/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/rfi002_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:08:17,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:08:18,051 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 21:08:18,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:08:18,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:08:18,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:08:18,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:08:18,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:08:18,083 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:08:18,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:08:18,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:08:18,087 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:08:18,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:08:18,089 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:08:18,089 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:08:18,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:08:18,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:08:18,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:08:18,089 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:08:18,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:08:18,090 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:08:18,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:08:18,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:08:18,091 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:08:18,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:08:18,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:08:18,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:08:18,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:08:18,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:08:18,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:08:18,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:08:18,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:08:18,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:08:18,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:08:18,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:08:18,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:08:18,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:08:18,319 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:08:18,322 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:08:18,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-12-05 21:08:19,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:08:19,622 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:08:19,622 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-12-05 21:08:19,634 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6b89c54/4923a00584644aa58e1c7ce5453f496f/FLAGd3d514d9d [2023-12-05 21:08:19,645 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6b89c54/4923a00584644aa58e1c7ce5453f496f [2023-12-05 21:08:19,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:08:19,649 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:08:19,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:08:19,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:08:19,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:08:19,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:08:19" (1/1) ... [2023-12-05 21:08:19,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6086d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:19, skipping insertion in model container [2023-12-05 21:08:19,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:08:19" (1/1) ... [2023-12-05 21:08:19,713 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:08:20,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:08:20,044 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:08:20,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:08:20,156 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:08:20,156 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:08:20,162 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:08:20,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20 WrapperNode [2023-12-05 21:08:20,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:08:20,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:08:20,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:08:20,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:08:20,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,228 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 217 [2023-12-05 21:08:20,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:08:20,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:08:20,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:08:20,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:08:20,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:08:20,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:08:20,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:08:20,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:08:20,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (1/1) ... [2023-12-05 21:08:20,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:08:20,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:08:20,316 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 21:08:20,329 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 21:08:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:08:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:08:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:08:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:08:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:08:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:08:20,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:08:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:08:20,344 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:08:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:08:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:08:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:08:20,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:08:20,345 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 21:08:20,450 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:08:20,452 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:08:20,885 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:08:21,023 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:08:21,023 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:08:21,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:08:21 BoogieIcfgContainer [2023-12-05 21:08:21,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:08:21,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:08:21,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:08:21,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:08:21,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:08:19" (1/3) ... [2023-12-05 21:08:21,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2ea1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:08:21, skipping insertion in model container [2023-12-05 21:08:21,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:08:20" (2/3) ... [2023-12-05 21:08:21,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2ea1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:08:21, skipping insertion in model container [2023-12-05 21:08:21,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:08:21" (3/3) ... [2023-12-05 21:08:21,032 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-12-05 21:08:21,044 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:08:21,044 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-05 21:08:21,045 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:08:21,083 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:08:21,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 116 transitions, 240 flow [2023-12-05 21:08:21,145 INFO L124 PetriNetUnfolderBase]: 3/114 cut-off events. [2023-12-05 21:08:21,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:08:21,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 114 events. 3/114 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. 0/107 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-12-05 21:08:21,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 116 transitions, 240 flow [2023-12-05 21:08:21,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 68 transitions, 139 flow [2023-12-05 21:08:21,169 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:08:21,173 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;@71876c59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:08:21,173 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-05 21:08:21,181 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:08:21,181 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2023-12-05 21:08:21,181 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:08:21,181 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:21,182 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] [2023-12-05 21:08:21,182 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 21:08:21,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1803110528, now seen corresponding path program 1 times [2023-12-05 21:08:21,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:21,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987317046] [2023-12-05 21:08:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:21,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:21,448 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 21:08:21,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:21,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987317046] [2023-12-05 21:08:21,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987317046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:21,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:21,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:21,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908763587] [2023-12-05 21:08:21,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:21,459 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:21,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:21,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:21,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:21,481 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 116 [2023-12-05 21:08:21,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 21:08:21,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:21,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 116 [2023-12-05 21:08:21,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:21,544 INFO L124 PetriNetUnfolderBase]: 6/85 cut-off events. [2023-12-05 21:08:21,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:08:21,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 85 events. 6/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 6 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 21 conditions per place. [2023-12-05 21:08:21,546 INFO L140 encePairwiseOnDemand]: 114/116 looper letters, 12 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-12-05 21:08:21,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 163 flow [2023-12-05 21:08:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-12-05 21:08:21,578 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7729885057471264 [2023-12-05 21:08:21,578 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-12-05 21:08:21,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-12-05 21:08:21,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:21,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-12-05 21:08:21,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 21:08:21,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 21:08:21,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 21:08:21,591 INFO L308 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2023-12-05 21:08:21,591 INFO L500 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 163 flow [2023-12-05 21:08:21,591 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 21:08:21,591 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:21,591 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] [2023-12-05 21:08:21,592 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:08:21,592 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 21:08:21,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:21,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1803110529, now seen corresponding path program 1 times [2023-12-05 21:08:21,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:21,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300715203] [2023-12-05 21:08:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:21,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:21,723 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 21:08:21,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:21,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300715203] [2023-12-05 21:08:21,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300715203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:21,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:21,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:21,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698499189] [2023-12-05 21:08:21,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:21,725 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:21,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:21,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:21,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:21,726 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 116 [2023-12-05 21:08:21,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 21:08:21,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:21,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 116 [2023-12-05 21:08:21,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:21,781 INFO L124 PetriNetUnfolderBase]: 9/93 cut-off events. [2023-12-05 21:08:21,781 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-12-05 21:08:21,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 93 events. 9/93 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 115 event pairs, 9 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 82. Up to 23 conditions per place. [2023-12-05 21:08:21,783 INFO L140 encePairwiseOnDemand]: 114/116 looper letters, 10 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-12-05 21:08:21,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 181 flow [2023-12-05 21:08:21,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-12-05 21:08:21,787 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7844827586206896 [2023-12-05 21:08:21,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-12-05 21:08:21,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-12-05 21:08:21,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:21,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-12-05 21:08:21,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:08:21,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 21:08:21,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 21:08:21,793 INFO L308 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-12-05 21:08:21,793 INFO L500 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 181 flow [2023-12-05 21:08:21,793 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 21:08:21,793 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:21,794 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:08:21,794 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:08:21,794 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-05 21:08:21,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash 790175197, now seen corresponding path program 1 times [2023-12-05 21:08:21,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:21,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453091933] [2023-12-05 21:08:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:21,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:21,882 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 21:08:21,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:21,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453091933] [2023-12-05 21:08:21,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453091933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:21,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:21,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:21,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439019711] [2023-12-05 21:08:21,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:21,883 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:21,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:21,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:21,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:21,884 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 116 [2023-12-05 21:08:21,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 21:08:21,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:21,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 116 [2023-12-05 21:08:21,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:21,930 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2023-12-05 21:08:21,931 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-12-05 21:08:21,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 83 events. 6/83 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 4/87 useless extension candidates. Maximal degree in co-relation 79. Up to 20 conditions per place. [2023-12-05 21:08:21,931 INFO L140 encePairwiseOnDemand]: 114/116 looper letters, 13 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-12-05 21:08:21,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 223 flow [2023-12-05 21:08:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:21,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:21,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-12-05 21:08:21,933 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7931034482758621 [2023-12-05 21:08:21,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-12-05 21:08:21,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-12-05 21:08:21,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:21,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-12-05 21:08:21,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:08:21,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 21:08:21,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 21:08:21,935 INFO L308 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-12-05 21:08:21,935 INFO L500 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 223 flow [2023-12-05 21:08:21,936 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 21:08:21,936 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:08:21,936 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:08:21,936 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:08:21,936 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-12-05 21:08:21,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:08:21,937 INFO L85 PathProgramCache]: Analyzing trace with hash 790175196, now seen corresponding path program 1 times [2023-12-05 21:08:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:08:21,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419468904] [2023-12-05 21:08:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:08:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:08:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:08:21,997 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 21:08:21,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:08:21,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419468904] [2023-12-05 21:08:21,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419468904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:08:21,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:08:21,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:08:21,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042778189] [2023-12-05 21:08:21,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:08:21,999 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:08:22,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:08:22,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:08:22,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:08:22,004 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 116 [2023-12-05 21:08:22,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 21:08:22,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:08:22,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 116 [2023-12-05 21:08:22,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:08:22,041 INFO L124 PetriNetUnfolderBase]: 3/76 cut-off events. [2023-12-05 21:08:22,041 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-12-05 21:08:22,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 76 events. 3/76 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 4/80 useless extension candidates. Maximal degree in co-relation 65. Up to 13 conditions per place. [2023-12-05 21:08:22,042 INFO L140 encePairwiseOnDemand]: 114/116 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2023-12-05 21:08:22,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 67 transitions, 245 flow [2023-12-05 21:08:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:08:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:08:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-12-05 21:08:22,043 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7758620689655172 [2023-12-05 21:08:22,043 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-12-05 21:08:22,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-12-05 21:08:22,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:08:22,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-12-05 21:08:22,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 21:08:22,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 21:08:22,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 21:08:22,047 INFO L308 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2023-12-05 21:08:22,047 INFO L500 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 245 flow [2023-12-05 21:08:22,048 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 21:08:22,056 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/rfi002_tso.i_BEv2_AllErrorsAtOnce [2023-12-05 21:08:22,084 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-12-05 21:08:22,085 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-12-05 21:08:22,086 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-12-05 21:08:22,086 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-12-05 21:08:22,087 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-12-05 21:08:22,088 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-12-05 21:08:22,088 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:08:22,088 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-05 21:08:22,092 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:08:22,092 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:08:22,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:08:22 BasicIcfg [2023-12-05 21:08:22,100 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:08:22,102 INFO L158 Benchmark]: Toolchain (without parser) took 2451.81ms. Allocated memory is still 270.5MB. Free memory was 214.8MB in the beginning and 143.9MB in the end (delta: 70.8MB). Peak memory consumption was 71.9MB. Max. memory is 8.0GB. [2023-12-05 21:08:22,102 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 225.4MB. Free memory was 172.4MB in the beginning and 172.3MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:08:22,103 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.68ms. Allocated memory is still 270.5MB. Free memory was 214.8MB in the beginning and 187.0MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-05 21:08:22,103 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.22ms. Allocated memory is still 270.5MB. Free memory was 187.0MB in the beginning and 183.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-05 21:08:22,103 INFO L158 Benchmark]: Boogie Preprocessor took 54.07ms. Allocated memory is still 270.5MB. Free memory was 183.3MB in the beginning and 180.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:08:22,106 INFO L158 Benchmark]: RCFGBuilder took 741.59ms. Allocated memory is still 270.5MB. Free memory was 180.7MB in the beginning and 183.9MB in the end (delta: -3.2MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. [2023-12-05 21:08:22,107 INFO L158 Benchmark]: TraceAbstraction took 1071.91ms. Allocated memory is still 270.5MB. Free memory was 183.4MB in the beginning and 143.9MB in the end (delta: 39.4MB). Peak memory consumption was 39.9MB. Max. memory is 8.0GB. [2023-12-05 21:08:22,108 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 225.4MB. Free memory was 172.4MB in the beginning and 172.3MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 512.68ms. Allocated memory is still 270.5MB. Free memory was 214.8MB in the beginning and 187.0MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.22ms. Allocated memory is still 270.5MB. Free memory was 187.0MB in the beginning and 183.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.07ms. Allocated memory is still 270.5MB. Free memory was 183.3MB in the beginning and 180.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 741.59ms. Allocated memory is still 270.5MB. Free memory was 180.7MB in the beginning and 183.9MB in the end (delta: -3.2MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1071.91ms. Allocated memory is still 270.5MB. Free memory was 183.4MB in the beginning and 143.9MB in the end (delta: 39.4MB). Peak memory consumption was 39.9MB. 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, 135 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: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 22 mSDtfsCounter, 56 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=245occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 282 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 21:08:22,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...