/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/mix022_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:07:10,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:07:10,400 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 21:07:10,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:07:10,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:07:10,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:07:10,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:07:10,419 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:07:10,419 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:07:10,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:07:10,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:07:10,420 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:07:10,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:07:10,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:07:10,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:07:10,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:07:10,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:07:10,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:07:10,421 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:07:10,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:07:10,422 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:07:10,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:07:10,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:07:10,428 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:07:10,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:07:10,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:07:10,429 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:07:10,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:07:10,429 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:07:10,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:07:10,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:07:10,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:07:10,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:07:10,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:07:10,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:07:10,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:07:10,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:07:10,625 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:07:10,626 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:07:10,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2023-12-05 21:07:11,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:07:11,791 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:07:11,791 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2023-12-05 21:07:11,806 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ab43e81/4338dadb82c343c88edce4b3c1b43c74/FLAG833eded00 [2023-12-05 21:07:11,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ab43e81/4338dadb82c343c88edce4b3c1b43c74 [2023-12-05 21:07:11,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:07:11,819 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:07:11,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:07:11,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:07:11,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:07:11,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:07:11" (1/1) ... [2023-12-05 21:07:11,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66946c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:11, skipping insertion in model container [2023-12-05 21:07:11,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:07:11" (1/1) ... [2023-12-05 21:07:11,865 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:07:12,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:07:12,131 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:07:12,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:07:12,198 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:07:12,198 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:07:12,203 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:07:12,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12 WrapperNode [2023-12-05 21:07:12,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:07:12,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:07:12,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:07:12,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:07:12,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,258 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 155 [2023-12-05 21:07:12,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:07:12,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:07:12,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:07:12,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:07:12,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,278 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:07:12,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:07:12,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:07:12,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:07:12,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (1/1) ... [2023-12-05 21:07:12,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:07:12,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:07:12,310 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 21:07:12,311 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 21:07:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:07:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:07:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:07:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:07:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:07:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:07:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:07:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:07:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:07:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:07:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:07:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:07:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:07:12,330 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 21:07:12,420 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:07:12,422 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:07:12,663 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:07:12,788 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:07:12,789 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:07:12,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:07:12 BoogieIcfgContainer [2023-12-05 21:07:12,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:07:12,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:07:12,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:07:12,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:07:12,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:07:11" (1/3) ... [2023-12-05 21:07:12,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6f819a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:07:12, skipping insertion in model container [2023-12-05 21:07:12,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:12" (2/3) ... [2023-12-05 21:07:12,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6f819a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:07:12, skipping insertion in model container [2023-12-05 21:07:12,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:07:12" (3/3) ... [2023-12-05 21:07:12,795 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2023-12-05 21:07:12,807 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:07:12,807 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-12-05 21:07:12,807 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:07:12,840 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:07:12,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 99 transitions, 206 flow [2023-12-05 21:07:12,899 INFO L124 PetriNetUnfolderBase]: 3/97 cut-off events. [2023-12-05 21:07:12,899 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:07:12,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 97 events. 3/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2023-12-05 21:07:12,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 99 transitions, 206 flow [2023-12-05 21:07:12,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 107 flow [2023-12-05 21:07:12,916 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:07:12,921 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;@4797a09d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:07:12,921 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-05 21:07:12,929 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:07:12,930 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2023-12-05 21:07:12,930 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:07:12,930 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:12,930 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] [2023-12-05 21:07:12,931 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 21:07:12,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2111815700, now seen corresponding path program 1 times [2023-12-05 21:07:12,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:12,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335912665] [2023-12-05 21:07:12,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:12,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:13,207 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 21:07:13,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:13,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335912665] [2023-12-05 21:07:13,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335912665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:13,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:13,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:13,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343924884] [2023-12-05 21:07:13,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:13,215 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:13,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:13,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:13,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:13,243 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 99 [2023-12-05 21:07:13,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 21:07:13,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:13,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 99 [2023-12-05 21:07:13,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:13,287 INFO L124 PetriNetUnfolderBase]: 2/58 cut-off events. [2023-12-05 21:07:13,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:07:13,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 2 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 28. Up to 11 conditions per place. [2023-12-05 21:07:13,289 INFO L140 encePairwiseOnDemand]: 97/99 looper letters, 10 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-12-05 21:07:13,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 127 flow [2023-12-05 21:07:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2023-12-05 21:07:13,298 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7676767676767676 [2023-12-05 21:07:13,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2023-12-05 21:07:13,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2023-12-05 21:07:13,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:13,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2023-12-05 21:07:13,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 21:07:13,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 21:07:13,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 21:07:13,309 INFO L308 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2023-12-05 21:07:13,309 INFO L500 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 127 flow [2023-12-05 21:07:13,309 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 21:07:13,309 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:13,309 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] [2023-12-05 21:07:13,309 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:07:13,310 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 21:07:13,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:13,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2111815701, now seen corresponding path program 1 times [2023-12-05 21:07:13,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:13,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258901371] [2023-12-05 21:07:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:13,416 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 21:07:13,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:13,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258901371] [2023-12-05 21:07:13,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258901371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:13,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:13,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:13,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718760053] [2023-12-05 21:07:13,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:13,419 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:13,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:13,420 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 99 [2023-12-05 21:07:13,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 21:07:13,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:13,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 99 [2023-12-05 21:07:13,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:13,453 INFO L124 PetriNetUnfolderBase]: 3/58 cut-off events. [2023-12-05 21:07:13,454 INFO L125 PetriNetUnfolderBase]: For 9/11 co-relation queries the response was YES. [2023-12-05 21:07:13,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 58 events. 3/58 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 3 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 38. Up to 11 conditions per place. [2023-12-05 21:07:13,454 INFO L140 encePairwiseOnDemand]: 97/99 looper letters, 8 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-12-05 21:07:13,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 141 flow [2023-12-05 21:07:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-12-05 21:07:13,460 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7811447811447811 [2023-12-05 21:07:13,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-12-05 21:07:13,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-12-05 21:07:13,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:13,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-12-05 21:07:13,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 21:07:13,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 21:07:13,464 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 21:07:13,465 INFO L308 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-12-05 21:07:13,465 INFO L500 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 141 flow [2023-12-05 21:07:13,465 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 21:07:13,465 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:13,465 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] [2023-12-05 21:07:13,465 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:07:13,466 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 21:07:13,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:13,467 INFO L85 PathProgramCache]: Analyzing trace with hash -845649750, now seen corresponding path program 1 times [2023-12-05 21:07:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930458861] [2023-12-05 21:07:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:13,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:13,562 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 21:07:13,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:13,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930458861] [2023-12-05 21:07:13,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930458861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:13,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:13,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:13,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302256819] [2023-12-05 21:07:13,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:13,563 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:13,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:13,564 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 99 [2023-12-05 21:07:13,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 21:07:13,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:13,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 99 [2023-12-05 21:07:13,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:13,591 INFO L124 PetriNetUnfolderBase]: 2/59 cut-off events. [2023-12-05 21:07:13,594 INFO L125 PetriNetUnfolderBase]: For 24/28 co-relation queries the response was YES. [2023-12-05 21:07:13,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 59 events. 2/59 cut-off events. For 24/28 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 1 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 42. Up to 10 conditions per place. [2023-12-05 21:07:13,596 INFO L140 encePairwiseOnDemand]: 97/99 looper letters, 9 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-12-05 21:07:13,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 163 flow [2023-12-05 21:07:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-12-05 21:07:13,597 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7845117845117845 [2023-12-05 21:07:13,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-12-05 21:07:13,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-12-05 21:07:13,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:13,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-12-05 21:07:13,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 21:07:13,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 21:07:13,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 21:07:13,601 INFO L308 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-12-05 21:07:13,601 INFO L500 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 163 flow [2023-12-05 21:07:13,602 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 21:07:13,602 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:13,602 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] [2023-12-05 21:07:13,602 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:07:13,602 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 21:07:13,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:13,603 INFO L85 PathProgramCache]: Analyzing trace with hash -845649751, now seen corresponding path program 1 times [2023-12-05 21:07:13,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:13,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405130721] [2023-12-05 21:07:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:13,659 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 21:07:13,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:13,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405130721] [2023-12-05 21:07:13,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405130721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:13,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:13,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:13,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566548994] [2023-12-05 21:07:13,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:13,660 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:13,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:13,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:13,665 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 99 [2023-12-05 21:07:13,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 21:07:13,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:13,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 99 [2023-12-05 21:07:13,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:13,688 INFO L124 PetriNetUnfolderBase]: 1/52 cut-off events. [2023-12-05 21:07:13,688 INFO L125 PetriNetUnfolderBase]: For 48/54 co-relation queries the response was YES. [2023-12-05 21:07:13,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 52 events. 1/52 cut-off events. For 48/54 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 4/56 useless extension candidates. Maximal degree in co-relation 32. Up to 9 conditions per place. [2023-12-05 21:07:13,689 INFO L140 encePairwiseOnDemand]: 97/99 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2023-12-05 21:07:13,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 177 flow [2023-12-05 21:07:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-12-05 21:07:13,691 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7643097643097643 [2023-12-05 21:07:13,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-12-05 21:07:13,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-12-05 21:07:13,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:13,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-12-05 21:07:13,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 21:07:13,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 21:07:13,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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 21:07:13,694 INFO L308 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-12-05 21:07:13,695 INFO L500 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 177 flow [2023-12-05 21:07:13,696 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 21:07:13,703 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix022_tso.i_BEv2_AllErrorsAtOnce [2023-12-05 21:07:13,722 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-12-05 21:07:13,723 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-12-05 21:07:13,724 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-12-05 21:07:13,724 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-12-05 21:07:13,724 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-12-05 21:07:13,724 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-12-05 21:07:13,724 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:07:13,725 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-05 21:07:13,727 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:07:13,727 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:07:13,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:07:13 BasicIcfg [2023-12-05 21:07:13,735 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:07:13,737 INFO L158 Benchmark]: Toolchain (without parser) took 1916.38ms. Allocated memory is still 299.9MB. Free memory was 254.1MB in the beginning and 161.7MB in the end (delta: 92.4MB). Peak memory consumption was 93.5MB. Max. memory is 8.0GB. [2023-12-05 21:07:13,737 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:07:13,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.17ms. Allocated memory is still 299.9MB. Free memory was 253.7MB in the beginning and 230.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:13,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.75ms. Allocated memory is still 299.9MB. Free memory was 230.0MB in the beginning and 226.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:13,738 INFO L158 Benchmark]: Boogie Preprocessor took 21.87ms. Allocated memory is still 299.9MB. Free memory was 226.8MB in the beginning and 225.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:13,741 INFO L158 Benchmark]: RCFGBuilder took 506.80ms. Allocated memory is still 299.9MB. Free memory was 225.0MB in the beginning and 267.6MB in the end (delta: -42.6MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. [2023-12-05 21:07:13,741 INFO L158 Benchmark]: TraceAbstraction took 943.36ms. Allocated memory is still 299.9MB. Free memory was 267.1MB in the beginning and 161.7MB in the end (delta: 105.4MB). Peak memory consumption was 104.9MB. Max. memory is 8.0GB. [2023-12-05 21:07:13,742 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 384.17ms. Allocated memory is still 299.9MB. Free memory was 253.7MB in the beginning and 230.0MB in the end (delta: 23.7MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.75ms. Allocated memory is still 299.9MB. Free memory was 230.0MB in the beginning and 226.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.87ms. Allocated memory is still 299.9MB. Free memory was 226.8MB in the beginning and 225.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 506.80ms. Allocated memory is still 299.9MB. Free memory was 225.0MB in the beginning and 267.6MB in the end (delta: -42.6MB). Peak memory consumption was 46.3MB. Max. memory is 8.0GB. * TraceAbstraction took 943.36ms. Allocated memory is still 299.9MB. Free memory was 267.1MB in the beginning and 161.7MB in the end (delta: 105.4MB). Peak memory consumption was 104.9MB. 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, 116 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, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 22 mSDtfsCounter, 39 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=177occurred 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, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 222 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 21:07:13,759 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...