/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 -i ../../../trunk/examples/svcomp/pthread-ext/08_rand_cas.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:15:29,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:15:29,255 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 [2023-11-29 19:15:29,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:15:29,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:15:29,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:15:29,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:15:29,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:15:29,271 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:15:29,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:15:29,272 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:15:29,272 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:15:29,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:15:29,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:15:29,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:15:29,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:15:29,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:15:29,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:15:29,273 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:15:29,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:15:29,274 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:15:29,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:15:29,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:15:29,274 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:15:29,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:15:29,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:15:29,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:15:29,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:15:29,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:15:29,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:15:29,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:15:29,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:15:29,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:15:29,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:15:29,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:15:29,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:15:29,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:15:29,424 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:15:29,424 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:15:29,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/08_rand_cas.i [2023-11-29 19:15:30,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:15:30,575 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:15:30,576 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i [2023-11-29 19:15:30,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e0899541/58468902855541fca94de9b3f9578cb2/FLAGc0b58510a [2023-11-29 19:15:30,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e0899541/58468902855541fca94de9b3f9578cb2 [2023-11-29 19:15:30,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:15:30,603 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:15:30,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:15:30,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:15:30,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:15:30,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:15:30" (1/1) ... [2023-11-29 19:15:30,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413219d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:30, skipping insertion in model container [2023-11-29 19:15:30,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:15:30" (1/1) ... [2023-11-29 19:15:30,653 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:15:30,904 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30837,30850] [2023-11-29 19:15:30,912 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31185,31198] [2023-11-29 19:15:30,914 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31448,31461] [2023-11-29 19:15:30,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:15:30,942 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:15:30,973 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[30837,30850] [2023-11-29 19:15:30,975 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31185,31198] [2023-11-29 19:15:30,976 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/08_rand_cas.i[31448,31461] [2023-11-29 19:15:30,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:15:31,000 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:15:31,000 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:15:31,006 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:15:31,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31 WrapperNode [2023-11-29 19:15:31,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:15:31,008 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:15:31,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:15:31,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:15:31,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,024 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,044 INFO L138 Inliner]: procedures = 178, calls = 38, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 146 [2023-11-29 19:15:31,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:15:31,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:15:31,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:15:31,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:15:31,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,073 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:15:31,073 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:15:31,073 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:15:31,073 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:15:31,074 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (1/1) ... [2023-11-29 19:15:31,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:15:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:15:31,104 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) [2023-11-29 19:15:31,127 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 [2023-11-29 19:15:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 19:15:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 19:15:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 19:15:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:15:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 19:15:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:15:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:15:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:15:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:15:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 19:15:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:15:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:15:31,144 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:15:31,233 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:15:31,235 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:15:31,435 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:15:31,514 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:15:31,514 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 19:15:31,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:15:31 BoogieIcfgContainer [2023-11-29 19:15:31,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:15:31,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:15:31,517 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:15:31,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:15:31,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:15:30" (1/3) ... [2023-11-29 19:15:31,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f07ec93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:15:31, skipping insertion in model container [2023-11-29 19:15:31,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:15:31" (2/3) ... [2023-11-29 19:15:31,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f07ec93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:15:31, skipping insertion in model container [2023-11-29 19:15:31,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:15:31" (3/3) ... [2023-11-29 19:15:31,520 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2023-11-29 19:15:31,532 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:15:31,532 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-29 19:15:31,533 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:15:31,584 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:15:31,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 121 transitions, 246 flow [2023-11-29 19:15:31,639 INFO L124 PetriNetUnfolderBase]: 14/132 cut-off events. [2023-11-29 19:15:31,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:15:31,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 132 events. 14/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 209 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 105. Up to 4 conditions per place. [2023-11-29 19:15:31,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 121 transitions, 246 flow [2023-11-29 19:15:31,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 121 transitions, 246 flow [2023-11-29 19:15:31,661 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:15:31,666 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;@79c2663a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:15:31,666 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 19:15:31,674 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:15:31,674 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-29 19:15:31,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:15:31,674 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:15:31,675 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:15:31,675 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 19:15:31,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:15:31,679 INFO L85 PathProgramCache]: Analyzing trace with hash -620760633, now seen corresponding path program 1 times [2023-11-29 19:15:31,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:15:31,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559734917] [2023-11-29 19:15:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:15:31,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:15:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:15:31,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:15:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:15:31,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:15:31,824 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:15:31,827 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-29 19:15:31,828 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-29 19:15:31,828 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-29 19:15:31,828 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-29 19:15:31,829 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-29 19:15:31,829 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-29 19:15:31,829 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-29 19:15:31,829 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:15:31,830 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 19:15:31,831 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:15:31,832 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 19:15:31,865 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:15:31,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 214 transitions, 438 flow [2023-11-29 19:15:31,917 INFO L124 PetriNetUnfolderBase]: 27/238 cut-off events. [2023-11-29 19:15:31,917 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 19:15:31,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 238 events. 27/238 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 696 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 197. Up to 6 conditions per place. [2023-11-29 19:15:31,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 214 transitions, 438 flow [2023-11-29 19:15:31,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 214 transitions, 438 flow [2023-11-29 19:15:31,933 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:15:31,934 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;@79c2663a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:15:31,934 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-29 19:15:31,950 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:15:31,950 INFO L124 PetriNetUnfolderBase]: 5/95 cut-off events. [2023-11-29 19:15:31,950 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 19:15:31,950 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:15:31,950 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:15:31,950 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-29 19:15:31,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:15:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2109664712, now seen corresponding path program 1 times [2023-11-29 19:15:31,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:15:31,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576062127] [2023-11-29 19:15:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:15:31,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:15:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:15:31,970 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:15:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:15:31,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:15:31,991 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:15:31,991 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-29 19:15:31,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2023-11-29 19:15:31,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2023-11-29 19:15:31,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2023-11-29 19:15:31,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2023-11-29 19:15:31,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2023-11-29 19:15:31,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2023-11-29 19:15:31,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2023-11-29 19:15:31,993 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2023-11-29 19:15:31,993 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2023-11-29 19:15:31,993 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:15:31,993 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 19:15:31,994 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:15:31,994 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 19:15:32,073 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:15:32,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 307 transitions, 632 flow [2023-11-29 19:15:32,145 INFO L124 PetriNetUnfolderBase]: 40/344 cut-off events. [2023-11-29 19:15:32,146 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 19:15:32,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 344 events. 40/344 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1253 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 289. Up to 8 conditions per place. [2023-11-29 19:15:32,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 307 transitions, 632 flow [2023-11-29 19:15:32,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 307 transitions, 632 flow [2023-11-29 19:15:32,156 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:15:32,158 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;@79c2663a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:15:32,158 INFO L363 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-29 19:15:32,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:15:32,168 INFO L124 PetriNetUnfolderBase]: 8/123 cut-off events. [2023-11-29 19:15:32,168 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 19:15:32,168 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:15:32,168 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] [2023-11-29 19:15:32,168 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-29 19:15:32,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:15:32,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1359307451, now seen corresponding path program 1 times [2023-11-29 19:15:32,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:15:32,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745641537] [2023-11-29 19:15:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:15:32,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:15:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:15:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:15:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:15:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745641537] [2023-11-29 19:15:32,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745641537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:15:32,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:15:32,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:15:32,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316787348] [2023-11-29 19:15:32,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:15:32,438 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:15:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:15:32,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:15:32,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:15:32,466 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 307 [2023-11-29 19:15:32,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 307 transitions, 632 flow. Second operand has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 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) [2023-11-29 19:15:32,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:15:32,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 307 [2023-11-29 19:15:32,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:15:36,605 INFO L124 PetriNetUnfolderBase]: 11595/39425 cut-off events. [2023-11-29 19:15:36,605 INFO L125 PetriNetUnfolderBase]: For 1632/1632 co-relation queries the response was YES. [2023-11-29 19:15:36,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55879 conditions, 39425 events. 11595/39425 cut-off events. For 1632/1632 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 500749 event pairs, 3713 based on Foata normal form. 9088/44973 useless extension candidates. Maximal degree in co-relation 4948. Up to 7426 conditions per place. [2023-11-29 19:15:36,979 INFO L140 encePairwiseOnDemand]: 267/307 looper letters, 151 selfloop transitions, 31 changer transitions 0/405 dead transitions. [2023-11-29 19:15:36,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 405 transitions, 1276 flow [2023-11-29 19:15:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:15:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:15:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2408 transitions. [2023-11-29 19:15:36,997 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8715164676076729 [2023-11-29 19:15:37,000 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2408 transitions. [2023-11-29 19:15:37,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2408 transitions. [2023-11-29 19:15:37,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:15:37,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2408 transitions. [2023-11-29 19:15:37,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 267.55555555555554) internal successors, (2408), 9 states have internal predecessors, (2408), 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) [2023-11-29 19:15:37,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 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) [2023-11-29 19:15:37,025 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 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) [2023-11-29 19:15:37,029 INFO L307 CegarLoopForPetriNet]: 277 programPoint places, -10 predicate places. [2023-11-29 19:15:37,030 INFO L500 AbstractCegarLoop]: Abstraction has has 267 places, 405 transitions, 1276 flow [2023-11-29 19:15:37,030 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 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) [2023-11-29 19:15:37,031 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:15:37,031 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:15:37,031 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 19:15:37,031 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-29 19:15:37,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:15:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash 871858246, now seen corresponding path program 1 times [2023-11-29 19:15:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:15:37,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708742352] [2023-11-29 19:15:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:15:37,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:15:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:15:37,054 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:15:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:15:37,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:15:37,071 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:15:37,071 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-29 19:15:37,071 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2023-11-29 19:15:37,071 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2023-11-29 19:15:37,071 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2023-11-29 19:15:37,071 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2023-11-29 19:15:37,071 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2023-11-29 19:15:37,071 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2023-11-29 19:15:37,072 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2023-11-29 19:15:37,072 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2023-11-29 19:15:37,072 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2023-11-29 19:15:37,072 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2023-11-29 19:15:37,072 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2023-11-29 19:15:37,072 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2023-11-29 19:15:37,076 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:15:37,076 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 19:15:37,077 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:15:37,077 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 19:15:37,132 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:15:37,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 400 transitions, 828 flow [2023-11-29 19:15:37,278 INFO L124 PetriNetUnfolderBase]: 53/450 cut-off events. [2023-11-29 19:15:37,278 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 19:15:37,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 450 events. 53/450 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1870 event pairs, 0 based on Foata normal form. 0/380 useless extension candidates. Maximal degree in co-relation 381. Up to 10 conditions per place. [2023-11-29 19:15:37,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 400 transitions, 828 flow [2023-11-29 19:15:37,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 360 places, 400 transitions, 828 flow [2023-11-29 19:15:37,293 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:15:37,294 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;@79c2663a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:15:37,294 INFO L363 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-29 19:15:37,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:15:37,299 INFO L124 PetriNetUnfolderBase]: 8/118 cut-off events. [2023-11-29 19:15:37,299 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 19:15:37,299 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:15:37,299 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] [2023-11-29 19:15:37,299 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 19:15:37,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:15:37,299 INFO L85 PathProgramCache]: Analyzing trace with hash -411137851, now seen corresponding path program 1 times [2023-11-29 19:15:37,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:15:37,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885535755] [2023-11-29 19:15:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:15:37,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:15:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:15:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:15:37,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:15:37,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885535755] [2023-11-29 19:15:37,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885535755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:15:37,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:15:37,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:15:37,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266604065] [2023-11-29 19:15:37,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:15:37,427 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:15:37,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:15:37,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:15:37,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:15:37,429 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 400 [2023-11-29 19:15:37,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 400 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 305.8333333333333) internal successors, (1835), 6 states have internal predecessors, (1835), 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) [2023-11-29 19:15:37,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:15:37,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 400 [2023-11-29 19:15:37,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:16:27,143 INFO L124 PetriNetUnfolderBase]: 145443/435506 cut-off events. [2023-11-29 19:16:27,147 INFO L125 PetriNetUnfolderBase]: For 24846/24846 co-relation queries the response was YES. [2023-11-29 19:16:32,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627178 conditions, 435506 events. 145443/435506 cut-off events. For 24846/24846 co-relation queries the response was YES. Maximal size of possible extension queue 8941. Compared 7162027 event pairs, 48735 based on Foata normal form. 111950/510857 useless extension candidates. Maximal degree in co-relation 55790. Up to 85961 conditions per place. [2023-11-29 19:16:34,955 INFO L140 encePairwiseOnDemand]: 350/400 looper letters, 215 selfloop transitions, 39 changer transitions 0/549 dead transitions. [2023-11-29 19:16:34,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 549 transitions, 1781 flow [2023-11-29 19:16:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:16:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:16:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3201 transitions. [2023-11-29 19:16:34,960 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8891666666666667 [2023-11-29 19:16:34,960 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3201 transitions. [2023-11-29 19:16:34,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3201 transitions. [2023-11-29 19:16:34,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:16:34,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3201 transitions. [2023-11-29 19:16:34,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 355.6666666666667) internal successors, (3201), 9 states have internal predecessors, (3201), 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) [2023-11-29 19:16:34,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 400.0) internal successors, (4000), 10 states have internal predecessors, (4000), 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) [2023-11-29 19:16:34,972 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 400.0) internal successors, (4000), 10 states have internal predecessors, (4000), 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) [2023-11-29 19:16:34,973 INFO L307 CegarLoopForPetriNet]: 360 programPoint places, -14 predicate places. [2023-11-29 19:16:34,973 INFO L500 AbstractCegarLoop]: Abstraction has has 346 places, 549 transitions, 1781 flow [2023-11-29 19:16:34,974 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.8333333333333) internal successors, (1835), 6 states have internal predecessors, (1835), 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) [2023-11-29 19:16:34,974 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:16:34,974 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:16:34,974 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 19:16:34,975 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 19:16:34,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:16:34,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2110258607, now seen corresponding path program 1 times [2023-11-29 19:16:34,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:16:34,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042849815] [2023-11-29 19:16:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:16:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:16:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:16:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 19:16:35,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:16:35,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042849815] [2023-11-29 19:16:35,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042849815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:16:35,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:16:35,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 19:16:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831993436] [2023-11-29 19:16:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:16:35,164 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 19:16:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:16:35,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 19:16:35,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 19:16:35,166 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 400 [2023-11-29 19:16:35,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 549 transitions, 1781 flow. Second operand has 10 states, 10 states have (on average 288.4) internal successors, (2884), 10 states have internal predecessors, (2884), 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) [2023-11-29 19:16:35,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:16:35,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 400 [2023-11-29 19:16:35,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand