/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/pthread-ext/26_stack_cas_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 11:34:27,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:34:27,135 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 11:34:27,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:34:27,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:34:27,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:34:27,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:34:27,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:34:27,169 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:34:27,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:34:27,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:34:27,173 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:34:27,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:34:27,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:34:27,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:34:27,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:34:27,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:34:27,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:34:27,175 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:34:27,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:34:27,175 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:34:27,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:34:27,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:34:27,177 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:34:27,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:34:27,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:34:27,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:34:27,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:34:27,178 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:34:27,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:34:27,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:34:27,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:34:27,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:34:27,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:34:27,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:34:27,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:34:27,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:34:27,425 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:34:27,426 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:34:27,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-11-10 11:34:28,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:34:28,859 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:34:28,859 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-11-10 11:34:28,895 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/499751bfa/ed7f975a20154e3c9c8860bf43a19fd6/FLAG1b568afcb [2023-11-10 11:34:28,906 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/499751bfa/ed7f975a20154e3c9c8860bf43a19fd6 [2023-11-10 11:34:28,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:34:28,909 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:34:28,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:34:28,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:34:28,914 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:34:28,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:34:28" (1/1) ... [2023-11-10 11:34:28,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1503ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:28, skipping insertion in model container [2023-11-10 11:34:28,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:34:28" (1/1) ... [2023-11-10 11:34:28,974 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:34:29,253 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-11-10 11:34:29,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:34:29,277 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:34:29,336 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-11-10 11:34:29,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:34:29,372 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:34:29,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29 WrapperNode [2023-11-10 11:34:29,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:34:29,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:34:29,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:34:29,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:34:29,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,421 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 187 [2023-11-10 11:34:29,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:34:29,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:34:29,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:34:29,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:34:29,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,456 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:34:29,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:34:29,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:34:29,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:34:29,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (1/1) ... [2023-11-10 11:34:29,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:34:29,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:34:29,511 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 11:34:29,520 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 11:34:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 11:34:29,544 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-10 11:34:29,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-10 11:34:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:34:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:34:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:34:29,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:34:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:34:29,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:34:29,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:34:29,547 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 11:34:29,664 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:34:29,666 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:34:29,922 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:34:30,110 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:34:30,111 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-10 11:34:30,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:34:30 BoogieIcfgContainer [2023-11-10 11:34:30,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:34:30,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:34:30,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:34:30,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:34:30,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:34:28" (1/3) ... [2023-11-10 11:34:30,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed6941a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:34:30, skipping insertion in model container [2023-11-10 11:34:30,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:34:29" (2/3) ... [2023-11-10 11:34:30,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed6941a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:34:30, skipping insertion in model container [2023-11-10 11:34:30,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:34:30" (3/3) ... [2023-11-10 11:34:30,128 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2023-11-10 11:34:30,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:34:30,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 11:34:30,144 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:34:30,216 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:34:30,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 117 transitions, 238 flow [2023-11-10 11:34:30,322 INFO L124 PetriNetUnfolderBase]: 11/128 cut-off events. [2023-11-10 11:34:30,323 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:34:30,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 128 events. 11/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 94. Up to 4 conditions per place. [2023-11-10 11:34:30,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 117 transitions, 238 flow [2023-11-10 11:34:30,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 117 transitions, 238 flow [2023-11-10 11:34:30,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:34:30,362 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;@2050ea64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:34:30,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-10 11:34:30,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:34:30,380 INFO L124 PetriNetUnfolderBase]: 3/57 cut-off events. [2023-11-10 11:34:30,380 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:34:30,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:34:30,381 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-10 11:34:30,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-10 11:34:30,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:34:30,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1412711329, now seen corresponding path program 1 times [2023-11-10 11:34:30,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:34:30,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125387599] [2023-11-10 11:34:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:34:30,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:34:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:30,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 11:34:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:30,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 11:34:30,625 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 11:34:30,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-10 11:34:30,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-10 11:34:30,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-10 11:34:30,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:34:30,629 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 11:34:30,633 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 11:34:30,633 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-10 11:34:30,709 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:34:30,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 199 transitions, 408 flow [2023-11-10 11:34:30,783 INFO L124 PetriNetUnfolderBase]: 21/223 cut-off events. [2023-11-10 11:34:30,783 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 11:34:30,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 223 events. 21/223 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 449 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 175. Up to 6 conditions per place. [2023-11-10 11:34:30,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 199 transitions, 408 flow [2023-11-10 11:34:30,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 199 transitions, 408 flow [2023-11-10 11:34:30,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:34:30,799 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;@2050ea64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:34:30,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-10 11:34:30,822 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:34:30,822 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-11-10 11:34:30,822 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 11:34:30,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:34:30,823 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2023-11-10 11:34:30,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-10 11:34:30,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:34:30,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1184291575, now seen corresponding path program 1 times [2023-11-10 11:34:30,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:34:30,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875943940] [2023-11-10 11:34:30,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:34:30,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:34:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:30,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 11:34:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:30,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 11:34:30,925 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 11:34:30,925 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-10 11:34:30,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-10 11:34:30,926 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-10 11:34:30,927 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-10 11:34:30,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:34:30,927 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 11:34:30,931 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 11:34:30,932 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-10 11:34:31,027 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:34:31,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 281 transitions, 580 flow [2023-11-10 11:34:31,146 INFO L124 PetriNetUnfolderBase]: 31/318 cut-off events. [2023-11-10 11:34:31,147 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-10 11:34:31,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 31/318 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 872 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 256. Up to 8 conditions per place. [2023-11-10 11:34:31,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 281 transitions, 580 flow [2023-11-10 11:34:31,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 281 transitions, 580 flow [2023-11-10 11:34:31,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:34:31,164 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;@2050ea64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:34:31,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-10 11:34:31,182 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:34:31,182 INFO L124 PetriNetUnfolderBase]: 11/140 cut-off events. [2023-11-10 11:34:31,182 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-10 11:34:31,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:34:31,183 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 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 11:34:31,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-10 11:34:31,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:34:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1316788736, now seen corresponding path program 1 times [2023-11-10 11:34:31,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:34:31,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463756895] [2023-11-10 11:34:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:34:31,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:34:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:31,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 11:34:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:31,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 11:34:31,261 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 11:34:31,262 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-10 11:34:31,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-10 11:34:31,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-10 11:34:31,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-10 11:34:31,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-10 11:34:31,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:34:31,263 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 11:34:31,263 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 11:34:31,263 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-10 11:34:31,346 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:34:31,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 363 transitions, 754 flow [2023-11-10 11:34:31,435 INFO L124 PetriNetUnfolderBase]: 41/413 cut-off events. [2023-11-10 11:34:31,435 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-10 11:34:31,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 413 events. 41/413 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1371 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 337. Up to 10 conditions per place. [2023-11-10 11:34:31,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 363 transitions, 754 flow [2023-11-10 11:34:31,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 363 transitions, 754 flow [2023-11-10 11:34:31,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:34:31,455 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;@2050ea64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:34:31,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-10 11:34:31,477 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:34:31,478 INFO L124 PetriNetUnfolderBase]: 15/194 cut-off events. [2023-11-10 11:34:31,478 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-10 11:34:31,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:34:31,479 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 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 11:34:31,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-10 11:34:31,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:34:31,480 INFO L85 PathProgramCache]: Analyzing trace with hash 516303562, now seen corresponding path program 1 times [2023-11-10 11:34:31,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:34:31,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783680336] [2023-11-10 11:34:31,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:34:31,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:34:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:31,534 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 11:34:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:31,569 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 11:34:31,569 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 11:34:31,569 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-10 11:34:31,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-10 11:34:31,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-11-10 11:34:31,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-10 11:34:31,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-10 11:34:31,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-10 11:34:31,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:34:31,571 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 11:34:31,571 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 11:34:31,571 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-10 11:34:31,683 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:34:31,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 410 places, 445 transitions, 930 flow [2023-11-10 11:34:31,838 INFO L124 PetriNetUnfolderBase]: 51/508 cut-off events. [2023-11-10 11:34:31,838 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-10 11:34:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 508 events. 51/508 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1866 event pairs, 0 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 426. Up to 12 conditions per place. [2023-11-10 11:34:31,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 410 places, 445 transitions, 930 flow [2023-11-10 11:34:31,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 410 places, 445 transitions, 930 flow [2023-11-10 11:34:31,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:34:31,864 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;@2050ea64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:34:31,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-10 11:34:31,898 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:34:31,898 INFO L124 PetriNetUnfolderBase]: 20/257 cut-off events. [2023-11-10 11:34:31,899 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-10 11:34:31,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:34:31,899 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 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 11:34:31,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-10 11:34:31,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:34:31,900 INFO L85 PathProgramCache]: Analyzing trace with hash 307397415, now seen corresponding path program 1 times [2023-11-10 11:34:31,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:34:31,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732861509] [2023-11-10 11:34:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:34:31,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:34:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:31,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 11:34:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:31,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 11:34:31,984 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 11:34:31,984 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-10 11:34:31,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-10 11:34:31,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-10 11:34:31,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-10 11:34:31,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-10 11:34:31,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-10 11:34:31,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-10 11:34:31,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:34:31,985 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 11:34:31,986 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 11:34:31,986 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-10 11:34:32,099 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:34:32,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 485 places, 527 transitions, 1108 flow [2023-11-10 11:34:32,330 INFO L124 PetriNetUnfolderBase]: 61/603 cut-off events. [2023-11-10 11:34:32,331 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-10 11:34:32,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 603 events. 61/603 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2399 event pairs, 0 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 527. Up to 14 conditions per place. [2023-11-10 11:34:32,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 485 places, 527 transitions, 1108 flow [2023-11-10 11:34:32,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 485 places, 527 transitions, 1108 flow [2023-11-10 11:34:32,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:34:32,370 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;@2050ea64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:34:32,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-10 11:34:32,446 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:34:32,446 INFO L124 PetriNetUnfolderBase]: 27/338 cut-off events. [2023-11-10 11:34:32,446 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-10 11:34:32,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:34:32,446 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 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 11:34:32,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-10 11:34:32,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:34:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2119145995, now seen corresponding path program 1 times [2023-11-10 11:34:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:34:32,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350636542] [2023-11-10 11:34:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:34:32,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:34:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:32,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-10 11:34:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-10 11:34:32,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-10 11:34:32,522 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-10 11:34:32,522 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-11-10 11:34:32,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-11-10 11:34:32,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-11-10 11:34:32,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-11-10 11:34:32,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-11-10 11:34:32,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-11-10 11:34:32,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-11-10 11:34:32,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-11-10 11:34:32,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:34:32,523 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-10 11:34:32,525 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-10 11:34:32,526 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-11-10 11:34:32,650 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:34:32,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 560 places, 609 transitions, 1288 flow [2023-11-10 11:34:32,882 INFO L124 PetriNetUnfolderBase]: 71/698 cut-off events. [2023-11-10 11:34:32,882 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-10 11:34:32,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 698 events. 71/698 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2945 event pairs, 0 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 629. Up to 16 conditions per place. [2023-11-10 11:34:32,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 560 places, 609 transitions, 1288 flow [2023-11-10 11:34:32,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 560 places, 609 transitions, 1288 flow [2023-11-10 11:34:32,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:34:32,920 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;@2050ea64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:34:32,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-10 11:34:32,986 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:34:32,986 INFO L124 PetriNetUnfolderBase]: 32/381 cut-off events. [2023-11-10 11:34:32,986 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-10 11:34:32,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:34:32,986 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] [2023-11-10 11:34:32,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-10 11:34:32,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:34:32,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1068717317, now seen corresponding path program 1 times [2023-11-10 11:34:32,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:34:32,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172630582] [2023-11-10 11:34:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:34:32,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:34:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:34:33,164 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 11:34:33,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:34:33,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172630582] [2023-11-10 11:34:33,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172630582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:34:33,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:34:33,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-10 11:34:33,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111531420] [2023-11-10 11:34:33,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:34:33,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-10 11:34:33,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:34:33,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-10 11:34:33,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-10 11:34:33,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 609 [2023-11-10 11:34:33,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 609 transitions, 1288 flow. Second operand has 4 states, 4 states have (on average 491.75) internal successors, (1967), 4 states have internal predecessors, (1967), 0 states have call successors, (0), 0 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 11:34:33,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:34:33,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 609 [2023-11-10 11:34:33,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand