/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/safe033_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:10:48,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:10:48,277 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 21:10:48,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:10:48,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:10:48,297 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:10:48,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:10:48,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:10:48,298 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:10:48,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:10:48,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:10:48,301 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:10:48,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:10:48,303 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:10:48,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:10:48,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:10:48,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:10:48,303 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:10:48,303 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:10:48,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:10:48,304 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:10:48,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:10:48,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:10:48,305 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:10:48,305 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:10:48,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:48,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:10:48,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:10:48,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:10:48,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:10:48,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:10:48,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:10:48,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:10:48,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:10:48,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:10:48,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:10:48,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:10:48,507 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:10:48,507 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:10:48,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-12-05 21:10:49,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:10:49,694 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:10:49,694 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-12-05 21:10:49,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048de5dd7/7f346f25fcdb41fc9ac1be252e0a780b/FLAGaa850e21a [2023-12-05 21:10:49,727 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048de5dd7/7f346f25fcdb41fc9ac1be252e0a780b [2023-12-05 21:10:49,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:10:49,729 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:10:49,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:49,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:10:49,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:10:49,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:49" (1/1) ... [2023-12-05 21:10:49,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f54e0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:49, skipping insertion in model container [2023-12-05 21:10:49,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:49" (1/1) ... [2023-12-05 21:10:49,786 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:10:50,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:50,051 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:10:50,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:50,094 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:50,094 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:50,099 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:10:50,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50 WrapperNode [2023-12-05 21:10:50,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:50,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:50,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:10:50,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:10:50,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,126 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2023-12-05 21:10:50,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:50,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:10:50,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:10:50,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:10:50,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,134 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,134 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:10:50,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:10:50,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:10:50,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:10:50,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (1/1) ... [2023-12-05 21:10:50,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:50,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:10:50,177 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 21:10:50,210 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 21:10:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:10:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:10:50,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:10:50,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:10:50,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:10:50,227 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:10:50,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:10:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:10:50,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:10:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:10:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:10:50,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:10:50,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:10:50,229 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 21:10:50,354 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:10:50,356 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:10:50,546 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:10:50,553 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:10:50,553 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:10:50,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:50 BoogieIcfgContainer [2023-12-05 21:10:50,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:10:50,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:10:50,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:10:50,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:10:50,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:10:49" (1/3) ... [2023-12-05 21:10:50,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbb3874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:50, skipping insertion in model container [2023-12-05 21:10:50,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:50" (2/3) ... [2023-12-05 21:10:50,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbb3874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:50, skipping insertion in model container [2023-12-05 21:10:50,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:50" (3/3) ... [2023-12-05 21:10:50,559 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2023-12-05 21:10:50,571 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:10:50,571 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-05 21:10:50,572 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:10:50,601 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:10:50,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 82 transitions, 172 flow [2023-12-05 21:10:50,655 INFO L124 PetriNetUnfolderBase]: 3/80 cut-off events. [2023-12-05 21:10:50,656 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:50,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 3/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2023-12-05 21:10:50,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 82 transitions, 172 flow [2023-12-05 21:10:50,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 36 transitions, 75 flow [2023-12-05 21:10:50,668 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:10:50,672 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;@5fe4da23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:10:50,673 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-05 21:10:50,677 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:10:50,677 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-12-05 21:10:50,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:50,677 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:50,678 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:50,678 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-05 21:10:50,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1037476307, now seen corresponding path program 1 times [2023-12-05 21:10:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:50,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632511098] [2023-12-05 21:10:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:50,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:50,842 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 21:10:50,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:50,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632511098] [2023-12-05 21:10:50,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632511098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:50,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:50,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:50,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666999701] [2023-12-05 21:10:50,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:50,850 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:50,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:50,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:50,871 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 82 [2023-12-05 21:10:50,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 21:10:50,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:50,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 82 [2023-12-05 21:10:50,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:50,912 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2023-12-05 21:10:50,913 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:50,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 35 events. 0/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-12-05 21:10:50,914 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 9 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-12-05 21:10:50,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 93 flow [2023-12-05 21:10:50,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2023-12-05 21:10:50,931 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7886178861788617 [2023-12-05 21:10:50,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2023-12-05 21:10:50,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2023-12-05 21:10:50,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:50,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2023-12-05 21:10:50,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 21:10:50,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:10:50,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:10:50,959 INFO L308 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-12-05 21:10:50,959 INFO L500 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 93 flow [2023-12-05 21:10:50,959 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 21:10:50,959 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:50,959 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:50,960 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:10:50,960 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-05 21:10:50,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1037476306, now seen corresponding path program 1 times [2023-12-05 21:10:50,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:50,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794407817] [2023-12-05 21:10:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:51,050 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 21:10:51,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:51,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794407817] [2023-12-05 21:10:51,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794407817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:51,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:51,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:51,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99907744] [2023-12-05 21:10:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:51,052 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:51,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:51,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:51,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:51,054 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2023-12-05 21:10:51,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 21:10:51,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:51,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2023-12-05 21:10:51,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:51,068 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2023-12-05 21:10:51,069 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-12-05 21:10:51,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 34 events. 0/34 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-12-05 21:10:51,069 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 7 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-12-05 21:10:51,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 105 flow [2023-12-05 21:10:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:51,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:51,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2023-12-05 21:10:51,071 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8048780487804879 [2023-12-05 21:10:51,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2023-12-05 21:10:51,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2023-12-05 21:10:51,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:51,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2023-12-05 21:10:51,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 21:10:51,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:10:51,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:10:51,074 INFO L308 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-12-05 21:10:51,074 INFO L500 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 105 flow [2023-12-05 21:10:51,074 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 21:10:51,074 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:51,074 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] [2023-12-05 21:10:51,074 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:10:51,074 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-05 21:10:51,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:51,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1917563444, now seen corresponding path program 1 times [2023-12-05 21:10:51,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:51,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19462691] [2023-12-05 21:10:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:51,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:51,154 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 21:10:51,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:51,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19462691] [2023-12-05 21:10:51,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19462691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:51,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:51,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:51,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703987126] [2023-12-05 21:10:51,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:51,156 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:51,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:51,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:51,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:51,157 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 82 [2023-12-05 21:10:51,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 21:10:51,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:51,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 82 [2023-12-05 21:10:51,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:51,181 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-12-05 21:10:51,181 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-12-05 21:10:51,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 33 events. 0/33 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-12-05 21:10:51,181 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 8 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-12-05 21:10:51,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 119 flow [2023-12-05 21:10:51,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-12-05 21:10:51,183 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7845528455284553 [2023-12-05 21:10:51,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-12-05 21:10:51,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-12-05 21:10:51,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:51,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-12-05 21:10:51,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 21:10:51,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:10:51,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:10:51,185 INFO L308 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-12-05 21:10:51,185 INFO L500 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 119 flow [2023-12-05 21:10:51,185 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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 21:10:51,185 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:51,185 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] [2023-12-05 21:10:51,186 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:10:51,186 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-05 21:10:51,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:51,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1917563443, now seen corresponding path program 1 times [2023-12-05 21:10:51,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:51,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236759645] [2023-12-05 21:10:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:51,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:51,269 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 21:10:51,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:51,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236759645] [2023-12-05 21:10:51,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236759645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:51,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:51,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:51,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83648151] [2023-12-05 21:10:51,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:51,271 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:51,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:51,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:51,272 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2023-12-05 21:10:51,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 21:10:51,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:51,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2023-12-05 21:10:51,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:51,284 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-12-05 21:10:51,284 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-12-05 21:10:51,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 32 events. 0/32 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-12-05 21:10:51,285 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2023-12-05 21:10:51,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 127 flow [2023-12-05 21:10:51,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:51,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2023-12-05 21:10:51,286 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8008130081300813 [2023-12-05 21:10:51,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2023-12-05 21:10:51,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2023-12-05 21:10:51,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:51,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2023-12-05 21:10:51,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 21:10:51,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:10:51,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 21:10:51,288 INFO L308 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-12-05 21:10:51,288 INFO L500 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 127 flow [2023-12-05 21:10:51,288 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 21:10:51,293 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe033_tso.i_BEv2_AllErrorsAtOnce [2023-12-05 21:10:51,306 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-12-05 21:10:51,312 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-12-05 21:10:51,313 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-12-05 21:10:51,313 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-12-05 21:10:51,313 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-12-05 21:10:51,313 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-12-05 21:10:51,313 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:10:51,314 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-05 21:10:51,316 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:10:51,316 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:10:51,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:10:51 BasicIcfg [2023-12-05 21:10:51,321 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:10:51,322 INFO L158 Benchmark]: Toolchain (without parser) took 1592.44ms. Allocated memory is still 211.8MB. Free memory was 160.4MB in the beginning and 92.7MB in the end (delta: 67.6MB). Peak memory consumption was 68.2MB. Max. memory is 8.0GB. [2023-12-05 21:10:51,322 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 176.2MB. Free memory was 127.6MB in the beginning and 127.4MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:10:51,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.78ms. Allocated memory is still 211.8MB. Free memory was 160.1MB in the beginning and 140.2MB in the end (delta: 20.0MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-05 21:10:51,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.55ms. Allocated memory is still 211.8MB. Free memory was 139.9MB in the beginning and 138.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:51,323 INFO L158 Benchmark]: Boogie Preprocessor took 15.39ms. Allocated memory is still 211.8MB. Free memory was 138.1MB in the beginning and 136.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:10:51,323 INFO L158 Benchmark]: RCFGBuilder took 411.05ms. Allocated memory is still 211.8MB. Free memory was 136.5MB in the beginning and 174.5MB in the end (delta: -38.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-05 21:10:51,324 INFO L158 Benchmark]: TraceAbstraction took 765.92ms. Allocated memory is still 211.8MB. Free memory was 174.0MB in the beginning and 92.7MB in the end (delta: 81.3MB). Peak memory consumption was 81.8MB. Max. memory is 8.0GB. [2023-12-05 21:10:51,325 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 176.2MB. Free memory was 127.6MB in the beginning and 127.4MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 367.78ms. Allocated memory is still 211.8MB. Free memory was 160.1MB in the beginning and 140.2MB in the end (delta: 20.0MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.55ms. Allocated memory is still 211.8MB. Free memory was 139.9MB in the beginning and 138.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.39ms. Allocated memory is still 211.8MB. Free memory was 138.1MB in the beginning and 136.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 411.05ms. Allocated memory is still 211.8MB. Free memory was 136.5MB in the beginning and 174.5MB in the end (delta: -38.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 765.92ms. Allocated memory is still 211.8MB. Free memory was 174.0MB in the beginning and 92.7MB in the end (delta: 81.3MB). Peak memory consumption was 81.8MB. 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 99 locations, 6 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: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 22 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=4, InterpolantAutomatonStates: 12, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:10:51,344 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...