/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:50:59,038 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:50:59,114 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 04:50:59,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:50:59,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:50:59,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:50:59,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:50:59,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:50:59,147 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:50:59,151 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:50:59,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:50:59,152 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:50:59,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:50:59,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:50:59,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:50:59,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:50:59,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:50:59,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:50:59,154 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:50:59,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:50:59,154 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:50:59,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:50:59,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:50:59,155 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:50:59,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:50:59,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:50:59,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:50:59,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:50:59,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:50:59,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:50:59,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:50:59,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:50:59,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:50:59,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:50:59,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:50:59,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:50:59,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:50:59,383 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:50:59,384 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:50:59,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2023-11-30 04:51:00,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:51:00,790 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:51:00,791 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2023-11-30 04:51:00,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6986a1d9c/1fee18a0de1e495e9ee9b136977726d9/FLAG8b3719d9a [2023-11-30 04:51:00,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6986a1d9c/1fee18a0de1e495e9ee9b136977726d9 [2023-11-30 04:51:00,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:51:00,816 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:51:00,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:51:00,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:51:00,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:51:00,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:51:00" (1/1) ... [2023-11-30 04:51:00,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4f1a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:00, skipping insertion in model container [2023-11-30 04:51:00,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:51:00" (1/1) ... [2023-11-30 04:51:00,882 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:51:01,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:51:01,194 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:51:01,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:51:01,282 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:51:01,283 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:51:01,289 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:51:01,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01 WrapperNode [2023-11-30 04:51:01,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:51:01,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:51:01,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:51:01,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:51:01,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,322 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,343 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-30 04:51:01,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:51:01,344 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:51:01,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:51:01,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:51:01,351 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:51:01,385 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:51:01,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:51:01,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:51:01,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (1/1) ... [2023-11-30 04:51:01,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:51:01,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:51:01,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 04:51:01,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 04:51:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:51:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:51:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:51:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:51:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:51:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-30 04:51:01,453 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-30 04:51:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-30 04:51:01,454 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-30 04:51:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:51:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:51:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:51:01,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:51:01,455 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 04:51:01,589 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:51:01,590 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:51:01,729 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:51:01,737 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:51:01,737 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 04:51:01,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:51:01 BoogieIcfgContainer [2023-11-30 04:51:01,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:51:01,741 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:51:01,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:51:01,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:51:01,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:51:00" (1/3) ... [2023-11-30 04:51:01,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54acc99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:51:01, skipping insertion in model container [2023-11-30 04:51:01,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:01" (2/3) ... [2023-11-30 04:51:01,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54acc99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:51:01, skipping insertion in model container [2023-11-30 04:51:01,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:51:01" (3/3) ... [2023-11-30 04:51:01,746 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2023-11-30 04:51:01,760 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:51:01,761 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-30 04:51:01,761 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:51:01,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:51:01,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 82 transitions, 172 flow [2023-11-30 04:51:01,923 INFO L124 PetriNetUnfolderBase]: 3/80 cut-off events. [2023-11-30 04:51:01,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:51:01,932 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 64 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-30 04:51:01,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 82 transitions, 172 flow [2023-11-30 04:51:01,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 36 transitions, 75 flow [2023-11-30 04:51:01,956 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:51:01,962 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;@6979c844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:51:01,962 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-30 04:51:01,969 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:51:01,969 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-30 04:51:01,969 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:51:01,969 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:51:01,970 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:51:01,970 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)] === [2023-11-30 04:51:01,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:51:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1571428602, now seen corresponding path program 1 times [2023-11-30 04:51:01,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:51:01,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515592455] [2023-11-30 04:51:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:51:01,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:51:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:51:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:51:02,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:51:02,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515592455] [2023-11-30 04:51:02,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515592455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:51:02,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:51:02,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:51:02,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16799975] [2023-11-30 04:51:02,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:51:02,237 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:51:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:51:02,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:51:02,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:51:02,272 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 82 [2023-11-30 04:51:02,274 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) [2023-11-30 04:51:02,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:51:02,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 82 [2023-11-30 04:51:02,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:51:02,317 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2023-11-30 04:51:02,317 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:51:02,318 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. [2023-11-30 04:51:02,319 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 9 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-30 04:51:02,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 93 flow [2023-11-30 04:51:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:51:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:51:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2023-11-30 04:51:02,332 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7886178861788617 [2023-11-30 04:51:02,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2023-11-30 04:51:02,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2023-11-30 04:51:02,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:51:02,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2023-11-30 04:51:02,343 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) [2023-11-30 04:51:02,348 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) [2023-11-30 04:51:02,348 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) [2023-11-30 04:51:02,351 INFO L307 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-11-30 04:51:02,351 INFO L500 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 93 flow [2023-11-30 04:51:02,352 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) [2023-11-30 04:51:02,352 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:51:02,352 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:51:02,352 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:51:02,353 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)] === [2023-11-30 04:51:02,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:51:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1571428603, now seen corresponding path program 1 times [2023-11-30 04:51:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:51:02,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434860100] [2023-11-30 04:51:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:51:02,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:51:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:51:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:51:02,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:51:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434860100] [2023-11-30 04:51:02,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434860100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:51:02,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:51:02,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:51:02,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331612779] [2023-11-30 04:51:02,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:51:02,494 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:51:02,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:51:02,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:51:02,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:51:02,496 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2023-11-30 04:51:02,496 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) [2023-11-30 04:51:02,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:51:02,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2023-11-30 04:51:02,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:51:02,512 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2023-11-30 04:51:02,513 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-30 04:51:02,513 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. [2023-11-30 04:51:02,513 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 7 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-11-30 04:51:02,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 105 flow [2023-11-30 04:51:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:51:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:51:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2023-11-30 04:51:02,515 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8048780487804879 [2023-11-30 04:51:02,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2023-11-30 04:51:02,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2023-11-30 04:51:02,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:51:02,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2023-11-30 04:51:02,517 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) [2023-11-30 04:51:02,517 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) [2023-11-30 04:51:02,518 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) [2023-11-30 04:51:02,518 INFO L307 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-11-30 04:51:02,519 INFO L500 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 105 flow [2023-11-30 04:51:02,519 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) [2023-11-30 04:51:02,519 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:51:02,519 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:51:02,519 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:51:02,520 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)] === [2023-11-30 04:51:02,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:51:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1756021342, now seen corresponding path program 1 times [2023-11-30 04:51:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:51:02,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212016024] [2023-11-30 04:51:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:51:02,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:51:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:51:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:51:02,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:51:02,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212016024] [2023-11-30 04:51:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212016024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:51:02,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:51:02,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:51:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279400367] [2023-11-30 04:51:02,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:51:02,590 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:51:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:51:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:51:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:51:02,592 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 82 [2023-11-30 04:51:02,592 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) [2023-11-30 04:51:02,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:51:02,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 82 [2023-11-30 04:51:02,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:51:02,608 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-11-30 04:51:02,608 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-30 04:51:02,609 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. [2023-11-30 04:51:02,609 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 8 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-30 04:51:02,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 119 flow [2023-11-30 04:51:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:51:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:51:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-30 04:51:02,611 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7845528455284553 [2023-11-30 04:51:02,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-30 04:51:02,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-30 04:51:02,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:51:02,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-30 04:51:02,612 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) [2023-11-30 04:51:02,613 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) [2023-11-30 04:51:02,613 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) [2023-11-30 04:51:02,613 INFO L307 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-11-30 04:51:02,614 INFO L500 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 119 flow [2023-11-30 04:51:02,614 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) [2023-11-30 04:51:02,614 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:51:02,614 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:51:02,614 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:51:02,614 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)] === [2023-11-30 04:51:02,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:51:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1756021341, now seen corresponding path program 1 times [2023-11-30 04:51:02,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:51:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748425815] [2023-11-30 04:51:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:51:02,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:51:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:51:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:51:02,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:51:02,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748425815] [2023-11-30 04:51:02,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748425815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:51:02,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:51:02,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:51:02,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58462788] [2023-11-30 04:51:02,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:51:02,709 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:51:02,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:51:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:51:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:51:02,711 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2023-11-30 04:51:02,711 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) [2023-11-30 04:51:02,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:51:02,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2023-11-30 04:51:02,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:51:02,734 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-30 04:51:02,734 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-30 04:51:02,735 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. [2023-11-30 04:51:02,735 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2023-11-30 04:51:02,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 127 flow [2023-11-30 04:51:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:51:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:51:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2023-11-30 04:51:02,738 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8008130081300813 [2023-11-30 04:51:02,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2023-11-30 04:51:02,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2023-11-30 04:51:02,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:51:02,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2023-11-30 04:51:02,740 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) [2023-11-30 04:51:02,743 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) [2023-11-30 04:51:02,743 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) [2023-11-30 04:51:02,744 INFO L307 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-11-30 04:51:02,744 INFO L500 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 127 flow [2023-11-30 04:51:02,744 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) [2023-11-30 04:51:02,750 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe022_tso.i_BEv2_AllErrorsAtOnce [2023-11-30 04:51:02,780 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-11-30 04:51:02,781 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-30 04:51:02,781 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-30 04:51:02,781 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-11-30 04:51:02,781 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-30 04:51:02,781 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-11-30 04:51:02,782 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:51:02,782 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-30 04:51:02,784 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:51:02,784 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:51:02,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:51:02 BasicIcfg [2023-11-30 04:51:02,791 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:51:02,791 INFO L158 Benchmark]: Toolchain (without parser) took 1975.15ms. Allocated memory is still 539.0MB. Free memory was 482.4MB in the beginning and 424.8MB in the end (delta: 57.5MB). Peak memory consumption was 55.8MB. Max. memory is 16.0GB. [2023-11-30 04:51:02,792 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 358.6MB. Free memory was 306.6MB in the beginning and 306.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:51:02,792 INFO L158 Benchmark]: CACSL2BoogieTranslator took 472.90ms. Allocated memory is still 539.0MB. Free memory was 482.0MB in the beginning and 462.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-30 04:51:02,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.50ms. Allocated memory is still 539.0MB. Free memory was 462.1MB in the beginning and 460.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:51:02,793 INFO L158 Benchmark]: Boogie Preprocessor took 39.65ms. Allocated memory is still 539.0MB. Free memory was 460.1MB in the beginning and 458.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:51:02,794 INFO L158 Benchmark]: RCFGBuilder took 354.20ms. Allocated memory is still 539.0MB. Free memory was 458.6MB in the beginning and 445.2MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 04:51:02,794 INFO L158 Benchmark]: TraceAbstraction took 1049.78ms. Allocated memory is still 539.0MB. Free memory was 444.6MB in the beginning and 424.8MB in the end (delta: 19.8MB). Peak memory consumption was 18.0MB. Max. memory is 16.0GB. [2023-11-30 04:51:02,796 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 358.6MB. Free memory was 306.6MB in the beginning and 306.5MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 472.90ms. Allocated memory is still 539.0MB. Free memory was 482.0MB in the beginning and 462.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.50ms. Allocated memory is still 539.0MB. Free memory was 462.1MB in the beginning and 460.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.65ms. Allocated memory is still 539.0MB. Free memory was 460.1MB in the beginning and 458.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 354.20ms. Allocated memory is still 539.0MB. Free memory was 458.6MB in the beginning and 445.2MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 1049.78ms. Allocated memory is still 539.0MB. Free memory was 444.6MB in the beginning and 424.8MB in the end (delta: 19.8MB). Peak memory consumption was 18.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 98 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: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, 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, 0.4s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 158 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! [2023-11-30 04:51:02,831 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...