/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 10:12:49,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 10:12:49,697 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 10:12:49,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 10:12:49,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 10:12:49,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 10:12:49,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 10:12:49,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 10:12:49,719 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 10:12:49,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 10:12:49,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 10:12:49,723 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 10:12:49,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 10:12:49,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 10:12:49,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 10:12:49,724 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 10:12:49,724 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 10:12:49,724 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 10:12:49,725 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 10:12:49,725 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 10:12:49,725 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 10:12:49,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 10:12:49,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 10:12:49,726 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 10:12:49,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 10:12:49,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 10:12:49,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 10:12:49,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 10:12:49,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 10:12:49,728 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 10:12:49,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 10:12:49,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 10:12:49,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 10:12:49,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 10:12:49,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 10:12:49,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 10:12:49,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 10:12:49,915 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 10:12:49,916 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 10:12:49,916 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-11-30 10:12:50,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 10:12:51,075 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 10:12:51,076 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2023-11-30 10:12:51,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be729606a/76a208126bb54989b5f258c1df92bea8/FLAGb18837a3b [2023-11-30 10:12:51,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be729606a/76a208126bb54989b5f258c1df92bea8 [2023-11-30 10:12:51,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 10:12:51,502 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 10:12:51,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 10:12:51,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 10:12:51,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 10:12:51,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5a000b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51, skipping insertion in model container [2023-11-30 10:12:51,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 10:12:51,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 10:12:51,734 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 10:12:51,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 10:12:51,805 INFO L206 MainTranslator]: Completed translation [2023-11-30 10:12:51,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51 WrapperNode [2023-11-30 10:12:51,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 10:12:51,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 10:12:51,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 10:12:51,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 10:12:51,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,854 INFO L138 Inliner]: procedures = 169, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 160 [2023-11-30 10:12:51,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 10:12:51,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 10:12:51,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 10:12:51,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 10:12:51,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,874 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 10:12:51,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 10:12:51,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 10:12:51,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 10:12:51,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (1/1) ... [2023-11-30 10:12:51,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 10:12:51,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:51,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 10:12:51,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 10:12:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 10:12:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-30 10:12:51,936 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-30 10:12:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-30 10:12:51,936 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-30 10:12:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 10:12:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 10:12:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 10:12:51,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 10:12:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 10:12:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-30 10:12:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 10:12:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 10:12:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 10:12:51,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 10:12:51,938 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 10:12:52,022 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 10:12:52,024 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 10:12:52,277 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 10:12:52,297 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 10:12:52,298 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 10:12:52,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 10:12:52 BoogieIcfgContainer [2023-11-30 10:12:52,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 10:12:52,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 10:12:52,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 10:12:52,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 10:12:52,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 10:12:51" (1/3) ... [2023-11-30 10:12:52,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d96920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 10:12:52, skipping insertion in model container [2023-11-30 10:12:52,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 10:12:51" (2/3) ... [2023-11-30 10:12:52,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d96920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 10:12:52, skipping insertion in model container [2023-11-30 10:12:52,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 10:12:52" (3/3) ... [2023-11-30 10:12:52,305 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2023-11-30 10:12:52,317 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 10:12:52,317 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-30 10:12:52,317 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 10:12:52,391 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 10:12:52,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 175 transitions, 364 flow [2023-11-30 10:12:52,482 INFO L124 PetriNetUnfolderBase]: 14/173 cut-off events. [2023-11-30 10:12:52,483 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 10:12:52,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 173 events. 14/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 388 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2023-11-30 10:12:52,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 175 transitions, 364 flow [2023-11-30 10:12:52,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 163 transitions, 335 flow [2023-11-30 10:12:52,521 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 10:12:52,526 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;@2ca66ea6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 10:12:52,526 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-30 10:12:52,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 10:12:52,550 INFO L124 PetriNetUnfolderBase]: 2/79 cut-off events. [2023-11-30 10:12:52,550 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 10:12:52,550 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:52,550 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:52,551 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:52,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash 983383160, now seen corresponding path program 1 times [2023-11-30 10:12:52,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:52,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829874070] [2023-11-30 10:12:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:52,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:52,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:52,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829874070] [2023-11-30 10:12:52,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829874070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:52,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:12:52,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:12:52,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57080952] [2023-11-30 10:12:52,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:52,832 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:12:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:52,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:12:52,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:12:52,853 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 175 [2023-11-30 10:12:52,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 163 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:52,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:52,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 175 [2023-11-30 10:12:52,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:52,990 INFO L124 PetriNetUnfolderBase]: 109/532 cut-off events. [2023-11-30 10:12:52,991 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-30 10:12:52,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 532 events. 109/532 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3125 event pairs, 50 based on Foata normal form. 107/584 useless extension candidates. Maximal degree in co-relation 737. Up to 126 conditions per place. [2023-11-30 10:12:52,996 INFO L140 encePairwiseOnDemand]: 160/175 looper letters, 39 selfloop transitions, 4 changer transitions 0/167 dead transitions. [2023-11-30 10:12:52,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 167 transitions, 438 flow [2023-11-30 10:12:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 10:12:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 10:12:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 773 transitions. [2023-11-30 10:12:53,007 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8834285714285715 [2023-11-30 10:12:53,008 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 773 transitions. [2023-11-30 10:12:53,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 773 transitions. [2023-11-30 10:12:53,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:53,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 773 transitions. [2023-11-30 10:12:53,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,019 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,022 INFO L307 CegarLoopForPetriNet]: 156 programPoint places, -5 predicate places. [2023-11-30 10:12:53,022 INFO L500 AbstractCegarLoop]: Abstraction has has 151 places, 167 transitions, 438 flow [2023-11-30 10:12:53,022 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,022 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:53,022 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:53,023 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 10:12:53,023 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:53,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash 133771599, now seen corresponding path program 1 times [2023-11-30 10:12:53,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:53,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876906058] [2023-11-30 10:12:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:53,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:53,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:53,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876906058] [2023-11-30 10:12:53,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876906058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:53,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:12:53,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:12:53,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590034714] [2023-11-30 10:12:53,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:53,128 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:12:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:53,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:12:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:12:53,129 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 175 [2023-11-30 10:12:53,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 167 transitions, 438 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:53,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 175 [2023-11-30 10:12:53,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:53,296 INFO L124 PetriNetUnfolderBase]: 292/1230 cut-off events. [2023-11-30 10:12:53,296 INFO L125 PetriNetUnfolderBase]: For 376/519 co-relation queries the response was YES. [2023-11-30 10:12:53,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2137 conditions, 1230 events. 292/1230 cut-off events. For 376/519 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9049 event pairs, 125 based on Foata normal form. 23/1084 useless extension candidates. Maximal degree in co-relation 1895. Up to 266 conditions per place. [2023-11-30 10:12:53,306 INFO L140 encePairwiseOnDemand]: 168/175 looper letters, 54 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2023-11-30 10:12:53,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 196 transitions, 667 flow [2023-11-30 10:12:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 10:12:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 10:12:53,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 763 transitions. [2023-11-30 10:12:53,309 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.872 [2023-11-30 10:12:53,309 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 763 transitions. [2023-11-30 10:12:53,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 763 transitions. [2023-11-30 10:12:53,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:53,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 763 transitions. [2023-11-30 10:12:53,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.6) internal successors, (763), 5 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,313 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,313 INFO L307 CegarLoopForPetriNet]: 156 programPoint places, -1 predicate places. [2023-11-30 10:12:53,313 INFO L500 AbstractCegarLoop]: Abstraction has has 155 places, 196 transitions, 667 flow [2023-11-30 10:12:53,314 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,314 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:53,314 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:53,314 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 10:12:53,314 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:53,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1663481879, now seen corresponding path program 1 times [2023-11-30 10:12:53,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:53,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123373893] [2023-11-30 10:12:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:53,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:53,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:53,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123373893] [2023-11-30 10:12:53,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123373893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:12:53,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099494739] [2023-11-30 10:12:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:53,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:53,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:12:53,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 10:12:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:53,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 10:12:53,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:12:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:53,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:12:53,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099494739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:53,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:12:53,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-30 10:12:53,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792741655] [2023-11-30 10:12:53,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:53,660 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 10:12:53,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:53,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 10:12:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-30 10:12:53,662 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 175 [2023-11-30 10:12:53,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 196 transitions, 667 flow. Second operand has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:53,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 175 [2023-11-30 10:12:53,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:53,851 INFO L124 PetriNetUnfolderBase]: 279/1190 cut-off events. [2023-11-30 10:12:53,852 INFO L125 PetriNetUnfolderBase]: For 727/970 co-relation queries the response was YES. [2023-11-30 10:12:53,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 1190 events. 279/1190 cut-off events. For 727/970 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8642 event pairs, 76 based on Foata normal form. 20/1055 useless extension candidates. Maximal degree in co-relation 2257. Up to 248 conditions per place. [2023-11-30 10:12:53,859 INFO L140 encePairwiseOnDemand]: 170/175 looper letters, 69 selfloop transitions, 6 changer transitions 0/205 dead transitions. [2023-11-30 10:12:53,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 205 transitions, 879 flow [2023-11-30 10:12:53,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-30 10:12:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-30 10:12:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1036 transitions. [2023-11-30 10:12:53,862 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8457142857142858 [2023-11-30 10:12:53,862 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1036 transitions. [2023-11-30 10:12:53,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1036 transitions. [2023-11-30 10:12:53,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:53,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1036 transitions. [2023-11-30 10:12:53,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.0) internal successors, (1036), 7 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,866 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 175.0) internal successors, (1400), 8 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,867 INFO L307 CegarLoopForPetriNet]: 156 programPoint places, 4 predicate places. [2023-11-30 10:12:53,868 INFO L500 AbstractCegarLoop]: Abstraction has has 160 places, 205 transitions, 879 flow [2023-11-30 10:12:53,868 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:53,868 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:53,869 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:53,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-30 10:12:54,073 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:54,074 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:54,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:54,075 INFO L85 PathProgramCache]: Analyzing trace with hash 28331178, now seen corresponding path program 1 times [2023-11-30 10:12:54,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:54,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265721701] [2023-11-30 10:12:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:54,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:12:54,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:54,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265721701] [2023-11-30 10:12:54,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265721701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:54,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:12:54,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:12:54,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702977367] [2023-11-30 10:12:54,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:54,167 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:12:54,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:54,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:12:54,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:12:54,168 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 175 [2023-11-30 10:12:54,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 205 transitions, 879 flow. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:54,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 175 [2023-11-30 10:12:54,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:54,344 INFO L124 PetriNetUnfolderBase]: 274/1178 cut-off events. [2023-11-30 10:12:54,344 INFO L125 PetriNetUnfolderBase]: For 1278/1624 co-relation queries the response was YES. [2023-11-30 10:12:54,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 1178 events. 274/1178 cut-off events. For 1278/1624 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8485 event pairs, 76 based on Foata normal form. 21/1051 useless extension candidates. Maximal degree in co-relation 2601. Up to 244 conditions per place. [2023-11-30 10:12:54,350 INFO L140 encePairwiseOnDemand]: 169/175 looper letters, 76 selfloop transitions, 8 changer transitions 0/214 dead transitions. [2023-11-30 10:12:54,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 214 transitions, 1127 flow [2023-11-30 10:12:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 10:12:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 10:12:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 736 transitions. [2023-11-30 10:12:54,352 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8411428571428572 [2023-11-30 10:12:54,352 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 736 transitions. [2023-11-30 10:12:54,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 736 transitions. [2023-11-30 10:12:54,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:54,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 736 transitions. [2023-11-30 10:12:54,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,355 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,356 INFO L307 CegarLoopForPetriNet]: 156 programPoint places, 7 predicate places. [2023-11-30 10:12:54,357 INFO L500 AbstractCegarLoop]: Abstraction has has 163 places, 214 transitions, 1127 flow [2023-11-30 10:12:54,357 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,357 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:54,357 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:54,357 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 10:12:54,357 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:54,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash -653668163, now seen corresponding path program 1 times [2023-11-30 10:12:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:54,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732305270] [2023-11-30 10:12:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:54,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:54,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732305270] [2023-11-30 10:12:54,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732305270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 10:12:54,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033797813] [2023-11-30 10:12:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:54,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:54,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 10:12:54,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 10:12:54,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-30 10:12:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:54,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 10:12:54,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 10:12:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 10:12:54,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 10:12:54,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033797813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:54,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 10:12:54,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-30 10:12:54,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186521468] [2023-11-30 10:12:54,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:54,549 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 10:12:54,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:54,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 10:12:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-30 10:12:54,550 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 175 [2023-11-30 10:12:54,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 214 transitions, 1127 flow. Second operand has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:54,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 175 [2023-11-30 10:12:54,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:54,659 INFO L124 PetriNetUnfolderBase]: 285/1188 cut-off events. [2023-11-30 10:12:54,659 INFO L125 PetriNetUnfolderBase]: For 2132/3138 co-relation queries the response was YES. [2023-11-30 10:12:54,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 1188 events. 285/1188 cut-off events. For 2132/3138 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8602 event pairs, 39 based on Foata normal form. 77/1118 useless extension candidates. Maximal degree in co-relation 2931. Up to 248 conditions per place. [2023-11-30 10:12:54,667 INFO L140 encePairwiseOnDemand]: 171/175 looper letters, 82 selfloop transitions, 5 changer transitions 0/223 dead transitions. [2023-11-30 10:12:54,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 223 transitions, 1403 flow [2023-11-30 10:12:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 10:12:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 10:12:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 604 transitions. [2023-11-30 10:12:54,669 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8628571428571429 [2023-11-30 10:12:54,669 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 604 transitions. [2023-11-30 10:12:54,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 604 transitions. [2023-11-30 10:12:54,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:54,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 604 transitions. [2023-11-30 10:12:54,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,671 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,672 INFO L307 CegarLoopForPetriNet]: 156 programPoint places, 9 predicate places. [2023-11-30 10:12:54,672 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 223 transitions, 1403 flow [2023-11-30 10:12:54,672 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,672 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 10:12:54,672 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 10:12:54,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-30 10:12:54,880 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 10:12:54,880 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-30 10:12:54,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 10:12:54,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1211123968, now seen corresponding path program 1 times [2023-11-30 10:12:54,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 10:12:54,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239766959] [2023-11-30 10:12:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 10:12:54,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 10:12:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 10:12:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-30 10:12:54,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 10:12:54,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239766959] [2023-11-30 10:12:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239766959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 10:12:54,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 10:12:54,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 10:12:54,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984116091] [2023-11-30 10:12:54,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 10:12:54,918 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 10:12:54,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 10:12:54,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 10:12:54,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 10:12:54,919 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 175 [2023-11-30 10:12:54,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 223 transitions, 1403 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:54,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 10:12:54,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 175 [2023-11-30 10:12:54,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 10:12:55,017 INFO L124 PetriNetUnfolderBase]: 271/1086 cut-off events. [2023-11-30 10:12:55,017 INFO L125 PetriNetUnfolderBase]: For 2786/4443 co-relation queries the response was YES. [2023-11-30 10:12:55,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 1086 events. 271/1086 cut-off events. For 2786/4443 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7716 event pairs, 35 based on Foata normal form. 157/1123 useless extension candidates. Maximal degree in co-relation 3098. Up to 242 conditions per place. [2023-11-30 10:12:55,022 INFO L140 encePairwiseOnDemand]: 169/175 looper letters, 0 selfloop transitions, 0 changer transitions 232/232 dead transitions. [2023-11-30 10:12:55,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 232 transitions, 1715 flow [2023-11-30 10:12:55,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 10:12:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 10:12:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2023-11-30 10:12:55,024 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8594285714285714 [2023-11-30 10:12:55,024 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2023-11-30 10:12:55,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2023-11-30 10:12:55,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 10:12:55,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2023-11-30 10:12:55,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:55,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:55,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:55,027 INFO L307 CegarLoopForPetriNet]: 156 programPoint places, 12 predicate places. [2023-11-30 10:12:55,027 INFO L500 AbstractCegarLoop]: Abstraction has has 168 places, 232 transitions, 1715 flow [2023-11-30 10:12:55,027 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 10:12:55,032 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/circular_buffer_ok.i_BEv2_AllErrorsAtOnce [2023-11-30 10:12:55,067 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-30 10:12:55,067 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2023-11-30 10:12:55,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-11-30 10:12:55,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-11-30 10:12:55,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-11-30 10:12:55,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-11-30 10:12:55,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-11-30 10:12:55,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-11-30 10:12:55,068 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-11-30 10:12:55,069 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-11-30 10:12:55,069 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 10:12:55,069 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-30 10:12:55,073 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 10:12:55,073 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 10:12:55,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 10:12:55 BasicIcfg [2023-11-30 10:12:55,083 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 10:12:55,083 INFO L158 Benchmark]: Toolchain (without parser) took 3581.87ms. Allocated memory was 394.3MB in the beginning and 539.0MB in the end (delta: 144.7MB). Free memory was 357.6MB in the beginning and 280.0MB in the end (delta: 77.7MB). Peak memory consumption was 224.4MB. Max. memory is 16.0GB. [2023-11-30 10:12:55,084 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 394.3MB. Free memory was 350.6MB in the beginning and 350.3MB in the end (delta: 223.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 10:12:55,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.22ms. Allocated memory is still 394.3MB. Free memory was 357.2MB in the beginning and 336.8MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-30 10:12:55,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.15ms. Allocated memory is still 394.3MB. Free memory was 336.8MB in the beginning and 334.1MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-30 10:12:55,084 INFO L158 Benchmark]: Boogie Preprocessor took 23.71ms. Allocated memory is still 394.3MB. Free memory was 334.1MB in the beginning and 332.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 10:12:55,084 INFO L158 Benchmark]: RCFGBuilder took 420.09ms. Allocated memory is still 394.3MB. Free memory was 332.4MB in the beginning and 312.0MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-11-30 10:12:55,084 INFO L158 Benchmark]: TraceAbstraction took 2782.53ms. Allocated memory was 394.3MB in the beginning and 539.0MB in the end (delta: 144.7MB). Free memory was 311.5MB in the beginning and 280.0MB in the end (delta: 31.5MB). Peak memory consumption was 178.3MB. Max. memory is 16.0GB. [2023-11-30 10:12:55,085 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 394.3MB. Free memory was 350.6MB in the beginning and 350.3MB in the end (delta: 223.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 304.22ms. Allocated memory is still 394.3MB. Free memory was 357.2MB in the beginning and 336.8MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.15ms. Allocated memory is still 394.3MB. Free memory was 336.8MB in the beginning and 334.1MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.71ms. Allocated memory is still 394.3MB. Free memory was 334.1MB in the beginning and 332.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 420.09ms. Allocated memory is still 394.3MB. Free memory was 332.4MB in the beginning and 312.0MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 2782.53ms. Allocated memory was 394.3MB in the beginning and 539.0MB in the end (delta: 144.7MB). Free memory was 311.5MB in the beginning and 280.0MB in the end (delta: 31.5MB). Peak memory consumption was 178.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 725]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 725]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 258 locations, 10 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: 2.6s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 374 IncrementalHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 27 mSDtfsCounter, 374 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1715occurred in iteration=6, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 540 NumberOfCodeBlocks, 540 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 532 ConstructedInterpolants, 0 QuantifiedInterpolants, 754 SizeOfPredicates, 5 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 34/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 10:12:55,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...