/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -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/queue_ok_longer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:47:07,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:47:07,271 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 [2023-12-09 14:47:07,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:47:07,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:47:07,297 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:47:07,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:47:07,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:47:07,298 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:47:07,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:47:07,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:47:07,301 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:47:07,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:47:07,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:47:07,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:47:07,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:47:07,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:47:07,303 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:47:07,303 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:47:07,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:47:07,303 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:47:07,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:47:07,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:47:07,304 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:47:07,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:47:07,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:07,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:47:07,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:47:07,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:47:07,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:47:07,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:47:07,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:47:07,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:47:07,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:47:07,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:47:07,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:47:07,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:47:07,548 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:47:07,548 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:47:07,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longer.i [2023-12-09 14:47:08,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:47:08,919 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:47:08,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i [2023-12-09 14:47:08,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7505c2b77/e44afbfb0f844e23abd50cbd91d70e07/FLAGd1360033e [2023-12-09 14:47:08,966 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7505c2b77/e44afbfb0f844e23abd50cbd91d70e07 [2023-12-09 14:47:08,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:47:08,969 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:47:08,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:08,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:47:08,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:47:08,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:08" (1/1) ... [2023-12-09 14:47:08,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c9ee8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:08, skipping insertion in model container [2023-12-09 14:47:08,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:08" (1/1) ... [2023-12-09 14:47:09,078 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:47:09,412 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/queue_ok_longer.i[43272,43285] [2023-12-09 14:47:09,415 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/queue_ok_longer.i[43545,43558] [2023-12-09 14:47:09,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:09,424 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:47:09,450 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/queue_ok_longer.i[43272,43285] [2023-12-09 14:47:09,452 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/queue_ok_longer.i[43545,43558] [2023-12-09 14:47:09,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:09,497 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:47:09,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09 WrapperNode [2023-12-09 14:47:09,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:09,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:09,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:47:09,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:47:09,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,538 INFO L138 Inliner]: procedures = 275, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 208 [2023-12-09 14:47:09,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:09,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:47:09,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:47:09,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:47:09,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:47:09,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:47:09,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:47:09,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:47:09,565 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:09,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:09,621 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) [2023-12-09 14:47:09,623 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 [2023-12-09 14:47:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-12-09 14:47:09,711 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-12-09 14:47:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-12-09 14:47:09,711 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-12-09 14:47:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:47:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:47:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-09 14:47:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 14:47:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:47:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-09 14:47:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:47:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:47:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:47:09,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:47:09,713 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:47:09,825 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:47:09,827 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:47:10,103 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:47:10,133 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:47:10,133 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 14:47:10,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:10 BoogieIcfgContainer [2023-12-09 14:47:10,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:47:10,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:47:10,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:47:10,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:47:10,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:47:08" (1/3) ... [2023-12-09 14:47:10,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d55ea15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:10, skipping insertion in model container [2023-12-09 14:47:10,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (2/3) ... [2023-12-09 14:47:10,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d55ea15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:10, skipping insertion in model container [2023-12-09 14:47:10,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:10" (3/3) ... [2023-12-09 14:47:10,143 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2023-12-09 14:47:10,155 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:47:10,156 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-09 14:47:10,156 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:47:10,343 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 14:47:10,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 228 transitions, 470 flow [2023-12-09 14:47:10,485 INFO L124 PetriNetUnfolderBase]: 13/226 cut-off events. [2023-12-09 14:47:10,485 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:47:10,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 226 events. 13/226 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 375 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2023-12-09 14:47:10,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 228 transitions, 470 flow [2023-12-09 14:47:10,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 216 transitions, 441 flow [2023-12-09 14:47:10,508 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:47:10,513 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;@6b35b8ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:47:10,513 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 14:47:10,529 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:47:10,530 INFO L124 PetriNetUnfolderBase]: 1/58 cut-off events. [2023-12-09 14:47:10,530 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:47:10,530 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:10,530 INFO L233 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] [2023-12-09 14:47:10,531 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 2 more)] === [2023-12-09 14:47:10,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash -484014062, now seen corresponding path program 1 times [2023-12-09 14:47:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:10,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680170811] [2023-12-09 14:47:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:10,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:10,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:10,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680170811] [2023-12-09 14:47:10,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680170811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:10,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:10,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 14:47:10,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186518171] [2023-12-09 14:47:10,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:10,814 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 14:47:10,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 14:47:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 14:47:10,841 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 228 [2023-12-09 14:47:10,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 216 transitions, 441 flow. Second operand has 2 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:10,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 228 [2023-12-09 14:47:10,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:10,949 INFO L124 PetriNetUnfolderBase]: 26/374 cut-off events. [2023-12-09 14:47:10,949 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-12-09 14:47:10,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 374 events. 26/374 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1274 event pairs, 8 based on Foata normal form. 10/364 useless extension candidates. Maximal degree in co-relation 325. Up to 24 conditions per place. [2023-12-09 14:47:10,953 INFO L140 encePairwiseOnDemand]: 224/228 looper letters, 7 selfloop transitions, 0 changer transitions 3/207 dead transitions. [2023-12-09 14:47:10,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 207 transitions, 437 flow [2023-12-09 14:47:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 14:47:10,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 14:47:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 437 transitions. [2023-12-09 14:47:10,964 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2023-12-09 14:47:10,964 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 437 transitions. [2023-12-09 14:47:10,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 437 transitions. [2023-12-09 14:47:10,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:10,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 437 transitions. [2023-12-09 14:47:10,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,974 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,977 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, -4 predicate places. [2023-12-09 14:47:10,977 INFO L500 AbstractCegarLoop]: Abstraction has has 206 places, 207 transitions, 437 flow [2023-12-09 14:47:10,977 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:10,978 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:10,978 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:10,978 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:47:10,978 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:47:10,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash 559808428, now seen corresponding path program 1 times [2023-12-09 14:47:10,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:10,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106543671] [2023-12-09 14:47:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:10,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:12,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:12,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106543671] [2023-12-09 14:47:12,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106543671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:12,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:12,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-09 14:47:12,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777316750] [2023-12-09 14:47:12,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:12,114 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 14:47:12,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:12,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 14:47:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-09 14:47:12,123 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 228 [2023-12-09 14:47:12,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 207 transitions, 437 flow. Second operand has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 12 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:12,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 228 [2023-12-09 14:47:12,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:12,953 INFO L124 PetriNetUnfolderBase]: 841/3185 cut-off events. [2023-12-09 14:47:12,954 INFO L125 PetriNetUnfolderBase]: For 287/289 co-relation queries the response was YES. [2023-12-09 14:47:12,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4677 conditions, 3185 events. 841/3185 cut-off events. For 287/289 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 25285 event pairs, 621 based on Foata normal form. 0/2968 useless extension candidates. Maximal degree in co-relation 4301. Up to 1207 conditions per place. [2023-12-09 14:47:12,974 INFO L140 encePairwiseOnDemand]: 211/228 looper letters, 46 selfloop transitions, 16 changer transitions 0/203 dead transitions. [2023-12-09 14:47:12,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 203 transitions, 553 flow [2023-12-09 14:47:12,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-09 14:47:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-09 14:47:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1923 transitions. [2023-12-09 14:47:12,982 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7028508771929824 [2023-12-09 14:47:12,982 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1923 transitions. [2023-12-09 14:47:12,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1923 transitions. [2023-12-09 14:47:12,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:12,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1923 transitions. [2023-12-09 14:47:12,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 160.25) internal successors, (1923), 12 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 228.0) internal successors, (2964), 13 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,994 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 228.0) internal successors, (2964), 13 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,996 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, 4 predicate places. [2023-12-09 14:47:12,996 INFO L500 AbstractCegarLoop]: Abstraction has has 214 places, 203 transitions, 553 flow [2023-12-09 14:47:12,997 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 12 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:12,998 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:12,998 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:12,998 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:47:12,999 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:47:13,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash 348938573, now seen corresponding path program 1 times [2023-12-09 14:47:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960658542] [2023-12-09 14:47:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:13,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960658542] [2023-12-09 14:47:13,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960658542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:13,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:13,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:47:13,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770534272] [2023-12-09 14:47:13,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:13,162 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:47:13,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:13,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:47:13,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:47:13,166 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 228 [2023-12-09 14:47:13,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 203 transitions, 553 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:13,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 228 [2023-12-09 14:47:13,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:13,291 INFO L124 PetriNetUnfolderBase]: 306/1259 cut-off events. [2023-12-09 14:47:13,291 INFO L125 PetriNetUnfolderBase]: For 747/783 co-relation queries the response was YES. [2023-12-09 14:47:13,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 1259 events. 306/1259 cut-off events. For 747/783 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7494 event pairs, 222 based on Foata normal form. 0/1167 useless extension candidates. Maximal degree in co-relation 1781. Up to 485 conditions per place. [2023-12-09 14:47:13,300 INFO L140 encePairwiseOnDemand]: 224/228 looper letters, 12 selfloop transitions, 2 changer transitions 9/209 dead transitions. [2023-12-09 14:47:13,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 209 transitions, 629 flow [2023-12-09 14:47:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:47:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:47:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-12-09 14:47:13,302 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9371345029239766 [2023-12-09 14:47:13,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-12-09 14:47:13,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-12-09 14:47:13,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:13,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-12-09 14:47:13,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,307 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, 6 predicate places. [2023-12-09 14:47:13,308 INFO L500 AbstractCegarLoop]: Abstraction has has 216 places, 209 transitions, 629 flow [2023-12-09 14:47:13,308 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,308 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:13,309 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:13,309 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:47:13,309 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:47:13,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:13,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1606788658, now seen corresponding path program 1 times [2023-12-09 14:47:13,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:13,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659011354] [2023-12-09 14:47:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:13,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659011354] [2023-12-09 14:47:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659011354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:13,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:13,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:47:13,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293973760] [2023-12-09 14:47:13,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:13,425 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:47:13,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:47:13,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:47:13,427 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 228 [2023-12-09 14:47:13,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 209 transitions, 629 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:13,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 228 [2023-12-09 14:47:13,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:13,630 INFO L124 PetriNetUnfolderBase]: 447/1756 cut-off events. [2023-12-09 14:47:13,631 INFO L125 PetriNetUnfolderBase]: For 2178/2255 co-relation queries the response was YES. [2023-12-09 14:47:13,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 1756 events. 447/1756 cut-off events. For 2178/2255 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10388 event pairs, 294 based on Foata normal form. 2/1669 useless extension candidates. Maximal degree in co-relation 3089. Up to 702 conditions per place. [2023-12-09 14:47:13,641 INFO L140 encePairwiseOnDemand]: 225/228 looper letters, 21 selfloop transitions, 2 changer transitions 6/216 dead transitions. [2023-12-09 14:47:13,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 216 transitions, 718 flow [2023-12-09 14:47:13,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:47:13,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:47:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-12-09 14:47:13,643 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.935672514619883 [2023-12-09 14:47:13,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-12-09 14:47:13,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-12-09 14:47:13,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:13,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-12-09 14:47:13,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,648 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,649 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, 8 predicate places. [2023-12-09 14:47:13,649 INFO L500 AbstractCegarLoop]: Abstraction has has 218 places, 216 transitions, 718 flow [2023-12-09 14:47:13,650 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:13,650 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:13,650 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:13,650 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:47:13,651 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:47:13,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1287457348, now seen corresponding path program 1 times [2023-12-09 14:47:13,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:13,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630000156] [2023-12-09 14:47:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:13,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:13,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:13,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630000156] [2023-12-09 14:47:13,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630000156] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:13,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772845149] [2023-12-09 14:47:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:13,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:13,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:13,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:13,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 14:47:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:13,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-09 14:47:13,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:13,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-09 14:47:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 14:47:14,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 14:47:14,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772845149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:14,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 14:47:14,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-09 14:47:14,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355933902] [2023-12-09 14:47:14,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:14,003 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:47:14,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:14,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:47:14,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:47:14,004 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 228 [2023-12-09 14:47:14,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 216 transitions, 718 flow. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:14,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:14,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 228 [2023-12-09 14:47:14,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:14,112 INFO L124 PetriNetUnfolderBase]: 201/1116 cut-off events. [2023-12-09 14:47:14,113 INFO L125 PetriNetUnfolderBase]: For 1887/1912 co-relation queries the response was YES. [2023-12-09 14:47:14,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2124 conditions, 1116 events. 201/1116 cut-off events. For 1887/1912 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5780 event pairs, 111 based on Foata normal form. 62/1125 useless extension candidates. Maximal degree in co-relation 1578. Up to 383 conditions per place. [2023-12-09 14:47:14,117 INFO L140 encePairwiseOnDemand]: 224/228 looper letters, 15 selfloop transitions, 3 changer transitions 10/218 dead transitions. [2023-12-09 14:47:14,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 218 transitions, 798 flow [2023-12-09 14:47:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:47:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:47:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-12-09 14:47:14,119 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9298245614035088 [2023-12-09 14:47:14,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-12-09 14:47:14,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-12-09 14:47:14,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:14,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-12-09 14:47:14,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:14,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:14,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:14,147 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, 10 predicate places. [2023-12-09 14:47:14,149 INFO L500 AbstractCegarLoop]: Abstraction has has 220 places, 218 transitions, 798 flow [2023-12-09 14:47:14,149 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:14,152 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:14,153 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:14,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 14:47:14,358 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:14,359 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:47:14,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:14,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1206536814, now seen corresponding path program 1 times [2023-12-09 14:47:14,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:14,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716403883] [2023-12-09 14:47:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:14,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:14,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:14,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716403883] [2023-12-09 14:47:14,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716403883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:14,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903236206] [2023-12-09 14:47:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:14,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:14,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:14,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:14,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 14:47:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:14,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 14:47:14,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:14,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:14,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903236206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:14,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:14,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-09 14:47:14,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144365118] [2023-12-09 14:47:14,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:14,800 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 14:47:14,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:14,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 14:47:14,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-09 14:47:14,804 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 228 [2023-12-09 14:47:14,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 218 transitions, 798 flow. Second operand has 10 states, 10 states have (on average 207.5) internal successors, (2075), 10 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:14,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:14,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 228 [2023-12-09 14:47:14,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:15,016 INFO L124 PetriNetUnfolderBase]: 254/1403 cut-off events. [2023-12-09 14:47:15,016 INFO L125 PetriNetUnfolderBase]: For 2153/2196 co-relation queries the response was YES. [2023-12-09 14:47:15,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2877 conditions, 1403 events. 254/1403 cut-off events. For 2153/2196 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 6417 event pairs, 154 based on Foata normal form. 1/1344 useless extension candidates. Maximal degree in co-relation 2306. Up to 491 conditions per place. [2023-12-09 14:47:15,024 INFO L140 encePairwiseOnDemand]: 222/228 looper letters, 27 selfloop transitions, 9 changer transitions 10/231 dead transitions. [2023-12-09 14:47:15,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 231 transitions, 998 flow [2023-12-09 14:47:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:47:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:47:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1880 transitions. [2023-12-09 14:47:15,028 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9161793372319688 [2023-12-09 14:47:15,028 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1880 transitions. [2023-12-09 14:47:15,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1880 transitions. [2023-12-09 14:47:15,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:15,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1880 transitions. [2023-12-09 14:47:15,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.88888888888889) internal successors, (1880), 9 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:15,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 228.0) internal successors, (2280), 10 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:15,035 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 228.0) internal successors, (2280), 10 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:15,038 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, 18 predicate places. [2023-12-09 14:47:15,038 INFO L500 AbstractCegarLoop]: Abstraction has has 228 places, 231 transitions, 998 flow [2023-12-09 14:47:15,039 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 207.5) internal successors, (2075), 10 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:15,039 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:15,040 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:15,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 14:47:15,244 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-09 14:47:15,245 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:47:15,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1536100156, now seen corresponding path program 2 times [2023-12-09 14:47:15,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:15,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740351194] [2023-12-09 14:47:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:15,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:15,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:15,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740351194] [2023-12-09 14:47:15,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740351194] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:15,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452676665] [2023-12-09 14:47:15,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:47:15,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:15,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:15,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:15,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 14:47:15,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:47:15,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:15,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 14:47:15,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:15,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:15,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452676665] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:15,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:15,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-09 14:47:15,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627402810] [2023-12-09 14:47:15,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:15,856 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 14:47:15,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:15,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 14:47:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-09 14:47:15,859 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 228 [2023-12-09 14:47:15,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 231 transitions, 998 flow. Second operand has 18 states, 18 states have (on average 207.5) internal successors, (3735), 18 states have internal predecessors, (3735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:15,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:15,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 228 [2023-12-09 14:47:15,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:16,333 INFO L124 PetriNetUnfolderBase]: 454/2521 cut-off events. [2023-12-09 14:47:16,333 INFO L125 PetriNetUnfolderBase]: For 4237/4297 co-relation queries the response was YES. [2023-12-09 14:47:16,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5426 conditions, 2521 events. 454/2521 cut-off events. For 4237/4297 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 11982 event pairs, 261 based on Foata normal form. 1/2439 useless extension candidates. Maximal degree in co-relation 4814. Up to 906 conditions per place. [2023-12-09 14:47:16,345 INFO L140 encePairwiseOnDemand]: 222/228 looper letters, 51 selfloop transitions, 21 changer transitions 10/267 dead transitions. [2023-12-09 14:47:16,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 267 transitions, 1546 flow [2023-12-09 14:47:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 14:47:16,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 14:47:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4374 transitions. [2023-12-09 14:47:16,352 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9135338345864662 [2023-12-09 14:47:16,352 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4374 transitions. [2023-12-09 14:47:16,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4374 transitions. [2023-12-09 14:47:16,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:16,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4374 transitions. [2023-12-09 14:47:16,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 208.28571428571428) internal successors, (4374), 21 states have internal predecessors, (4374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:16,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 228.0) internal successors, (5016), 22 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:16,365 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 228.0) internal successors, (5016), 22 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:16,366 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, 38 predicate places. [2023-12-09 14:47:16,366 INFO L500 AbstractCegarLoop]: Abstraction has has 248 places, 267 transitions, 1546 flow [2023-12-09 14:47:16,367 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 207.5) internal successors, (3735), 18 states have internal predecessors, (3735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:16,367 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:16,367 INFO L233 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:16,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-09 14:47:16,572 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:16,573 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:47:16,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:16,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1357434690, now seen corresponding path program 3 times [2023-12-09 14:47:16,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:16,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306880216] [2023-12-09 14:47:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:16,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 679 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:17,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:17,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306880216] [2023-12-09 14:47:17,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306880216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:17,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703109625] [2023-12-09 14:47:17,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 14:47:17,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:17,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:17,073 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:17,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 14:47:17,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 14:47:17,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:17,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-09 14:47:17,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:18,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-09 14:47:18,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:18,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:18,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:18,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-09 14:47:18,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-09 14:47:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2023-12-09 14:47:18,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 14:47:18,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703109625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:18,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 14:47:18,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [17] total 28 [2023-12-09 14:47:18,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146023073] [2023-12-09 14:47:18,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:18,761 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-09 14:47:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:18,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-09 14:47:18,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2023-12-09 14:47:18,763 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 228 [2023-12-09 14:47:18,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 267 transitions, 1546 flow. Second operand has 13 states, 13 states have (on average 161.53846153846155) internal successors, (2100), 13 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:18,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:18,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 228 [2023-12-09 14:47:18,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:19,824 INFO L124 PetriNetUnfolderBase]: 1158/4647 cut-off events. [2023-12-09 14:47:19,824 INFO L125 PetriNetUnfolderBase]: For 12788/12931 co-relation queries the response was YES. [2023-12-09 14:47:19,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13497 conditions, 4647 events. 1158/4647 cut-off events. For 12788/12931 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 27423 event pairs, 96 based on Foata normal form. 1/4532 useless extension candidates. Maximal degree in co-relation 12432. Up to 1983 conditions per place. [2023-12-09 14:47:19,848 INFO L140 encePairwiseOnDemand]: 209/228 looper letters, 187 selfloop transitions, 26 changer transitions 13/386 dead transitions. [2023-12-09 14:47:19,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 386 transitions, 3592 flow [2023-12-09 14:47:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:47:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:47:19,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2131 transitions. [2023-12-09 14:47:19,852 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7189608636977058 [2023-12-09 14:47:19,852 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2131 transitions. [2023-12-09 14:47:19,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2131 transitions. [2023-12-09 14:47:19,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:19,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2131 transitions. [2023-12-09 14:47:19,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 163.92307692307693) internal successors, (2131), 13 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 228.0) internal successors, (3192), 14 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,859 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 228.0) internal successors, (3192), 14 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,860 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, 50 predicate places. [2023-12-09 14:47:19,860 INFO L500 AbstractCegarLoop]: Abstraction has has 260 places, 386 transitions, 3592 flow [2023-12-09 14:47:19,861 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 161.53846153846155) internal successors, (2100), 13 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:19,861 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:19,861 INFO L233 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:19,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 14:47:20,066 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:20,066 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:47:20,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:20,067 INFO L85 PathProgramCache]: Analyzing trace with hash 483837613, now seen corresponding path program 1 times [2023-12-09 14:47:20,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:20,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975672057] [2023-12-09 14:47:20,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:20,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 0 proven. 667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:20,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:20,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975672057] [2023-12-09 14:47:20,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975672057] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:20,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482628892] [2023-12-09 14:47:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:20,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:20,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:20,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:20,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 14:47:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:20,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 14:47:20,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 0 proven. 667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:20,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 0 proven. 667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482628892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:21,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2023-12-09 14:47:21,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744762489] [2023-12-09 14:47:21,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:21,394 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 14:47:21,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 14:47:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 14:47:21,399 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 228 [2023-12-09 14:47:21,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 386 transitions, 3592 flow. Second operand has 34 states, 34 states have (on average 207.5) internal successors, (7055), 34 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:21,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:21,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 228 [2023-12-09 14:47:21,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:23,669 INFO L124 PetriNetUnfolderBase]: 2362/9179 cut-off events. [2023-12-09 14:47:23,669 INFO L125 PetriNetUnfolderBase]: For 30173/30369 co-relation queries the response was YES. [2023-12-09 14:47:23,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28434 conditions, 9179 events. 2362/9179 cut-off events. For 30173/30369 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 55043 event pairs, 136 based on Foata normal form. 2/9005 useless extension candidates. Maximal degree in co-relation 27316. Up to 4051 conditions per place. [2023-12-09 14:47:23,710 INFO L140 encePairwiseOnDemand]: 222/228 looper letters, 265 selfloop transitions, 45 changer transitions 13/546 dead transitions. [2023-12-09 14:47:23,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 546 transitions, 7014 flow [2023-12-09 14:47:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-09 14:47:23,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-12-09 14:47:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 9362 transitions. [2023-12-09 14:47:23,723 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9124756335282651 [2023-12-09 14:47:23,723 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 9362 transitions. [2023-12-09 14:47:23,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 9362 transitions. [2023-12-09 14:47:23,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:23,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 9362 transitions. [2023-12-09 14:47:23,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 208.04444444444445) internal successors, (9362), 45 states have internal predecessors, (9362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:23,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 228.0) internal successors, (10488), 46 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:23,748 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 228.0) internal successors, (10488), 46 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:23,749 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, 94 predicate places. [2023-12-09 14:47:23,749 INFO L500 AbstractCegarLoop]: Abstraction has has 304 places, 546 transitions, 7014 flow [2023-12-09 14:47:23,750 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 207.5) internal successors, (7055), 34 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:23,750 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:23,750 INFO L233 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:23,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 14:47:23,956 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:23,956 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:47:23,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:23,957 INFO L85 PathProgramCache]: Analyzing trace with hash -793582591, now seen corresponding path program 2 times [2023-12-09 14:47:23,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:23,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137555747] [2023-12-09 14:47:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:23,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3347 backedges. 0 proven. 3347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:25,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:25,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137555747] [2023-12-09 14:47:25,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137555747] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:25,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396661132] [2023-12-09 14:47:25,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:47:25,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:25,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:25,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:25,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 14:47:25,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:47:25,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:25,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-09 14:47:25,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3347 backedges. 0 proven. 3347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:26,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3347 backedges. 0 proven. 3347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:27,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396661132] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:27,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:27,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2023-12-09 14:47:27,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347419154] [2023-12-09 14:47:27,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:27,285 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-09 14:47:27,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-09 14:47:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2023-12-09 14:47:27,295 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 228 [2023-12-09 14:47:27,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 546 transitions, 7014 flow. Second operand has 66 states, 66 states have (on average 207.5) internal successors, (13695), 66 states have internal predecessors, (13695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:27,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:27,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 228 [2023-12-09 14:47:27,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:34,923 INFO L124 PetriNetUnfolderBase]: 4771/18235 cut-off events. [2023-12-09 14:47:34,924 INFO L125 PetriNetUnfolderBase]: For 71471/71749 co-relation queries the response was YES. [2023-12-09 14:47:34,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59829 conditions, 18235 events. 4771/18235 cut-off events. For 71471/71749 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 109974 event pairs, 224 based on Foata normal form. 2/17939 useless extension candidates. Maximal degree in co-relation 58656. Up to 8189 conditions per place. [2023-12-09 14:47:35,018 INFO L140 encePairwiseOnDemand]: 222/228 looper letters, 536 selfloop transitions, 93 changer transitions 14/866 dead transitions. [2023-12-09 14:47:35,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 866 transitions, 14500 flow [2023-12-09 14:47:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-09 14:47:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-12-09 14:47:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 19338 transitions. [2023-12-09 14:47:35,032 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9119977362761743 [2023-12-09 14:47:35,032 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 19338 transitions. [2023-12-09 14:47:35,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 19338 transitions. [2023-12-09 14:47:35,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:35,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 19338 transitions. [2023-12-09 14:47:35,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 207.93548387096774) internal successors, (19338), 93 states have internal predecessors, (19338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:35,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 228.0) internal successors, (21432), 94 states have internal predecessors, (21432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:35,080 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 228.0) internal successors, (21432), 94 states have internal predecessors, (21432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:35,081 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, 186 predicate places. [2023-12-09 14:47:35,081 INFO L500 AbstractCegarLoop]: Abstraction has has 396 places, 866 transitions, 14500 flow [2023-12-09 14:47:35,084 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 207.5) internal successors, (13695), 66 states have internal predecessors, (13695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:35,084 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:35,084 INFO L233 CegarLoopForPetriNet]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:35,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 14:47:35,290 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:35,291 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:47:35,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:35,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1030497961, now seen corresponding path program 3 times [2023-12-09 14:47:35,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:35,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355969514] [2023-12-09 14:47:35,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:35,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14851 backedges. 0 proven. 14851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:39,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:39,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355969514] [2023-12-09 14:47:39,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355969514] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:39,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514356997] [2023-12-09 14:47:39,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 14:47:39,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:39,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:39,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:39,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 14:47:40,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-09 14:47:40,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:40,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-09 14:47:40,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:43,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-09 14:47:43,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:43,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:44,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:44,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-09 14:47:44,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-09 14:47:44,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-12-09 14:47:44,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:44,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-09 14:47:44,573 INFO L349 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2023-12-09 14:47:44,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-12-09 14:47:44,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-09 14:47:44,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-09 14:47:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14851 backedges. 1921 proven. 694 refuted. 0 times theorem prover too weak. 12236 trivial. 0 not checked. [2023-12-09 14:47:44,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:52,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:47:52,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 81 [2023-12-09 14:47:52,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:47:52,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 96 [2023-12-09 14:47:52,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-09 14:47:52,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2023-12-09 14:47:52,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-12-09 14:47:52,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:47:52,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 52 [2023-12-09 14:47:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 14851 backedges. 1907 proven. 708 refuted. 0 times theorem prover too weak. 12236 trivial. 0 not checked. [2023-12-09 14:47:53,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514356997] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:53,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:53,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 20, 21] total 102 [2023-12-09 14:47:53,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414498143] [2023-12-09 14:47:53,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:53,686 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-12-09 14:47:53,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:53,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-12-09 14:47:53,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1341, Invalid=8905, Unknown=56, NotChecked=0, Total=10302 [2023-12-09 14:47:53,697 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 228 [2023-12-09 14:47:53,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 866 transitions, 14500 flow. Second operand has 102 states, 102 states have (on average 153.83333333333334) internal successors, (15691), 102 states have internal predecessors, (15691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:47:53,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:53,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 228 [2023-12-09 14:47:53,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:50:20,819 INFO L124 PetriNetUnfolderBase]: 12694/42854 cut-off events. [2023-12-09 14:50:20,819 INFO L125 PetriNetUnfolderBase]: For 196980/197198 co-relation queries the response was YES. [2023-12-09 14:50:20,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172219 conditions, 42854 events. 12694/42854 cut-off events. For 196980/197198 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 320434 event pairs, 139 based on Foata normal form. 0/42548 useless extension candidates. Maximal degree in co-relation 169974. Up to 19836 conditions per place. [2023-12-09 14:50:21,116 INFO L140 encePairwiseOnDemand]: 198/228 looper letters, 4167 selfloop transitions, 2718 changer transitions 22/7032 dead transitions. [2023-12-09 14:50:21,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1603 places, 7032 transitions, 81781 flow [2023-12-09 14:50:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1208 states. [2023-12-09 14:50:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2023-12-09 14:50:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 182044 transitions. [2023-12-09 14:50:21,238 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6609591030556524 [2023-12-09 14:50:21,238 INFO L72 ComplementDD]: Start complementDD. Operand 1208 states and 182044 transitions. [2023-12-09 14:50:21,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1208 states and 182044 transitions. [2023-12-09 14:50:21,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:50:21,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 1208 states and 182044 transitions. [2023-12-09 14:50:21,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 1209 states, 1208 states have (on average 150.69867549668874) internal successors, (182044), 1208 states have internal predecessors, (182044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:21,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 1209 states, 1209 states have (on average 228.0) internal successors, (275652), 1209 states have internal predecessors, (275652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:21,903 INFO L81 ComplementDD]: Finished complementDD. Result has 1209 states, 1209 states have (on average 228.0) internal successors, (275652), 1209 states have internal predecessors, (275652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:21,904 INFO L308 CegarLoopForPetriNet]: 210 programPoint places, 1393 predicate places. [2023-12-09 14:50:21,904 INFO L500 AbstractCegarLoop]: Abstraction has has 1603 places, 7032 transitions, 81781 flow [2023-12-09 14:50:21,906 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 153.83333333333334) internal successors, (15691), 102 states have internal predecessors, (15691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:50:21,906 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:50:21,906 INFO L233 CegarLoopForPetriNet]: trace histogram [32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 23, 23, 23, 23, 23, 23, 23, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:50:21,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-09 14:50:22,112 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:50:22,112 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:50:22,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:50:22,113 INFO L85 PathProgramCache]: Analyzing trace with hash 650510445, now seen corresponding path program 4 times [2023-12-09 14:50:22,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:50:22,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739199473] [2023-12-09 14:50:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:50:22,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:50:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:50:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16502 backedges. 0 proven. 16502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:50:27,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:50:27,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739199473] [2023-12-09 14:50:27,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739199473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:50:27,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94030615] [2023-12-09 14:50:27,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 14:50:27,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:50:27,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:50:27,579 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:50:27,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Received shutdown request... [2023-12-09 14:51:11,336 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 14:51:11,354 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 14:51:12,361 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 [2023-12-09 14:51:12,555 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2023-12-09 14:51:12,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-09 14:51:12,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-09 14:51:12,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2023-12-09 14:51:12,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613327594] [2023-12-09 14:51:12,561 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-09 14:51:12,562 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-09 14:51:12,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:12,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-09 14:51:12,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2023-12-09 14:51:12,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137 [2023-12-09 14:51:12,581 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 228 [2023-12-09 14:51:12,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1603 places, 7032 transitions, 81781 flow. Second operand has 67 states, 67 states have (on average 207.50746268656715) internal successors, (13903), 67 states have internal predecessors, (13903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:12,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:12,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 228 [2023-12-09 14:51:12,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 14:51:12,595 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-12-09 14:51:12,595 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 14:51:12,595 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (67states, 205/228 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 16 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). [2023-12-09 14:51:12,596 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-12-09 14:51:12,596 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-12-09 14:51:12,596 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-12-09 14:51:12,597 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-12-09 14:51:12,597 INFO L457 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1] [2023-12-09 14:51:12,600 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:51:12,600 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:51:12,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:51:12 BasicIcfg [2023-12-09 14:51:12,602 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:51:12,603 INFO L158 Benchmark]: Toolchain (without parser) took 243633.81ms. Allocated memory was 389.0MB in the beginning and 2.5GB in the end (delta: 2.1GB). Free memory was 332.2MB in the beginning and 1.3GB in the end (delta: -990.4MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-09 14:51:12,603 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 216.0MB. Free memory is still 164.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:51:12,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.96ms. Allocated memory is still 389.0MB. Free memory was 332.2MB in the beginning and 301.8MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-09 14:51:12,603 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.32ms. Allocated memory is still 389.0MB. Free memory was 301.8MB in the beginning and 298.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-09 14:51:12,603 INFO L158 Benchmark]: Boogie Preprocessor took 24.59ms. Allocated memory is still 389.0MB. Free memory was 298.6MB in the beginning and 296.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:51:12,603 INFO L158 Benchmark]: RCFGBuilder took 570.16ms. Allocated memory is still 389.0MB. Free memory was 296.5MB in the beginning and 272.4MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-09 14:51:12,603 INFO L158 Benchmark]: TraceAbstraction took 242466.49ms. Allocated memory was 389.0MB in the beginning and 2.5GB in the end (delta: 2.1GB). Free memory was 271.9MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-09 14:51:12,604 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 216.0MB. Free memory is still 164.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 521.96ms. Allocated memory is still 389.0MB. Free memory was 332.2MB in the beginning and 301.8MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.32ms. Allocated memory is still 389.0MB. Free memory was 301.8MB in the beginning and 298.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.59ms. Allocated memory is still 389.0MB. Free memory was 298.6MB in the beginning and 296.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 570.16ms. Allocated memory is still 389.0MB. Free memory was 296.5MB in the beginning and 272.4MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 242466.49ms. Allocated memory was 389.0MB in the beginning and 2.5GB in the end (delta: 2.1GB). Free memory was 271.9MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1033]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (67states, 205/228 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 16 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - TimeoutResultAtElement [Line: 1049]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (67states, 205/228 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 16 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (67states, 205/228 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 16 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - TimeoutResultAtElement [Line: 1053]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (67states, 205/228 universal loopers) in iteration 12,while PetriNetUnfolder was constructing finite prefix that currently has 16 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 347 locations, 5 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: 242.2s, OverallIterations: 12, TraceHistogramMax: 32, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 161.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14591 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14591 mSDsluCounter, 2192 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2033 mSDsCounter, 1594 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7693 IncrementalHoareTripleChecker+Invalid, 9287 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1594 mSolverCounterUnsat, 159 mSDtfsCounter, 7693 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8459 GetRequests, 6815 SyntacticMatches, 1 SemanticMatches, 1643 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844624 ImplicationChecksByTransitivity, 124.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81781occurred in iteration=11, InterpolantAutomatonStates: 1412, 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: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 31.1s InterpolantComputationTime, 7770 NumberOfCodeBlocks, 6658 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 10300 ConstructedInterpolants, 44 QuantifiedInterpolants, 39348 SizeOfPredicates, 91 NumberOfNonLiveVariables, 4285 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 28980/74757 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown