per place. [2023-11-10 12:21:04,814 INFO L140 encePairwiseOnDemand]: 170/191 looper letters, 176 selfloop transitions, 60 changer transitions 10/360 dead transitions. [2023-11-10 12:21:04,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 360 transitions, 2441 flow [2023-11-10 12:21:04,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 12:21:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 12:21:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2030 transitions. [2023-11-10 12:21:04,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6251924853711118 [2023-11-10 12:21:04,818 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2030 transitions. [2023-11-10 12:21:04,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2030 transitions. [2023-11-10 12:21:04,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:04,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2030 transitions. [2023-11-10 12:21:04,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 119.41176470588235) internal successors, (2030), 17 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:04,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:04,824 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:04,824 INFO L175 Difference]: Start difference. First operand has 242 places, 245 transitions, 1210 flow. Second operand 17 states and 2030 transitions. [2023-11-10 12:21:04,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 360 transitions, 2441 flow [2023-11-10 12:21:04,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 360 transitions, 2375 flow, removed 19 selfloop flow, removed 7 redundant places. [2023-11-10 12:21:04,880 INFO L231 Difference]: Finished difference. Result has 256 places, 271 transitions, 1669 flow [2023-11-10 12:21:04,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1669, PETRI_PLACES=256, PETRI_TRANSITIONS=271} [2023-11-10 12:21:04,881 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 76 predicate places. [2023-11-10 12:21:04,881 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 271 transitions, 1669 flow [2023-11-10 12:21:04,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 111.94444444444444) internal successors, (2015), 18 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:04,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:04,882 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:04,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-10 12:21:05,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:05,087 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 1 more)] === [2023-11-10 12:21:05,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:05,088 INFO L85 PathProgramCache]: Analyzing trace with hash 477249643, now seen corresponding path program 8 times [2023-11-10 12:21:05,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:05,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767348922] [2023-11-10 12:21:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:05,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:06,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767348922] [2023-11-10 12:21:06,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767348922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708474497] [2023-11-10 12:21:06,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:21:06,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:06,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:06,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:21:06,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-10 12:21:06,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-10 12:21:06,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:21:06,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-10 12:21:06,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:21:06,478 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:21:06,478 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:21:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:21:06,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:21:06,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708474497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:21:06,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:21:06,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [28] total 35 [2023-11-10 12:21:06,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012528383] [2023-11-10 12:21:06,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:21:06,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 12:21:06,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 12:21:06,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1101, Unknown=0, NotChecked=0, Total=1190 [2023-11-10 12:21:06,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 191 [2023-11-10 12:21:06,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 271 transitions, 1669 flow. Second operand has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:06,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:06,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 191 [2023-11-10 12:21:06,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:08,336 INFO L124 PetriNetUnfolderBase]: 4415/9905 cut-off events. [2023-11-10 12:21:08,337 INFO L125 PetriNetUnfolderBase]: For 39023/39240 co-relation queries the response was YES. [2023-11-10 12:21:08,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40512 conditions, 9905 events. 4415/9905 cut-off events. For 39023/39240 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 93451 event pairs, 1211 based on Foata normal form. 10/9693 useless extension candidates. Maximal degree in co-relation 40439. Up to 4332 conditions per place. [2023-11-10 12:21:08,455 INFO L140 encePairwiseOnDemand]: 175/191 looper letters, 148 selfloop transitions, 60 changer transitions 12/337 dead transitions. [2023-11-10 12:21:08,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 337 transitions, 2465 flow [2023-11-10 12:21:08,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-10 12:21:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-10 12:21:08,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1827 transitions. [2023-11-10 12:21:08,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376963350785341 [2023-11-10 12:21:08,457 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1827 transitions. [2023-11-10 12:21:08,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1827 transitions. [2023-11-10 12:21:08,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:08,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1827 transitions. [2023-11-10 12:21:08,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 121.8) internal successors, (1827), 15 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:08,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 191.0) internal successors, (3056), 16 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:08,463 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 191.0) internal successors, (3056), 16 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:08,463 INFO L175 Difference]: Start difference. First operand has 256 places, 271 transitions, 1669 flow. Second operand 15 states and 1827 transitions. [2023-11-10 12:21:08,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 337 transitions, 2465 flow [2023-11-10 12:21:08,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 337 transitions, 2291 flow, removed 52 selfloop flow, removed 9 redundant places. [2023-11-10 12:21:08,697 INFO L231 Difference]: Finished difference. Result has 262 places, 271 transitions, 1664 flow [2023-11-10 12:21:08,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1664, PETRI_PLACES=262, PETRI_TRANSITIONS=271} [2023-11-10 12:21:08,699 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 82 predicate places. [2023-11-10 12:21:08,699 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 271 transitions, 1664 flow [2023-11-10 12:21:08,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:08,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:08,699 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:08,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-10 12:21:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:08,904 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 1 more)] === [2023-11-10 12:21:08,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1419808681, now seen corresponding path program 9 times [2023-11-10 12:21:08,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280062464] [2023-11-10 12:21:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:10,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:10,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280062464] [2023-11-10 12:21:10,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280062464] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:10,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490867510] [2023-11-10 12:21:10,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:21:10,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:10,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:10,649 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:21:10,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-10 12:21:10,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-10 12:21:10,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:21:10,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-10 12:21:10,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:21:11,022 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:21:11,022 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:21:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:21:11,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:21:11,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490867510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:21:11,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:21:11,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [31] total 38 [2023-11-10 12:21:11,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264251949] [2023-11-10 12:21:11,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:21:11,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 12:21:11,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 12:21:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1304, Unknown=0, NotChecked=0, Total=1406 [2023-11-10 12:21:11,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 191 [2023-11-10 12:21:11,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 271 transitions, 1664 flow. Second operand has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:11,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:11,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 191 [2023-11-10 12:21:11,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:12,865 INFO L124 PetriNetUnfolderBase]: 4478/10239 cut-off events. [2023-11-10 12:21:12,866 INFO L125 PetriNetUnfolderBase]: For 43540/43739 co-relation queries the response was YES. [2023-11-10 12:21:12,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42050 conditions, 10239 events. 4478/10239 cut-off events. For 43540/43739 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 98317 event pairs, 1191 based on Foata normal form. 10/10019 useless extension candidates. Maximal degree in co-relation 41975. Up to 4133 conditions per place. [2023-11-10 12:21:12,931 INFO L140 encePairwiseOnDemand]: 175/191 looper letters, 131 selfloop transitions, 48 changer transitions 72/368 dead transitions. [2023-11-10 12:21:12,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 368 transitions, 2737 flow [2023-11-10 12:21:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-10 12:21:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-10 12:21:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2303 transitions. [2023-11-10 12:21:12,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346100854229816 [2023-11-10 12:21:12,934 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2303 transitions. [2023-11-10 12:21:12,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2303 transitions. [2023-11-10 12:21:12,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:12,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2303 transitions. [2023-11-10 12:21:12,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 121.21052631578948) internal successors, (2303), 19 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:12,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 191.0) internal successors, (3820), 20 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:12,940 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 191.0) internal successors, (3820), 20 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:12,940 INFO L175 Difference]: Start difference. First operand has 262 places, 271 transitions, 1664 flow. Second operand 19 states and 2303 transitions. [2023-11-10 12:21:12,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 368 transitions, 2737 flow [2023-11-10 12:21:13,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 368 transitions, 2610 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-11-10 12:21:13,046 INFO L231 Difference]: Finished difference. Result has 270 places, 252 transitions, 1414 flow [2023-11-10 12:21:13,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1414, PETRI_PLACES=270, PETRI_TRANSITIONS=252} [2023-11-10 12:21:13,047 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 90 predicate places. [2023-11-10 12:21:13,047 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 252 transitions, 1414 flow [2023-11-10 12:21:13,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:13,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:13,048 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:13,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-10 12:21:13,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:13,253 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 1 more)] === [2023-11-10 12:21:13,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:13,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1046850593, now seen corresponding path program 10 times [2023-11-10 12:21:13,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:13,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153535349] [2023-11-10 12:21:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:13,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:14,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:14,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153535349] [2023-11-10 12:21:14,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153535349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:14,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501471955] [2023-11-10 12:21:14,403 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:21:14,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:14,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:14,404 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:21:14,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-10 12:21:14,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:21:14,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:21:14,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-10 12:21:14,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:21:15,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-10 12:21:15,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-10 12:21:16,202 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:21:16,203 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 28 [2023-11-10 12:21:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:16,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:21:16,456 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_317 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_317) c_~f~0.base))) (let ((.cse0 (select .cse1 (+ c_~f~0.offset (* c_~j~0 4))))) (or (< .cse0 0) (= (select .cse1 (+ c_~f~0.offset (* .cse0 4))) (select .cse1 (+ c_~f~0.offset (* c_~i~0 4)))) (< c_~n~0 (+ .cse0 1)))))) is different from false [2023-11-10 12:21:16,578 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:21:16,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 160 treesize of output 168 [2023-11-10 12:21:16,594 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:21:16,595 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 64 [2023-11-10 12:21:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:18,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501471955] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:21:18,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:21:18,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 33, 33] total 83 [2023-11-10 12:21:18,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874351055] [2023-11-10 12:21:18,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:21:18,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-11-10 12:21:18,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:18,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-11-10 12:21:18,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=6198, Unknown=1, NotChecked=160, Total=6806 [2023-11-10 12:21:18,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 191 [2023-11-10 12:21:18,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 252 transitions, 1414 flow. Second operand has 83 states, 83 states have (on average 84.73493975903614) internal successors, (7033), 83 states have internal predecessors, (7033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:18,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:18,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 191 [2023-11-10 12:21:18,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:29,152 INFO L124 PetriNetUnfolderBase]: 10275/23482 cut-off events. [2023-11-10 12:21:29,152 INFO L125 PetriNetUnfolderBase]: For 101224/101606 co-relation queries the response was YES. [2023-11-10 12:21:29,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93563 conditions, 23482 events. 10275/23482 cut-off events. For 101224/101606 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 255223 event pairs, 1966 based on Foata normal form. 34/23135 useless extension candidates. Maximal degree in co-relation 93406. Up to 4470 conditions per place. [2023-11-10 12:21:29,347 INFO L140 encePairwiseOnDemand]: 140/191 looper letters, 407 selfloop transitions, 202 changer transitions 121/816 dead transitions. [2023-11-10 12:21:29,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 816 transitions, 6802 flow [2023-11-10 12:21:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-11-10 12:21:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2023-11-10 12:21:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 8660 transitions. [2023-11-10 12:21:29,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46265626669515975 [2023-11-10 12:21:29,375 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 8660 transitions. [2023-11-10 12:21:29,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 8660 transitions. [2023-11-10 12:21:29,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:29,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 8660 transitions. [2023-11-10 12:21:29,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 88.36734693877551) internal successors, (8660), 98 states have internal predecessors, (8660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:29,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 191.0) internal successors, (18909), 99 states have internal predecessors, (18909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:29,401 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 191.0) internal successors, (18909), 99 states have internal predecessors, (18909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:29,401 INFO L175 Difference]: Start difference. First operand has 270 places, 252 transitions, 1414 flow. Second operand 98 states and 8660 transitions. [2023-11-10 12:21:29,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 816 transitions, 6802 flow [2023-11-10 12:21:29,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 816 transitions, 6329 flow, removed 93 selfloop flow, removed 19 redundant places. [2023-11-10 12:21:29,690 INFO L231 Difference]: Finished difference. Result has 391 places, 401 transitions, 3542 flow [2023-11-10 12:21:29,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=3542, PETRI_PLACES=391, PETRI_TRANSITIONS=401} [2023-11-10 12:21:29,691 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 211 predicate places. [2023-11-10 12:21:29,691 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 401 transitions, 3542 flow [2023-11-10 12:21:29,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 84.73493975903614) internal successors, (7033), 83 states have internal predecessors, (7033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:29,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:29,693 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:29,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-10 12:21:29,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:29,898 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 1 more)] === [2023-11-10 12:21:29,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:29,900 INFO L85 PathProgramCache]: Analyzing trace with hash 185383921, now seen corresponding path program 11 times [2023-11-10 12:21:29,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:29,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182735262] [2023-11-10 12:21:29,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:29,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182735262] [2023-11-10 12:21:31,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182735262] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:31,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641192507] [2023-11-10 12:21:31,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:21:31,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:31,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:31,867 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:21:31,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-10 12:21:31,983 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-10 12:21:31,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:21:31,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-10 12:21:31,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:21:31,992 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-10 12:21:32,074 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-10 12:21:32,074 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-10 12:21:32,518 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-10 12:21:32,673 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:21:32,673 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:21:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:21:32,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:21:32,898 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:21:32,898 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-11-10 12:21:32,915 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:21:32,915 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 52 [2023-11-10 12:21:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:21:33,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641192507] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:33,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-10 12:21:33,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [33, 22] total 57 [2023-11-10 12:21:33,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904272914] [2023-11-10 12:21:33,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:21:33,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-10 12:21:33,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-10 12:21:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2989, Unknown=3, NotChecked=0, Total=3192 [2023-11-10 12:21:33,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 191 [2023-11-10 12:21:33,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 401 transitions, 3542 flow. Second operand has 20 states, 20 states have (on average 94.2) internal successors, (1884), 20 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:33,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:33,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 191 [2023-11-10 12:21:33,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:37,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-10 12:21:41,823 INFO L124 PetriNetUnfolderBase]: 10531/23662 cut-off events. [2023-11-10 12:21:41,823 INFO L125 PetriNetUnfolderBase]: For 419430/420248 co-relation queries the response was YES. [2023-11-10 12:21:42,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139164 conditions, 23662 events. 10531/23662 cut-off events. For 419430/420248 co-relation queries the response was YES. Maximal size of possible extension queue 1265. Compared 255170 event pairs, 2258 based on Foata normal form. 78/23253 useless extension candidates. Maximal degree in co-relation 138864. Up to 8988 conditions per place. [2023-11-10 12:21:42,318 INFO L140 encePairwiseOnDemand]: 169/191 looper letters, 239 selfloop transitions, 124 changer transitions 21/491 dead transitions. [2023-11-10 12:21:42,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 491 transitions, 5297 flow [2023-11-10 12:21:42,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-10 12:21:42,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-10 12:21:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2158 transitions. [2023-11-10 12:21:42,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135649690623513 [2023-11-10 12:21:42,322 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2158 transitions. [2023-11-10 12:21:42,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2158 transitions. [2023-11-10 12:21:42,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:42,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2158 transitions. [2023-11-10 12:21:42,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 98.0909090909091) internal successors, (2158), 22 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:42,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 191.0) internal successors, (4393), 23 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:42,329 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 191.0) internal successors, (4393), 23 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:42,329 INFO L175 Difference]: Start difference. First operand has 391 places, 401 transitions, 3542 flow. Second operand 22 states and 2158 transitions. [2023-11-10 12:21:42,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 491 transitions, 5297 flow [2023-11-10 12:21:45,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 491 transitions, 4511 flow, removed 356 selfloop flow, removed 43 redundant places. [2023-11-10 12:21:45,073 INFO L231 Difference]: Finished difference. Result has 348 places, 409 transitions, 3379 flow [2023-11-10 12:21:45,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3379, PETRI_PLACES=348, PETRI_TRANSITIONS=409} [2023-11-10 12:21:45,075 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 168 predicate places. [2023-11-10 12:21:45,075 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 409 transitions, 3379 flow [2023-11-10 12:21:45,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 94.2) internal successors, (1884), 20 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:45,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:45,075 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:45,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-10 12:21:45,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-10 12:21:45,281 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 1 more)] === [2023-11-10 12:21:45,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash -2141367183, now seen corresponding path program 12 times [2023-11-10 12:21:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:45,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719696686] [2023-11-10 12:21:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:48,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719696686] [2023-11-10 12:21:48,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719696686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:48,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732546239] [2023-11-10 12:21:48,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-10 12:21:48,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:48,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:48,459 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:21:48,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-10 12:21:48,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-10 12:21:48,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:21:48,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-10 12:21:48,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:21:48,565 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-10 12:21:48,628 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-10 12:21:48,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-10 12:21:48,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-10 12:21:49,228 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:21:49,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:21:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:21:49,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:21:49,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732546239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:21:49,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:21:49,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [39] total 54 [2023-11-10 12:21:49,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812736315] [2023-11-10 12:21:49,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:21:49,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-10 12:21:49,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:49,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-10 12:21:49,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2686, Unknown=0, NotChecked=0, Total=2862 [2023-11-10 12:21:49,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 191 [2023-11-10 12:21:49,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 409 transitions, 3379 flow. Second operand has 20 states, 20 states have (on average 94.2) internal successors, (1884), 20 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:49,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:49,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 191 [2023-11-10 12:21:49,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:54,366 INFO L124 PetriNetUnfolderBase]: 10546/23294 cut-off events. [2023-11-10 12:21:54,366 INFO L125 PetriNetUnfolderBase]: For 310244/311018 co-relation queries the response was YES. [2023-11-10 12:21:54,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129234 conditions, 23294 events. 10546/23294 cut-off events. For 310244/311018 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 247596 event pairs, 2444 based on Foata normal form. 78/22880 useless extension candidates. Maximal degree in co-relation 129051. Up to 9058 conditions per place. [2023-11-10 12:21:54,640 INFO L140 encePairwiseOnDemand]: 167/191 looper letters, 234 selfloop transitions, 137 changer transitions 10/488 dead transitions. [2023-11-10 12:21:54,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 488 transitions, 4955 flow [2023-11-10 12:21:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-10 12:21:54,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-10 12:21:54,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2332 transitions. [2023-11-10 12:21:54,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087260034904014 [2023-11-10 12:21:54,643 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2332 transitions. [2023-11-10 12:21:54,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2332 transitions. [2023-11-10 12:21:54,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:54,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2332 transitions. [2023-11-10 12:21:54,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 97.16666666666667) internal successors, (2332), 24 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:54,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 191.0) internal successors, (4775), 25 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:54,650 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 191.0) internal successors, (4775), 25 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:54,650 INFO L175 Difference]: Start difference. First operand has 348 places, 409 transitions, 3379 flow. Second operand 24 states and 2332 transitions. [2023-11-10 12:21:54,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 488 transitions, 4955 flow [2023-11-10 12:21:56,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 488 transitions, 4744 flow, removed 29 selfloop flow, removed 18 redundant places. [2023-11-10 12:21:56,199 INFO L231 Difference]: Finished difference. Result has 354 places, 422 transitions, 3717 flow [2023-11-10 12:21:56,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=3204, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3717, PETRI_PLACES=354, PETRI_TRANSITIONS=422} [2023-11-10 12:21:56,200 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 174 predicate places. [2023-11-10 12:21:56,200 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 422 transitions, 3717 flow [2023-11-10 12:21:56,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 94.2) internal successors, (1884), 20 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:56,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:56,200 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:56,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-10 12:21:56,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-10 12:21:56,406 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 1 more)] === [2023-11-10 12:21:56,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1880206751, now seen corresponding path program 13 times [2023-11-10 12:21:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:56,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839369527] [2023-11-10 12:21:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:56,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:59,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:59,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839369527] [2023-11-10 12:21:59,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839369527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:59,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179945282] [2023-11-10 12:21:59,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-10 12:21:59,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:59,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:59,423 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:21:59,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-10 12:21:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:59,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-10 12:21:59,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:21:59,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-10 12:21:59,741 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-10 12:21:59,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-10 12:22:01,133 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-10 12:22:01,572 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:22:01,573 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 28 [2023-11-10 12:22:01,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:01,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:22:04,169 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:22:04,169 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 160 treesize of output 168 [2023-11-10 12:22:04,190 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:22:04,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 64 [2023-11-10 12:22:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:05,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179945282] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:22:05,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:22:05,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 33, 34] total 93 [2023-11-10 12:22:05,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462019642] [2023-11-10 12:22:05,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:22:05,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-11-10 12:22:05,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-11-10 12:22:05,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=8001, Unknown=8, NotChecked=0, Total=8556 [2023-11-10 12:22:05,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2023-11-10 12:22:05,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 422 transitions, 3717 flow. Second operand has 93 states, 93 states have (on average 77.75268817204301) internal successors, (7231), 93 states have internal predecessors, (7231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:05,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:05,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2023-11-10 12:22:05,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:15,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-10 12:22:26,842 INFO L124 PetriNetUnfolderBase]: 13322/31145 cut-off events. [2023-11-10 12:22:26,843 INFO L125 PetriNetUnfolderBase]: For 408739/409599 co-relation queries the response was YES. [2023-11-10 12:22:27,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170878 conditions, 31145 events. 13322/31145 cut-off events. For 408739/409599 co-relation queries the response was YES. Maximal size of possible extension queue 1841. Compared 362105 event pairs, 2074 based on Foata normal form. 104/30630 useless extension candidates. Maximal degree in co-relation 170631. Up to 8041 conditions per place. [2023-11-10 12:22:27,455 INFO L140 encePairwiseOnDemand]: 144/191 looper letters, 531 selfloop transitions, 304 changer transitions 97/1015 dead transitions. [2023-11-10 12:22:27,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1015 transitions, 11427 flow [2023-11-10 12:22:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-11-10 12:22:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2023-11-10 12:22:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 8725 transitions. [2023-11-10 12:22:27,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42692175955375056 [2023-11-10 12:22:27,482 INFO L72 ComplementDD]: Start complementDD. Operand 107 states and 8725 transitions. [2023-11-10 12:22:27,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 8725 transitions. [2023-11-10 12:22:27,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:27,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 107 states and 8725 transitions. [2023-11-10 12:22:27,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 108 states, 107 states have (on average 81.54205607476635) internal successors, (8725), 107 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:27,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 108 states, 108 states have (on average 191.0) internal successors, (20628), 108 states have internal predecessors, (20628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:27,506 INFO L81 ComplementDD]: Finished complementDD. Result has 108 states, 108 states have (on average 191.0) internal successors, (20628), 108 states have internal predecessors, (20628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:27,506 INFO L175 Difference]: Start difference. First operand has 354 places, 422 transitions, 3717 flow. Second operand 107 states and 8725 transitions. [2023-11-10 12:22:27,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1015 transitions, 11427 flow [2023-11-10 12:22:30,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 1015 transitions, 11091 flow, removed 33 selfloop flow, removed 20 redundant places. [2023-11-10 12:22:30,604 INFO L231 Difference]: Finished difference. Result has 476 places, 563 transitions, 6389 flow [2023-11-10 12:22:30,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=3495, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=6389, PETRI_PLACES=476, PETRI_TRANSITIONS=563} [2023-11-10 12:22:30,605 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 296 predicate places. [2023-11-10 12:22:30,605 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 563 transitions, 6389 flow [2023-11-10 12:22:30,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 77.75268817204301) internal successors, (7231), 93 states have internal predecessors, (7231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:30,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:30,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:30,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-10 12:22:30,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-10 12:22:30,812 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 1 more)] === [2023-11-10 12:22:30,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1154128455, now seen corresponding path program 14 times [2023-11-10 12:22:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:30,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849544886] [2023-11-10 12:22:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:30,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:32,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:32,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849544886] [2023-11-10 12:22:32,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849544886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:22:32,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793422613] [2023-11-10 12:22:32,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:22:32,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:22:32,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:22:32,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:22:32,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-10 12:22:32,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-10 12:22:32,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:22:32,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-10 12:22:32,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:22:32,156 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-10 12:22:32,223 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-10 12:22:32,224 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-10 12:22:32,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-10 12:22:32,793 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:22:32,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:22:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:22:32,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:22:32,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793422613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:32,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:22:32,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [29] total 44 [2023-11-10 12:22:32,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678842018] [2023-11-10 12:22:32,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:32,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-10 12:22:32,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:32,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-10 12:22:32,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1761, Unknown=0, NotChecked=0, Total=1892 [2023-11-10 12:22:32,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 191 [2023-11-10 12:22:32,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 563 transitions, 6389 flow. Second operand has 20 states, 20 states have (on average 94.2) internal successors, (1884), 20 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:32,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:32,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 191 [2023-11-10 12:22:32,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:22:41,847 INFO L124 PetriNetUnfolderBase]: 12555/29738 cut-off events. [2023-11-10 12:22:41,848 INFO L125 PetriNetUnfolderBase]: For 757181/758071 co-relation queries the response was YES. [2023-11-10 12:22:42,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195254 conditions, 29738 events. 12555/29738 cut-off events. For 757181/758071 co-relation queries the response was YES. Maximal size of possible extension queue 1776. Compared 347537 event pairs, 2245 based on Foata normal form. 91/29177 useless extension candidates. Maximal degree in co-relation 194861. Up to 12132 conditions per place. [2023-11-10 12:22:42,396 INFO L140 encePairwiseOnDemand]: 167/191 looper letters, 341 selfloop transitions, 185 changer transitions 17/650 dead transitions. [2023-11-10 12:22:42,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 650 transitions, 8731 flow [2023-11-10 12:22:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-10 12:22:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-10 12:22:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2524 transitions. [2023-11-10 12:22:42,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082561417639951 [2023-11-10 12:22:42,400 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2524 transitions. [2023-11-10 12:22:42,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2524 transitions. [2023-11-10 12:22:42,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:22:42,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2524 transitions. [2023-11-10 12:22:42,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 97.07692307692308) internal successors, (2524), 26 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:42,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 191.0) internal successors, (5157), 27 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:42,431 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 191.0) internal successors, (5157), 27 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:42,431 INFO L175 Difference]: Start difference. First operand has 476 places, 563 transitions, 6389 flow. Second operand 26 states and 2524 transitions. [2023-11-10 12:22:42,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 650 transitions, 8731 flow [2023-11-10 12:22:48,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 650 transitions, 7750 flow, removed 416 selfloop flow, removed 62 redundant places. [2023-11-10 12:22:48,824 INFO L231 Difference]: Finished difference. Result has 429 places, 567 transitions, 6035 flow [2023-11-10 12:22:48,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=5572, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6035, PETRI_PLACES=429, PETRI_TRANSITIONS=567} [2023-11-10 12:22:48,826 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 249 predicate places. [2023-11-10 12:22:48,826 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 567 transitions, 6035 flow [2023-11-10 12:22:48,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 94.2) internal successors, (1884), 20 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:48,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:22:48,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:22:48,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-10 12:22:49,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-10 12:22:49,032 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 1 more)] === [2023-11-10 12:22:49,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:22:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1038904641, now seen corresponding path program 15 times [2023-11-10 12:22:49,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:22:49,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75112383] [2023-11-10 12:22:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:22:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:22:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:22:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:22:50,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:22:50,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75112383] [2023-11-10 12:22:50,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75112383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:22:50,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060628545] [2023-11-10 12:22:50,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:22:50,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:22:50,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:22:50,978 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:22:50,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-10 12:22:51,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-10 12:22:51,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:22:51,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-10 12:22:51,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:22:51,106 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-10 12:22:51,182 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-10 12:22:51,186 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-10 12:22:51,626 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-10 12:22:51,834 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:22:51,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:22:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:22:51,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:22:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060628545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:22:51,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:22:51,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [33] total 48 [2023-11-10 12:22:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971202849] [2023-11-10 12:22:51,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:22:51,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-10 12:22:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:22:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-10 12:22:51,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2115, Unknown=0, NotChecked=0, Total=2256 [2023-11-10 12:22:51,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 191 [2023-11-10 12:22:51,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 567 transitions, 6035 flow. Second operand has 20 states, 20 states have (on average 94.2) internal successors, (1884), 20 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:22:51,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:22:51,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 191 [2023-11-10 12:22:51,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:00,438 INFO L124 PetriNetUnfolderBase]: 12752/30240 cut-off events. [2023-11-10 12:23:00,438 INFO L125 PetriNetUnfolderBase]: For 764467/765313 co-relation queries the response was YES. [2023-11-10 12:23:00,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193747 conditions, 30240 events. 12752/30240 cut-off events. For 764467/765313 co-relation queries the response was YES. Maximal size of possible extension queue 1776. Compared 352765 event pairs, 4136 based on Foata normal form. 85/29703 useless extension candidates. Maximal degree in co-relation 193479. Up to 12098 conditions per place. [2023-11-10 12:23:01,083 INFO L140 encePairwiseOnDemand]: 167/191 looper letters, 276 selfloop transitions, 132 changer transitions 168/683 dead transitions. [2023-11-10 12:23:01,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 683 transitions, 8698 flow [2023-11-10 12:23:01,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-10 12:23:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-10 12:23:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2730 transitions. [2023-11-10 12:23:01,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104712041884817 [2023-11-10 12:23:01,086 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2730 transitions. [2023-11-10 12:23:01,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2730 transitions. [2023-11-10 12:23:01,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:01,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2730 transitions. [2023-11-10 12:23:01,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 97.5) internal successors, (2730), 28 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:01,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 191.0) internal successors, (5539), 29 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:01,092 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 191.0) internal successors, (5539), 29 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:01,092 INFO L175 Difference]: Start difference. First operand has 429 places, 567 transitions, 6035 flow. Second operand 28 states and 2730 transitions. [2023-11-10 12:23:01,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 683 transitions, 8698 flow [2023-11-10 12:23:06,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 683 transitions, 8208 flow, removed 11 selfloop flow, removed 24 redundant places. [2023-11-10 12:23:06,547 INFO L231 Difference]: Finished difference. Result has 435 places, 474 transitions, 4628 flow [2023-11-10 12:23:06,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=5564, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4628, PETRI_PLACES=435, PETRI_TRANSITIONS=474} [2023-11-10 12:23:06,548 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 255 predicate places. [2023-11-10 12:23:06,548 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 474 transitions, 4628 flow [2023-11-10 12:23:06,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 94.2) internal successors, (1884), 20 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:06,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:06,548 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:06,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-10 12:23:06,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-10 12:23:06,760 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 1 more)] === [2023-11-10 12:23:06,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2037379077, now seen corresponding path program 16 times [2023-11-10 12:23:06,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:06,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224765145] [2023-11-10 12:23:06,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:07,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:07,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224765145] [2023-11-10 12:23:07,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224765145] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:23:07,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347592424] [2023-11-10 12:23:07,722 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:23:07,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:07,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:23:07,734 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:23:07,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-10 12:23:07,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:23:07,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:23:07,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-10 12:23:07,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:23:08,757 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:23:08,757 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 32 [2023-11-10 12:23:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:08,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:23:08,998 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-11-10 12:23:08,998 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 90 [2023-11-10 12:23:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:23:09,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347592424] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-10 12:23:09,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-10 12:23:09,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [28, 26] total 60 [2023-11-10 12:23:09,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763867505] [2023-11-10 12:23:09,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:09,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-10 12:23:09,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:09,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-10 12:23:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=3281, Unknown=0, NotChecked=0, Total=3540 [2023-11-10 12:23:09,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 191 [2023-11-10 12:23:09,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 474 transitions, 4628 flow. Second operand has 18 states, 18 states have (on average 111.94444444444444) internal successors, (2015), 18 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:09,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:09,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 191 [2023-11-10 12:23:09,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:16,273 INFO L124 PetriNetUnfolderBase]: 12305/28327 cut-off events. [2023-11-10 12:23:16,273 INFO L125 PetriNetUnfolderBase]: For 730486/731252 co-relation queries the response was YES. [2023-11-10 12:23:16,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185152 conditions, 28327 events. 12305/28327 cut-off events. For 730486/731252 co-relation queries the response was YES. Maximal size of possible extension queue 1623. Compared 322007 event pairs, 1684 based on Foata normal form. 81/27941 useless extension candidates. Maximal degree in co-relation 185017. Up to 7854 conditions per place. [2023-11-10 12:23:16,926 INFO L140 encePairwiseOnDemand]: 172/191 looper letters, 405 selfloop transitions, 120 changer transitions 18/667 dead transitions. [2023-11-10 12:23:16,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 667 transitions, 8015 flow [2023-11-10 12:23:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 12:23:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 12:23:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2031 transitions. [2023-11-10 12:23:16,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6255004619648906 [2023-11-10 12:23:16,928 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2031 transitions. [2023-11-10 12:23:16,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2031 transitions. [2023-11-10 12:23:16,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:16,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2031 transitions. [2023-11-10 12:23:16,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 119.47058823529412) internal successors, (2031), 17 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:16,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:16,950 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:16,951 INFO L175 Difference]: Start difference. First operand has 435 places, 474 transitions, 4628 flow. Second operand 17 states and 2031 transitions. [2023-11-10 12:23:16,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 667 transitions, 8015 flow [2023-11-10 12:23:22,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 667 transitions, 7301 flow, removed 150 selfloop flow, removed 39 redundant places. [2023-11-10 12:23:22,429 INFO L231 Difference]: Finished difference. Result has 389 places, 506 transitions, 4955 flow [2023-11-10 12:23:22,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4955, PETRI_PLACES=389, PETRI_TRANSITIONS=506} [2023-11-10 12:23:22,430 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 209 predicate places. [2023-11-10 12:23:22,430 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 506 transitions, 4955 flow [2023-11-10 12:23:22,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 111.94444444444444) internal successors, (2015), 18 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:22,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:22,431 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:22,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-10 12:23:22,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-10 12:23:22,636 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 12:23:22,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:22,637 INFO L85 PathProgramCache]: Analyzing trace with hash -43883897, now seen corresponding path program 17 times [2023-11-10 12:23:22,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:22,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201564305] [2023-11-10 12:23:22,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:22,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:23,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201564305] [2023-11-10 12:23:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201564305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:23:23,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885096875] [2023-11-10 12:23:23,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:23:23,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:23,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:23:23,407 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:23:23,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-10 12:23:23,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-10 12:23:23,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:23:23,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-10 12:23:23,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:23:24,014 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:23:24,015 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:23:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-10 12:23:24,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:23:24,224 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-11-10 12:23:24,225 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-11-10 12:23:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:23:24,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885096875] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-10 12:23:24,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-10 12:23:24,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27, 15] total 43 [2023-11-10 12:23:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981055097] [2023-11-10 12:23:24,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:24,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 12:23:24,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 12:23:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1676, Unknown=0, NotChecked=0, Total=1806 [2023-11-10 12:23:24,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 191 [2023-11-10 12:23:24,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 506 transitions, 4955 flow. Second operand has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:24,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:24,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 191 [2023-11-10 12:23:24,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:32,498 INFO L124 PetriNetUnfolderBase]: 14377/34369 cut-off events. [2023-11-10 12:23:32,499 INFO L125 PetriNetUnfolderBase]: For 838536/839412 co-relation queries the response was YES. [2023-11-10 12:23:32,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223918 conditions, 34369 events. 14377/34369 cut-off events. For 838536/839412 co-relation queries the response was YES. Maximal size of possible extension queue 1870. Compared 408174 event pairs, 2008 based on Foata normal form. 81/33777 useless extension candidates. Maximal degree in co-relation 223400. Up to 8610 conditions per place. [2023-11-10 12:23:33,141 INFO L140 encePairwiseOnDemand]: 179/191 looper letters, 398 selfloop transitions, 182 changer transitions 10/717 dead transitions. [2023-11-10 12:23:33,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 717 transitions, 8808 flow [2023-11-10 12:23:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-10 12:23:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-10 12:23:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2467 transitions. [2023-11-10 12:23:33,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458115183246074 [2023-11-10 12:23:33,143 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2467 transitions. [2023-11-10 12:23:33,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2467 transitions. [2023-11-10 12:23:33,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:33,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2467 transitions. [2023-11-10 12:23:33,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 123.35) internal successors, (2467), 20 states have internal predecessors, (2467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:33,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 191.0) internal successors, (4011), 21 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:33,148 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 191.0) internal successors, (4011), 21 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:33,148 INFO L175 Difference]: Start difference. First operand has 389 places, 506 transitions, 4955 flow. Second operand 20 states and 2467 transitions. [2023-11-10 12:23:33,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 717 transitions, 8808 flow [2023-11-10 12:23:38,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 717 transitions, 8497 flow, removed 105 selfloop flow, removed 11 redundant places. [2023-11-10 12:23:38,588 INFO L231 Difference]: Finished difference. Result has 399 places, 572 transitions, 6146 flow [2023-11-10 12:23:38,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=4724, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6146, PETRI_PLACES=399, PETRI_TRANSITIONS=572} [2023-11-10 12:23:38,589 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 219 predicate places. [2023-11-10 12:23:38,589 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 572 transitions, 6146 flow [2023-11-10 12:23:38,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:38,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:38,589 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:38,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-10 12:23:38,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:38,795 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 12:23:38,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:38,795 INFO L85 PathProgramCache]: Analyzing trace with hash -769926387, now seen corresponding path program 18 times [2023-11-10 12:23:38,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:38,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193045169] [2023-11-10 12:23:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:38,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:41,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:41,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193045169] [2023-11-10 12:23:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193045169] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:23:41,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731639783] [2023-11-10 12:23:41,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-10 12:23:41,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:41,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:23:41,152 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:23:41,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-10 12:23:41,354 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-10 12:23:41,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:23:41,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-10 12:23:41,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:23:41,704 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:23:41,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:23:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:23:41,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:23:41,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731639783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:23:41,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:23:41,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [34] total 41 [2023-11-10 12:23:41,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235549461] [2023-11-10 12:23:41,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:23:41,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 12:23:41,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:23:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 12:23:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1527, Unknown=0, NotChecked=0, Total=1640 [2023-11-10 12:23:41,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 191 [2023-11-10 12:23:41,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 572 transitions, 6146 flow. Second operand has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:41,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:23:41,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 191 [2023-11-10 12:23:41,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:23:50,680 INFO L124 PetriNetUnfolderBase]: 14740/35129 cut-off events. [2023-11-10 12:23:50,680 INFO L125 PetriNetUnfolderBase]: For 885911/886741 co-relation queries the response was YES. [2023-11-10 12:23:51,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236496 conditions, 35129 events. 14740/35129 cut-off events. For 885911/886741 co-relation queries the response was YES. Maximal size of possible extension queue 1925. Compared 417575 event pairs, 4420 based on Foata normal form. 76/34481 useless extension candidates. Maximal degree in co-relation 235944. Up to 13769 conditions per place. [2023-11-10 12:23:51,726 INFO L140 encePairwiseOnDemand]: 177/191 looper letters, 420 selfloop transitions, 135 changer transitions 8/690 dead transitions. [2023-11-10 12:23:51,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 690 transitions, 8780 flow [2023-11-10 12:23:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 12:23:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 12:23:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2064 transitions. [2023-11-10 12:23:51,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6356636895595935 [2023-11-10 12:23:51,733 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2064 transitions. [2023-11-10 12:23:51,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2064 transitions. [2023-11-10 12:23:51,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:23:51,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2064 transitions. [2023-11-10 12:23:51,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 121.41176470588235) internal successors, (2064), 17 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:51,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:51,754 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:51,754 INFO L175 Difference]: Start difference. First operand has 399 places, 572 transitions, 6146 flow. Second operand 17 states and 2064 transitions. [2023-11-10 12:23:51,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 690 transitions, 8780 flow [2023-11-10 12:23:57,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 690 transitions, 8339 flow, removed 168 selfloop flow, removed 10 redundant places. [2023-11-10 12:23:57,091 INFO L231 Difference]: Finished difference. Result has 409 places, 596 transitions, 6599 flow [2023-11-10 12:23:57,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=5797, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6599, PETRI_PLACES=409, PETRI_TRANSITIONS=596} [2023-11-10 12:23:57,091 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 229 predicate places. [2023-11-10 12:23:57,092 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 596 transitions, 6599 flow [2023-11-10 12:23:57,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:23:57,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:23:57,092 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:23:57,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-10 12:23:57,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:57,293 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 12:23:57,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:23:57,293 INFO L85 PathProgramCache]: Analyzing trace with hash -710501285, now seen corresponding path program 19 times [2023-11-10 12:23:57,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:23:57,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378433940] [2023-11-10 12:23:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:23:57,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:23:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:23:59,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:23:59,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378433940] [2023-11-10 12:23:59,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378433940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:23:59,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140170172] [2023-11-10 12:23:59,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-10 12:23:59,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:23:59,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:23:59,306 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:23:59,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-10 12:23:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:23:59,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-10 12:23:59,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:24:00,775 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:24:00,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 28 [2023-11-10 12:24:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:24:00,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:24:01,069 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-11-10 12:24:01,070 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 90 [2023-11-10 12:24:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:24:01,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140170172] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-10 12:24:01,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-10 12:24:01,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [35, 31] total 68 [2023-11-10 12:24:01,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571997732] [2023-11-10 12:24:01,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:24:01,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-10 12:24:01,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:24:01,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-10 12:24:01,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=4146, Unknown=0, NotChecked=0, Total=4556 [2023-11-10 12:24:01,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 191 [2023-11-10 12:24:01,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 596 transitions, 6599 flow. Second operand has 18 states, 18 states have (on average 111.94444444444444) internal successors, (2015), 18 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:01,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:24:01,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 191 [2023-11-10 12:24:01,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:24:10,135 INFO L124 PetriNetUnfolderBase]: 15256/36953 cut-off events. [2023-11-10 12:24:10,135 INFO L125 PetriNetUnfolderBase]: For 920587/921478 co-relation queries the response was YES. [2023-11-10 12:24:10,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245486 conditions, 36953 events. 15256/36953 cut-off events. For 920587/921478 co-relation queries the response was YES. Maximal size of possible extension queue 2029. Compared 447328 event pairs, 2875 based on Foata normal form. 64/36319 useless extension candidates. Maximal degree in co-relation 244932. Up to 14329 conditions per place. [2023-11-10 12:24:10,990 INFO L140 encePairwiseOnDemand]: 172/191 looper letters, 414 selfloop transitions, 168 changer transitions 14/720 dead transitions. [2023-11-10 12:24:10,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 720 transitions, 9467 flow [2023-11-10 12:24:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 12:24:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 12:24:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2017 transitions. [2023-11-10 12:24:10,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6211887896519864 [2023-11-10 12:24:10,993 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2017 transitions. [2023-11-10 12:24:10,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2017 transitions. [2023-11-10 12:24:10,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:24:10,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2017 transitions. [2023-11-10 12:24:10,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 118.6470588235294) internal successors, (2017), 17 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:10,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:11,000 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:11,000 INFO L175 Difference]: Start difference. First operand has 409 places, 596 transitions, 6599 flow. Second operand 17 states and 2017 transitions. [2023-11-10 12:24:11,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 720 transitions, 9467 flow [2023-11-10 12:24:15,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 720 transitions, 9215 flow, removed 81 selfloop flow, removed 9 redundant places. [2023-11-10 12:24:15,625 INFO L231 Difference]: Finished difference. Result has 420 places, 632 transitions, 7549 flow [2023-11-10 12:24:15,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=6451, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7549, PETRI_PLACES=420, PETRI_TRANSITIONS=632} [2023-11-10 12:24:15,625 INFO L281 CegarLoopForPetriNet]: 180 programPoint places, 240 predicate places. [2023-11-10 12:24:15,625 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 632 transitions, 7549 flow [2023-11-10 12:24:15,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 111.94444444444444) internal successors, (2015), 18 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:15,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:24:15,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:24:15,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-10 12:24:15,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:24:15,837 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 12:24:15,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:24:15,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1454414681, now seen corresponding path program 20 times [2023-11-10 12:24:15,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:24:15,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007928570] [2023-11-10 12:24:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:24:15,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:24:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:24:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:24:16,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:24:16,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007928570] [2023-11-10 12:24:16,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007928570] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:24:16,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135824439] [2023-11-10 12:24:16,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:24:16,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:24:16,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:24:16,605 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:24:16,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-10 12:24:16,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-10 12:24:16,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:24:16,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-10 12:24:16,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:24:17,112 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-10 12:24:17,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-11-10 12:24:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-10 12:24:17,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:24:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135824439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:24:17,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:24:17,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [28] total 35 [2023-11-10 12:24:17,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056681810] [2023-11-10 12:24:17,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:24:17,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 12:24:17,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:24:17,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 12:24:17,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2023-11-10 12:24:17,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 191 [2023-11-10 12:24:17,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 632 transitions, 7549 flow. Second operand has 12 states, 12 states have (on average 116.66666666666667) internal successors, (1400), 12 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:17,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:24:17,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 191 [2023-11-10 12:24:17,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:24:26,237 INFO L124 PetriNetUnfolderBase]: 15245/36521 cut-off events. [2023-11-10 12:24:26,237 INFO L125 PetriNetUnfolderBase]: For 1002421/1003263 co-relation queries the response was YES. [2023-11-10 12:24:26,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252794 conditions, 36521 events. 15245/36521 cut-off events. For 1002421/1003263 co-relation queries the response was YES. Maximal size of possible extension queue 2017. Compared 437095 event pairs, 4644 based on Foata normal form. 63/35834 useless extension candidates. Maximal degree in co-relation 252267. Up to 14153 conditions per place. [2023-11-10 12:24:27,131 INFO L140 encePairwiseOnDemand]: 177/191 looper letters, 391 selfloop transitions, 144 changer transitions 51/713 dead transitions. [2023-11-10 12:24:27,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 713 transitions, 9727 flow [2023-11-10 12:24:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-10 12:24:27,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-10 12:24:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1938 transitions. [2023-11-10 12:24:27,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341623036649214 [2023-11-10 12:24:27,133 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1938 transitions. [2023-11-10 12:24:27,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1938 transitions. [2023-11-10 12:24:27,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:24:27,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1938 transitions. [2023-11-10 12:24:27,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 121.125) internal successors, (1938), 16 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:27,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:27,137 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:24:27,137 INFO L175 Difference]: Start difference. First operand has 420 places, 632 transitions, 7549 flow. Second operand 16 states and 1938 transitions. [2023-11-10 12:24:27,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 713 transitions, 9727 flow