/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/triangular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:15:07,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:15:07,958 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 04:15:07,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:15:07,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:15:07,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:15:07,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:15:07,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:15:07,995 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:15:07,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:15:07,999 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:15:08,000 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:15:08,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:15:08,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:15:08,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:15:08,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:15:08,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:15:08,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:15:08,002 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:15:08,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:15:08,002 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:15:08,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:15:08,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:15:08,003 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:15:08,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:15:08,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:15:08,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:15:08,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:15:08,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:15:08,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:15:08,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:15:08,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:15:08,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:15:08,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:15:08,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:15:08,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:15:08,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:15:08,247 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:15:08,248 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:15:08,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2023-11-30 04:15:09,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:15:09,415 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:15:09,415 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2023-11-30 04:15:09,426 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0958792b/353a480d4e354e0eb32e162537fe313e/FLAG6a6608c5f [2023-11-30 04:15:09,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0958792b/353a480d4e354e0eb32e162537fe313e [2023-11-30 04:15:09,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:15:09,440 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:15:09,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:15:09,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:15:09,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:15:09,445 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11badd27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09, skipping insertion in model container [2023-11-30 04:15:09,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,477 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:15:09,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:15:09,761 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:15:09,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:15:09,823 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:15:09,823 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:15:09,827 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:15:09,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09 WrapperNode [2023-11-30 04:15:09,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:15:09,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:15:09,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:15:09,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:15:09,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,873 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-30 04:15:09,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:15:09,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:15:09,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:15:09,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:15:09,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,894 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:15:09,900 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:15:09,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:15:09,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:15:09,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (1/1) ... [2023-11-30 04:15:09,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:15:09,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:15:09,921 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 04:15:09,923 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 04:15:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-30 04:15:09,956 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-30 04:15:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-30 04:15:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-30 04:15:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:15:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:15:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:15:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:15:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:15:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:15:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:15:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:15:09,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:15:09,959 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 04:15:10,049 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:15:10,051 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:15:10,149 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:15:10,165 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:15:10,165 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 04:15:10,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:15:10 BoogieIcfgContainer [2023-11-30 04:15:10,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:15:10,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:15:10,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:15:10,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:15:10,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:15:09" (1/3) ... [2023-11-30 04:15:10,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c87ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:15:10, skipping insertion in model container [2023-11-30 04:15:10,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:09" (2/3) ... [2023-11-30 04:15:10,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c87ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:15:10, skipping insertion in model container [2023-11-30 04:15:10,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:15:10" (3/3) ... [2023-11-30 04:15:10,172 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-11-30 04:15:10,183 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:15:10,183 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-30 04:15:10,183 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:15:10,221 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:15:10,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 160 flow [2023-11-30 04:15:10,297 INFO L124 PetriNetUnfolderBase]: 6/74 cut-off events. [2023-11-30 04:15:10,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:15:10,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 74 events. 6/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2023-11-30 04:15:10,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 76 transitions, 160 flow [2023-11-30 04:15:10,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 74 transitions, 154 flow [2023-11-30 04:15:10,315 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:15:10,320 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;@749f26d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:15:10,320 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-30 04:15:10,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:15:10,331 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-11-30 04:15:10,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:15:10,331 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:10,332 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:15:10,332 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 04:15:10,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:10,351 INFO L85 PathProgramCache]: Analyzing trace with hash 836030767, now seen corresponding path program 1 times [2023-11-30 04:15:10,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:10,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942895997] [2023-11-30 04:15:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:10,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:10,637 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 04:15:10,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:10,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942895997] [2023-11-30 04:15:10,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942895997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:10,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:10,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:10,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496902145] [2023-11-30 04:15:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:10,645 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:10,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:10,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:10,670 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 76 [2023-11-30 04:15:10,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 04:15:10,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:10,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 76 [2023-11-30 04:15:10,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:10,705 INFO L124 PetriNetUnfolderBase]: 2/66 cut-off events. [2023-11-30 04:15:10,705 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:15:10,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 15/76 useless extension candidates. Maximal degree in co-relation 56. Up to 9 conditions per place. [2023-11-30 04:15:10,707 INFO L140 encePairwiseOnDemand]: 69/76 looper letters, 14 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-30 04:15:10,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 170 flow [2023-11-30 04:15:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-11-30 04:15:10,716 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8114035087719298 [2023-11-30 04:15:10,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-11-30 04:15:10,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-11-30 04:15:10,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:10,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-11-30 04:15:10,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 04:15:10,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 04:15:10,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 04:15:10,726 INFO L307 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2023-11-30 04:15:10,726 INFO L500 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 170 flow [2023-11-30 04:15:10,726 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 04:15:10,726 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:10,726 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:15:10,727 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:15:10,727 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 04:15:10,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash 836030768, now seen corresponding path program 1 times [2023-11-30 04:15:10,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:10,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090921848] [2023-11-30 04:15:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:10,823 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 04:15:10,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:10,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090921848] [2023-11-30 04:15:10,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090921848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:10,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:10,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:10,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444041241] [2023-11-30 04:15:10,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:10,825 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:10,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:10,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:10,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:10,826 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 76 [2023-11-30 04:15:10,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 04:15:10,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:10,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 76 [2023-11-30 04:15:10,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:10,856 INFO L124 PetriNetUnfolderBase]: 2/65 cut-off events. [2023-11-30 04:15:10,857 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-30 04:15:10,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 65 events. 2/65 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 62. Up to 9 conditions per place. [2023-11-30 04:15:10,858 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 11 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-30 04:15:10,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 65 transitions, 192 flow [2023-11-30 04:15:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2023-11-30 04:15:10,859 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7982456140350878 [2023-11-30 04:15:10,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2023-11-30 04:15:10,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2023-11-30 04:15:10,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:10,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2023-11-30 04:15:10,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 04:15:10,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 04:15:10,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 04:15:10,862 INFO L307 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2023-11-30 04:15:10,862 INFO L500 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 192 flow [2023-11-30 04:15:10,863 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 04:15:10,863 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:10,863 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] [2023-11-30 04:15:10,863 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:15:10,863 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)] === [2023-11-30 04:15:10,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:10,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1534221550, now seen corresponding path program 1 times [2023-11-30 04:15:10,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:10,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948382636] [2023-11-30 04:15:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:10,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:10,923 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 04:15:10,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:10,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948382636] [2023-11-30 04:15:10,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948382636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:10,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:10,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:10,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770750329] [2023-11-30 04:15:10,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:10,925 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:10,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:10,926 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 76 [2023-11-30 04:15:10,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 04:15:10,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:10,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 76 [2023-11-30 04:15:10,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:10,960 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-11-30 04:15:10,960 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-30 04:15:10,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 64 events. 2/64 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 66. Up to 9 conditions per place. [2023-11-30 04:15:10,961 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 11 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-30 04:15:10,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 214 flow [2023-11-30 04:15:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:10,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 182 transitions. [2023-11-30 04:15:10,966 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7982456140350878 [2023-11-30 04:15:10,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 182 transitions. [2023-11-30 04:15:10,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 182 transitions. [2023-11-30 04:15:10,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:10,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 182 transitions. [2023-11-30 04:15:10,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 04:15:10,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 04:15:10,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 04:15:10,969 INFO L307 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-11-30 04:15:10,969 INFO L500 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 214 flow [2023-11-30 04:15:10,969 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 04:15:10,969 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:10,969 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] [2023-11-30 04:15:10,969 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:15:10,970 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)] === [2023-11-30 04:15:10,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:10,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1534221549, now seen corresponding path program 1 times [2023-11-30 04:15:10,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:10,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378171444] [2023-11-30 04:15:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:10,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:11,023 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 04:15:11,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:11,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378171444] [2023-11-30 04:15:11,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378171444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:11,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:11,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:11,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928225647] [2023-11-30 04:15:11,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:11,025 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:11,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:11,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:11,032 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 76 [2023-11-30 04:15:11,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 04:15:11,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:11,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 76 [2023-11-30 04:15:11,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:11,071 INFO L124 PetriNetUnfolderBase]: 2/63 cut-off events. [2023-11-30 04:15:11,072 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-30 04:15:11,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 63 events. 2/63 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 1/61 useless extension candidates. Maximal degree in co-relation 70. Up to 10 conditions per place. [2023-11-30 04:15:11,073 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2023-11-30 04:15:11,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 236 flow [2023-11-30 04:15:11,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-11-30 04:15:11,076 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7763157894736842 [2023-11-30 04:15:11,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-11-30 04:15:11,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-11-30 04:15:11,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:11,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-11-30 04:15:11,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 04:15:11,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 04:15:11,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 04:15:11,081 INFO L307 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2023-11-30 04:15:11,081 INFO L500 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 236 flow [2023-11-30 04:15:11,081 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 04:15:11,087 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/triangular-1.i_BEv2_AllErrorsAtOnce [2023-11-30 04:15:11,117 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-11-30 04:15:11,119 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-11-30 04:15:11,120 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-11-30 04:15:11,120 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-11-30 04:15:11,120 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-11-30 04:15:11,120 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-11-30 04:15:11,120 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:15:11,121 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-30 04:15:11,124 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:15:11,125 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:15:11,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:15:11 BasicIcfg [2023-11-30 04:15:11,136 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:15:11,138 INFO L158 Benchmark]: Toolchain (without parser) took 1695.97ms. Allocated memory is still 509.6MB. Free memory was 460.3MB in the beginning and 388.1MB in the end (delta: 72.2MB). Peak memory consumption was 75.3MB. Max. memory is 16.0GB. [2023-11-30 04:15:11,138 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 346.0MB. Free memory was 292.2MB in the beginning and 292.1MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:15:11,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.00ms. Allocated memory is still 509.6MB. Free memory was 460.3MB in the beginning and 440.7MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-11-30 04:15:11,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.37ms. Allocated memory is still 509.6MB. Free memory was 440.7MB in the beginning and 438.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:15:11,140 INFO L158 Benchmark]: Boogie Preprocessor took 25.69ms. Allocated memory is still 509.6MB. Free memory was 438.6MB in the beginning and 437.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:15:11,144 INFO L158 Benchmark]: RCFGBuilder took 266.27ms. Allocated memory is still 509.6MB. Free memory was 437.1MB in the beginning and 423.8MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-11-30 04:15:11,144 INFO L158 Benchmark]: TraceAbstraction took 968.09ms. Allocated memory is still 509.6MB. Free memory was 423.2MB in the beginning and 388.1MB in the end (delta: 35.1MB). Peak memory consumption was 37.6MB. Max. memory is 16.0GB. [2023-11-30 04:15:11,145 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 346.0MB. Free memory was 292.2MB in the beginning and 292.1MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 387.00ms. Allocated memory is still 509.6MB. Free memory was 460.3MB in the beginning and 440.7MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.37ms. Allocated memory is still 509.6MB. Free memory was 440.7MB in the beginning and 438.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.69ms. Allocated memory is still 509.6MB. Free memory was 438.6MB in the beginning and 437.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 266.27ms. Allocated memory is still 509.6MB. Free memory was 437.1MB in the beginning and 423.8MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 968.09ms. Allocated memory is still 509.6MB. Free memory was 423.2MB in the beginning and 388.1MB in the end (delta: 35.1MB). Peak memory consumption was 37.6MB. 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, 95 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, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 30 mSDtfsCounter, 54 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred 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, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 232 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 04:15:11,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...