/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.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/mix004.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:42:35,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:42:35,951 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 04:42:35,965 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:42:35,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:42:35,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:42:35,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:42:35,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:42:35,967 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:42:35,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:42:35,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:42:35,967 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:42:35,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:42:35,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:42:35,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:42:35,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:42:35,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:42:35,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:42:35,969 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:42:35,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:42:35,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:42:35,971 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:42:35,971 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:42:35,971 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:42:35,971 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:42:35,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:42:35,972 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:42:35,972 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:42:35,972 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:42:35,972 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:42:35,972 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:42:35,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:42:35,973 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:42:35,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:42:36,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:42:36,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:42:36,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:42:36,121 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:42:36,121 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:42:36,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix004.oepc.i [2023-11-30 04:42:37,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:42:37,213 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:42:37,214 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.oepc.i [2023-11-30 04:42:37,225 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06f95ab82/7f891e8c9aa7473fb12345a6471ea4ad/FLAG69ddd3141 [2023-11-30 04:42:37,235 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06f95ab82/7f891e8c9aa7473fb12345a6471ea4ad [2023-11-30 04:42:37,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:42:37,237 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:42:37,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:42:37,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:42:37,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:42:37,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e5cdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37, skipping insertion in model container [2023-11-30 04:42:37,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,291 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:42:37,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:42:37,607 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:42:37,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:42:37,692 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:42:37,692 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:42:37,697 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:42:37,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37 WrapperNode [2023-11-30 04:42:37,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:42:37,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:42:37,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:42:37,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:42:37,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,755 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 152 [2023-11-30 04:42:37,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:42:37,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:42:37,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:42:37,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:42:37,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,795 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:42:37,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:42:37,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:42:37,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:42:37,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (1/1) ... [2023-11-30 04:42:37,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:42:37,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:42:37,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 04:42:37,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 04:42:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:42:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:42:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:42:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:42:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:42:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-30 04:42:37,848 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-30 04:42:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-30 04:42:37,848 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-30 04:42:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-30 04:42:37,848 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-30 04:42:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-30 04:42:37,849 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-30 04:42:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:42:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:42:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:42:37,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:42:37,850 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 04:42:37,943 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:42:37,945 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:42:38,203 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:42:38,277 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:42:38,277 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 04:42:38,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:42:38 BoogieIcfgContainer [2023-11-30 04:42:38,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:42:38,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:42:38,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:42:38,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:42:38,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:42:37" (1/3) ... [2023-11-30 04:42:38,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656649d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:42:38, skipping insertion in model container [2023-11-30 04:42:38,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:42:37" (2/3) ... [2023-11-30 04:42:38,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656649d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:42:38, skipping insertion in model container [2023-11-30 04:42:38,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:42:38" (3/3) ... [2023-11-30 04:42:38,284 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.oepc.i [2023-11-30 04:42:38,296 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:42:38,296 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-30 04:42:38,297 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:42:38,346 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:42:38,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 148 transitions, 312 flow [2023-11-30 04:42:38,431 INFO L124 PetriNetUnfolderBase]: 3/144 cut-off events. [2023-11-30 04:42:38,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:42:38,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 144 events. 3/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-11-30 04:42:38,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 148 transitions, 312 flow [2023-11-30 04:42:38,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 95 transitions, 199 flow [2023-11-30 04:42:38,455 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:42:38,461 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;@1baa5600, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:42:38,461 INFO L363 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-30 04:42:38,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:42:38,475 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2023-11-30 04:42:38,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:42:38,475 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:42:38,475 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:42:38,476 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:42:38,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:42:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1217837318, now seen corresponding path program 1 times [2023-11-30 04:42:38,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:42:38,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980018067] [2023-11-30 04:42:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:42:38,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:42:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:42:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:42:38,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:42:38,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980018067] [2023-11-30 04:42:38,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980018067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:42:38,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:42:38,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:42:38,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340594127] [2023-11-30 04:42:38,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:42:38,735 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:42:38,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:42:38,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:42:38,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:42:38,756 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 148 [2023-11-30 04:42:38,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:38,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:42:38,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 148 [2023-11-30 04:42:38,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:42:38,881 INFO L124 PetriNetUnfolderBase]: 85/357 cut-off events. [2023-11-30 04:42:38,881 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 04:42:38,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 357 events. 85/357 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1670 event pairs, 85 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 484. Up to 160 conditions per place. [2023-11-30 04:42:38,887 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 21 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-11-30 04:42:38,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 94 transitions, 241 flow [2023-11-30 04:42:38,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:42:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:42:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-11-30 04:42:38,902 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.795045045045045 [2023-11-30 04:42:38,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-11-30 04:42:38,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-11-30 04:42:38,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:42:38,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-11-30 04:42:38,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:38,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:38,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:38,920 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 1 predicate places. [2023-11-30 04:42:38,920 INFO L500 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 241 flow [2023-11-30 04:42:38,921 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:38,921 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:42:38,922 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:42:38,922 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:42:38,922 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:42:38,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:42:38,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1217837319, now seen corresponding path program 1 times [2023-11-30 04:42:38,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:42:38,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51724474] [2023-11-30 04:42:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:42:38,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:42:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:42:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:42:39,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:42:39,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51724474] [2023-11-30 04:42:39,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51724474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:42:39,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:42:39,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:42:39,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338056695] [2023-11-30 04:42:39,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:42:39,072 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:42:39,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:42:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:42:39,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:42:39,115 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 148 [2023-11-30 04:42:39,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:42:39,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 148 [2023-11-30 04:42:39,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:42:39,219 INFO L124 PetriNetUnfolderBase]: 114/391 cut-off events. [2023-11-30 04:42:39,220 INFO L125 PetriNetUnfolderBase]: For 105/127 co-relation queries the response was YES. [2023-11-30 04:42:39,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 391 events. 114/391 cut-off events. For 105/127 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1844 event pairs, 114 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 733. Up to 188 conditions per place. [2023-11-30 04:42:39,224 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 19 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-11-30 04:42:39,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 93 transitions, 277 flow [2023-11-30 04:42:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:42:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:42:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-30 04:42:39,226 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8175675675675675 [2023-11-30 04:42:39,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-30 04:42:39,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-30 04:42:39,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:42:39,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-30 04:42:39,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,230 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 2 predicate places. [2023-11-30 04:42:39,231 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 277 flow [2023-11-30 04:42:39,231 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,231 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:42:39,231 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:42:39,232 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:42:39,232 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:42:39,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:42:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash 931588024, now seen corresponding path program 1 times [2023-11-30 04:42:39,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:42:39,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078620799] [2023-11-30 04:42:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:42:39,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:42:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:42:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:42:39,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:42:39,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078620799] [2023-11-30 04:42:39,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078620799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:42:39,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:42:39,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:42:39,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465867345] [2023-11-30 04:42:39,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:42:39,336 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:42:39,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:42:39,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:42:39,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:42:39,338 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 148 [2023-11-30 04:42:39,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:42:39,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 148 [2023-11-30 04:42:39,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:42:39,431 INFO L124 PetriNetUnfolderBase]: 112/374 cut-off events. [2023-11-30 04:42:39,432 INFO L125 PetriNetUnfolderBase]: For 266/306 co-relation queries the response was YES. [2023-11-30 04:42:39,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 374 events. 112/374 cut-off events. For 266/306 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1716 event pairs, 54 based on Foata normal form. 3/367 useless extension candidates. Maximal degree in co-relation 892. Up to 186 conditions per place. [2023-11-30 04:42:39,435 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 21 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-11-30 04:42:39,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 94 transitions, 329 flow [2023-11-30 04:42:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:42:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:42:39,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-11-30 04:42:39,437 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8220720720720721 [2023-11-30 04:42:39,437 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-11-30 04:42:39,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-11-30 04:42:39,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:42:39,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-11-30 04:42:39,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,441 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 3 predicate places. [2023-11-30 04:42:39,441 INFO L500 AbstractCegarLoop]: Abstraction has has 108 places, 94 transitions, 329 flow [2023-11-30 04:42:39,441 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,441 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:42:39,441 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:42:39,441 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:42:39,442 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:42:39,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:42:39,442 INFO L85 PathProgramCache]: Analyzing trace with hash 931588023, now seen corresponding path program 1 times [2023-11-30 04:42:39,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:42:39,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820054135] [2023-11-30 04:42:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:42:39,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:42:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:42:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:42:39,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:42:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820054135] [2023-11-30 04:42:39,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820054135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:42:39,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:42:39,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:42:39,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718633011] [2023-11-30 04:42:39,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:42:39,494 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:42:39,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:42:39,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:42:39,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:42:39,499 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 148 [2023-11-30 04:42:39,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 94 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:42:39,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 148 [2023-11-30 04:42:39,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:42:39,581 INFO L124 PetriNetUnfolderBase]: 110/369 cut-off events. [2023-11-30 04:42:39,582 INFO L125 PetriNetUnfolderBase]: For 471/531 co-relation queries the response was YES. [2023-11-30 04:42:39,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 369 events. 110/369 cut-off events. For 471/531 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1680 event pairs, 54 based on Foata normal form. 3/362 useless extension candidates. Maximal degree in co-relation 1053. Up to 181 conditions per place. [2023-11-30 04:42:39,584 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 21 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2023-11-30 04:42:39,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 93 transitions, 367 flow [2023-11-30 04:42:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:42:39,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:42:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-11-30 04:42:39,586 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.795045045045045 [2023-11-30 04:42:39,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-11-30 04:42:39,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-11-30 04:42:39,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:42:39,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-11-30 04:42:39,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,589 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 4 predicate places. [2023-11-30 04:42:39,589 INFO L500 AbstractCegarLoop]: Abstraction has has 109 places, 93 transitions, 367 flow [2023-11-30 04:42:39,590 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,590 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:42:39,590 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:42:39,590 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:42:39,590 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:42:39,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:42:39,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1749293826, now seen corresponding path program 1 times [2023-11-30 04:42:39,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:42:39,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276357185] [2023-11-30 04:42:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:42:39,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:42:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:42:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:42:39,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:42:39,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276357185] [2023-11-30 04:42:39,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276357185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:42:39,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:42:39,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:42:39,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882331634] [2023-11-30 04:42:39,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:42:39,741 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:42:39,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:42:39,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:42:39,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:42:39,742 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 148 [2023-11-30 04:42:39,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 93 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:42:39,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 148 [2023-11-30 04:42:39,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:42:39,877 INFO L124 PetriNetUnfolderBase]: 103/356 cut-off events. [2023-11-30 04:42:39,877 INFO L125 PetriNetUnfolderBase]: For 725/805 co-relation queries the response was YES. [2023-11-30 04:42:39,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 356 events. 103/356 cut-off events. For 725/805 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1582 event pairs, 18 based on Foata normal form. 6/355 useless extension candidates. Maximal degree in co-relation 1171. Up to 174 conditions per place. [2023-11-30 04:42:39,880 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 23 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2023-11-30 04:42:39,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 95 transitions, 439 flow [2023-11-30 04:42:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:42:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:42:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-11-30 04:42:39,905 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8220720720720721 [2023-11-30 04:42:39,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-11-30 04:42:39,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-11-30 04:42:39,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:42:39,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-11-30 04:42:39,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,908 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 5 predicate places. [2023-11-30 04:42:39,908 INFO L500 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 439 flow [2023-11-30 04:42:39,908 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,908 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:42:39,909 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:42:39,909 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:42:39,909 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:42:39,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:42:39,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1749293827, now seen corresponding path program 1 times [2023-11-30 04:42:39,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:42:39,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573597556] [2023-11-30 04:42:39,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:42:39,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:42:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:42:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:42:39,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:42:39,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573597556] [2023-11-30 04:42:39,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573597556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:42:39,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:42:39,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:42:39,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711250570] [2023-11-30 04:42:39,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:42:39,967 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:42:39,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:42:39,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:42:39,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:42:39,968 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 148 [2023-11-30 04:42:39,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:39,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:42:39,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 148 [2023-11-30 04:42:39,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:42:40,065 INFO L124 PetriNetUnfolderBase]: 96/343 cut-off events. [2023-11-30 04:42:40,066 INFO L125 PetriNetUnfolderBase]: For 1008/1108 co-relation queries the response was YES. [2023-11-30 04:42:40,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 343 events. 96/343 cut-off events. For 1008/1108 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1484 event pairs, 18 based on Foata normal form. 12/348 useless extension candidates. Maximal degree in co-relation 1263. Up to 161 conditions per place. [2023-11-30 04:42:40,068 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 23 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-11-30 04:42:40,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 94 transitions, 479 flow [2023-11-30 04:42:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:42:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:42:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-11-30 04:42:40,069 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.795045045045045 [2023-11-30 04:42:40,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-11-30 04:42:40,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-11-30 04:42:40,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:42:40,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-11-30 04:42:40,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,074 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 6 predicate places. [2023-11-30 04:42:40,074 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 479 flow [2023-11-30 04:42:40,075 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,075 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:42:40,075 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:42:40,075 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:42:40,075 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:42:40,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:42:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash 688362365, now seen corresponding path program 1 times [2023-11-30 04:42:40,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:42:40,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206234847] [2023-11-30 04:42:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:42:40,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:42:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:42:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:42:40,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:42:40,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206234847] [2023-11-30 04:42:40,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206234847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:42:40,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:42:40,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:42:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093514353] [2023-11-30 04:42:40,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:42:40,180 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:42:40,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:42:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:42:40,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:42:40,181 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 148 [2023-11-30 04:42:40,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 479 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:42:40,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 148 [2023-11-30 04:42:40,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:42:40,240 INFO L124 PetriNetUnfolderBase]: 76/323 cut-off events. [2023-11-30 04:42:40,240 INFO L125 PetriNetUnfolderBase]: For 1128/1242 co-relation queries the response was YES. [2023-11-30 04:42:40,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 323 events. 76/323 cut-off events. For 1128/1242 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1394 event pairs, 9 based on Foata normal form. 12/334 useless extension candidates. Maximal degree in co-relation 1225. Up to 141 conditions per place. [2023-11-30 04:42:40,242 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 27 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-11-30 04:42:40,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 97 transitions, 583 flow [2023-11-30 04:42:40,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:42:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:42:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-11-30 04:42:40,253 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7972972972972973 [2023-11-30 04:42:40,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-11-30 04:42:40,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-11-30 04:42:40,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:42:40,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-11-30 04:42:40,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,255 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 7 predicate places. [2023-11-30 04:42:40,255 INFO L500 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 583 flow [2023-11-30 04:42:40,256 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,256 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:42:40,256 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:42:40,256 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 04:42:40,256 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-30 04:42:40,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:42:40,256 INFO L85 PathProgramCache]: Analyzing trace with hash 688362366, now seen corresponding path program 1 times [2023-11-30 04:42:40,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:42:40,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61282433] [2023-11-30 04:42:40,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:42:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:42:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:42:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:42:40,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:42:40,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61282433] [2023-11-30 04:42:40,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61282433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:42:40,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:42:40,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:42:40,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582040406] [2023-11-30 04:42:40,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:42:40,330 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:42:40,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:42:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:42:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:42:40,331 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 148 [2023-11-30 04:42:40,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 583 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:42:40,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 148 [2023-11-30 04:42:40,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:42:40,384 INFO L124 PetriNetUnfolderBase]: 56/279 cut-off events. [2023-11-30 04:42:40,384 INFO L125 PetriNetUnfolderBase]: For 1358/1498 co-relation queries the response was YES. [2023-11-30 04:42:40,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 279 events. 56/279 cut-off events. For 1358/1498 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1119 event pairs, 0 based on Foata normal form. 24/302 useless extension candidates. Maximal degree in co-relation 1099. Up to 109 conditions per place. [2023-11-30 04:42:40,385 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2023-11-30 04:42:40,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 96 transitions, 625 flow [2023-11-30 04:42:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:42:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:42:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2023-11-30 04:42:40,387 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2023-11-30 04:42:40,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2023-11-30 04:42:40,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2023-11-30 04:42:40,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:42:40,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2023-11-30 04:42:40,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,397 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 8 predicate places. [2023-11-30 04:42:40,397 INFO L500 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 625 flow [2023-11-30 04:42:40,400 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:42:40,408 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix004.oepc.i_BEv2_AllErrorsAtOnce [2023-11-30 04:42:40,429 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-30 04:42:40,430 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-30 04:42:40,430 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-30 04:42:40,430 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-30 04:42:40,430 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-30 04:42:40,430 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-30 04:42:40,430 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-30 04:42:40,430 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-30 04:42:40,430 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-11-30 04:42:40,430 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-11-30 04:42:40,431 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-30 04:42:40,431 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-30 04:42:40,431 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 04:42:40,431 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:42:40,438 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:42:40,438 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:42:40,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:42:40 BasicIcfg [2023-11-30 04:42:40,442 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:42:40,442 INFO L158 Benchmark]: Toolchain (without parser) took 3205.05ms. Allocated memory was 339.7MB in the beginning and 463.5MB in the end (delta: 123.7MB). Free memory was 271.8MB in the beginning and 293.8MB in the end (delta: -22.0MB). Peak memory consumption was 102.7MB. Max. memory is 16.0GB. [2023-11-30 04:42:40,443 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 339.7MB. Free memory is still 287.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:42:40,443 INFO L158 Benchmark]: CACSL2BoogieTranslator took 460.53ms. Allocated memory is still 339.7MB. Free memory was 271.8MB in the beginning and 247.6MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-11-30 04:42:40,443 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.40ms. Allocated memory is still 339.7MB. Free memory was 247.6MB in the beginning and 244.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-30 04:42:40,443 INFO L158 Benchmark]: Boogie Preprocessor took 32.42ms. Allocated memory is still 339.7MB. Free memory was 244.5MB in the beginning and 242.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:42:40,444 INFO L158 Benchmark]: RCFGBuilder took 481.23ms. Allocated memory is still 339.7MB. Free memory was 242.4MB in the beginning and 199.5MB in the end (delta: 42.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.0GB. [2023-11-30 04:42:40,444 INFO L158 Benchmark]: TraceAbstraction took 2162.27ms. Allocated memory was 339.7MB in the beginning and 463.5MB in the end (delta: 123.7MB). Free memory was 198.4MB in the beginning and 293.8MB in the end (delta: -95.4MB). Peak memory consumption was 29.3MB. Max. memory is 16.0GB. [2023-11-30 04:42:40,445 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 339.7MB. Free memory is still 287.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 460.53ms. Allocated memory is still 339.7MB. Free memory was 271.8MB in the beginning and 247.6MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 64.40ms. Allocated memory is still 339.7MB. Free memory was 247.6MB in the beginning and 244.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.42ms. Allocated memory is still 339.7MB. Free memory was 244.5MB in the beginning and 242.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 481.23ms. Allocated memory is still 339.7MB. Free memory was 242.4MB in the beginning and 199.5MB in the end (delta: 42.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.0GB. * TraceAbstraction took 2162.27ms. Allocated memory was 339.7MB in the beginning and 463.5MB in the end (delta: 123.7MB). Free memory was 198.4MB in the beginning and 293.8MB in the end (delta: -95.4MB). Peak memory consumption was 29.3MB. Max. memory is 16.0GB. * 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 - 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 9 procedures, 184 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 196 IncrementalHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 60 mSDtfsCounter, 196 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=625occurred in iteration=8, InterpolantAutomatonStates: 24, 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, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 436 ConstructedInterpolants, 0 QuantifiedInterpolants, 580 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 04:42:40,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...