/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/mix003.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:06:19,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:06:20,048 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 21:06:20,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:06:20,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:06:20,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:06:20,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:06:20,071 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:06:20,071 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:06:20,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:06:20,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:06:20,074 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:06:20,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:06:20,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:06:20,076 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:06:20,076 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:06:20,076 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:06:20,076 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:06:20,076 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:06:20,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:06:20,076 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:06:20,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:06:20,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:06:20,077 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:06:20,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:06:20,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:06:20,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:06:20,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:06:20,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:06:20,078 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:06:20,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:06:20,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:06:20,079 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:06:20,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:06:20,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:06:20,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:06:20,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:06:20,249 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:06:20,249 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:06:20,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix003.oepc.i [2023-12-05 21:06:21,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:06:21,446 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:06:21,446 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix003.oepc.i [2023-12-05 21:06:21,457 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ad08e1a/6374464f18cb4164b36d97fff6342541/FLAG0326d16a9 [2023-12-05 21:06:21,467 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ad08e1a/6374464f18cb4164b36d97fff6342541 [2023-12-05 21:06:21,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:06:21,470 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:06:21,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:06:21,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:06:21,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:06:21,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9eded98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21, skipping insertion in model container [2023-12-05 21:06:21,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,513 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:06:21,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:06:21,829 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:06:21,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:06:21,909 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:06:21,910 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:06:21,915 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:06:21,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21 WrapperNode [2023-12-05 21:06:21,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:06:21,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:06:21,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:06:21,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:06:21,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,961 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2023-12-05 21:06:21,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:06:21,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:06:21,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:06:21,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:06:21,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:21,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:22,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:06:22,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:06:22,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:06:22,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:06:22,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (1/1) ... [2023-12-05 21:06:22,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:06:22,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:06:22,029 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 21:06:22,031 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 21:06:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:06:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:06:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:06:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:06:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:06:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:06:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:06:22,049 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:06:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:06:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:06:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:06:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:06:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:06:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:06:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:06:22,051 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 21:06:22,155 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:06:22,157 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:06:22,400 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:06:22,537 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:06:22,538 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:06:22,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:06:22 BoogieIcfgContainer [2023-12-05 21:06:22,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:06:22,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:06:22,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:06:22,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:06:22,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:06:21" (1/3) ... [2023-12-05 21:06:22,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1630830f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:06:22, skipping insertion in model container [2023-12-05 21:06:22,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:06:21" (2/3) ... [2023-12-05 21:06:22,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1630830f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:06:22, skipping insertion in model container [2023-12-05 21:06:22,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:06:22" (3/3) ... [2023-12-05 21:06:22,548 INFO L112 eAbstractionObserver]: Analyzing ICFG mix003.oepc.i [2023-12-05 21:06:22,561 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:06:22,561 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:06:22,562 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:06:22,613 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:06:22,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 125 transitions, 262 flow [2023-12-05 21:06:22,690 INFO L124 PetriNetUnfolderBase]: 3/122 cut-off events. [2023-12-05 21:06:22,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:06:22,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 122 events. 3/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-12-05 21:06:22,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 125 transitions, 262 flow [2023-12-05 21:06:22,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 75 transitions, 156 flow [2023-12-05 21:06:22,712 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:06:22,719 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7cce53f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:06:22,719 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:06:22,733 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:06:22,733 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2023-12-05 21:06:22,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:06:22,734 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:22,734 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] [2023-12-05 21:06:22,735 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:22,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:22,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1697805239, now seen corresponding path program 1 times [2023-12-05 21:06:22,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:22,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957959235] [2023-12-05 21:06:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:22,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:22,999 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 21:06:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957959235] [2023-12-05 21:06:23,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957959235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:23,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:23,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:23,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439975347] [2023-12-05 21:06:23,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:23,010 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:23,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:23,040 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 125 [2023-12-05 21:06:23,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 21:06:23,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:23,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 125 [2023-12-05 21:06:23,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:23,123 INFO L124 PetriNetUnfolderBase]: 24/163 cut-off events. [2023-12-05 21:06:23,124 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:06:23,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 163 events. 24/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 510 event pairs, 24 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 179. Up to 57 conditions per place. [2023-12-05 21:06:23,127 INFO L140 encePairwiseOnDemand]: 123/125 looper letters, 16 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-12-05 21:06:23,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 74 transitions, 188 flow [2023-12-05 21:06:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-12-05 21:06:23,138 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.792 [2023-12-05 21:06:23,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-12-05 21:06:23,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-12-05 21:06:23,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:23,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-12-05 21:06:23,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 21:06:23,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:23,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:23,150 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 1 predicate places. [2023-12-05 21:06:23,151 INFO L500 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 188 flow [2023-12-05 21:06:23,151 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 21:06:23,151 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:23,151 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] [2023-12-05 21:06:23,151 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:06:23,151 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:23,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1697805238, now seen corresponding path program 1 times [2023-12-05 21:06:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:23,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498655959] [2023-12-05 21:06:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:23,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:23,319 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 21:06:23,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:23,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498655959] [2023-12-05 21:06:23,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498655959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:23,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:23,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:23,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457718733] [2023-12-05 21:06:23,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:23,321 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:23,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:23,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:23,323 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 125 [2023-12-05 21:06:23,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 21:06:23,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:23,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 125 [2023-12-05 21:06:23,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:23,396 INFO L124 PetriNetUnfolderBase]: 33/177 cut-off events. [2023-12-05 21:06:23,396 INFO L125 PetriNetUnfolderBase]: For 41/51 co-relation queries the response was YES. [2023-12-05 21:06:23,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 177 events. 33/177 cut-off events. For 41/51 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 617 event pairs, 33 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 265. Up to 65 conditions per place. [2023-12-05 21:06:23,398 INFO L140 encePairwiseOnDemand]: 123/125 looper letters, 14 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-12-05 21:06:23,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 214 flow [2023-12-05 21:06:23,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-12-05 21:06:23,401 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8106666666666666 [2023-12-05 21:06:23,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-12-05 21:06:23,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-12-05 21:06:23,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:23,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-12-05 21:06:23,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 21:06:23,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:23,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:23,404 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2023-12-05 21:06:23,405 INFO L500 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 214 flow [2023-12-05 21:06:23,405 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 21:06:23,405 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:23,405 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] [2023-12-05 21:06:23,405 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:06:23,405 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:23,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1256178467, now seen corresponding path program 1 times [2023-12-05 21:06:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:23,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921274089] [2023-12-05 21:06:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:23,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:23,479 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 21:06:23,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:23,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921274089] [2023-12-05 21:06:23,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921274089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:23,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:23,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:23,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409731552] [2023-12-05 21:06:23,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:23,481 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:23,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:23,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:23,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:23,482 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 125 [2023-12-05 21:06:23,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 21:06:23,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:23,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 125 [2023-12-05 21:06:23,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:23,545 INFO L124 PetriNetUnfolderBase]: 31/160 cut-off events. [2023-12-05 21:06:23,546 INFO L125 PetriNetUnfolderBase]: For 102/118 co-relation queries the response was YES. [2023-12-05 21:06:23,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 160 events. 31/160 cut-off events. For 102/118 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 486 event pairs, 9 based on Foata normal form. 3/159 useless extension candidates. Maximal degree in co-relation 301. Up to 63 conditions per place. [2023-12-05 21:06:23,554 INFO L140 encePairwiseOnDemand]: 123/125 looper letters, 17 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-12-05 21:06:23,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 258 flow [2023-12-05 21:06:23,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:23,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-12-05 21:06:23,557 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7946666666666666 [2023-12-05 21:06:23,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-12-05 21:06:23,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-12-05 21:06:23,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:23,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-12-05 21:06:23,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 21:06:23,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:23,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:23,562 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 3 predicate places. [2023-12-05 21:06:23,563 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 258 flow [2023-12-05 21:06:23,563 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 21:06:23,563 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:23,563 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] [2023-12-05 21:06:23,564 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:06:23,564 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:23,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:23,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1256178468, now seen corresponding path program 1 times [2023-12-05 21:06:23,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:23,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810908265] [2023-12-05 21:06:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:23,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:23,699 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 21:06:23,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:23,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810908265] [2023-12-05 21:06:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810908265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:23,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:23,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:23,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187680543] [2023-12-05 21:06:23,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:23,701 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:23,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:23,706 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 125 [2023-12-05 21:06:23,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 21:06:23,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:23,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 125 [2023-12-05 21:06:23,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:23,760 INFO L124 PetriNetUnfolderBase]: 29/155 cut-off events. [2023-12-05 21:06:23,760 INFO L125 PetriNetUnfolderBase]: For 183/207 co-relation queries the response was YES. [2023-12-05 21:06:23,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 155 events. 29/155 cut-off events. For 183/207 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 456 event pairs, 9 based on Foata normal form. 3/154 useless extension candidates. Maximal degree in co-relation 339. Up to 58 conditions per place. [2023-12-05 21:06:23,763 INFO L140 encePairwiseOnDemand]: 123/125 looper letters, 15 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-12-05 21:06:23,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 73 transitions, 284 flow [2023-12-05 21:06:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-12-05 21:06:23,764 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8133333333333334 [2023-12-05 21:06:23,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-12-05 21:06:23,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-12-05 21:06:23,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:23,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-12-05 21:06:23,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 21:06:23,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:23,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:23,768 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 4 predicate places. [2023-12-05 21:06:23,769 INFO L500 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 284 flow [2023-12-05 21:06:23,769 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 21:06:23,769 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:23,769 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] [2023-12-05 21:06:23,769 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:06:23,770 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:23,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:23,770 INFO L85 PathProgramCache]: Analyzing trace with hash 480458909, now seen corresponding path program 1 times [2023-12-05 21:06:23,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:23,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172091222] [2023-12-05 21:06:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:23,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:23,849 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 21:06:23,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:23,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172091222] [2023-12-05 21:06:23,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172091222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:23,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:23,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:23,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187509385] [2023-12-05 21:06:23,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:23,850 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:23,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:23,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:23,852 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 125 [2023-12-05 21:06:23,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 21:06:23,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:23,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 125 [2023-12-05 21:06:23,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:23,894 INFO L124 PetriNetUnfolderBase]: 22/142 cut-off events. [2023-12-05 21:06:23,895 INFO L125 PetriNetUnfolderBase]: For 257/289 co-relation queries the response was YES. [2023-12-05 21:06:23,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 142 events. 22/142 cut-off events. For 257/289 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 366 event pairs, 0 based on Foata normal form. 6/147 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2023-12-05 21:06:23,896 INFO L140 encePairwiseOnDemand]: 123/125 looper letters, 19 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-12-05 21:06:23,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 348 flow [2023-12-05 21:06:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-12-05 21:06:23,898 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7946666666666666 [2023-12-05 21:06:23,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-12-05 21:06:23,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-12-05 21:06:23,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:23,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-12-05 21:06:23,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 21:06:23,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:23,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:23,902 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2023-12-05 21:06:23,903 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 348 flow [2023-12-05 21:06:23,904 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 21:06:23,904 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:06:23,904 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] [2023-12-05 21:06:23,904 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:06:23,904 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:06:23,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:06:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash 480458910, now seen corresponding path program 1 times [2023-12-05 21:06:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:06:23,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996490773] [2023-12-05 21:06:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:06:23,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:06:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:06:24,009 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 21:06:24,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:06:24,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996490773] [2023-12-05 21:06:24,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996490773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:06:24,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:06:24,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:06:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445527385] [2023-12-05 21:06:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:06:24,014 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:06:24,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:06:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:06:24,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:06:24,016 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 125 [2023-12-05 21:06:24,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 21:06:24,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:06:24,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 125 [2023-12-05 21:06:24,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:06:24,052 INFO L124 PetriNetUnfolderBase]: 15/132 cut-off events. [2023-12-05 21:06:24,053 INFO L125 PetriNetUnfolderBase]: For 318/358 co-relation queries the response was YES. [2023-12-05 21:06:24,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 132 events. 15/132 cut-off events. For 318/358 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 289 event pairs, 0 based on Foata normal form. 12/143 useless extension candidates. Maximal degree in co-relation 306. Up to 38 conditions per place. [2023-12-05 21:06:24,053 INFO L140 encePairwiseOnDemand]: 123/125 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2023-12-05 21:06:24,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 74 transitions, 376 flow [2023-12-05 21:06:24,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:06:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:06:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-12-05 21:06:24,055 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8133333333333334 [2023-12-05 21:06:24,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-12-05 21:06:24,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-12-05 21:06:24,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:06:24,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-12-05 21:06:24,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 21:06:24,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:24,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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 21:06:24,059 INFO L308 CegarLoopForPetriNet]: 82 programPoint places, 6 predicate places. [2023-12-05 21:06:24,059 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 376 flow [2023-12-05 21:06:24,060 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 21:06:24,068 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix003.oepc.i_BEv2_AllErrorsAtOnce [2023-12-05 21:06:24,081 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:06:24,082 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:06:24,082 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:06:24,082 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:06:24,082 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:06:24,082 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:06:24,082 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:06:24,082 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:06:24,082 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:06:24,082 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:06:24,083 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:06:24,085 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:06:24,085 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:06:24,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:06:24 BasicIcfg [2023-12-05 21:06:24,091 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:06:24,096 INFO L158 Benchmark]: Toolchain (without parser) took 2621.61ms. Allocated memory is still 255.9MB. Free memory was 212.0MB in the beginning and 131.2MB in the end (delta: 80.8MB). Peak memory consumption was 81.7MB. Max. memory is 8.0GB. [2023-12-05 21:06:24,096 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 204.5MB. Free memory is still 158.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:06:24,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.05ms. Allocated memory is still 255.9MB. Free memory was 211.6MB in the beginning and 187.9MB in the end (delta: 23.7MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-05 21:06:24,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.29ms. Allocated memory is still 255.9MB. Free memory was 187.9MB in the beginning and 185.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:06:24,098 INFO L158 Benchmark]: Boogie Preprocessor took 42.73ms. Allocated memory is still 255.9MB. Free memory was 185.4MB in the beginning and 183.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:06:24,099 INFO L158 Benchmark]: RCFGBuilder took 534.84ms. Allocated memory is still 255.9MB. Free memory was 183.7MB in the beginning and 224.1MB in the end (delta: -40.5MB). Peak memory consumption was 41.0MB. Max. memory is 8.0GB. [2023-12-05 21:06:24,099 INFO L158 Benchmark]: TraceAbstraction took 1548.71ms. Allocated memory is still 255.9MB. Free memory was 223.3MB in the beginning and 131.2MB in the end (delta: 92.0MB). Peak memory consumption was 92.0MB. Max. memory is 8.0GB. [2023-12-05 21:06:24,100 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 204.5MB. Free memory is still 158.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 443.05ms. Allocated memory is still 255.9MB. Free memory was 211.6MB in the beginning and 187.9MB in the end (delta: 23.7MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.29ms. Allocated memory is still 255.9MB. Free memory was 187.9MB in the beginning and 185.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.73ms. Allocated memory is still 255.9MB. Free memory was 185.4MB in the beginning and 183.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 534.84ms. Allocated memory is still 255.9MB. Free memory was 183.7MB in the beginning and 224.1MB in the end (delta: -40.5MB). Peak memory consumption was 41.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1548.71ms. Allocated memory is still 255.9MB. Free memory was 223.3MB in the beginning and 131.2MB in the end (delta: 92.0MB). Peak memory consumption was 92.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 152 locations, 9 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: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 109 IncrementalHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=376occurred in iteration=6, InterpolantAutomatonStates: 18, 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, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 282 ConstructedInterpolants, 0 QuantifiedInterpolants, 390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:06:24,113 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...