/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:10:23,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:10:23,759 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 [2023-12-05 21:10:23,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:10:23,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:10:23,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:10:23,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:10:23,787 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:10:23,787 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:10:23,790 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:10:23,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:10:23,790 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:10:23,791 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:10:23,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:10:23,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:10:23,792 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:10:23,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:10:23,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:10:23,792 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:10:23,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:10:23,792 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:10:23,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:10:23,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:10:23,793 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:10:23,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:10:23,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:23,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:10:23,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:10:23,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:10:23,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:10:23,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:10:23,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:10:23,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:10:23,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:10:24,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:10:24,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:10:24,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:10:24,040 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:10:24,041 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:10:24,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_power.opt.i [2023-12-05 21:10:25,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:10:25,317 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:10:25,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_power.opt.i [2023-12-05 21:10:25,335 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f0c47ce/5868213d9db3466ea967fde723cf00ab/FLAG9be67e160 [2023-12-05 21:10:25,348 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f0c47ce/5868213d9db3466ea967fde723cf00ab [2023-12-05 21:10:25,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:10:25,351 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:10:25,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:25,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:10:25,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:10:25,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183aada9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25, skipping insertion in model container [2023-12-05 21:10:25,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,406 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:10:25,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:25,758 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:10:25,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:25,847 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:25,848 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:25,853 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:10:25,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25 WrapperNode [2023-12-05 21:10:25,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:25,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:25,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:10:25,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:10:25,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,919 INFO L138 Inliner]: procedures = 177, calls = 89, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 200 [2023-12-05 21:10:25,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:25,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:10:25,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:10:25,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:10:25,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,941 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:10:25,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:10:25,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:10:25,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:10:25,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (1/1) ... [2023-12-05 21:10:25,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:25,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:10:26,040 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) [2023-12-05 21:10:26,095 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 [2023-12-05 21:10:26,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:10:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:10:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:10:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:10:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:10:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:10:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:10:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:10:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:10:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:10:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:10:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:10:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-12-05 21:10:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-12-05 21:10:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:10:26,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:10:26,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:10:26,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:10:26,114 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:10:26,217 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:10:26,219 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:10:26,604 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:10:27,052 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:10:27,053 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:10:27,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:27 BoogieIcfgContainer [2023-12-05 21:10:27,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:10:27,055 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:10:27,055 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:10:27,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:10:27,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:10:25" (1/3) ... [2023-12-05 21:10:27,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfd7588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:27, skipping insertion in model container [2023-12-05 21:10:27,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:25" (2/3) ... [2023-12-05 21:10:27,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfd7588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:27, skipping insertion in model container [2023-12-05 21:10:27,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:27" (3/3) ... [2023-12-05 21:10:27,059 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_power.opt.i [2023-12-05 21:10:27,072 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:10:27,072 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2023-12-05 21:10:27,072 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:10:27,184 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:10:27,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 207 transitions, 430 flow [2023-12-05 21:10:27,303 INFO L124 PetriNetUnfolderBase]: 3/203 cut-off events. [2023-12-05 21:10:27,304 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:27,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 3/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 331 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 144. Up to 2 conditions per place. [2023-12-05 21:10:27,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 207 transitions, 430 flow [2023-12-05 21:10:27,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 203 transitions, 418 flow [2023-12-05 21:10:27,327 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:10:27,333 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;@689b0dcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:10:27,333 INFO L363 AbstractCegarLoop]: Starting to check reachability of 98 error locations. [2023-12-05 21:10:27,351 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:10:27,351 INFO L124 PetriNetUnfolderBase]: 0/62 cut-off events. [2023-12-05 21:10:27,351 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:27,352 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:27,352 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] [2023-12-05 21:10:27,352 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:10:27,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:27,356 INFO L85 PathProgramCache]: Analyzing trace with hash -601515883, now seen corresponding path program 1 times [2023-12-05 21:10:27,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:27,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778452438] [2023-12-05 21:10:27,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:27,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:27,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778452438] [2023-12-05 21:10:27,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778452438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:27,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:27,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78072453] [2023-12-05 21:10:27,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:27,646 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:27,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:27,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:27,668 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 207 [2023-12-05 21:10:27,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 203 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2023-12-05 21:10:27,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:27,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 207 [2023-12-05 21:10:27,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:46,438 INFO L124 PetriNetUnfolderBase]: 76707/131537 cut-off events. [2023-12-05 21:10:46,440 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2023-12-05 21:10:46,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232644 conditions, 131537 events. 76707/131537 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 8030. Compared 1354364 event pairs, 46503 based on Foata normal form. 3276/65920 useless extension candidates. Maximal degree in co-relation 232563. Up to 61250 conditions per place. [2023-12-05 21:10:47,759 INFO L140 encePairwiseOnDemand]: 177/207 looper letters, 77 selfloop transitions, 2 changer transitions 0/194 dead transitions. [2023-12-05 21:10:47,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 194 transitions, 558 flow [2023-12-05 21:10:47,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:47,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-12-05 21:10:47,769 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7954911433172303 [2023-12-05 21:10:47,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-12-05 21:10:47,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-12-05 21:10:47,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:47,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-12-05 21:10:47,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2023-12-05 21:10:47,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-12-05 21:10:47,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-12-05 21:10:47,783 INFO L308 CegarLoopForPetriNet]: 213 programPoint places, -26 predicate places. [2023-12-05 21:10:47,783 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 194 transitions, 558 flow [2023-12-05 21:10:47,784 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2023-12-05 21:10:47,784 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:47,784 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] [2023-12-05 21:10:47,784 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:10:47,784 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:10:47,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash -601515882, now seen corresponding path program 1 times [2023-12-05 21:10:47,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:47,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140346134] [2023-12-05 21:10:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:47,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:47,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:47,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140346134] [2023-12-05 21:10:47,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140346134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:47,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:47,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:47,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771455203] [2023-12-05 21:10:47,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:47,927 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:47,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:47,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:47,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:47,929 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 207 [2023-12-05 21:10:47,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 194 transitions, 558 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2023-12-05 21:10:47,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:47,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 207 [2023-12-05 21:10:47,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:11:06,365 INFO L124 PetriNetUnfolderBase]: 77384/132592 cut-off events. [2023-12-05 21:11:06,365 INFO L125 PetriNetUnfolderBase]: For 9667/17579 co-relation queries the response was YES. [2023-12-05 21:11:06,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331046 conditions, 132592 events. 77384/132592 cut-off events. For 9667/17579 co-relation queries the response was YES. Maximal size of possible extension queue 8030. Compared 1363961 event pairs, 47180 based on Foata normal form. 0/63338 useless extension candidates. Maximal degree in co-relation 330959. Up to 68472 conditions per place. [2023-12-05 21:11:07,758 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 94 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2023-12-05 21:11:07,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 215 transitions, 834 flow [2023-12-05 21:11:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:11:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:11:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-12-05 21:11:07,761 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7246376811594203 [2023-12-05 21:11:07,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-12-05 21:11:07,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-12-05 21:11:07,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:11:07,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-12-05 21:11:07,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-12-05 21:11:07,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-12-05 21:11:07,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-12-05 21:11:07,765 INFO L308 CegarLoopForPetriNet]: 213 programPoint places, -25 predicate places. [2023-12-05 21:11:07,765 INFO L500 AbstractCegarLoop]: Abstraction has has 188 places, 215 transitions, 834 flow [2023-12-05 21:11:07,765 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2023-12-05 21:11:07,765 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:11:07,766 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] [2023-12-05 21:11:07,766 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:11:07,766 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:11:07,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:11:07,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1445958258, now seen corresponding path program 1 times [2023-12-05 21:11:07,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:11:07,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668171042] [2023-12-05 21:11:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:11:07,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:11:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:11:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:11:07,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:11:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668171042] [2023-12-05 21:11:07,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668171042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:11:07,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:11:07,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:11:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891579107] [2023-12-05 21:11:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:11:07,924 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:11:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:11:07,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:11:07,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:11:07,925 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 207 [2023-12-05 21:11:07,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 215 transitions, 834 flow. Second operand has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 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) [2023-12-05 21:11:07,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:11:07,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 207 [2023-12-05 21:11:07,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:11:21,520 INFO L124 PetriNetUnfolderBase]: 49468/93817 cut-off events. [2023-12-05 21:11:21,522 INFO L125 PetriNetUnfolderBase]: For 17888/22148 co-relation queries the response was YES. [2023-12-05 21:11:21,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289935 conditions, 93817 events. 49468/93817 cut-off events. For 17888/22148 co-relation queries the response was YES. Maximal size of possible extension queue 6167. Compared 1067440 event pairs, 9428 based on Foata normal form. 0/57248 useless extension candidates. Maximal degree in co-relation 289837. Up to 56436 conditions per place. [2023-12-05 21:11:22,586 INFO L140 encePairwiseOnDemand]: 185/207 looper letters, 107 selfloop transitions, 18 changer transitions 0/238 dead transitions. [2023-12-05 21:11:22,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 238 transitions, 1216 flow [2023-12-05 21:11:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-05 21:11:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-05 21:11:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 984 transitions. [2023-12-05 21:11:22,589 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6790890269151139 [2023-12-05 21:11:22,589 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 984 transitions. [2023-12-05 21:11:22,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 984 transitions. [2023-12-05 21:11:22,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:11:22,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 984 transitions. [2023-12-05 21:11:22,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.57142857142858) internal successors, (984), 7 states have internal predecessors, (984), 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) [2023-12-05 21:11:22,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 207.0) internal successors, (1656), 8 states have internal predecessors, (1656), 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) [2023-12-05 21:11:22,594 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 207.0) internal successors, (1656), 8 states have internal predecessors, (1656), 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) [2023-12-05 21:11:22,595 INFO L308 CegarLoopForPetriNet]: 213 programPoint places, -21 predicate places. [2023-12-05 21:11:22,595 INFO L500 AbstractCegarLoop]: Abstraction has has 192 places, 238 transitions, 1216 flow [2023-12-05 21:11:22,596 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 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) [2023-12-05 21:11:22,596 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:11:22,597 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] [2023-12-05 21:11:22,597 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:11:22,597 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:11:22,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:11:22,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1445958257, now seen corresponding path program 1 times [2023-12-05 21:11:22,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:11:22,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448002895] [2023-12-05 21:11:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:11:22,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:11:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:11:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:11:22,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:11:22,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448002895] [2023-12-05 21:11:22,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448002895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:11:22,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:11:22,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-05 21:11:22,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361169551] [2023-12-05 21:11:22,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:11:22,783 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-05 21:11:22,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:11:22,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-05 21:11:22,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-05 21:11:22,784 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 207 [2023-12-05 21:11:22,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 238 transitions, 1216 flow. Second operand has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 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) [2023-12-05 21:11:22,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:11:22,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 207 [2023-12-05 21:11:22,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:11:25,076 INFO L124 PetriNetUnfolderBase]: 6002/13268 cut-off events. [2023-12-05 21:11:25,076 INFO L125 PetriNetUnfolderBase]: For 3447/4767 co-relation queries the response was YES. [2023-12-05 21:11:25,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47758 conditions, 13268 events. 6002/13268 cut-off events. For 3447/4767 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 128624 event pairs, 2762 based on Foata normal form. 0/10516 useless extension candidates. Maximal degree in co-relation 47649. Up to 8054 conditions per place. [2023-12-05 21:11:25,155 INFO L140 encePairwiseOnDemand]: 184/207 looper letters, 83 selfloop transitions, 7 changer transitions 0/200 dead transitions. [2023-12-05 21:11:25,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 200 transitions, 1092 flow [2023-12-05 21:11:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:11:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:11:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 799 transitions. [2023-12-05 21:11:25,158 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.643317230273752 [2023-12-05 21:11:25,158 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 799 transitions. [2023-12-05 21:11:25,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 799 transitions. [2023-12-05 21:11:25,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:11:25,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 799 transitions. [2023-12-05 21:11:25,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.16666666666666) internal successors, (799), 6 states have internal predecessors, (799), 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) [2023-12-05 21:11:25,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 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) [2023-12-05 21:11:25,162 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 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) [2023-12-05 21:11:25,162 INFO L308 CegarLoopForPetriNet]: 213 programPoint places, -26 predicate places. [2023-12-05 21:11:25,163 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 200 transitions, 1092 flow [2023-12-05 21:11:25,163 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 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) [2023-12-05 21:11:25,163 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:11:25,163 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] [2023-12-05 21:11:25,163 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:11:25,163 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:11:25,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:11:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash 943950355, now seen corresponding path program 1 times [2023-12-05 21:11:25,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:11:25,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345574425] [2023-12-05 21:11:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:11:25,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:11:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:11:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:11:25,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:11:25,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345574425] [2023-12-05 21:11:25,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345574425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:11:25,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:11:25,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:11:25,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455357173] [2023-12-05 21:11:25,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:11:25,199 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:11:25,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:11:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:11:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:11:25,201 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 207 [2023-12-05 21:11:25,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 200 transitions, 1092 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2023-12-05 21:11:25,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:11:25,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 207 [2023-12-05 21:11:25,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:11:27,755 INFO L124 PetriNetUnfolderBase]: 7421/15936 cut-off events. [2023-12-05 21:11:27,756 INFO L125 PetriNetUnfolderBase]: For 12161/18719 co-relation queries the response was YES. [2023-12-05 21:11:27,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66999 conditions, 15936 events. 7421/15936 cut-off events. For 12161/18719 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 158332 event pairs, 3496 based on Foata normal form. 2/12375 useless extension candidates. Maximal degree in co-relation 66881. Up to 10032 conditions per place. [2023-12-05 21:11:27,881 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 83 selfloop transitions, 2 changer transitions 0/200 dead transitions. [2023-12-05 21:11:27,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 200 transitions, 1264 flow [2023-12-05 21:11:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:11:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:11:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-12-05 21:11:27,883 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-12-05 21:11:27,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-12-05 21:11:27,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-12-05 21:11:27,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:11:27,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-12-05 21:11:27,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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) [2023-12-05 21:11:27,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-12-05 21:11:27,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-12-05 21:11:27,886 INFO L308 CegarLoopForPetriNet]: 213 programPoint places, -25 predicate places. [2023-12-05 21:11:27,886 INFO L500 AbstractCegarLoop]: Abstraction has has 188 places, 200 transitions, 1264 flow [2023-12-05 21:11:27,886 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2023-12-05 21:11:27,886 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:11:27,887 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] [2023-12-05 21:11:27,887 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:11:27,887 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:11:27,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:11:27,887 INFO L85 PathProgramCache]: Analyzing trace with hash 943950356, now seen corresponding path program 1 times [2023-12-05 21:11:27,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:11:27,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026820929] [2023-12-05 21:11:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:11:27,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:11:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:11:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:11:28,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:11:28,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026820929] [2023-12-05 21:11:28,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026820929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:11:28,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:11:28,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:11:28,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885701804] [2023-12-05 21:11:28,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:11:28,032 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:11:28,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:11:28,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:11:28,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:11:28,034 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 207 [2023-12-05 21:11:28,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 200 transitions, 1264 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-12-05 21:11:28,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:11:28,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 207 [2023-12-05 21:11:28,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:11:30,660 INFO L124 PetriNetUnfolderBase]: 7420/16558 cut-off events. [2023-12-05 21:11:30,660 INFO L125 PetriNetUnfolderBase]: For 28772/31022 co-relation queries the response was YES. [2023-12-05 21:11:30,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77225 conditions, 16558 events. 7420/16558 cut-off events. For 28772/31022 co-relation queries the response was YES. Maximal size of possible extension queue 1273. Compared 171254 event pairs, 736 based on Foata normal form. 2/13261 useless extension candidates. Maximal degree in co-relation 77099. Up to 10032 conditions per place. [2023-12-05 21:11:30,792 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 96 selfloop transitions, 2 changer transitions 0/219 dead transitions. [2023-12-05 21:11:30,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 219 transitions, 1692 flow [2023-12-05 21:11:30,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:11:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:11:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-12-05 21:11:30,793 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6908212560386473 [2023-12-05 21:11:30,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-12-05 21:11:30,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-12-05 21:11:30,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:11:30,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-12-05 21:11:30,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-12-05 21:11:30,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-12-05 21:11:30,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-12-05 21:11:30,797 INFO L308 CegarLoopForPetriNet]: 213 programPoint places, -24 predicate places. [2023-12-05 21:11:30,797 INFO L500 AbstractCegarLoop]: Abstraction has has 189 places, 219 transitions, 1692 flow [2023-12-05 21:11:30,797 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-12-05 21:11:30,797 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:11:30,797 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] [2023-12-05 21:11:30,797 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:11:30,797 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:11:30,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:11:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1262838211, now seen corresponding path program 1 times [2023-12-05 21:11:30,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:11:30,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965536133] [2023-12-05 21:11:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:11:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:11:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:11:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:11:30,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:11:30,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965536133] [2023-12-05 21:11:30,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965536133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:11:30,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:11:30,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:11:30,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330495031] [2023-12-05 21:11:30,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:11:30,854 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:11:30,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:11:30,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:11:30,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:11:30,855 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 207 [2023-12-05 21:11:30,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 219 transitions, 1692 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2023-12-05 21:11:30,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:11:30,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 207 [2023-12-05 21:11:30,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:11:34,113 INFO L124 PetriNetUnfolderBase]: 8833/18213 cut-off events. [2023-12-05 21:11:34,114 INFO L125 PetriNetUnfolderBase]: For 60648/63462 co-relation queries the response was YES. [2023-12-05 21:11:34,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98922 conditions, 18213 events. 8833/18213 cut-off events. For 60648/63462 co-relation queries the response was YES. Maximal size of possible extension queue 1413. Compared 182534 event pairs, 540 based on Foata normal form. 6/14302 useless extension candidates. Maximal degree in co-relation 98788. Up to 11452 conditions per place. [2023-12-05 21:11:34,336 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 119 selfloop transitions, 2 changer transitions 0/241 dead transitions. [2023-12-05 21:11:34,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 241 transitions, 2248 flow [2023-12-05 21:11:34,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:11:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:11:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-12-05 21:11:34,337 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6908212560386473 [2023-12-05 21:11:34,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-12-05 21:11:34,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-12-05 21:11:34,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:11:34,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-12-05 21:11:34,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-12-05 21:11:34,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-12-05 21:11:34,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 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) [2023-12-05 21:11:34,340 INFO L308 CegarLoopForPetriNet]: 213 programPoint places, -23 predicate places. [2023-12-05 21:11:34,340 INFO L500 AbstractCegarLoop]: Abstraction has has 190 places, 241 transitions, 2248 flow [2023-12-05 21:11:34,340 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2023-12-05 21:11:34,340 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:11:34,340 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] [2023-12-05 21:11:34,340 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-05 21:11:34,341 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 95 more)] === [2023-12-05 21:11:34,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:11:34,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1262838212, now seen corresponding path program 1 times [2023-12-05 21:11:34,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:11:34,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294768113] [2023-12-05 21:11:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:11:34,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:11:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:11:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:11:34,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:11:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294768113] [2023-12-05 21:11:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294768113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:11:34,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:11:34,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:11:34,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279914902] [2023-12-05 21:11:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:11:34,375 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:11:34,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:11:34,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:11:34,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:11:34,376 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 207 [2023-12-05 21:11:34,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 241 transitions, 2248 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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) [2023-12-05 21:11:34,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:11:34,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 207 [2023-12-05 21:11:34,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand