/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/safe031_power.opt_pso.opt_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:10:43,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:10:43,796 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 21:10:43,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:10:43,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:10:43,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:10:43,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:10:43,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:10:43,827 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:10:43,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:10:43,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:10:43,831 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:10:43,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:10:43,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:10:43,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:10:43,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:10:43,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:10:43,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:10:43,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:10:43,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:10:43,833 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:10:43,833 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:10:43,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:10:43,834 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:10:43,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:10:43,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:43,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:10:43,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:10:43,834 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:10:43,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:10:43,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:10:43,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:10:43,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:10:43,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:10:44,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:10:44,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:10:44,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:10:44,047 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:10:44,049 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:10:44,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_power.opt_pso.opt_rmo.opt.i [2023-12-05 21:10:44,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:10:45,186 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:10:45,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_power.opt_pso.opt_rmo.opt.i [2023-12-05 21:10:45,197 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a591b865/e0da2a9ec94c4a1e9c58081ab127f5ca/FLAG0cc287841 [2023-12-05 21:10:45,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a591b865/e0da2a9ec94c4a1e9c58081ab127f5ca [2023-12-05 21:10:45,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:10:45,214 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:10:45,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:45,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:10:45,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:10:45,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57bce698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45, skipping insertion in model container [2023-12-05 21:10:45,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,257 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:10:45,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:45,558 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:10:45,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:45,639 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:45,640 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:45,645 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:10:45,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45 WrapperNode [2023-12-05 21:10:45,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:45,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:45,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:10:45,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:10:45,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,706 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 149 [2023-12-05 21:10:45,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:45,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:10:45,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:10:45,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:10:45,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,739 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:10:45,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:10:45,745 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:10:45,745 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:10:45,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (1/1) ... [2023-12-05 21:10:45,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:45,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:10:45,794 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 21:10:45,853 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 21:10:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:10:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:10:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:10:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:10:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:10:45,863 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:10:45,864 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:10:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:10:45,864 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:10:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:10:45,864 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:10:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:10:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:10:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:10:45,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:10:45,866 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 21:10:46,009 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:10:46,018 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:10:46,293 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:10:46,363 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:10:46,364 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:10:46,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:46 BoogieIcfgContainer [2023-12-05 21:10:46,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:10:46,366 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:10:46,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:10:46,371 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:10:46,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:10:45" (1/3) ... [2023-12-05 21:10:46,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6694fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:46, skipping insertion in model container [2023-12-05 21:10:46,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:45" (2/3) ... [2023-12-05 21:10:46,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6694fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:46, skipping insertion in model container [2023-12-05 21:10:46,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:46" (3/3) ... [2023-12-05 21:10:46,374 INFO L112 eAbstractionObserver]: Analyzing ICFG safe031_power.opt_pso.opt_rmo.opt.i [2023-12-05 21:10:46,386 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:10:46,387 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:10:46,387 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:10:46,445 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:10:46,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 120 transitions, 252 flow [2023-12-05 21:10:46,505 INFO L124 PetriNetUnfolderBase]: 3/117 cut-off events. [2023-12-05 21:10:46,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:46,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 117 events. 3/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-12-05 21:10:46,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 120 transitions, 252 flow [2023-12-05 21:10:46,515 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 71 transitions, 148 flow [2023-12-05 21:10:46,521 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:10:46,525 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;@20eb379, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:10:46,525 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:10:46,531 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:10:46,531 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-12-05 21:10:46,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:46,531 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:46,532 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:46,532 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 21:10:46,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1280585461, now seen corresponding path program 1 times [2023-12-05 21:10:46,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:46,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181821958] [2023-12-05 21:10:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:46,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:46,765 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 21:10:46,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:46,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181821958] [2023-12-05 21:10:46,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181821958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:46,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:46,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588711269] [2023-12-05 21:10:46,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:46,773 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:46,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:46,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:46,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:46,795 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2023-12-05 21:10:46,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 21:10:46,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:46,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2023-12-05 21:10:46,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:46,837 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2023-12-05 21:10:46,838 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:46,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 2 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 51. Up to 15 conditions per place. [2023-12-05 21:10:46,840 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 14 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-12-05 21:10:46,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 176 flow [2023-12-05 21:10:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-12-05 21:10:46,855 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7861111111111111 [2023-12-05 21:10:46,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-12-05 21:10:46,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-12-05 21:10:46,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:46,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-12-05 21:10:46,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 21:10:46,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 21:10:46,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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 21:10:46,873 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2023-12-05 21:10:46,873 INFO L500 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 176 flow [2023-12-05 21:10:46,873 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 21:10:46,873 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:46,874 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:46,874 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:10:46,874 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 21:10:46,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:46,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1280585460, now seen corresponding path program 1 times [2023-12-05 21:10:46,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:46,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034142308] [2023-12-05 21:10:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:46,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:46,981 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 21:10:46,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:46,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034142308] [2023-12-05 21:10:46,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034142308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:46,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:46,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:46,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27130174] [2023-12-05 21:10:46,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:46,984 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:46,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:46,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:46,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:46,987 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2023-12-05 21:10:46,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 21:10:46,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:46,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2023-12-05 21:10:46,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:47,024 INFO L124 PetriNetUnfolderBase]: 3/77 cut-off events. [2023-12-05 21:10:47,024 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-12-05 21:10:47,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 77 events. 3/77 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 3 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 65. Up to 15 conditions per place. [2023-12-05 21:10:47,027 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 12 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-12-05 21:10:47,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 198 flow [2023-12-05 21:10:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-12-05 21:10:47,029 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2023-12-05 21:10:47,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-12-05 21:10:47,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-12-05 21:10:47,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:47,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-12-05 21:10:47,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,034 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-12-05 21:10:47,034 INFO L500 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 198 flow [2023-12-05 21:10:47,034 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,034 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:47,035 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:47,035 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:10:47,035 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:10:47,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1834111884, now seen corresponding path program 1 times [2023-12-05 21:10:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:47,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220603910] [2023-12-05 21:10:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:47,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:47,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:47,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220603910] [2023-12-05 21:10:47,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220603910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:47,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:47,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:47,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487200697] [2023-12-05 21:10:47,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:47,115 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:47,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:47,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:47,116 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2023-12-05 21:10:47,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:47,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2023-12-05 21:10:47,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:47,153 INFO L124 PetriNetUnfolderBase]: 3/76 cut-off events. [2023-12-05 21:10:47,153 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-12-05 21:10:47,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 76 events. 3/76 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 3 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 75. Up to 15 conditions per place. [2023-12-05 21:10:47,154 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 13 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-12-05 21:10:47,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 68 transitions, 222 flow [2023-12-05 21:10:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-12-05 21:10:47,155 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2023-12-05 21:10:47,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-12-05 21:10:47,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-12-05 21:10:47,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:47,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-12-05 21:10:47,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,158 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2023-12-05 21:10:47,158 INFO L500 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 222 flow [2023-12-05 21:10:47,158 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,158 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:47,158 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:47,158 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:10:47,158 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:10:47,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:47,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1834111883, now seen corresponding path program 1 times [2023-12-05 21:10:47,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:47,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042893417] [2023-12-05 21:10:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:47,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:47,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:47,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042893417] [2023-12-05 21:10:47,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042893417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:47,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:47,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:47,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742351154] [2023-12-05 21:10:47,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:47,261 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:47,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:47,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:47,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:47,266 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2023-12-05 21:10:47,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:47,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2023-12-05 21:10:47,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:47,306 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2023-12-05 21:10:47,307 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-12-05 21:10:47,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 75 events. 3/75 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 3 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 83. Up to 14 conditions per place. [2023-12-05 21:10:47,307 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 11 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-12-05 21:10:47,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 67 transitions, 240 flow [2023-12-05 21:10:47,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-12-05 21:10:47,309 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8027777777777778 [2023-12-05 21:10:47,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-12-05 21:10:47,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-12-05 21:10:47,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:47,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-12-05 21:10:47,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,334 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 4 predicate places. [2023-12-05 21:10:47,334 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 240 flow [2023-12-05 21:10:47,335 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,335 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:47,335 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:47,335 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:10:47,335 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:10:47,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:47,336 INFO L85 PathProgramCache]: Analyzing trace with hash 886965230, now seen corresponding path program 1 times [2023-12-05 21:10:47,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:47,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451407786] [2023-12-05 21:10:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:47,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:47,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:47,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451407786] [2023-12-05 21:10:47,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451407786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:47,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:47,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:47,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468697535] [2023-12-05 21:10:47,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:47,410 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:47,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:47,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:47,411 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 120 [2023-12-05 21:10:47,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:47,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 120 [2023-12-05 21:10:47,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:47,453 INFO L124 PetriNetUnfolderBase]: 2/72 cut-off events. [2023-12-05 21:10:47,453 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-12-05 21:10:47,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 72 events. 2/72 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 82. Up to 13 conditions per place. [2023-12-05 21:10:47,454 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 13 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-12-05 21:10:47,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 67 transitions, 272 flow [2023-12-05 21:10:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-12-05 21:10:47,456 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2023-12-05 21:10:47,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-12-05 21:10:47,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-12-05 21:10:47,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:47,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-12-05 21:10:47,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,460 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2023-12-05 21:10:47,460 INFO L500 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 272 flow [2023-12-05 21:10:47,460 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,460 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:47,461 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:47,461 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:10:47,461 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:10:47,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:47,463 INFO L85 PathProgramCache]: Analyzing trace with hash 886965231, now seen corresponding path program 1 times [2023-12-05 21:10:47,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:47,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055006406] [2023-12-05 21:10:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:47,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:47,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055006406] [2023-12-05 21:10:47,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055006406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:47,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:47,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:47,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327528833] [2023-12-05 21:10:47,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:47,556 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:47,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:47,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:47,558 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2023-12-05 21:10:47,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:47,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2023-12-05 21:10:47,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:47,578 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-12-05 21:10:47,578 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-12-05 21:10:47,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 69 events. 1/69 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 75. Up to 12 conditions per place. [2023-12-05 21:10:47,579 INFO L140 encePairwiseOnDemand]: 118/120 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2023-12-05 21:10:47,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 288 flow [2023-12-05 21:10:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-12-05 21:10:47,580 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8027777777777778 [2023-12-05 21:10:47,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-12-05 21:10:47,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-12-05 21:10:47,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:47,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-12-05 21:10:47,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,583 INFO L308 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2023-12-05 21:10:47,583 INFO L500 AbstractCegarLoop]: Abstraction has has 84 places, 66 transitions, 288 flow [2023-12-05 21:10:47,584 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:47,591 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe031_power.opt_pso.opt_rmo.opt.i_BEv2_AllErrorsAtOnce [2023-12-05 21:10:47,614 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:10:47,614 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:10:47,615 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:10:47,615 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:10:47,615 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:10:47,616 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:10:47,616 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:10:47,616 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:10:47,616 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:10:47,616 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:10:47,616 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:10:47,619 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:10:47,619 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:10:47,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:10:47 BasicIcfg [2023-12-05 21:10:47,623 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:10:47,626 INFO L158 Benchmark]: Toolchain (without parser) took 2409.25ms. Allocated memory was 192.9MB in the beginning and 244.3MB in the end (delta: 51.4MB). Free memory was 146.2MB in the beginning and 160.1MB in the end (delta: -13.8MB). Peak memory consumption was 39.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:47,626 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 192.9MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:10:47,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.01ms. Allocated memory is still 192.9MB. Free memory was 146.2MB in the beginning and 123.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:47,627 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.12ms. Allocated memory is still 192.9MB. Free memory was 123.1MB in the beginning and 120.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:47,627 INFO L158 Benchmark]: Boogie Preprocessor took 37.26ms. Allocated memory is still 192.9MB. Free memory was 120.5MB in the beginning and 118.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:47,627 INFO L158 Benchmark]: RCFGBuilder took 620.66ms. Allocated memory is still 192.9MB. Free memory was 118.4MB in the beginning and 83.3MB in the end (delta: 35.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-05 21:10:47,627 INFO L158 Benchmark]: TraceAbstraction took 1256.69ms. Allocated memory was 192.9MB in the beginning and 244.3MB in the end (delta: 51.4MB). Free memory was 82.3MB in the beginning and 160.1MB in the end (delta: -77.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:10:47,628 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 192.9MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 430.01ms. Allocated memory is still 192.9MB. Free memory was 146.2MB in the beginning and 123.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.12ms. Allocated memory is still 192.9MB. Free memory was 123.1MB in the beginning and 120.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.26ms. Allocated memory is still 192.9MB. Free memory was 120.5MB in the beginning and 118.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 620.66ms. Allocated memory is still 192.9MB. Free memory was 118.4MB in the beginning and 83.3MB in the end (delta: 35.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1256.69ms. Allocated memory was 192.9MB in the beginning and 244.3MB in the end (delta: 51.4MB). Free memory was 82.3MB in the beginning and 160.1MB in the end (delta: -77.8MB). There was no memory consumed. 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, 146 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: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 82 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=288occurred 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, 0.5s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 366 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 21:10:47,643 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...