/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:33:12,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:33:12,423 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 [2023-11-29 19:33:12,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:33:12,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:33:12,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:33:12,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:33:12,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:33:12,452 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:33:12,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:33:12,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:33:12,453 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:33:12,453 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:33:12,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:33:12,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:33:12,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:33:12,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:33:12,454 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:33:12,454 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:33:12,454 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:33:12,455 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:33:12,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:33:12,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:33:12,460 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:33:12,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:33:12,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:33:12,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:33:12,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:33:12,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:33:12,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:33:12,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:33:12,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:33:12,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:33:12,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:33:12,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:33:12,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:33:12,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:33:12,664 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:33:12,664 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:33:12,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-11-29 19:33:13,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:33:13,872 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:33:13,873 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-11-29 19:33:13,884 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a04f4254/13a3d32224834cb689835bc666aa4918/FLAG59c10d509 [2023-11-29 19:33:13,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a04f4254/13a3d32224834cb689835bc666aa4918 [2023-11-29 19:33:13,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:33:13,896 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:33:13,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:33:13,896 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:33:13,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:33:13,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:33:13" (1/1) ... [2023-11-29 19:33:13,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@266159a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:13, skipping insertion in model container [2023-11-29 19:33:13,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:33:13" (1/1) ... [2023-11-29 19:33:13,937 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:33:14,028 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-wmm/safe024_tso.i[945,958] [2023-11-29 19:33:14,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:33:14,135 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:33:14,153 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-wmm/safe024_tso.i[945,958] [2023-11-29 19:33:14,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:33:14,212 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:33:14,213 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:33:14,218 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:33:14,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14 WrapperNode [2023-11-29 19:33:14,218 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:33:14,219 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:33:14,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:33:14,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:33:14,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,267 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-29 19:33:14,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:33:14,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:33:14,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:33:14,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:33:14,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,287 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:33:14,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:33:14,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:33:14,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:33:14,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (1/1) ... [2023-11-29 19:33:14,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:33:14,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:33:14,325 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) [2023-11-29 19:33:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:33:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 19:33:14,352 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 [2023-11-29 19:33:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:33:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:33:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:33:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 19:33:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 19:33:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 19:33:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 19:33:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-29 19:33:14,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-29 19:33:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:33:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 19:33:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:33:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:33:14,364 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:33:14,457 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:33:14,458 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:33:14,566 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:33:14,572 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:33:14,573 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 19:33:14,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:14 BoogieIcfgContainer [2023-11-29 19:33:14,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:33:14,575 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:33:14,575 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:33:14,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:33:14,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:33:13" (1/3) ... [2023-11-29 19:33:14,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c8855c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:33:14, skipping insertion in model container [2023-11-29 19:33:14,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:33:14" (2/3) ... [2023-11-29 19:33:14,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c8855c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:33:14, skipping insertion in model container [2023-11-29 19:33:14,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:33:14" (3/3) ... [2023-11-29 19:33:14,579 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2023-11-29 19:33:14,597 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:33:14,598 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 19:33:14,598 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:33:14,635 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:33:14,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 200 flow [2023-11-29 19:33:14,702 INFO L124 PetriNetUnfolderBase]: 2/91 cut-off events. [2023-11-29 19:33:14,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:33:14,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-11-29 19:33:14,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 200 flow [2023-11-29 19:33:14,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2023-11-29 19:33:14,715 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:33:14,719 INFO L362 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=true, 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;@783ca6c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:33:14,719 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 19:33:14,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:33:14,735 INFO L124 PetriNetUnfolderBase]: 1/75 cut-off events. [2023-11-29 19:33:14,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:33:14,736 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:33:14,736 INFO L232 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] [2023-11-29 19:33:14,737 INFO L425 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)] === [2023-11-29 19:33:14,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:33:14,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1097224187, now seen corresponding path program 1 times [2023-11-29 19:33:14,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:33:14,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783734856] [2023-11-29 19:33:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:33:14,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:33:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:33:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:33:15,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:33:15,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783734856] [2023-11-29 19:33:15,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783734856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:33:15,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:33:15,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:33:15,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69759535] [2023-11-29 19:33:15,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:33:15,242 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:33:15,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:33:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:33:15,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:33:15,269 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 94 [2023-11-29 19:33:15,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:15,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:33:15,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 94 [2023-11-29 19:33:15,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:33:15,428 INFO L124 PetriNetUnfolderBase]: 3/101 cut-off events. [2023-11-29 19:33:15,428 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 19:33:15,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 101 events. 3/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 4/104 useless extension candidates. Maximal degree in co-relation 102. Up to 7 conditions per place. [2023-11-29 19:33:15,430 INFO L140 encePairwiseOnDemand]: 87/94 looper letters, 9 selfloop transitions, 2 changer transitions 11/85 dead transitions. [2023-11-29 19:33:15,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 221 flow [2023-11-29 19:33:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:33:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:33:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 718 transitions. [2023-11-29 19:33:15,444 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8486997635933806 [2023-11-29 19:33:15,444 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 718 transitions. [2023-11-29 19:33:15,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 718 transitions. [2023-11-29 19:33:15,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:33:15,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 718 transitions. [2023-11-29 19:33:15,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:15,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:15,457 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 94.0) internal successors, (940), 10 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:15,459 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 8 predicate places. [2023-11-29 19:33:15,459 INFO L500 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 221 flow [2023-11-29 19:33:15,460 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:15,460 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:33:15,460 INFO L232 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] [2023-11-29 19:33:15,460 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:33:15,460 INFO L425 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)] === [2023-11-29 19:33:15,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:33:15,461 INFO L85 PathProgramCache]: Analyzing trace with hash 786394524, now seen corresponding path program 1 times [2023-11-29 19:33:15,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:33:15,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753938615] [2023-11-29 19:33:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:33:15,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:33:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:33:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:33:15,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:33:15,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753938615] [2023-11-29 19:33:15,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753938615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:33:15,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:33:15,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:33:15,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577576486] [2023-11-29 19:33:15,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:33:15,673 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:33:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:33:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:33:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:33:15,674 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 94 [2023-11-29 19:33:15,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 221 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:15,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:33:15,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 94 [2023-11-29 19:33:15,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:33:15,889 INFO L124 PetriNetUnfolderBase]: 18/179 cut-off events. [2023-11-29 19:33:15,889 INFO L125 PetriNetUnfolderBase]: For 24/34 co-relation queries the response was YES. [2023-11-29 19:33:15,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 179 events. 18/179 cut-off events. For 24/34 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 609 event pairs, 0 based on Foata normal form. 3/181 useless extension candidates. Maximal degree in co-relation 264. Up to 16 conditions per place. [2023-11-29 19:33:15,891 INFO L140 encePairwiseOnDemand]: 86/94 looper letters, 10 selfloop transitions, 4 changer transitions 36/111 dead transitions. [2023-11-29 19:33:15,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 111 transitions, 420 flow [2023-11-29 19:33:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 19:33:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 19:33:15,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1012 transitions. [2023-11-29 19:33:15,894 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8281505728314239 [2023-11-29 19:33:15,894 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1012 transitions. [2023-11-29 19:33:15,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1012 transitions. [2023-11-29 19:33:15,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:33:15,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1012 transitions. [2023-11-29 19:33:15,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.84615384615384) internal successors, (1012), 13 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:15,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:15,899 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:15,899 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 20 predicate places. [2023-11-29 19:33:15,899 INFO L500 AbstractCegarLoop]: Abstraction has has 105 places, 111 transitions, 420 flow [2023-11-29 19:33:15,900 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:15,900 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:33:15,901 INFO L232 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] [2023-11-29 19:33:15,901 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:33:15,901 INFO L425 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)] === [2023-11-29 19:33:15,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:33:15,903 INFO L85 PathProgramCache]: Analyzing trace with hash -977306091, now seen corresponding path program 1 times [2023-11-29 19:33:15,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:33:15,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119933694] [2023-11-29 19:33:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:33:15,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:33:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:33:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:33:16,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:33:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119933694] [2023-11-29 19:33:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119933694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:33:16,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:33:16,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:33:16,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115241052] [2023-11-29 19:33:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:33:16,081 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:33:16,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:33:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:33:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:33:16,087 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 94 [2023-11-29 19:33:16,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 111 transitions, 420 flow. Second operand has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:33:16,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 94 [2023-11-29 19:33:16,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:33:16,274 INFO L124 PetriNetUnfolderBase]: 302/827 cut-off events. [2023-11-29 19:33:16,275 INFO L125 PetriNetUnfolderBase]: For 83/90 co-relation queries the response was YES. [2023-11-29 19:33:16,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1647 conditions, 827 events. 302/827 cut-off events. For 83/90 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5825 event pairs, 6 based on Foata normal form. 4/803 useless extension candidates. Maximal degree in co-relation 1606. Up to 236 conditions per place. [2023-11-29 19:33:16,280 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 24 selfloop transitions, 13 changer transitions 30/144 dead transitions. [2023-11-29 19:33:16,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 144 transitions, 607 flow [2023-11-29 19:33:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 19:33:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 19:33:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 800 transitions. [2023-11-29 19:33:16,282 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.851063829787234 [2023-11-29 19:33:16,282 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 800 transitions. [2023-11-29 19:33:16,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 800 transitions. [2023-11-29 19:33:16,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:33:16,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 800 transitions. [2023-11-29 19:33:16,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 94.0) internal successors, (1034), 11 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,286 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 94.0) internal successors, (1034), 11 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,287 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 29 predicate places. [2023-11-29 19:33:16,287 INFO L500 AbstractCegarLoop]: Abstraction has has 114 places, 144 transitions, 607 flow [2023-11-29 19:33:16,287 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,287 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:33:16,287 INFO L232 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] [2023-11-29 19:33:16,287 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 19:33:16,288 INFO L425 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)] === [2023-11-29 19:33:16,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:33:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash -201164532, now seen corresponding path program 1 times [2023-11-29 19:33:16,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:33:16,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672991088] [2023-11-29 19:33:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:33:16,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:33:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:33:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:33:16,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:33:16,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672991088] [2023-11-29 19:33:16,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672991088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:33:16,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:33:16,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:33:16,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403515019] [2023-11-29 19:33:16,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:33:16,420 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:33:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:33:16,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:33:16,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:33:16,422 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 94 [2023-11-29 19:33:16,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 144 transitions, 607 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:33:16,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 94 [2023-11-29 19:33:16,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:33:16,577 INFO L124 PetriNetUnfolderBase]: 256/726 cut-off events. [2023-11-29 19:33:16,577 INFO L125 PetriNetUnfolderBase]: For 142/268 co-relation queries the response was YES. [2023-11-29 19:33:16,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1838 conditions, 726 events. 256/726 cut-off events. For 142/268 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4992 event pairs, 0 based on Foata normal form. 26/719 useless extension candidates. Maximal degree in co-relation 1793. Up to 216 conditions per place. [2023-11-29 19:33:16,580 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 20 selfloop transitions, 9 changer transitions 89/178 dead transitions. [2023-11-29 19:33:16,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 178 transitions, 918 flow [2023-11-29 19:33:16,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 19:33:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 19:33:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1040 transitions. [2023-11-29 19:33:16,583 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.851063829787234 [2023-11-29 19:33:16,583 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1040 transitions. [2023-11-29 19:33:16,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1040 transitions. [2023-11-29 19:33:16,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:33:16,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1040 transitions. [2023-11-29 19:33:16,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,588 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,589 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 41 predicate places. [2023-11-29 19:33:16,589 INFO L500 AbstractCegarLoop]: Abstraction has has 126 places, 178 transitions, 918 flow [2023-11-29 19:33:16,590 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,591 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:33:16,591 INFO L232 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] [2023-11-29 19:33:16,591 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:33:16,591 INFO L425 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)] === [2023-11-29 19:33:16,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:33:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1090984680, now seen corresponding path program 1 times [2023-11-29 19:33:16,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:33:16,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064762459] [2023-11-29 19:33:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:33:16,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:33:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:33:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:33:16,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:33:16,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064762459] [2023-11-29 19:33:16,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064762459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:33:16,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:33:16,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 19:33:16,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741466960] [2023-11-29 19:33:16,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:33:16,749 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 19:33:16,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:33:16,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 19:33:16,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 19:33:16,751 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 94 [2023-11-29 19:33:16,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 178 transitions, 918 flow. Second operand has 8 states, 8 states have (on average 76.75) internal successors, (614), 8 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:33:16,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 94 [2023-11-29 19:33:16,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:33:16,928 INFO L124 PetriNetUnfolderBase]: 229/646 cut-off events. [2023-11-29 19:33:16,928 INFO L125 PetriNetUnfolderBase]: For 252/477 co-relation queries the response was YES. [2023-11-29 19:33:16,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 646 events. 229/646 cut-off events. For 252/477 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4392 event pairs, 0 based on Foata normal form. 57/676 useless extension candidates. Maximal degree in co-relation 2004. Up to 185 conditions per place. [2023-11-29 19:33:16,931 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 14 selfloop transitions, 12 changer transitions 98/184 dead transitions. [2023-11-29 19:33:16,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 184 transitions, 1200 flow [2023-11-29 19:33:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 19:33:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 19:33:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1264 transitions. [2023-11-29 19:33:16,934 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8404255319148937 [2023-11-29 19:33:16,934 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1264 transitions. [2023-11-29 19:33:16,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1264 transitions. [2023-11-29 19:33:16,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:33:16,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1264 transitions. [2023-11-29 19:33:16,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 79.0) internal successors, (1264), 16 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 94.0) internal successors, (1598), 17 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,940 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 94.0) internal successors, (1598), 17 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,942 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 44 predicate places. [2023-11-29 19:33:16,942 INFO L500 AbstractCegarLoop]: Abstraction has has 129 places, 184 transitions, 1200 flow [2023-11-29 19:33:16,942 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.75) internal successors, (614), 8 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:16,942 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:33:16,942 INFO L232 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] [2023-11-29 19:33:16,943 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 19:33:16,943 INFO L425 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)] === [2023-11-29 19:33:16,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:33:16,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1426320451, now seen corresponding path program 1 times [2023-11-29 19:33:16,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:33:16,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500939667] [2023-11-29 19:33:16,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:33:16,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:33:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:33:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:33:17,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:33:17,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500939667] [2023-11-29 19:33:17,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500939667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:33:17,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:33:17,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:33:17,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285203037] [2023-11-29 19:33:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:33:17,105 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:33:17,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:33:17,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:33:17,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:33:17,106 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 94 [2023-11-29 19:33:17,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 184 transitions, 1200 flow. Second operand has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:17,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:33:17,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 94 [2023-11-29 19:33:17,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:33:17,305 INFO L124 PetriNetUnfolderBase]: 549/1487 cut-off events. [2023-11-29 19:33:17,305 INFO L125 PetriNetUnfolderBase]: For 811/1136 co-relation queries the response was YES. [2023-11-29 19:33:17,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4825 conditions, 1487 events. 549/1487 cut-off events. For 811/1136 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 12734 event pairs, 0 based on Foata normal form. 6/1398 useless extension candidates. Maximal degree in co-relation 4769. Up to 426 conditions per place. [2023-11-29 19:33:17,312 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 22 selfloop transitions, 5 changer transitions 63/200 dead transitions. [2023-11-29 19:33:17,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 200 transitions, 1410 flow [2023-11-29 19:33:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 19:33:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 19:33:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 595 transitions. [2023-11-29 19:33:17,314 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7912234042553191 [2023-11-29 19:33:17,314 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 595 transitions. [2023-11-29 19:33:17,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 595 transitions. [2023-11-29 19:33:17,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:33:17,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 595 transitions. [2023-11-29 19:33:17,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.375) internal successors, (595), 8 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:17,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:17,316 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:17,318 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 51 predicate places. [2023-11-29 19:33:17,318 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 200 transitions, 1410 flow [2023-11-29 19:33:17,318 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:17,319 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:33:17,319 INFO L232 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] [2023-11-29 19:33:17,319 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 19:33:17,319 INFO L425 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)] === [2023-11-29 19:33:17,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:33:17,319 INFO L85 PathProgramCache]: Analyzing trace with hash -471842901, now seen corresponding path program 2 times [2023-11-29 19:33:17,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:33:17,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136829608] [2023-11-29 19:33:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:33:17,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:33:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:33:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:33:17,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:33:17,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136829608] [2023-11-29 19:33:17,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136829608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:33:17,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:33:17,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:33:17,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645411814] [2023-11-29 19:33:17,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:33:17,461 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:33:17,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:33:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:33:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:33:17,462 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 94 [2023-11-29 19:33:17,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 200 transitions, 1410 flow. Second operand has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:17,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:33:17,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 94 [2023-11-29 19:33:17,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:33:17,687 INFO L124 PetriNetUnfolderBase]: 779/2181 cut-off events. [2023-11-29 19:33:17,687 INFO L125 PetriNetUnfolderBase]: For 1462/1980 co-relation queries the response was YES. [2023-11-29 19:33:17,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7222 conditions, 2181 events. 779/2181 cut-off events. For 1462/1980 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 20607 event pairs, 3 based on Foata normal form. 9/2096 useless extension candidates. Maximal degree in co-relation 7159. Up to 597 conditions per place. [2023-11-29 19:33:17,697 INFO L140 encePairwiseOnDemand]: 84/94 looper letters, 0 selfloop transitions, 0 changer transitions 219/219 dead transitions. [2023-11-29 19:33:17,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 219 transitions, 1746 flow [2023-11-29 19:33:17,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 19:33:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 19:33:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 596 transitions. [2023-11-29 19:33:17,698 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7925531914893617 [2023-11-29 19:33:17,698 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 596 transitions. [2023-11-29 19:33:17,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 596 transitions. [2023-11-29 19:33:17,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:33:17,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 596 transitions. [2023-11-29 19:33:17,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:17,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:17,701 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 94.0) internal successors, (846), 9 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:17,701 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 56 predicate places. [2023-11-29 19:33:17,702 INFO L500 AbstractCegarLoop]: Abstraction has has 141 places, 219 transitions, 1746 flow [2023-11-29 19:33:17,702 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:33:17,706 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe024_tso.i_BEv2_AllErrorsAtOnce [2023-11-29 19:33:17,745 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 19:33:17,745 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 19:33:17,746 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 19:33:17,746 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 19:33:17,746 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 19:33:17,747 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-29 19:33:17,749 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 19:33:17,749 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 19:33:17,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:33:17 BasicIcfg [2023-11-29 19:33:17,757 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 19:33:17,757 INFO L158 Benchmark]: Toolchain (without parser) took 3861.67ms. Allocated memory is still 564.1MB. Free memory was 508.9MB in the beginning and 301.3MB in the end (delta: 207.7MB). Peak memory consumption was 210.8MB. Max. memory is 16.0GB. [2023-11-29 19:33:17,757 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 339.7MB. Free memory is still 288.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 19:33:17,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.18ms. Allocated memory is still 564.1MB. Free memory was 508.2MB in the beginning and 487.9MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-29 19:33:17,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.26ms. Allocated memory is still 564.1MB. Free memory was 487.9MB in the beginning and 485.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 19:33:17,758 INFO L158 Benchmark]: Boogie Preprocessor took 30.43ms. Allocated memory is still 564.1MB. Free memory was 485.9MB in the beginning and 484.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 19:33:17,758 INFO L158 Benchmark]: RCFGBuilder took 275.07ms. Allocated memory is still 564.1MB. Free memory was 484.4MB in the beginning and 469.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-11-29 19:33:17,758 INFO L158 Benchmark]: TraceAbstraction took 3181.57ms. Allocated memory is still 564.1MB. Free memory was 469.1MB in the beginning and 301.3MB in the end (delta: 167.8MB). Peak memory consumption was 171.0MB. Max. memory is 16.0GB. [2023-11-29 19:33:17,759 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 339.7MB. Free memory is still 288.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 322.18ms. Allocated memory is still 564.1MB. Free memory was 508.2MB in the beginning and 487.9MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.26ms. Allocated memory is still 564.1MB. Free memory was 487.9MB in the beginning and 485.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.43ms. Allocated memory is still 564.1MB. Free memory was 485.9MB in the beginning and 484.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 275.07ms. Allocated memory is still 564.1MB. Free memory was 484.4MB in the beginning and 469.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3181.57ms. Allocated memory is still 564.1MB. Free memory was 469.1MB in the beginning and 301.3MB in the end (delta: 167.8MB). Peak memory consumption was 171.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 121 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 301 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 301 mSDsluCounter, 306 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 240 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 419 IncrementalHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 66 mSDtfsCounter, 419 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1746occurred in iteration=7, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 413 ConstructedInterpolants, 0 QuantifiedInterpolants, 1367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 19:33:17,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...