/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:20:19,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:20:19,657 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:20:19,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:20:19,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:20:19,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:20:19,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:20:19,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:20:19,684 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:20:19,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:20:19,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:20:19,688 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:20:19,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:20:19,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:20:19,689 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:20:19,689 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:20:19,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:20:19,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:20:19,690 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:20:19,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:20:19,690 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:20:19,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:20:19,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:20:19,691 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:20:19,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:20:19,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:20:19,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:20:19,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:20:19,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:20:19,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:20:19,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:20:19,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:20:19,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:20:19,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:20:19,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:20:19,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:20:19,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:20:19,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:20:19,901 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:20:19,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c [2023-12-05 21:20:20,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:20:21,181 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:20:21,182 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-8.wvr.c [2023-12-05 21:20:21,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c96b52376/26dfec1c0e2142dca714c85d4f50699f/FLAGdba32f80e [2023-12-05 21:20:21,206 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c96b52376/26dfec1c0e2142dca714c85d4f50699f [2023-12-05 21:20:21,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:20:21,209 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:20:21,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:20:21,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:20:21,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:20:21,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191bb6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21, skipping insertion in model container [2023-12-05 21:20:21,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:20:21,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:20:21,379 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:20:21,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:20:21,419 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:20:21,419 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:20:21,424 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:20:21,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21 WrapperNode [2023-12-05 21:20:21,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:20:21,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:20:21,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:20:21,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:20:21,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,438 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,465 INFO L138 Inliner]: procedures = 27, calls = 131, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 379 [2023-12-05 21:20:21,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:20:21,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:20:21,466 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:20:21,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:20:21,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:20:21,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:20:21,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:20:21,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:20:21,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (1/1) ... [2023-12-05 21:20:21,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:20:21,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:20:21,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:20:21,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:20:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:20:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:20:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:20:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:20:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-05 21:20:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-05 21:20:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-05 21:20:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-05 21:20:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-05 21:20:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-05 21:20:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-05 21:20:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-05 21:20:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:20:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-12-05 21:20:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-12-05 21:20:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-12-05 21:20:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-12-05 21:20:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-12-05 21:20:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-12-05 21:20:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2023-12-05 21:20:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2023-12-05 21:20:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:20:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:20:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:20:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:20:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:20:21,564 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:20:21,656 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:20:21,658 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:20:21,989 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:20:22,067 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:20:22,068 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:20:22,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:20:22 BoogieIcfgContainer [2023-12-05 21:20:22,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:20:22,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:20:22,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:20:22,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:20:22,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:20:21" (1/3) ... [2023-12-05 21:20:22,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34707892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:20:22, skipping insertion in model container [2023-12-05 21:20:22,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:20:21" (2/3) ... [2023-12-05 21:20:22,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34707892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:20:22, skipping insertion in model container [2023-12-05 21:20:22,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:20:22" (3/3) ... [2023-12-05 21:20:22,074 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-8.wvr.c [2023-12-05 21:20:22,088 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:20:22,088 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-12-05 21:20:22,088 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:20:22,198 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-12-05 21:20:22,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 284 transitions, 624 flow [2023-12-05 21:20:22,336 INFO L124 PetriNetUnfolderBase]: 2/276 cut-off events. [2023-12-05 21:20:22,336 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-12-05 21:20:22,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 276 events. 2/276 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 244 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 208. Up to 2 conditions per place. [2023-12-05 21:20:22,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 284 transitions, 624 flow [2023-12-05 21:20:22,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 241 transitions, 527 flow [2023-12-05 21:20:22,363 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:20:22,369 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;@7946c578, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:20:22,369 INFO L363 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-12-05 21:20:22,384 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:20:22,384 INFO L124 PetriNetUnfolderBase]: 1/86 cut-off events. [2023-12-05 21:20:22,384 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:20:22,384 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:20:22,385 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:20:22,385 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-12-05 21:20:22,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:20:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash -868146133, now seen corresponding path program 1 times [2023-12-05 21:20:22,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:20:22,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098188947] [2023-12-05 21:20:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:20:22,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:20:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:20:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:20:23,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:20:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098188947] [2023-12-05 21:20:23,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098188947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:20:23,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:20:23,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:20:23,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787784677] [2023-12-05 21:20:23,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:20:23,196 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:20:23,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:20:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:20:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:20:23,222 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 284 [2023-12-05 21:20:23,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 241 transitions, 527 flow. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:20:23,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:20:23,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 284 [2023-12-05 21:20:23,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand