/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:49:07,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:49:08,037 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 04:49:08,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:49:08,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:49:08,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:49:08,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:49:08,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:49:08,056 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:49:08,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:49:08,056 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:49:08,057 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:49:08,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:49:08,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:49:08,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:49:08,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:49:08,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:49:08,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:49:08,058 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:49:08,059 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:49:08,059 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:49:08,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:49:08,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:49:08,069 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:49:08,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:49:08,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:49:08,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:49:08,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:49:08,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:49:08,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:49:08,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:49:08,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:49:08,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:49:08,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:49:08,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:49:08,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:49:08,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:49:08,295 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:49:08,295 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:49:08,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_power.opt.i [2023-11-30 04:49:09,264 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:49:09,458 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:49:09,458 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_power.opt.i [2023-11-30 04:49:09,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf59a5be7/c97403d44088431ab38981dc33a8c3b4/FLAG10bd187a0 [2023-11-30 04:49:09,487 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf59a5be7/c97403d44088431ab38981dc33a8c3b4 [2023-11-30 04:49:09,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:49:09,490 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:49:09,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:49:09,492 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:49:09,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:49:09,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:09,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49eebfb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09, skipping insertion in model container [2023-11-30 04:49:09,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:09,539 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:49:09,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:49:09,805 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:49:09,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:49:09,933 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:49:09,933 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:49:09,938 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:49:09,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09 WrapperNode [2023-11-30 04:49:09,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:49:09,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:49:09,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:49:09,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:49:09,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:09,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:09,995 INFO L138 Inliner]: procedures = 177, calls = 92, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 186 [2023-11-30 04:49:09,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:49:09,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:49:09,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:49:09,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:49:10,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:10,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:10,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:10,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:10,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:10,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:10,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:10,041 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:10,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:49:10,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:49:10,045 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:49:10,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:49:10,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (1/1) ... [2023-11-30 04:49:10,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:49:10,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:49:10,081 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 04:49:10,099 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 04:49:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:49:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:49:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:49:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:49:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:49:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:49:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-30 04:49:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-30 04:49:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-30 04:49:10,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-30 04:49:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-30 04:49:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-30 04:49:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-30 04:49:10,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-30 04:49:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:49:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:49:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:49:10,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:49:10,108 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 04:49:10,240 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:49:10,242 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:49:10,746 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:49:11,148 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:49:11,148 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 04:49:11,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:49:11 BoogieIcfgContainer [2023-11-30 04:49:11,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:49:11,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:49:11,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:49:11,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:49:11,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:49:09" (1/3) ... [2023-11-30 04:49:11,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ef61a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:49:11, skipping insertion in model container [2023-11-30 04:49:11,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:49:09" (2/3) ... [2023-11-30 04:49:11,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ef61a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:49:11, skipping insertion in model container [2023-11-30 04:49:11,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:49:11" (3/3) ... [2023-11-30 04:49:11,156 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.opt.i [2023-11-30 04:49:11,168 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:49:11,169 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-11-30 04:49:11,169 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:49:11,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:49:11,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 213 transitions, 442 flow [2023-11-30 04:49:11,431 INFO L124 PetriNetUnfolderBase]: 3/209 cut-off events. [2023-11-30 04:49:11,431 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:49:11,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 3/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 362 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2023-11-30 04:49:11,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 213 transitions, 442 flow [2023-11-30 04:49:11,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 209 transitions, 430 flow [2023-11-30 04:49:11,455 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:49:11,463 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;@706d1fd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:49:11,463 INFO L363 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-11-30 04:49:11,481 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:49:11,481 INFO L124 PetriNetUnfolderBase]: 0/60 cut-off events. [2023-11-30 04:49:11,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:49:11,482 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:49:11,482 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-11-30 04:49:11,483 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-11-30 04:49:11,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:49:11,488 INFO L85 PathProgramCache]: Analyzing trace with hash 950315032, now seen corresponding path program 1 times [2023-11-30 04:49:11,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:49:11,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319108009] [2023-11-30 04:49:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:49:11,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:49:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:49:11,794 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 04:49:11,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:49:11,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319108009] [2023-11-30 04:49:11,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319108009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:49:11,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:49:11,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:49:11,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781263605] [2023-11-30 04:49:11,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:49:11,806 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:49:11,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:49:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:49:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:49:11,833 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 213 [2023-11-30 04:49:11,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 209 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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 04:49:11,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:49:11,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 213 [2023-11-30 04:49:11,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:50:05,467 INFO L124 PetriNetUnfolderBase]: 264264/431402 cut-off events. [2023-11-30 04:50:05,468 INFO L125 PetriNetUnfolderBase]: For 728/728 co-relation queries the response was YES. [2023-11-30 04:50:06,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774954 conditions, 431402 events. 264264/431402 cut-off events. For 728/728 co-relation queries the response was YES. Maximal size of possible extension queue 26282. Compared 4719463 event pairs, 172410 based on Foata normal form. 9477/191203 useless extension candidates. Maximal degree in co-relation 774875. Up to 223803 conditions per place. [2023-11-30 04:50:09,483 INFO L140 encePairwiseOnDemand]: 183/213 looper letters, 93 selfloop transitions, 2 changer transitions 0/207 dead transitions. [2023-11-30 04:50:09,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 207 transitions, 616 flow [2023-11-30 04:50:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:50:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:50:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-11-30 04:50:09,499 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7683881064162754 [2023-11-30 04:50:09,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-11-30 04:50:09,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-11-30 04:50:09,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:50:09,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-11-30 04:50:09,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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 04:50:09,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 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 04:50:09,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 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 04:50:09,511 INFO L307 CegarLoopForPetriNet]: 219 programPoint places, -26 predicate places. [2023-11-30 04:50:09,511 INFO L500 AbstractCegarLoop]: Abstraction has has 193 places, 207 transitions, 616 flow [2023-11-30 04:50:09,511 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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 04:50:09,512 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:50:09,512 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2023-11-30 04:50:09,512 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:50:09,512 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-11-30 04:50:09,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:50:09,512 INFO L85 PathProgramCache]: Analyzing trace with hash 950315033, now seen corresponding path program 1 times [2023-11-30 04:50:09,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:50:09,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547623178] [2023-11-30 04:50:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:50:09,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:50:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:50:09,596 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 04:50:09,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:50:09,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547623178] [2023-11-30 04:50:09,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547623178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:50:09,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:50:09,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:50:09,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575334652] [2023-11-30 04:50:09,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:50:09,597 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:50:09,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:50:09,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:50:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:50:09,598 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 213 [2023-11-30 04:50:09,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 207 transitions, 616 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 04:50:09,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:50:09,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 213 [2023-11-30 04:50:09,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand