/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:10:29,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:10:29,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:10:29,872 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:10:29,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:10:29,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:10:29,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:10:29,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:10:29,874 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:10:29,874 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:10:29,875 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:10:29,875 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:10:29,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:10:29,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:10:29,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:10:29,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:10:29,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:10:29,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:10:29,876 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:10:29,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:10:29,877 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:10:29,877 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:10:29,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:10:29,878 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:10:29,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:10:29,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:29,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:10:29,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:10:29,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:10:29,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:10:29,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:10:29,880 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:10:29,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:10:29,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:10:30,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:10:30,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:10:30,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:10:30,050 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:10:30,050 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:10:30,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-12-05 21:10:31,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:10:31,329 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:10:31,330 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-12-05 21:10:31,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5330ebccb/7d4f53eea1854b9b8923408d648911b0/FLAG97ba07573 [2023-12-05 21:10:31,351 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5330ebccb/7d4f53eea1854b9b8923408d648911b0 [2023-12-05 21:10:31,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:10:31,354 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:10:31,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:31,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:10:31,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:10:31,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240c2846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31, skipping insertion in model container [2023-12-05 21:10:31,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,395 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:10:31,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:31,647 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:10:31,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:31,734 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:31,734 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:31,739 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:10:31,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31 WrapperNode [2023-12-05 21:10:31,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:31,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:31,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:10:31,743 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:10:31,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,779 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-12-05 21:10:31,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:31,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:10:31,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:10:31,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:10:31,787 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,793 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:10:31,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:10:31,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:10:31,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:10:31,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (1/1) ... [2023-12-05 21:10:31,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:31,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:10:31,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:10:31,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:10:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:10:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:10:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:10:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:10:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:10:31,867 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:10:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:10:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:10:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:10:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:10:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:10:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:10:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:10:31,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:10:31,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:10:31,869 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:10:31,955 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:10:31,956 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:10:32,082 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:10:32,100 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:10:32,100 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:10:32,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:32 BoogieIcfgContainer [2023-12-05 21:10:32,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:10:32,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:10:32,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:10:32,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:10:32,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:10:31" (1/3) ... [2023-12-05 21:10:32,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73253662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:32, skipping insertion in model container [2023-12-05 21:10:32,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:31" (2/3) ... [2023-12-05 21:10:32,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73253662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:32, skipping insertion in model container [2023-12-05 21:10:32,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:32" (3/3) ... [2023-12-05 21:10:32,108 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-12-05 21:10:32,120 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:10:32,120 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:10:32,121 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:10:32,165 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:10:32,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 102 transitions, 216 flow [2023-12-05 21:10:32,227 INFO L124 PetriNetUnfolderBase]: 3/99 cut-off events. [2023-12-05 21:10:32,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:32,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 99 events. 3/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-12-05 21:10:32,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 102 transitions, 216 flow [2023-12-05 21:10:32,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 53 transitions, 112 flow [2023-12-05 21:10:32,247 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:10:32,252 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;@206d9fb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:10:32,252 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:10:32,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:10:32,258 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-12-05 21:10:32,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:32,259 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:32,259 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:32,260 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:10:32,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:32,264 INFO L85 PathProgramCache]: Analyzing trace with hash 451097607, now seen corresponding path program 1 times [2023-12-05 21:10:32,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:32,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265448856] [2023-12-05 21:10:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:32,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:32,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:32,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265448856] [2023-12-05 21:10:32,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265448856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:32,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:32,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:32,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912225929] [2023-12-05 21:10:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:32,503 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:32,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:32,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:32,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:32,526 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 102 [2023-12-05 21:10:32,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:32,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 102 [2023-12-05 21:10:32,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:32,558 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2023-12-05 21:10:32,559 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:32,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 52 events. 0/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2023-12-05 21:10:32,560 INFO L140 encePairwiseOnDemand]: 100/102 looper letters, 13 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-12-05 21:10:32,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 138 flow [2023-12-05 21:10:32,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-12-05 21:10:32,570 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7941176470588235 [2023-12-05 21:10:32,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-12-05 21:10:32,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-12-05 21:10:32,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:32,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-12-05 21:10:32,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,581 INFO L308 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2023-12-05 21:10:32,582 INFO L500 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 138 flow [2023-12-05 21:10:32,582 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,582 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:32,582 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:32,582 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:10:32,583 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:10:32,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash 451097608, now seen corresponding path program 1 times [2023-12-05 21:10:32,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:32,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575683723] [2023-12-05 21:10:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:32,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:32,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:32,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575683723] [2023-12-05 21:10:32,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575683723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:32,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:32,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:32,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865674840] [2023-12-05 21:10:32,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:32,679 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:32,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:32,681 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2023-12-05 21:10:32,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:32,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2023-12-05 21:10:32,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:32,704 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2023-12-05 21:10:32,704 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-05 21:10:32,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 51 events. 0/51 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-12-05 21:10:32,705 INFO L140 encePairwiseOnDemand]: 100/102 looper letters, 11 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-12-05 21:10:32,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 158 flow [2023-12-05 21:10:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-12-05 21:10:32,710 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8169934640522876 [2023-12-05 21:10:32,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-12-05 21:10:32,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-12-05 21:10:32,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:32,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-12-05 21:10:32,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,715 INFO L308 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-12-05 21:10:32,715 INFO L500 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 158 flow [2023-12-05 21:10:32,715 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,715 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:32,716 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:32,716 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:10:32,716 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:10:32,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash 484446849, now seen corresponding path program 1 times [2023-12-05 21:10:32,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:32,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103772046] [2023-12-05 21:10:32,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:32,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103772046] [2023-12-05 21:10:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103772046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:32,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:32,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612135139] [2023-12-05 21:10:32,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:32,816 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:32,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:32,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:32,817 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2023-12-05 21:10:32,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:32,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2023-12-05 21:10:32,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:32,852 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2023-12-05 21:10:32,852 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-12-05 21:10:32,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 50 events. 0/50 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-12-05 21:10:32,853 INFO L140 encePairwiseOnDemand]: 100/102 looper letters, 11 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-12-05 21:10:32,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 50 transitions, 178 flow [2023-12-05 21:10:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-12-05 21:10:32,855 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8169934640522876 [2023-12-05 21:10:32,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-12-05 21:10:32,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-12-05 21:10:32,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:32,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-12-05 21:10:32,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,858 INFO L308 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2023-12-05 21:10:32,858 INFO L500 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 178 flow [2023-12-05 21:10:32,858 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,858 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:32,858 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:32,859 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:10:32,859 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:10:32,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:32,859 INFO L85 PathProgramCache]: Analyzing trace with hash 484446848, now seen corresponding path program 1 times [2023-12-05 21:10:32,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:32,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416413537] [2023-12-05 21:10:32,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:32,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:32,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:32,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416413537] [2023-12-05 21:10:32,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416413537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:32,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:32,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:32,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185581900] [2023-12-05 21:10:32,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:32,943 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:32,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:32,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:32,945 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 102 [2023-12-05 21:10:32,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:32,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 102 [2023-12-05 21:10:32,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:32,978 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2023-12-05 21:10:32,979 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-12-05 21:10:32,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 49 events. 0/49 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-12-05 21:10:32,979 INFO L140 encePairwiseOnDemand]: 100/102 looper letters, 11 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-12-05 21:10:32,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 49 transitions, 196 flow [2023-12-05 21:10:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:32,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:32,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-12-05 21:10:32,981 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7875816993464052 [2023-12-05 21:10:32,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-12-05 21:10:32,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-12-05 21:10:32,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:32,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-12-05 21:10:32,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,986 INFO L308 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2023-12-05 21:10:32,986 INFO L500 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 196 flow [2023-12-05 21:10:32,986 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:32,986 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:32,987 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:32,987 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:10:32,987 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:10:32,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash 91173559, now seen corresponding path program 1 times [2023-12-05 21:10:32,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:32,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189293069] [2023-12-05 21:10:32,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:32,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:33,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189293069] [2023-12-05 21:10:33,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189293069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:33,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:33,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:33,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233047881] [2023-12-05 21:10:33,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:33,091 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:33,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:33,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:33,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:33,093 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 102 [2023-12-05 21:10:33,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:33,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:33,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 102 [2023-12-05 21:10:33,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:33,118 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2023-12-05 21:10:33,119 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-12-05 21:10:33,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 48 events. 0/48 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2023-12-05 21:10:33,120 INFO L140 encePairwiseOnDemand]: 100/102 looper letters, 10 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-12-05 21:10:33,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 48 transitions, 212 flow [2023-12-05 21:10:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-12-05 21:10:33,121 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8137254901960784 [2023-12-05 21:10:33,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-12-05 21:10:33,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-12-05 21:10:33,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:33,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-12-05 21:10:33,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:33,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:33,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:33,125 INFO L308 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2023-12-05 21:10:33,126 INFO L500 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 212 flow [2023-12-05 21:10:33,126 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:33,126 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:33,126 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:33,126 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:10:33,127 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:10:33,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:33,128 INFO L85 PathProgramCache]: Analyzing trace with hash 91173558, now seen corresponding path program 1 times [2023-12-05 21:10:33,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:33,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17093713] [2023-12-05 21:10:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:33,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17093713] [2023-12-05 21:10:33,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17093713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:33,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:33,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:33,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132980358] [2023-12-05 21:10:33,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:33,183 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:33,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:33,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:33,185 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 102 [2023-12-05 21:10:33,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:33,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:33,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 102 [2023-12-05 21:10:33,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:33,212 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2023-12-05 21:10:33,212 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-12-05 21:10:33,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 47 events. 0/47 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-12-05 21:10:33,212 INFO L140 encePairwiseOnDemand]: 100/102 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2023-12-05 21:10:33,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 47 transitions, 226 flow [2023-12-05 21:10:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-12-05 21:10:33,214 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7843137254901961 [2023-12-05 21:10:33,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-12-05 21:10:33,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-12-05 21:10:33,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:33,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-12-05 21:10:33,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:33,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:33,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:33,217 INFO L308 CegarLoopForPetriNet]: 60 programPoint places, 6 predicate places. [2023-12-05 21:10:33,217 INFO L500 AbstractCegarLoop]: Abstraction has has 66 places, 47 transitions, 226 flow [2023-12-05 21:10:33,218 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:33,226 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i_BEv2_AllErrorsAtOnce [2023-12-05 21:10:33,246 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:10:33,246 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:10:33,246 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:10:33,247 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:10:33,247 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:10:33,247 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:10:33,247 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:10:33,247 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:10:33,247 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:10:33,247 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:10:33,248 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:10:33,250 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:10:33,250 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:10:33,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:10:33 BasicIcfg [2023-12-05 21:10:33,256 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:10:33,256 INFO L158 Benchmark]: Toolchain (without parser) took 1901.86ms. Allocated memory was 207.6MB in the beginning and 308.3MB in the end (delta: 100.7MB). Free memory was 141.6MB in the beginning and 126.1MB in the end (delta: 15.4MB). Peak memory consumption was 118.2MB. Max. memory is 8.0GB. [2023-12-05 21:10:33,256 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:10:33,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.04ms. Allocated memory was 207.6MB in the beginning and 308.3MB in the end (delta: 100.7MB). Free memory was 141.6MB in the beginning and 267.2MB in the end (delta: -125.6MB). Peak memory consumption was 22.7MB. Max. memory is 8.0GB. [2023-12-05 21:10:33,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.23ms. Allocated memory is still 308.3MB. Free memory was 267.1MB in the beginning and 265.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:33,257 INFO L158 Benchmark]: Boogie Preprocessor took 25.09ms. Allocated memory is still 308.3MB. Free memory was 265.0MB in the beginning and 263.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:10:33,258 INFO L158 Benchmark]: RCFGBuilder took 294.76ms. Allocated memory is still 308.3MB. Free memory was 263.5MB in the beginning and 258.3MB in the end (delta: 5.2MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2023-12-05 21:10:33,258 INFO L158 Benchmark]: TraceAbstraction took 1152.84ms. Allocated memory is still 308.3MB. Free memory was 257.2MB in the beginning and 126.1MB in the end (delta: 131.1MB). Peak memory consumption was 131.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:33,260 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 387.04ms. Allocated memory was 207.6MB in the beginning and 308.3MB in the end (delta: 100.7MB). Free memory was 141.6MB in the beginning and 267.2MB in the end (delta: -125.6MB). Peak memory consumption was 22.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.23ms. Allocated memory is still 308.3MB. Free memory was 267.1MB in the beginning and 265.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.09ms. Allocated memory is still 308.3MB. Free memory was 265.0MB in the beginning and 263.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 294.76ms. Allocated memory is still 308.3MB. Free memory was 263.5MB in the beginning and 258.3MB in the end (delta: 5.2MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1152.84ms. Allocated memory is still 308.3MB. Free memory was 257.2MB in the beginning and 126.1MB in the end (delta: 131.1MB). Peak memory consumption was 131.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 127 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=6, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 264 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:10:33,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...