/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/weaver/parallel-ticket-7.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:35:34,904 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:35:34,969 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 05:35:34,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:35:34,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:35:34,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:35:34,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:35:34,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:35:34,994 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:35:34,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:35:34,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:35:34,997 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:35:34,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:35:34,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:35:34,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:35:34,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:35:34,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:35:34,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:35:34,999 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:35:34,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:35:34,999 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:35:35,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:35:35,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:35:35,000 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:35:35,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:35:35,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:35:35,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:35:35,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:35:35,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:35:35,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:35:35,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:35:35,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:35:35,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:35:35,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:35:35,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:35:35,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:35:35,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:35:35,194 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:35:35,194 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:35:35,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c [2023-11-30 05:35:36,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:35:36,300 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:35:36,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c [2023-11-30 05:35:36,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca1f7a1b2/a63045fc86e94f4b8205e523b0811989/FLAGcd21895b0 [2023-11-30 05:35:36,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca1f7a1b2/a63045fc86e94f4b8205e523b0811989 [2023-11-30 05:35:36,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:35:36,316 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:35:36,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:35:36,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:35:36,319 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:35:36,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab83af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36, skipping insertion in model container [2023-11-30 05:35:36,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,338 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:35:36,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:35:36,454 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:35:36,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:35:36,483 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:35:36,484 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:35:36,489 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:35:36,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36 WrapperNode [2023-11-30 05:35:36,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:35:36,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:35:36,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:35:36,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:35:36,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,525 INFO L138 Inliner]: procedures = 26, calls = 116, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 337 [2023-11-30 05:35:36,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:35:36,526 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:35:36,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:35:36,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:35:36,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:35:36,547 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:35:36,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:35:36,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:35:36,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (1/1) ... [2023-11-30 05:35:36,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:35:36,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:35:36,568 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 05:35:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:35:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:35:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:35:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:35:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 05:35:36,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 05:35:36,581 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 05:35:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 05:35:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-30 05:35:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-30 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-30 05:35:36,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-30 05:35:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-30 05:35:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-30 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-30 05:35:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-30 05:35:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-11-30 05:35:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-11-30 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:35:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:35:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:35:36,601 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 05:35:36,682 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:35:36,684 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:35:37,082 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:35:37,156 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:35:37,156 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 05:35:37,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:35:37 BoogieIcfgContainer [2023-11-30 05:35:37,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:35:37,159 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:35:37,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:35:37,161 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:35:37,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:35:36" (1/3) ... [2023-11-30 05:35:37,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1f8d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:35:37, skipping insertion in model container [2023-11-30 05:35:37,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:36" (2/3) ... [2023-11-30 05:35:37,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1f8d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:35:37, skipping insertion in model container [2023-11-30 05:35:37,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:35:37" (3/3) ... [2023-11-30 05:35:37,163 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-7.wvr.c [2023-11-30 05:35:37,190 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:35:37,191 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-30 05:35:37,191 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:35:37,271 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-11-30 05:35:37,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 255 transitions, 559 flow [2023-11-30 05:35:37,390 INFO L124 PetriNetUnfolderBase]: 2/248 cut-off events. [2023-11-30 05:35:37,390 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 05:35:37,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 248 events. 2/248 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 209 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-11-30 05:35:37,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 255 transitions, 559 flow [2023-11-30 05:35:37,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 215 transitions, 469 flow [2023-11-30 05:35:37,412 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:35:37,420 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;@3fde5c3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:35:37,420 INFO L363 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-30 05:35:37,430 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:35:37,430 INFO L124 PetriNetUnfolderBase]: 1/80 cut-off events. [2023-11-30 05:35:37,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:35:37,431 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:35:37,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:35:37,431 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-30 05:35:37,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:35:37,435 INFO L85 PathProgramCache]: Analyzing trace with hash 619099753, now seen corresponding path program 1 times [2023-11-30 05:35:37,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:35:37,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480246956] [2023-11-30 05:35:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:35:37,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:35:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:35:38,056 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 05:35:38,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:35:38,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480246956] [2023-11-30 05:35:38,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480246956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:35:38,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:35:38,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:35:38,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4824112] [2023-11-30 05:35:38,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:35:38,064 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:35:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:35:38,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:35:38,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:35:38,084 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 255 [2023-11-30 05:35:38,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 215 transitions, 469 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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 05:35:38,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:35:38,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 255 [2023-11-30 05:35:38,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:36:32,683 INFO L124 PetriNetUnfolderBase]: 380928/543466 cut-off events. [2023-11-30 05:36:32,684 INFO L125 PetriNetUnfolderBase]: For 15699/15699 co-relation queries the response was YES. [2023-11-30 05:36:35,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022706 conditions, 543466 events. 380928/543466 cut-off events. For 15699/15699 co-relation queries the response was YES. Maximal size of possible extension queue 16323. Compared 4678297 event pairs, 380928 based on Foata normal form. 1/513434 useless extension candidates. Maximal degree in co-relation 834208. Up to 462845 conditions per place. [2023-11-30 05:36:39,458 INFO L140 encePairwiseOnDemand]: 251/255 looper letters, 71 selfloop transitions, 1 changer transitions 1/212 dead transitions. [2023-11-30 05:36:39,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 212 transitions, 607 flow [2023-11-30 05:36:39,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:36:39,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:36:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2023-11-30 05:36:39,494 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7529411764705882 [2023-11-30 05:36:39,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2023-11-30 05:36:39,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2023-11-30 05:36:39,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:36:39,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2023-11-30 05:36:39,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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 05:36:39,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 05:36:39,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 05:36:39,527 INFO L307 CegarLoopForPetriNet]: 236 programPoint places, 0 predicate places. [2023-11-30 05:36:39,527 INFO L500 AbstractCegarLoop]: Abstraction has has 236 places, 212 transitions, 607 flow [2023-11-30 05:36:39,527 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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 05:36:39,527 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:36:39,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:36:39,528 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:36:39,528 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-30 05:36:39,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:36:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash 619099754, now seen corresponding path program 1 times [2023-11-30 05:36:39,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:36:39,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310559546] [2023-11-30 05:36:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:36:39,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:36:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:36:40,084 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 05:36:40,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:36:40,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310559546] [2023-11-30 05:36:40,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310559546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:36:40,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:36:40,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 05:36:40,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576241468] [2023-11-30 05:36:40,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:36:40,086 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 05:36:40,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:36:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 05:36:40,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-30 05:36:40,101 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 255 [2023-11-30 05:36:40,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 212 transitions, 607 flow. Second operand has 5 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 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 05:36:40,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:36:40,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 255 [2023-11-30 05:36:40,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand