/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/weaver/parallel-parallel-sum-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 21:45:15,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 21:45:15,352 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 21:45:15,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 21:45:15,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 21:45:15,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 21:45:15,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 21:45:15,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 21:45:15,387 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 21:45:15,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 21:45:15,391 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 21:45:15,391 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 21:45:15,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 21:45:15,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 21:45:15,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 21:45:15,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 21:45:15,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 21:45:15,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 21:45:15,394 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 21:45:15,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 21:45:15,394 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 21:45:15,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 21:45:15,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 21:45:15,395 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 21:45:15,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 21:45:15,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:45:15,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 21:45:15,397 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 21:45:15,397 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 21:45:15,397 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 21:45:15,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 21:45:15,398 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 21:45:15,398 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 21:45:15,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 21:45:15,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 21:45:15,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 21:45:15,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 21:45:15,647 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 21:45:15,647 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 21:45:15,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-11-29 21:45:16,751 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 21:45:16,938 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 21:45:16,938 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-11-29 21:45:16,945 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a3c76a03/daac7d0a4b9b4375b38600a64b1a5baf/FLAG41fe2e5a2 [2023-11-29 21:45:16,956 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a3c76a03/daac7d0a4b9b4375b38600a64b1a5baf [2023-11-29 21:45:16,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 21:45:16,959 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 21:45:16,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 21:45:16,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 21:45:16,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 21:45:16,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:45:16" (1/1) ... [2023-11-29 21:45:16,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b97d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:16, skipping insertion in model container [2023-11-29 21:45:16,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:45:16" (1/1) ... [2023-11-29 21:45:16,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 21:45:17,123 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2023-11-29 21:45:17,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:45:17,140 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 21:45:17,162 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2023-11-29 21:45:17,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:45:17,175 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 21:45:17,176 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 21:45:17,182 INFO L206 MainTranslator]: Completed translation [2023-11-29 21:45:17,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17 WrapperNode [2023-11-29 21:45:17,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 21:45:17,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 21:45:17,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 21:45:17,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 21:45:17,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,236 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 260 [2023-11-29 21:45:17,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 21:45:17,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 21:45:17,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 21:45:17,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 21:45:17,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 21:45:17,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 21:45:17,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 21:45:17,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 21:45:17,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (1/1) ... [2023-11-29 21:45:17,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:45:17,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:45:17,333 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 21:45:17,360 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 21:45:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 21:45:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 21:45:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 21:45:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 21:45:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 21:45:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 21:45:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 21:45:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 21:45:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 21:45:17,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 21:45:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 21:45:17,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 21:45:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 21:45:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 21:45:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 21:45:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 21:45:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 21:45:17,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 21:45:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 21:45:17,373 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 21:45:17,492 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 21:45:17,494 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 21:45:17,924 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 21:45:18,123 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 21:45:18,124 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 21:45:18,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:45:18 BoogieIcfgContainer [2023-11-29 21:45:18,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 21:45:18,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 21:45:18,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 21:45:18,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 21:45:18,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:45:16" (1/3) ... [2023-11-29 21:45:18,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4935f1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:45:18, skipping insertion in model container [2023-11-29 21:45:18,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:45:17" (2/3) ... [2023-11-29 21:45:18,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4935f1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:45:18, skipping insertion in model container [2023-11-29 21:45:18,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:45:18" (3/3) ... [2023-11-29 21:45:18,133 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-11-29 21:45:18,147 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 21:45:18,148 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 21:45:18,149 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 21:45:18,242 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-11-29 21:45:18,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 218 transitions, 476 flow [2023-11-29 21:45:18,382 INFO L124 PetriNetUnfolderBase]: 14/203 cut-off events. [2023-11-29 21:45:18,382 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 21:45:18,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 203 events. 14/203 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 180 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 173. Up to 3 conditions per place. [2023-11-29 21:45:18,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 218 transitions, 476 flow [2023-11-29 21:45:18,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 194 transitions, 418 flow [2023-11-29 21:45:18,415 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 21:45:18,420 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;@e1cbf9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 21:45:18,420 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-29 21:45:18,459 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 21:45:18,459 INFO L124 PetriNetUnfolderBase]: 14/193 cut-off events. [2023-11-29 21:45:18,459 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 21:45:18,459 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:18,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:18,461 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:18,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1089617419, now seen corresponding path program 1 times [2023-11-29 21:45:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:18,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027236646] [2023-11-29 21:45:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:18,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:18,824 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 21:45:18,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:18,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027236646] [2023-11-29 21:45:18,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027236646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:45:18,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:45:18,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 21:45:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793310446] [2023-11-29 21:45:18,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:45:18,835 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 21:45:18,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 21:45:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 21:45:18,872 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 220 [2023-11-29 21:45:18,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 194 transitions, 418 flow. Second operand has 2 states, 2 states have (on average 194.0) internal successors, (388), 2 states have internal predecessors, (388), 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 21:45:18,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:18,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 220 [2023-11-29 21:45:18,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:19,175 INFO L124 PetriNetUnfolderBase]: 301/970 cut-off events. [2023-11-29 21:45:19,175 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-29 21:45:19,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 970 events. 301/970 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5101 event pairs, 159 based on Foata normal form. 116/994 useless extension candidates. Maximal degree in co-relation 1404. Up to 431 conditions per place. [2023-11-29 21:45:19,189 INFO L140 encePairwiseOnDemand]: 212/220 looper letters, 21 selfloop transitions, 0 changer transitions 4/186 dead transitions. [2023-11-29 21:45:19,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 186 transitions, 444 flow [2023-11-29 21:45:19,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 21:45:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-29 21:45:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 401 transitions. [2023-11-29 21:45:19,207 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9113636363636364 [2023-11-29 21:45:19,208 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 401 transitions. [2023-11-29 21:45:19,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 401 transitions. [2023-11-29 21:45:19,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:19,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 401 transitions. [2023-11-29 21:45:19,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 200.5) internal successors, (401), 2 states have internal predecessors, (401), 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 21:45:19,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 21:45:19,223 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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 21:45:19,226 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 1 predicate places. [2023-11-29 21:45:19,227 INFO L500 AbstractCegarLoop]: Abstraction has has 194 places, 186 transitions, 444 flow [2023-11-29 21:45:19,227 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 194.0) internal successors, (388), 2 states have internal predecessors, (388), 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 21:45:19,228 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:19,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:19,228 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 21:45:19,229 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:19,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:19,229 INFO L85 PathProgramCache]: Analyzing trace with hash 13737403, now seen corresponding path program 1 times [2023-11-29 21:45:19,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:19,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240960349] [2023-11-29 21:45:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:19,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:19,655 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 21:45:19,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:19,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240960349] [2023-11-29 21:45:19,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240960349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:45:19,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:45:19,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 21:45:19,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245307750] [2023-11-29 21:45:19,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:45:19,658 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 21:45:19,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:19,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 21:45:19,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 21:45:19,662 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 220 [2023-11-29 21:45:19,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 186 transitions, 444 flow. Second operand has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 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 21:45:19,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:19,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 220 [2023-11-29 21:45:19,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:20,246 INFO L124 PetriNetUnfolderBase]: 613/1790 cut-off events. [2023-11-29 21:45:20,247 INFO L125 PetriNetUnfolderBase]: For 676/794 co-relation queries the response was YES. [2023-11-29 21:45:20,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 1790 events. 613/1790 cut-off events. For 676/794 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11694 event pairs, 186 based on Foata normal form. 0/1624 useless extension candidates. Maximal degree in co-relation 3589. Up to 883 conditions per place. [2023-11-29 21:45:20,264 INFO L140 encePairwiseOnDemand]: 206/220 looper letters, 81 selfloop transitions, 8 changer transitions 10/232 dead transitions. [2023-11-29 21:45:20,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 232 transitions, 852 flow [2023-11-29 21:45:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 21:45:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 21:45:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1332 transitions. [2023-11-29 21:45:20,267 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7568181818181818 [2023-11-29 21:45:20,267 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1332 transitions. [2023-11-29 21:45:20,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1332 transitions. [2023-11-29 21:45:20,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:20,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1332 transitions. [2023-11-29 21:45:20,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 166.5) internal successors, (1332), 8 states have internal predecessors, (1332), 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 21:45:20,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 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 21:45:20,277 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 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 21:45:20,279 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 8 predicate places. [2023-11-29 21:45:20,279 INFO L500 AbstractCegarLoop]: Abstraction has has 201 places, 232 transitions, 852 flow [2023-11-29 21:45:20,280 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 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 21:45:20,280 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:20,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:20,280 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 21:45:20,281 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:20,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:20,281 INFO L85 PathProgramCache]: Analyzing trace with hash -552030507, now seen corresponding path program 2 times [2023-11-29 21:45:20,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:20,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747976672] [2023-11-29 21:45:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:20,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:20,544 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 21:45:20,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:20,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747976672] [2023-11-29 21:45:20,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747976672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:45:20,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:45:20,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 21:45:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843820469] [2023-11-29 21:45:20,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:45:20,545 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 21:45:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:20,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 21:45:20,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 21:45:20,547 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 220 [2023-11-29 21:45:20,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 232 transitions, 852 flow. Second operand has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 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 21:45:20,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:20,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 220 [2023-11-29 21:45:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:21,079 INFO L124 PetriNetUnfolderBase]: 879/2395 cut-off events. [2023-11-29 21:45:21,079 INFO L125 PetriNetUnfolderBase]: For 1701/1941 co-relation queries the response was YES. [2023-11-29 21:45:21,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6758 conditions, 2395 events. 879/2395 cut-off events. For 1701/1941 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17056 event pairs, 177 based on Foata normal form. 11/2200 useless extension candidates. Maximal degree in co-relation 6290. Up to 1280 conditions per place. [2023-11-29 21:45:21,100 INFO L140 encePairwiseOnDemand]: 205/220 looper letters, 115 selfloop transitions, 13 changer transitions 16/277 dead transitions. [2023-11-29 21:45:21,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 277 transitions, 1433 flow [2023-11-29 21:45:21,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 21:45:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 21:45:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1332 transitions. [2023-11-29 21:45:21,103 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7568181818181818 [2023-11-29 21:45:21,103 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1332 transitions. [2023-11-29 21:45:21,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1332 transitions. [2023-11-29 21:45:21,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:21,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1332 transitions. [2023-11-29 21:45:21,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 166.5) internal successors, (1332), 8 states have internal predecessors, (1332), 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 21:45:21,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 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 21:45:21,110 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 220.0) internal successors, (1980), 9 states have internal predecessors, (1980), 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 21:45:21,111 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 15 predicate places. [2023-11-29 21:45:21,111 INFO L500 AbstractCegarLoop]: Abstraction has has 208 places, 277 transitions, 1433 flow [2023-11-29 21:45:21,112 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 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 21:45:21,112 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:21,112 INFO L232 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:21,112 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 21:45:21,113 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:21,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash 74147742, now seen corresponding path program 1 times [2023-11-29 21:45:21,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:21,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568167593] [2023-11-29 21:45:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:21,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:21,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568167593] [2023-11-29 21:45:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568167593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:45:21,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:45:21,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 21:45:21,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973901344] [2023-11-29 21:45:21,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:45:21,196 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 21:45:21,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:21,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 21:45:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 21:45:21,197 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 220 [2023-11-29 21:45:21,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 277 transitions, 1433 flow. Second operand has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 21:45:21,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:21,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 220 [2023-11-29 21:45:21,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:21,543 INFO L124 PetriNetUnfolderBase]: 798/2333 cut-off events. [2023-11-29 21:45:21,543 INFO L125 PetriNetUnfolderBase]: For 2494/2712 co-relation queries the response was YES. [2023-11-29 21:45:21,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7658 conditions, 2333 events. 798/2333 cut-off events. For 2494/2712 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16407 event pairs, 74 based on Foata normal form. 81/2255 useless extension candidates. Maximal degree in co-relation 7141. Up to 1199 conditions per place. [2023-11-29 21:45:21,567 INFO L140 encePairwiseOnDemand]: 216/220 looper letters, 128 selfloop transitions, 10 changer transitions 16/321 dead transitions. [2023-11-29 21:45:21,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 321 transitions, 2086 flow [2023-11-29 21:45:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 21:45:21,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 21:45:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2023-11-29 21:45:21,569 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8772727272727273 [2023-11-29 21:45:21,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2023-11-29 21:45:21,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2023-11-29 21:45:21,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:21,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2023-11-29 21:45:21,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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 21:45:21,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 21:45:21,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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 21:45:21,573 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 17 predicate places. [2023-11-29 21:45:21,573 INFO L500 AbstractCegarLoop]: Abstraction has has 210 places, 321 transitions, 2086 flow [2023-11-29 21:45:21,574 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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 21:45:21,574 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:21,574 INFO L232 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:21,574 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 21:45:21,574 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:21,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1452489659, now seen corresponding path program 1 times [2023-11-29 21:45:21,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:21,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946323152] [2023-11-29 21:45:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:21,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:21,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:21,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946323152] [2023-11-29 21:45:21,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946323152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:45:21,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:45:21,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 21:45:21,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121200167] [2023-11-29 21:45:21,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:45:21,760 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 21:45:21,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:21,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 21:45:21,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 21:45:21,763 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 220 [2023-11-29 21:45:21,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 321 transitions, 2086 flow. Second operand has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 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 21:45:21,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:21,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 220 [2023-11-29 21:45:21,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:22,356 INFO L124 PetriNetUnfolderBase]: 982/3086 cut-off events. [2023-11-29 21:45:22,356 INFO L125 PetriNetUnfolderBase]: For 5031/5367 co-relation queries the response was YES. [2023-11-29 21:45:22,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11412 conditions, 3086 events. 982/3086 cut-off events. For 5031/5367 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 23582 event pairs, 93 based on Foata normal form. 35/2911 useless extension candidates. Maximal degree in co-relation 8299. Up to 1514 conditions per place. [2023-11-29 21:45:22,388 INFO L140 encePairwiseOnDemand]: 209/220 looper letters, 213 selfloop transitions, 12 changer transitions 23/401 dead transitions. [2023-11-29 21:45:22,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 401 transitions, 3383 flow [2023-11-29 21:45:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 21:45:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 21:45:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1733 transitions. [2023-11-29 21:45:22,392 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7877272727272727 [2023-11-29 21:45:22,393 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1733 transitions. [2023-11-29 21:45:22,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1733 transitions. [2023-11-29 21:45:22,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:22,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1733 transitions. [2023-11-29 21:45:22,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.3) internal successors, (1733), 10 states have internal predecessors, (1733), 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 21:45:22,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 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 21:45:22,400 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 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 21:45:22,401 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 26 predicate places. [2023-11-29 21:45:22,401 INFO L500 AbstractCegarLoop]: Abstraction has has 219 places, 401 transitions, 3383 flow [2023-11-29 21:45:22,401 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 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 21:45:22,402 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:22,402 INFO L232 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:22,402 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 21:45:22,402 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:22,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:22,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1912996576, now seen corresponding path program 1 times [2023-11-29 21:45:22,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:22,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808016004] [2023-11-29 21:45:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:22,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:22,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808016004] [2023-11-29 21:45:22,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808016004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:45:22,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:45:22,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 21:45:22,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316796442] [2023-11-29 21:45:22,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:45:22,570 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 21:45:22,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:22,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 21:45:22,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 21:45:22,572 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 220 [2023-11-29 21:45:22,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 401 transitions, 3383 flow. Second operand has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 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 21:45:22,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:22,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 220 [2023-11-29 21:45:22,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:23,207 INFO L124 PetriNetUnfolderBase]: 875/2765 cut-off events. [2023-11-29 21:45:23,208 INFO L125 PetriNetUnfolderBase]: For 6362/6852 co-relation queries the response was YES. [2023-11-29 21:45:23,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11551 conditions, 2765 events. 875/2765 cut-off events. For 6362/6852 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 20407 event pairs, 80 based on Foata normal form. 31/2606 useless extension candidates. Maximal degree in co-relation 9457. Up to 1347 conditions per place. [2023-11-29 21:45:23,238 INFO L140 encePairwiseOnDemand]: 210/220 looper letters, 150 selfloop transitions, 6 changer transitions 72/381 dead transitions. [2023-11-29 21:45:23,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 381 transitions, 3568 flow [2023-11-29 21:45:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 21:45:23,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 21:45:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1735 transitions. [2023-11-29 21:45:23,242 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7886363636363637 [2023-11-29 21:45:23,242 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1735 transitions. [2023-11-29 21:45:23,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1735 transitions. [2023-11-29 21:45:23,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:23,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1735 transitions. [2023-11-29 21:45:23,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.5) internal successors, (1735), 10 states have internal predecessors, (1735), 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 21:45:23,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 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 21:45:23,251 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 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 21:45:23,251 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 35 predicate places. [2023-11-29 21:45:23,252 INFO L500 AbstractCegarLoop]: Abstraction has has 228 places, 381 transitions, 3568 flow [2023-11-29 21:45:23,252 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 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 21:45:23,252 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:23,252 INFO L232 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:23,253 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 21:45:23,253 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:23,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:23,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2037515701, now seen corresponding path program 1 times [2023-11-29 21:45:23,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:23,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804683494] [2023-11-29 21:45:23,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:23,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:23,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:23,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804683494] [2023-11-29 21:45:23,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804683494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:45:23,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516097428] [2023-11-29 21:45:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:23,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:23,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:45:23,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:45:23,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 21:45:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:23,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 21:45:23,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:45:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:23,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:45:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:24,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516097428] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:45:24,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:45:24,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-29 21:45:24,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627490554] [2023-11-29 21:45:24,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:45:24,129 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 21:45:24,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:24,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 21:45:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-29 21:45:24,134 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 220 [2023-11-29 21:45:24,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 381 transitions, 3568 flow. Second operand has 19 states, 19 states have (on average 168.1578947368421) internal successors, (3195), 19 states have internal predecessors, (3195), 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 21:45:24,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:24,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 220 [2023-11-29 21:45:24,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:25,203 INFO L124 PetriNetUnfolderBase]: 1229/3942 cut-off events. [2023-11-29 21:45:25,203 INFO L125 PetriNetUnfolderBase]: For 12669/13845 co-relation queries the response was YES. [2023-11-29 21:45:25,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18355 conditions, 3942 events. 1229/3942 cut-off events. For 12669/13845 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 32153 event pairs, 88 based on Foata normal form. 93/3756 useless extension candidates. Maximal degree in co-relation 10602. Up to 1910 conditions per place. [2023-11-29 21:45:25,243 INFO L140 encePairwiseOnDemand]: 203/220 looper letters, 300 selfloop transitions, 32 changer transitions 104/588 dead transitions. [2023-11-29 21:45:25,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 588 transitions, 7486 flow [2023-11-29 21:45:25,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 21:45:25,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 21:45:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2745 transitions. [2023-11-29 21:45:25,249 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7798295454545454 [2023-11-29 21:45:25,249 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2745 transitions. [2023-11-29 21:45:25,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2745 transitions. [2023-11-29 21:45:25,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:25,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2745 transitions. [2023-11-29 21:45:25,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5625) internal successors, (2745), 16 states have internal predecessors, (2745), 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 21:45:25,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 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 21:45:25,262 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 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 21:45:25,262 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 50 predicate places. [2023-11-29 21:45:25,262 INFO L500 AbstractCegarLoop]: Abstraction has has 243 places, 588 transitions, 7486 flow [2023-11-29 21:45:25,264 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 168.1578947368421) internal successors, (3195), 19 states have internal predecessors, (3195), 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 21:45:25,264 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:25,264 INFO L232 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:25,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 21:45:25,470 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:25,471 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:25,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1342771005, now seen corresponding path program 1 times [2023-11-29 21:45:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:25,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107035629] [2023-11-29 21:45:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:25,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:25,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:25,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107035629] [2023-11-29 21:45:25,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107035629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:45:25,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559039987] [2023-11-29 21:45:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:25,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:25,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:45:25,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:45:25,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 21:45:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:25,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 21:45:25,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:45:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:25,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:45:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:26,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559039987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:45:26,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:45:26,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-29 21:45:26,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318421761] [2023-11-29 21:45:26,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:45:26,172 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 21:45:26,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:26,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 21:45:26,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-29 21:45:26,175 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 220 [2023-11-29 21:45:26,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 588 transitions, 7486 flow. Second operand has 19 states, 19 states have (on average 168.47368421052633) internal successors, (3201), 19 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 21:45:26,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:26,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 220 [2023-11-29 21:45:26,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:27,069 INFO L124 PetriNetUnfolderBase]: 952/3173 cut-off events. [2023-11-29 21:45:27,069 INFO L125 PetriNetUnfolderBase]: For 12413/13157 co-relation queries the response was YES. [2023-11-29 21:45:27,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16048 conditions, 3173 events. 952/3173 cut-off events. For 12413/13157 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 24420 event pairs, 74 based on Foata normal form. 22/2979 useless extension candidates. Maximal degree in co-relation 11770. Up to 1495 conditions per place. [2023-11-29 21:45:27,095 INFO L140 encePairwiseOnDemand]: 201/220 looper letters, 206 selfloop transitions, 34 changer transitions 140/532 dead transitions. [2023-11-29 21:45:27,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 532 transitions, 7274 flow [2023-11-29 21:45:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 21:45:27,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 21:45:27,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2727 transitions. [2023-11-29 21:45:27,100 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.774715909090909 [2023-11-29 21:45:27,101 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2727 transitions. [2023-11-29 21:45:27,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2727 transitions. [2023-11-29 21:45:27,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:27,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2727 transitions. [2023-11-29 21:45:27,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 170.4375) internal successors, (2727), 16 states have internal predecessors, (2727), 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 21:45:27,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 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 21:45:27,112 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 220.0) internal successors, (3740), 17 states have internal predecessors, (3740), 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 21:45:27,112 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 65 predicate places. [2023-11-29 21:45:27,113 INFO L500 AbstractCegarLoop]: Abstraction has has 258 places, 532 transitions, 7274 flow [2023-11-29 21:45:27,114 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 168.47368421052633) internal successors, (3201), 19 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 21:45:27,114 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:27,114 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:27,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 21:45:27,320 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 21:45:27,321 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:27,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1225020091, now seen corresponding path program 1 times [2023-11-29 21:45:27,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:27,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140066572] [2023-11-29 21:45:27,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:27,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:27,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:27,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140066572] [2023-11-29 21:45:27,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140066572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:45:27,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883427849] [2023-11-29 21:45:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:27,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:27,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:45:27,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:45:27,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 21:45:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:27,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 21:45:27,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:45:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:27,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:45:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:28,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883427849] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 21:45:28,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 21:45:28,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2023-11-29 21:45:28,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145077021] [2023-11-29 21:45:28,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:45:28,114 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 21:45:28,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:28,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 21:45:28,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-11-29 21:45:28,115 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 220 [2023-11-29 21:45:28,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 532 transitions, 7274 flow. Second operand has 9 states, 9 states have (on average 169.55555555555554) internal successors, (1526), 9 states have internal predecessors, (1526), 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 21:45:28,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:28,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 220 [2023-11-29 21:45:28,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:28,756 INFO L124 PetriNetUnfolderBase]: 799/2674 cut-off events. [2023-11-29 21:45:28,756 INFO L125 PetriNetUnfolderBase]: For 14102/15202 co-relation queries the response was YES. [2023-11-29 21:45:28,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14750 conditions, 2674 events. 799/2674 cut-off events. For 14102/15202 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19366 event pairs, 52 based on Foata normal form. 35/2530 useless extension candidates. Maximal degree in co-relation 10398. Up to 1252 conditions per place. [2023-11-29 21:45:28,880 INFO L140 encePairwiseOnDemand]: 204/220 looper letters, 221 selfloop transitions, 23 changer transitions 125/515 dead transitions. [2023-11-29 21:45:28,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 515 transitions, 7704 flow [2023-11-29 21:45:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 21:45:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 21:45:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1728 transitions. [2023-11-29 21:45:28,884 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7854545454545454 [2023-11-29 21:45:28,885 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1728 transitions. [2023-11-29 21:45:28,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1728 transitions. [2023-11-29 21:45:28,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:28,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1728 transitions. [2023-11-29 21:45:28,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 172.8) internal successors, (1728), 10 states have internal predecessors, (1728), 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 21:45:28,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 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 21:45:28,891 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 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 21:45:28,892 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 74 predicate places. [2023-11-29 21:45:28,892 INFO L500 AbstractCegarLoop]: Abstraction has has 267 places, 515 transitions, 7704 flow [2023-11-29 21:45:28,892 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.55555555555554) internal successors, (1526), 9 states have internal predecessors, (1526), 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 21:45:28,892 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:28,893 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:28,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 21:45:29,098 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:29,099 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:29,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:29,100 INFO L85 PathProgramCache]: Analyzing trace with hash -728842328, now seen corresponding path program 2 times [2023-11-29 21:45:29,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:29,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958841301] [2023-11-29 21:45:29,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:29,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:29,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:29,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958841301] [2023-11-29 21:45:29,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958841301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:45:29,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902168877] [2023-11-29 21:45:29,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:45:29,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:29,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:45:29,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:45:29,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 21:45:29,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:45:29,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:45:29,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 21:45:29,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:45:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:45:29,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 21:45:29,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902168877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:45:29,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 21:45:29,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-11-29 21:45:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939175308] [2023-11-29 21:45:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:45:29,534 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:45:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:29,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:45:29,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-29 21:45:29,536 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 220 [2023-11-29 21:45:29,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 515 transitions, 7704 flow. Second operand has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 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 21:45:29,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:29,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 220 [2023-11-29 21:45:29,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:30,091 INFO L124 PetriNetUnfolderBase]: 866/2868 cut-off events. [2023-11-29 21:45:30,091 INFO L125 PetriNetUnfolderBase]: For 18926/20121 co-relation queries the response was YES. [2023-11-29 21:45:30,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17205 conditions, 2868 events. 866/2868 cut-off events. For 18926/20121 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 21502 event pairs, 29 based on Foata normal form. 65/2715 useless extension candidates. Maximal degree in co-relation 12514. Up to 1350 conditions per place. [2023-11-29 21:45:30,123 INFO L140 encePairwiseOnDemand]: 212/220 looper letters, 236 selfloop transitions, 26 changer transitions 125/555 dead transitions. [2023-11-29 21:45:30,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 555 transitions, 9269 flow [2023-11-29 21:45:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 21:45:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 21:45:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 954 transitions. [2023-11-29 21:45:30,125 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8672727272727273 [2023-11-29 21:45:30,125 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 954 transitions. [2023-11-29 21:45:30,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 954 transitions. [2023-11-29 21:45:30,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:30,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 954 transitions. [2023-11-29 21:45:30,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 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 21:45:30,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 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 21:45:30,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 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 21:45:30,131 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 78 predicate places. [2023-11-29 21:45:30,131 INFO L500 AbstractCegarLoop]: Abstraction has has 271 places, 555 transitions, 9269 flow [2023-11-29 21:45:30,131 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 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 21:45:30,131 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:30,132 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:30,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 21:45:30,338 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:30,338 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:30,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash 775758544, now seen corresponding path program 3 times [2023-11-29 21:45:30,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:30,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230347753] [2023-11-29 21:45:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:30,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:45:30,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:30,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230347753] [2023-11-29 21:45:30,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230347753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:45:30,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955547028] [2023-11-29 21:45:30,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:45:30,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:30,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:45:30,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:45:30,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 21:45:30,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 21:45:30,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:45:30,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 21:45:30,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:45:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:45:30,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 21:45:30,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955547028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:45:30,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 21:45:30,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-29 21:45:30,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853694843] [2023-11-29 21:45:30,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:45:30,784 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:45:30,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:30,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:45:30,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 21:45:30,786 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 220 [2023-11-29 21:45:30,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 555 transitions, 9269 flow. Second operand has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 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 21:45:30,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:30,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 220 [2023-11-29 21:45:30,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:31,516 INFO L124 PetriNetUnfolderBase]: 954/3191 cut-off events. [2023-11-29 21:45:31,516 INFO L125 PetriNetUnfolderBase]: For 24043/25394 co-relation queries the response was YES. [2023-11-29 21:45:31,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20442 conditions, 3191 events. 954/3191 cut-off events. For 24043/25394 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 24771 event pairs, 24 based on Foata normal form. 90/3039 useless extension candidates. Maximal degree in co-relation 15326. Up to 1487 conditions per place. [2023-11-29 21:45:31,558 INFO L140 encePairwiseOnDemand]: 211/220 looper letters, 282 selfloop transitions, 25 changer transitions 152/627 dead transitions. [2023-11-29 21:45:31,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 627 transitions, 11837 flow [2023-11-29 21:45:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 21:45:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 21:45:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 953 transitions. [2023-11-29 21:45:31,561 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8663636363636363 [2023-11-29 21:45:31,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 953 transitions. [2023-11-29 21:45:31,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 953 transitions. [2023-11-29 21:45:31,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:31,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 953 transitions. [2023-11-29 21:45:31,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.6) internal successors, (953), 5 states have internal predecessors, (953), 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 21:45:31,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 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 21:45:31,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 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 21:45:31,566 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 82 predicate places. [2023-11-29 21:45:31,566 INFO L500 AbstractCegarLoop]: Abstraction has has 275 places, 627 transitions, 11837 flow [2023-11-29 21:45:31,566 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 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 21:45:31,567 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:31,567 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:31,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 21:45:31,773 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 21:45:31,773 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:31,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:31,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1827841964, now seen corresponding path program 4 times [2023-11-29 21:45:31,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:31,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794385633] [2023-11-29 21:45:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:31,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:31,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794385633] [2023-11-29 21:45:31,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794385633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:45:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499940817] [2023-11-29 21:45:31,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:45:32,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:32,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:45:32,001 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:45:32,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 21:45:32,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:45:32,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:45:32,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 21:45:32,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:45:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:32,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:45:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:32,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499940817] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 21:45:32,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 21:45:32,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2023-11-29 21:45:32,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791163681] [2023-11-29 21:45:32,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:45:32,486 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 21:45:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 21:45:32,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-11-29 21:45:32,488 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 220 [2023-11-29 21:45:32,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 627 transitions, 11837 flow. Second operand has 9 states, 9 states have (on average 169.55555555555554) internal successors, (1526), 9 states have internal predecessors, (1526), 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 21:45:32,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:32,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 220 [2023-11-29 21:45:32,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:33,222 INFO L124 PetriNetUnfolderBase]: 825/2760 cut-off events. [2023-11-29 21:45:33,223 INFO L125 PetriNetUnfolderBase]: For 24624/25827 co-relation queries the response was YES. [2023-11-29 21:45:33,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19056 conditions, 2760 events. 825/2760 cut-off events. For 24624/25827 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 20568 event pairs, 27 based on Foata normal form. 147/2692 useless extension candidates. Maximal degree in co-relation 13713. Up to 1287 conditions per place. [2023-11-29 21:45:33,258 INFO L140 encePairwiseOnDemand]: 206/220 looper letters, 265 selfloop transitions, 28 changer transitions 148/581 dead transitions. [2023-11-29 21:45:33,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 581 transitions, 11675 flow [2023-11-29 21:45:33,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 21:45:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 21:45:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1734 transitions. [2023-11-29 21:45:33,262 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7881818181818182 [2023-11-29 21:45:33,262 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1734 transitions. [2023-11-29 21:45:33,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1734 transitions. [2023-11-29 21:45:33,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:33,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1734 transitions. [2023-11-29 21:45:33,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.4) internal successors, (1734), 10 states have internal predecessors, (1734), 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 21:45:33,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 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 21:45:33,270 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 220.0) internal successors, (2420), 11 states have internal predecessors, (2420), 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 21:45:33,270 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 91 predicate places. [2023-11-29 21:45:33,270 INFO L500 AbstractCegarLoop]: Abstraction has has 284 places, 581 transitions, 11675 flow [2023-11-29 21:45:33,271 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.55555555555554) internal successors, (1526), 9 states have internal predecessors, (1526), 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 21:45:33,271 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:33,271 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:33,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 21:45:33,487 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:33,488 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:33,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1831528759, now seen corresponding path program 1 times [2023-11-29 21:45:33,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:33,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438538042] [2023-11-29 21:45:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:33,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:45:34,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:34,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438538042] [2023-11-29 21:45:34,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438538042] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:45:34,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230323681] [2023-11-29 21:45:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:34,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:34,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:45:34,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:45:34,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 21:45:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:34,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 21:45:34,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:45:35,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 21:45:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:45:35,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:45:35,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:45:35,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-11-29 21:45:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:45:35,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230323681] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:45:35,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:45:35,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 25 [2023-11-29 21:45:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643277194] [2023-11-29 21:45:35,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:45:35,386 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 21:45:35,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 21:45:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-11-29 21:45:35,390 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 220 [2023-11-29 21:45:35,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 581 transitions, 11675 flow. Second operand has 25 states, 25 states have (on average 118.88) internal successors, (2972), 25 states have internal predecessors, (2972), 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 21:45:35,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:35,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 220 [2023-11-29 21:45:35,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:45:38,505 INFO L124 PetriNetUnfolderBase]: 5144/11797 cut-off events. [2023-11-29 21:45:38,506 INFO L125 PetriNetUnfolderBase]: For 119448/124007 co-relation queries the response was YES. [2023-11-29 21:45:38,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83117 conditions, 11797 events. 5144/11797 cut-off events. For 119448/124007 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 105179 event pairs, 723 based on Foata normal form. 155/11238 useless extension candidates. Maximal degree in co-relation 67884. Up to 5211 conditions per place. [2023-11-29 21:45:38,662 INFO L140 encePairwiseOnDemand]: 190/220 looper letters, 385 selfloop transitions, 83 changer transitions 166/729 dead transitions. [2023-11-29 21:45:38,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 729 transitions, 15864 flow [2023-11-29 21:45:38,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 21:45:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 21:45:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3541 transitions. [2023-11-29 21:45:38,674 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5550156739811912 [2023-11-29 21:45:38,674 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3541 transitions. [2023-11-29 21:45:38,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3541 transitions. [2023-11-29 21:45:38,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:45:38,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3541 transitions. [2023-11-29 21:45:38,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 122.10344827586206) internal successors, (3541), 29 states have internal predecessors, (3541), 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 21:45:38,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 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 21:45:38,698 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 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 21:45:38,699 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 119 predicate places. [2023-11-29 21:45:38,699 INFO L500 AbstractCegarLoop]: Abstraction has has 312 places, 729 transitions, 15864 flow [2023-11-29 21:45:38,700 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 118.88) internal successors, (2972), 25 states have internal predecessors, (2972), 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 21:45:38,700 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:45:38,700 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:38,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 21:45:38,906 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:38,907 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:45:38,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:45:38,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1250788021, now seen corresponding path program 2 times [2023-11-29 21:45:38,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:45:38,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238424071] [2023-11-29 21:45:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:45:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:45:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:45:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:41,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:45:41,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238424071] [2023-11-29 21:45:41,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238424071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:45:41,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805307897] [2023-11-29 21:45:41,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:45:41,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:45:41,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:45:41,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:45:41,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 21:45:41,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:45:41,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:45:41,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-29 21:45:41,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:45:41,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 21:45:41,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:45:41,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:45:42,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 21:45:42,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 21:45:42,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 21:45:42,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 21:45:42,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:45:42,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 21:45:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:45:42,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:45:57,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:45:57,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 40 [2023-11-29 21:45:57,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 279 [2023-11-29 21:45:57,495 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:45:57,497 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2023-11-29 21:45:57,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 96 [2023-11-29 21:45:57,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-11-29 21:45:57,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2023-11-29 21:45:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 6 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 21:45:59,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805307897] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:45:59,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:45:59,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 21] total 61 [2023-11-29 21:45:59,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803552075] [2023-11-29 21:45:59,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:45:59,640 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 21:45:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:45:59,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 21:45:59,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=3430, Unknown=16, NotChecked=0, Total=3660 [2023-11-29 21:45:59,646 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 220 [2023-11-29 21:45:59,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 729 transitions, 15864 flow. Second operand has 61 states, 61 states have (on average 96.8360655737705) internal successors, (5907), 61 states have internal predecessors, (5907), 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 21:45:59,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:45:59,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 220 [2023-11-29 21:45:59,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:46:05,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 21:46:08,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 21:46:16,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 21:46:22,845 INFO L124 PetriNetUnfolderBase]: 10969/23203 cut-off events. [2023-11-29 21:46:22,846 INFO L125 PetriNetUnfolderBase]: For 305211/314529 co-relation queries the response was YES. [2023-11-29 21:46:22,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186663 conditions, 23203 events. 10969/23203 cut-off events. For 305211/314529 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 221269 event pairs, 778 based on Foata normal form. 459/22356 useless extension candidates. Maximal degree in co-relation 167567. Up to 11236 conditions per place. [2023-11-29 21:46:23,167 INFO L140 encePairwiseOnDemand]: 177/220 looper letters, 1078 selfloop transitions, 352 changer transitions 226/1736 dead transitions. [2023-11-29 21:46:23,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 1736 transitions, 40814 flow [2023-11-29 21:46:23,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-11-29 21:46:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-11-29 21:46:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 9124 transitions. [2023-11-29 21:46:23,181 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.46080808080808083 [2023-11-29 21:46:23,181 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 9124 transitions. [2023-11-29 21:46:23,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 9124 transitions. [2023-11-29 21:46:23,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:46:23,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 9124 transitions. [2023-11-29 21:46:23,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 101.37777777777778) internal successors, (9124), 90 states have internal predecessors, (9124), 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 21:46:23,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 220.0) internal successors, (20020), 91 states have internal predecessors, (20020), 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 21:46:23,222 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 220.0) internal successors, (20020), 91 states have internal predecessors, (20020), 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 21:46:23,223 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 208 predicate places. [2023-11-29 21:46:23,223 INFO L500 AbstractCegarLoop]: Abstraction has has 401 places, 1736 transitions, 40814 flow [2023-11-29 21:46:23,224 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 96.8360655737705) internal successors, (5907), 61 states have internal predecessors, (5907), 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 21:46:23,224 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:46:23,225 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:23,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 21:46:23,430 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 21:46:23,431 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:46:23,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:46:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1506444201, now seen corresponding path program 3 times [2023-11-29 21:46:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:46:23,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169002981] [2023-11-29 21:46:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:46:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:46:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:46:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:46:24,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:46:24,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169002981] [2023-11-29 21:46:24,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169002981] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:46:24,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100893970] [2023-11-29 21:46:24,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:46:24,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:46:24,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:46:24,104 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:46:24,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 21:46:24,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 21:46:24,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:46:24,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 21:46:24,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:46:24,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 21:46:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:46:24,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:46:24,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:46:24,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-11-29 21:46:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:46:24,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100893970] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:46:24,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:46:24,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 21 [2023-11-29 21:46:24,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166185363] [2023-11-29 21:46:24,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:46:24,735 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 21:46:24,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:46:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 21:46:24,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-11-29 21:46:24,739 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 220 [2023-11-29 21:46:24,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 1736 transitions, 40814 flow. Second operand has 21 states, 21 states have (on average 125.9047619047619) internal successors, (2644), 21 states have internal predecessors, (2644), 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 21:46:24,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:46:24,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 220 [2023-11-29 21:46:24,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:46:31,814 INFO L124 PetriNetUnfolderBase]: 12350/25496 cut-off events. [2023-11-29 21:46:31,814 INFO L125 PetriNetUnfolderBase]: For 390900/400285 co-relation queries the response was YES. [2023-11-29 21:46:31,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226483 conditions, 25496 events. 12350/25496 cut-off events. For 390900/400285 co-relation queries the response was YES. Maximal size of possible extension queue 1214. Compared 243203 event pairs, 820 based on Foata normal form. 202/24278 useless extension candidates. Maximal degree in co-relation 205284. Up to 13106 conditions per place. [2023-11-29 21:46:32,144 INFO L140 encePairwiseOnDemand]: 195/220 looper letters, 1370 selfloop transitions, 142 changer transitions 250/1934 dead transitions. [2023-11-29 21:46:32,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 1934 transitions, 49363 flow [2023-11-29 21:46:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 21:46:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-29 21:46:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3363 transitions. [2023-11-29 21:46:32,150 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5879370629370629 [2023-11-29 21:46:32,150 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3363 transitions. [2023-11-29 21:46:32,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3363 transitions. [2023-11-29 21:46:32,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:46:32,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3363 transitions. [2023-11-29 21:46:32,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 129.34615384615384) internal successors, (3363), 26 states have internal predecessors, (3363), 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 21:46:32,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 220.0) internal successors, (5940), 27 states have internal predecessors, (5940), 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 21:46:32,162 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 220.0) internal successors, (5940), 27 states have internal predecessors, (5940), 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 21:46:32,162 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 233 predicate places. [2023-11-29 21:46:32,163 INFO L500 AbstractCegarLoop]: Abstraction has has 426 places, 1934 transitions, 49363 flow [2023-11-29 21:46:32,163 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 125.9047619047619) internal successors, (2644), 21 states have internal predecessors, (2644), 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 21:46:32,163 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:46:32,164 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:32,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 21:46:32,369 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 21:46:32,370 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:46:32,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:46:32,370 INFO L85 PathProgramCache]: Analyzing trace with hash 943617648, now seen corresponding path program 1 times [2023-11-29 21:46:32,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:46:32,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577644047] [2023-11-29 21:46:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:46:32,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:46:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:46:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:46:33,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:46:33,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577644047] [2023-11-29 21:46:33,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577644047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:46:33,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594146847] [2023-11-29 21:46:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:46:33,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:46:33,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:46:33,406 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:46:33,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 21:46:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:46:33,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 21:46:33,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:46:33,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 21:46:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:46:33,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:46:33,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:46:33,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-11-29 21:46:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:46:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594146847] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:46:33,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:46:33,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 25 [2023-11-29 21:46:33,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800051924] [2023-11-29 21:46:33,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:46:33,953 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 21:46:33,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:46:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 21:46:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2023-11-29 21:46:33,957 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 220 [2023-11-29 21:46:33,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 1934 transitions, 49363 flow. Second operand has 25 states, 25 states have (on average 119.0) internal successors, (2975), 25 states have internal predecessors, (2975), 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 21:46:33,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:46:33,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 220 [2023-11-29 21:46:33,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:46:42,972 INFO L124 PetriNetUnfolderBase]: 14049/29317 cut-off events. [2023-11-29 21:46:42,972 INFO L125 PetriNetUnfolderBase]: For 469440/482511 co-relation queries the response was YES. [2023-11-29 21:46:43,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277174 conditions, 29317 events. 14049/29317 cut-off events. For 469440/482511 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 289641 event pairs, 872 based on Foata normal form. 291/27992 useless extension candidates. Maximal degree in co-relation 253609. Up to 15331 conditions per place. [2023-11-29 21:46:43,498 INFO L140 encePairwiseOnDemand]: 191/220 looper letters, 1581 selfloop transitions, 173 changer transitions 274/2186 dead transitions. [2023-11-29 21:46:43,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 2186 transitions, 60399 flow [2023-11-29 21:46:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 21:46:43,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-29 21:46:43,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3672 transitions. [2023-11-29 21:46:43,502 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5563636363636364 [2023-11-29 21:46:43,502 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3672 transitions. [2023-11-29 21:46:43,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3672 transitions. [2023-11-29 21:46:43,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:46:43,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3672 transitions. [2023-11-29 21:46:43,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 122.4) internal successors, (3672), 30 states have internal predecessors, (3672), 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 21:46:43,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 220.0) internal successors, (6820), 31 states have internal predecessors, (6820), 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 21:46:43,513 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 220.0) internal successors, (6820), 31 states have internal predecessors, (6820), 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 21:46:43,514 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 262 predicate places. [2023-11-29 21:46:43,514 INFO L500 AbstractCegarLoop]: Abstraction has has 455 places, 2186 transitions, 60399 flow [2023-11-29 21:46:43,515 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 119.0) internal successors, (2975), 25 states have internal predecessors, (2975), 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 21:46:43,515 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:46:43,515 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:43,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 21:46:43,720 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 21:46:43,720 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:46:43,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:46:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash -962788474, now seen corresponding path program 2 times [2023-11-29 21:46:43,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:46:43,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257828490] [2023-11-29 21:46:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:46:43,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:46:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:46:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:46:45,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:46:45,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257828490] [2023-11-29 21:46:45,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257828490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:46:45,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229519640] [2023-11-29 21:46:45,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:46:45,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:46:45,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:46:45,125 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:46:45,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 21:46:45,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:46:45,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:46:45,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-29 21:46:45,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:46:45,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 21:46:45,310 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 21:46:45,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-29 21:46:45,634 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 21:46:45,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2023-11-29 21:46:46,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 21:46:46,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:46:46,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:46:46,458 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 21:46:46,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 21:46:46,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:46:46,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:46:46,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:46:46,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 21:46:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:46:46,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:46:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:46:47,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229519640] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:46:47,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:46:47,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 13] total 56 [2023-11-29 21:46:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795553286] [2023-11-29 21:46:47,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:46:47,745 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-29 21:46:47,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:46:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-29 21:46:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2867, Unknown=5, NotChecked=0, Total=3080 [2023-11-29 21:46:47,750 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 220 [2023-11-29 21:46:47,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 2186 transitions, 60399 flow. Second operand has 56 states, 56 states have (on average 97.28571428571429) internal successors, (5448), 56 states have internal predecessors, (5448), 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 21:46:47,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:46:47,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 220 [2023-11-29 21:46:47,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:46:52,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 21:47:05,388 INFO L124 PetriNetUnfolderBase]: 16197/33597 cut-off events. [2023-11-29 21:47:05,389 INFO L125 PetriNetUnfolderBase]: For 602790/625581 co-relation queries the response was YES. [2023-11-29 21:47:05,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342317 conditions, 33597 events. 16197/33597 cut-off events. For 602790/625581 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 337829 event pairs, 1054 based on Foata normal form. 515/32348 useless extension candidates. Maximal degree in co-relation 316012. Up to 18094 conditions per place. [2023-11-29 21:47:05,979 INFO L140 encePairwiseOnDemand]: 181/220 looper letters, 2057 selfloop transitions, 337 changer transitions 440/2914 dead transitions. [2023-11-29 21:47:05,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 2914 transitions, 85462 flow [2023-11-29 21:47:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-29 21:47:05,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-11-29 21:47:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 6304 transitions. [2023-11-29 21:47:05,986 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4548340548340548 [2023-11-29 21:47:05,986 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 6304 transitions. [2023-11-29 21:47:05,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 6304 transitions. [2023-11-29 21:47:05,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:47:05,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 6304 transitions. [2023-11-29 21:47:05,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 100.06349206349206) internal successors, (6304), 63 states have internal predecessors, (6304), 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 21:47:06,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 220.0) internal successors, (14080), 64 states have internal predecessors, (14080), 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 21:47:06,007 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 220.0) internal successors, (14080), 64 states have internal predecessors, (14080), 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 21:47:06,007 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 324 predicate places. [2023-11-29 21:47:06,007 INFO L500 AbstractCegarLoop]: Abstraction has has 517 places, 2914 transitions, 85462 flow [2023-11-29 21:47:06,008 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 97.28571428571429) internal successors, (5448), 56 states have internal predecessors, (5448), 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 21:47:06,008 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:47:06,009 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:47:06,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 21:47:06,215 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 21:47:06,215 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:47:06,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:47:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2050900632, now seen corresponding path program 3 times [2023-11-29 21:47:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:47:06,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728323492] [2023-11-29 21:47:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:47:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:47:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:47:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:47:06,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:47:06,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728323492] [2023-11-29 21:47:06,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728323492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:47:06,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967644639] [2023-11-29 21:47:06,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:47:06,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:47:06,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:47:06,736 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:47:06,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 21:47:06,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 21:47:06,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:47:06,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 21:47:06,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:47:07,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 21:47:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:47:07,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:47:07,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:47:07,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-11-29 21:47:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:47:07,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967644639] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:47:07,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:47:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 10] total 23 [2023-11-29 21:47:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481180674] [2023-11-29 21:47:07,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:47:07,359 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 21:47:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:47:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 21:47:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-29 21:47:07,362 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 220 [2023-11-29 21:47:07,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 2914 transitions, 85462 flow. Second operand has 23 states, 23 states have (on average 119.30434782608695) internal successors, (2744), 23 states have internal predecessors, (2744), 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 21:47:07,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:47:07,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 220 [2023-11-29 21:47:07,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:47:22,203 INFO L124 PetriNetUnfolderBase]: 17523/36094 cut-off events. [2023-11-29 21:47:22,204 INFO L125 PetriNetUnfolderBase]: For 720506/741823 co-relation queries the response was YES. [2023-11-29 21:47:22,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394062 conditions, 36094 events. 17523/36094 cut-off events. For 720506/741823 co-relation queries the response was YES. Maximal size of possible extension queue 1831. Compared 366189 event pairs, 980 based on Foata normal form. 300/34427 useless extension candidates. Maximal degree in co-relation 365488. Up to 19941 conditions per place. [2023-11-29 21:47:22,944 INFO L140 encePairwiseOnDemand]: 191/220 looper letters, 2280 selfloop transitions, 194 changer transitions 474/3122 dead transitions. [2023-11-29 21:47:22,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 3122 transitions, 97928 flow [2023-11-29 21:47:22,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 21:47:22,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 21:47:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3526 transitions. [2023-11-29 21:47:22,948 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5526645768025078 [2023-11-29 21:47:22,948 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3526 transitions. [2023-11-29 21:47:22,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3526 transitions. [2023-11-29 21:47:22,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:47:22,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3526 transitions. [2023-11-29 21:47:22,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 121.58620689655173) internal successors, (3526), 29 states have internal predecessors, (3526), 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 21:47:22,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 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 21:47:22,958 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 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 21:47:22,958 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 352 predicate places. [2023-11-29 21:47:22,958 INFO L500 AbstractCegarLoop]: Abstraction has has 545 places, 3122 transitions, 97928 flow [2023-11-29 21:47:22,958 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 119.30434782608695) internal successors, (2744), 23 states have internal predecessors, (2744), 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 21:47:22,959 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:47:22,959 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:47:22,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 21:47:23,165 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 21:47:23,166 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:47:23,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:47:23,166 INFO L85 PathProgramCache]: Analyzing trace with hash 466877385, now seen corresponding path program 4 times [2023-11-29 21:47:23,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:47:23,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74349965] [2023-11-29 21:47:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:47:23,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:47:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:47:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:47:23,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:47:23,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74349965] [2023-11-29 21:47:23,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74349965] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:47:23,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624645686] [2023-11-29 21:47:23,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:47:23,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:47:23,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:47:23,933 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:47:23,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 21:47:24,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:47:24,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:47:24,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 21:47:24,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:47:24,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 21:47:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:47:24,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:47:24,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:47:24,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-11-29 21:47:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:47:24,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624645686] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:47:24,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:47:24,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 10] total 23 [2023-11-29 21:47:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39243161] [2023-11-29 21:47:24,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:47:24,674 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 21:47:24,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:47:24,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 21:47:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-11-29 21:47:24,677 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 220 [2023-11-29 21:47:24,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 3122 transitions, 97928 flow. Second operand has 23 states, 23 states have (on average 119.30434782608695) internal successors, (2744), 23 states have internal predecessors, (2744), 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 21:47:24,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:47:24,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 220 [2023-11-29 21:47:24,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:47:42,889 INFO L124 PetriNetUnfolderBase]: 18886/38846 cut-off events. [2023-11-29 21:47:42,890 INFO L125 PetriNetUnfolderBase]: For 806271/835825 co-relation queries the response was YES. [2023-11-29 21:47:43,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450545 conditions, 38846 events. 18886/38846 cut-off events. For 806271/835825 co-relation queries the response was YES. Maximal size of possible extension queue 1986. Compared 397890 event pairs, 1070 based on Foata normal form. 546/37386 useless extension candidates. Maximal degree in co-relation 419414. Up to 21794 conditions per place. [2023-11-29 21:47:43,574 INFO L140 encePairwiseOnDemand]: 191/220 looper letters, 2458 selfloop transitions, 195 changer transitions 502/3329 dead transitions. [2023-11-29 21:47:43,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 3329 transitions, 111141 flow [2023-11-29 21:47:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 21:47:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 21:47:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3533 transitions. [2023-11-29 21:47:43,577 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5537617554858935 [2023-11-29 21:47:43,578 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3533 transitions. [2023-11-29 21:47:43,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3533 transitions. [2023-11-29 21:47:43,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:47:43,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3533 transitions. [2023-11-29 21:47:43,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 121.82758620689656) internal successors, (3533), 29 states have internal predecessors, (3533), 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 21:47:43,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 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 21:47:43,588 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 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 21:47:43,588 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 380 predicate places. [2023-11-29 21:47:43,588 INFO L500 AbstractCegarLoop]: Abstraction has has 573 places, 3329 transitions, 111141 flow [2023-11-29 21:47:43,589 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 119.30434782608695) internal successors, (2744), 23 states have internal predecessors, (2744), 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 21:47:43,589 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:47:43,589 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:47:43,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 21:47:43,795 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:47:43,796 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:47:43,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:47:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2089603462, now seen corresponding path program 4 times [2023-11-29 21:47:43,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:47:43,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680110403] [2023-11-29 21:47:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:47:43,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:47:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:47:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:47:45,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:47:45,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680110403] [2023-11-29 21:47:45,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680110403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:47:45,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082846357] [2023-11-29 21:47:45,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:47:45,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:47:45,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:47:45,670 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:47:45,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 21:47:45,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:47:45,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:47:45,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 21:47:45,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:47:45,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 21:47:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:47:45,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:47:46,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:47:46,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-11-29 21:47:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:47:46,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082846357] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:47:46,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:47:46,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 10, 10] total 33 [2023-11-29 21:47:46,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487283461] [2023-11-29 21:47:46,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:47:46,146 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 21:47:46,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:47:46,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 21:47:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 21:47:46,149 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 220 [2023-11-29 21:47:46,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 3329 transitions, 111141 flow. Second operand has 33 states, 33 states have (on average 106.0909090909091) internal successors, (3501), 33 states have internal predecessors, (3501), 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 21:47:46,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:47:46,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 220 [2023-11-29 21:47:46,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:48:14,169 INFO L124 PetriNetUnfolderBase]: 22796/46816 cut-off events. [2023-11-29 21:48:14,169 INFO L125 PetriNetUnfolderBase]: For 1075539/1107138 co-relation queries the response was YES. [2023-11-29 21:48:14,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575437 conditions, 46816 events. 22796/46816 cut-off events. For 1075539/1107138 co-relation queries the response was YES. Maximal size of possible extension queue 2440. Compared 495705 event pairs, 1022 based on Foata normal form. 891/45243 useless extension candidates. Maximal degree in co-relation 540466. Up to 27092 conditions per place. [2023-11-29 21:48:15,073 INFO L140 encePairwiseOnDemand]: 186/220 looper letters, 2780 selfloop transitions, 591 changer transitions 532/3989 dead transitions. [2023-11-29 21:48:15,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 3989 transitions, 140585 flow [2023-11-29 21:48:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 21:48:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-29 21:48:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 4702 transitions. [2023-11-29 21:48:15,077 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4970401691331924 [2023-11-29 21:48:15,077 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 4702 transitions. [2023-11-29 21:48:15,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 4702 transitions. [2023-11-29 21:48:15,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:48:15,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 4702 transitions. [2023-11-29 21:48:15,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 109.34883720930233) internal successors, (4702), 43 states have internal predecessors, (4702), 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 21:48:15,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 220.0) internal successors, (9680), 44 states have internal predecessors, (9680), 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 21:48:15,089 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 220.0) internal successors, (9680), 44 states have internal predecessors, (9680), 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 21:48:15,090 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 422 predicate places. [2023-11-29 21:48:15,090 INFO L500 AbstractCegarLoop]: Abstraction has has 615 places, 3989 transitions, 140585 flow [2023-11-29 21:48:15,090 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 106.0909090909091) internal successors, (3501), 33 states have internal predecessors, (3501), 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 21:48:15,090 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:48:15,091 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:48:15,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 21:48:15,296 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:48:15,297 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:48:15,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:48:15,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2121956655, now seen corresponding path program 5 times [2023-11-29 21:48:15,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:48:15,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638072084] [2023-11-29 21:48:15,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:48:15,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:48:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:48:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:48:15,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:48:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638072084] [2023-11-29 21:48:15,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638072084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:48:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457430756] [2023-11-29 21:48:15,853 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 21:48:15,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:48:15,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:48:15,854 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:48:15,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 21:48:16,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 21:48:16,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:48:16,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 21:48:16,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:48:16,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 21:48:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:48:16,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:48:16,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:48:16,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-11-29 21:48:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:48:16,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457430756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:48:16,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:48:16,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 23 [2023-11-29 21:48:16,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029849834] [2023-11-29 21:48:16,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:48:16,367 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 21:48:16,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:48:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 21:48:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-11-29 21:48:16,370 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 220 [2023-11-29 21:48:16,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 3989 transitions, 140585 flow. Second operand has 23 states, 23 states have (on average 125.6086956521739) internal successors, (2889), 23 states have internal predecessors, (2889), 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 21:48:16,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:48:16,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 220 [2023-11-29 21:48:16,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:48:50,398 INFO L124 PetriNetUnfolderBase]: 25554/52091 cut-off events. [2023-11-29 21:48:50,398 INFO L125 PetriNetUnfolderBase]: For 1266854/1297442 co-relation queries the response was YES. [2023-11-29 21:48:50,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679375 conditions, 52091 events. 25554/52091 cut-off events. For 1266854/1297442 co-relation queries the response was YES. Maximal size of possible extension queue 2751. Compared 557627 event pairs, 1143 based on Foata normal form. 614/49983 useless extension candidates. Maximal degree in co-relation 641585. Up to 30800 conditions per place. [2023-11-29 21:48:51,408 INFO L140 encePairwiseOnDemand]: 195/220 looper letters, 3369 selfloop transitions, 413 changer transitions 569/4585 dead transitions. [2023-11-29 21:48:51,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 4585 transitions, 171035 flow [2023-11-29 21:48:51,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 21:48:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 21:48:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3769 transitions. [2023-11-29 21:48:51,411 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5907523510971787 [2023-11-29 21:48:51,412 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3769 transitions. [2023-11-29 21:48:51,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3769 transitions. [2023-11-29 21:48:51,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:48:51,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3769 transitions. [2023-11-29 21:48:51,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 129.9655172413793) internal successors, (3769), 29 states have internal predecessors, (3769), 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 21:48:51,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 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 21:48:51,420 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 220.0) internal successors, (6600), 30 states have internal predecessors, (6600), 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 21:48:51,421 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 450 predicate places. [2023-11-29 21:48:51,421 INFO L500 AbstractCegarLoop]: Abstraction has has 643 places, 4585 transitions, 171035 flow [2023-11-29 21:48:51,421 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 125.6086956521739) internal successors, (2889), 23 states have internal predecessors, (2889), 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 21:48:51,421 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:48:51,422 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:48:51,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 21:48:51,627 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:48:51,628 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:48:51,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:48:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash -256882839, now seen corresponding path program 6 times [2023-11-29 21:48:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:48:51,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443130832] [2023-11-29 21:48:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:48:51,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:48:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:48:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:48:53,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:48:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443130832] [2023-11-29 21:48:53,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443130832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:48:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223825226] [2023-11-29 21:48:53,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 21:48:53,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:48:53,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:48:53,209 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:48:53,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 21:48:53,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 21:48:53,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:48:53,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 21:48:53,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:48:53,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 21:48:53,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:48:53,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:48:54,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:48:54,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:48:54,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 21:48:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:48:54,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:48:54,543 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_900 (Array Int Int)) (v_ArrVal_901 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t2~0.base| v_ArrVal_900) |c_thread1Thread1of1ForFork2_~#t3~0.base| v_ArrVal_901) c_~X_0~0.base))) (= (+ (select .cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0) (select .cse0 (+ c_~X_0~0.offset 4))))) is different from false [2023-11-29 21:48:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:48:54,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223825226] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:48:54,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:48:54,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 12] total 50 [2023-11-29 21:48:54,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922017995] [2023-11-29 21:48:54,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:48:54,551 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 21:48:54,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:48:54,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 21:48:54,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2176, Unknown=9, NotChecked=94, Total=2450 [2023-11-29 21:48:54,555 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 220 [2023-11-29 21:48:54,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 4585 transitions, 171035 flow. Second operand has 50 states, 50 states have (on average 104.92) internal successors, (5246), 50 states have internal predecessors, (5246), 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 21:48:54,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:48:54,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 220 [2023-11-29 21:48:54,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:49:45,009 INFO L124 PetriNetUnfolderBase]: 26942/54717 cut-off events. [2023-11-29 21:49:45,009 INFO L125 PetriNetUnfolderBase]: For 1453594/1492708 co-relation queries the response was YES. [2023-11-29 21:49:45,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753914 conditions, 54717 events. 26942/54717 cut-off events. For 1453594/1492708 co-relation queries the response was YES. Maximal size of possible extension queue 2916. Compared 588999 event pairs, 1507 based on Foata normal form. 1273/53116 useless extension candidates. Maximal degree in co-relation 713139. Up to 32684 conditions per place. [2023-11-29 21:49:46,090 INFO L140 encePairwiseOnDemand]: 186/220 looper letters, 3651 selfloop transitions, 478 changer transitions 597/4812 dead transitions. [2023-11-29 21:49:46,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 4812 transitions, 188832 flow [2023-11-29 21:49:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 21:49:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-11-29 21:49:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4239 transitions. [2023-11-29 21:49:46,093 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.49405594405594405 [2023-11-29 21:49:46,093 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4239 transitions. [2023-11-29 21:49:46,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4239 transitions. [2023-11-29 21:49:46,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:49:46,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4239 transitions. [2023-11-29 21:49:46,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 108.6923076923077) internal successors, (4239), 39 states have internal predecessors, (4239), 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 21:49:46,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 220.0) internal successors, (8800), 40 states have internal predecessors, (8800), 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 21:49:46,104 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 220.0) internal successors, (8800), 40 states have internal predecessors, (8800), 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 21:49:46,104 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 488 predicate places. [2023-11-29 21:49:46,104 INFO L500 AbstractCegarLoop]: Abstraction has has 681 places, 4812 transitions, 188832 flow [2023-11-29 21:49:46,105 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 104.92) internal successors, (5246), 50 states have internal predecessors, (5246), 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 21:49:46,105 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:49:46,105 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:49:46,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 21:49:46,311 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 21:49:46,312 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:49:46,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:49:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1741320654, now seen corresponding path program 1 times [2023-11-29 21:49:46,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:49:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176841102] [2023-11-29 21:49:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:49:46,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:49:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:49:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:49:47,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:49:47,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176841102] [2023-11-29 21:49:47,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176841102] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:49:47,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995706952] [2023-11-29 21:49:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:49:47,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:49:47,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:49:47,081 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:49:47,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 21:49:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:49:47,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:49:47,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:49:47,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 21:49:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:49:47,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:49:47,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:49:47,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-11-29 21:49:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:49:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995706952] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:49:47,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:49:47,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 22 [2023-11-29 21:49:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684690666] [2023-11-29 21:49:47,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:49:47,596 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 21:49:47,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:49:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 21:49:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-11-29 21:49:47,598 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 220 [2023-11-29 21:49:47,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 4812 transitions, 188832 flow. Second operand has 22 states, 22 states have (on average 125.72727272727273) internal successors, (2766), 22 states have internal predecessors, (2766), 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 21:49:47,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:49:47,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 220 [2023-11-29 21:49:47,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:50:36,885 INFO L124 PetriNetUnfolderBase]: 28244/57433 cut-off events. [2023-11-29 21:50:36,885 INFO L125 PetriNetUnfolderBase]: For 1674587/1714493 co-relation queries the response was YES. [2023-11-29 21:50:37,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828904 conditions, 57433 events. 28244/57433 cut-off events. For 1674587/1714493 co-relation queries the response was YES. Maximal size of possible extension queue 3101. Compared 624306 event pairs, 1315 based on Foata normal form. 848/55215 useless extension candidates. Maximal degree in co-relation 785390. Up to 34450 conditions per place. [2023-11-29 21:50:38,179 INFO L140 encePairwiseOnDemand]: 195/220 looper letters, 3729 selfloop transitions, 406 changer transitions 631/5020 dead transitions. [2023-11-29 21:50:38,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 5020 transitions, 207006 flow [2023-11-29 21:50:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 21:50:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-29 21:50:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4132 transitions. [2023-11-29 21:50:38,182 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5869318181818182 [2023-11-29 21:50:38,182 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4132 transitions. [2023-11-29 21:50:38,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4132 transitions. [2023-11-29 21:50:38,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:50:38,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4132 transitions. [2023-11-29 21:50:38,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 129.125) internal successors, (4132), 32 states have internal predecessors, (4132), 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 21:50:38,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 220.0) internal successors, (7260), 33 states have internal predecessors, (7260), 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 21:50:38,192 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 220.0) internal successors, (7260), 33 states have internal predecessors, (7260), 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 21:50:38,192 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 519 predicate places. [2023-11-29 21:50:38,192 INFO L500 AbstractCegarLoop]: Abstraction has has 712 places, 5020 transitions, 207006 flow [2023-11-29 21:50:38,193 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 125.72727272727273) internal successors, (2766), 22 states have internal predecessors, (2766), 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 21:50:38,193 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:50:38,193 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:50:38,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 21:50:38,399 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:50:38,399 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:50:38,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:50:38,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1261676167, now seen corresponding path program 1 times [2023-11-29 21:50:38,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:50:38,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451496399] [2023-11-29 21:50:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:50:38,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:50:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:50:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:50:39,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:50:39,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451496399] [2023-11-29 21:50:39,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451496399] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:50:39,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934209628] [2023-11-29 21:50:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:50:39,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:50:39,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:50:39,829 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:50:39,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 21:50:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:50:39,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 21:50:40,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:50:40,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 21:50:40,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 21:50:40,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 21:50:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:50:40,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:50:40,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:50:40,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2023-11-29 21:50:40,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2023-11-29 21:50:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:50:40,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934209628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:50:40,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:50:40,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 17, 17] total 49 [2023-11-29 21:50:40,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758428515] [2023-11-29 21:50:40,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:50:40,870 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-29 21:50:40,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:50:40,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-29 21:50:40,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2154, Unknown=13, NotChecked=0, Total=2352 [2023-11-29 21:50:40,873 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 220 [2023-11-29 21:50:40,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 5020 transitions, 207006 flow. Second operand has 49 states, 49 states have (on average 104.87755102040816) internal successors, (5139), 49 states have internal predecessors, (5139), 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 21:50:40,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:50:40,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 220 [2023-11-29 21:50:40,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:51:43,225 INFO L124 PetriNetUnfolderBase]: 29031/59027 cut-off events. [2023-11-29 21:51:43,225 INFO L125 PetriNetUnfolderBase]: For 1840864/1889824 co-relation queries the response was YES. [2023-11-29 21:51:43,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893201 conditions, 59027 events. 29031/59027 cut-off events. For 1840864/1889824 co-relation queries the response was YES. Maximal size of possible extension queue 3217. Compared 644990 event pairs, 1418 based on Foata normal form. 605/56494 useless extension candidates. Maximal degree in co-relation 846467. Up to 35508 conditions per place. [2023-11-29 21:51:44,861 INFO L140 encePairwiseOnDemand]: 186/220 looper letters, 4217 selfloop transitions, 348 changer transitions 689/5340 dead transitions. [2023-11-29 21:51:44,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 5340 transitions, 230277 flow [2023-11-29 21:51:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 21:51:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 21:51:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3587 transitions. [2023-11-29 21:51:44,864 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4940771349862259 [2023-11-29 21:51:44,864 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3587 transitions. [2023-11-29 21:51:44,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3587 transitions. [2023-11-29 21:51:44,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:51:44,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3587 transitions. [2023-11-29 21:51:44,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 108.6969696969697) internal successors, (3587), 33 states have internal predecessors, (3587), 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 21:51:44,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 220.0) internal successors, (7480), 34 states have internal predecessors, (7480), 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 21:51:44,877 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 220.0) internal successors, (7480), 34 states have internal predecessors, (7480), 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 21:51:44,877 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 551 predicate places. [2023-11-29 21:51:44,878 INFO L500 AbstractCegarLoop]: Abstraction has has 744 places, 5340 transitions, 230277 flow [2023-11-29 21:51:44,878 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 104.87755102040816) internal successors, (5139), 49 states have internal predecessors, (5139), 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 21:51:44,878 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:51:44,879 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:51:44,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 21:51:45,086 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:51:45,087 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:51:45,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:51:45,088 INFO L85 PathProgramCache]: Analyzing trace with hash -280852895, now seen corresponding path program 2 times [2023-11-29 21:51:45,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:51:45,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861629914] [2023-11-29 21:51:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:51:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:51:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:51:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:51:46,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:51:46,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861629914] [2023-11-29 21:51:46,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861629914] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:51:46,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99630429] [2023-11-29 21:51:46,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:51:46,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:51:46,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:51:46,312 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:51:46,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 21:51:46,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:51:46,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:51:46,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 21:51:46,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:51:46,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 21:51:46,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 21:51:46,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 21:51:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:51:47,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:51:47,150 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1047 (Array Int Int))) (= (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t3~0.base| v_ArrVal_1047) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0) (+ c_~s_6~0 c_~t_8~0))) is different from false [2023-11-29 21:51:47,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:51:47,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2023-11-29 21:51:47,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2023-11-29 21:51:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:51:47,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99630429] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:51:47,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:51:47,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 17, 17] total 47 [2023-11-29 21:51:47,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517448699] [2023-11-29 21:51:47,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:51:47,417 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 21:51:47,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:51:47,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 21:51:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1901, Unknown=1, NotChecked=88, Total=2162 [2023-11-29 21:51:47,421 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 220 [2023-11-29 21:51:47,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 5340 transitions, 230277 flow. Second operand has 47 states, 47 states have (on average 104.93617021276596) internal successors, (4932), 47 states have internal predecessors, (4932), 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 21:51:47,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:51:47,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 220 [2023-11-29 21:51:47,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:53:03,857 INFO L124 PetriNetUnfolderBase]: 29755/60589 cut-off events. [2023-11-29 21:53:03,857 INFO L125 PetriNetUnfolderBase]: For 1975630/2025115 co-relation queries the response was YES. [2023-11-29 21:53:04,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957296 conditions, 60589 events. 29755/60589 cut-off events. For 1975630/2025115 co-relation queries the response was YES. Maximal size of possible extension queue 3321. Compared 665369 event pairs, 1300 based on Foata normal form. 705/58194 useless extension candidates. Maximal degree in co-relation 907795. Up to 36492 conditions per place. [2023-11-29 21:53:05,496 INFO L140 encePairwiseOnDemand]: 186/220 looper letters, 4330 selfloop transitions, 338 changer transitions 704/5458 dead transitions. [2023-11-29 21:53:05,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 5458 transitions, 245711 flow [2023-11-29 21:53:05,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 21:53:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-29 21:53:05,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4017 transitions. [2023-11-29 21:53:05,499 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4934889434889435 [2023-11-29 21:53:05,499 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4017 transitions. [2023-11-29 21:53:05,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4017 transitions. [2023-11-29 21:53:05,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:53:05,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4017 transitions. [2023-11-29 21:53:05,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 108.56756756756756) internal successors, (4017), 37 states have internal predecessors, (4017), 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 21:53:05,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 220.0) internal successors, (8360), 38 states have internal predecessors, (8360), 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 21:53:05,507 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 220.0) internal successors, (8360), 38 states have internal predecessors, (8360), 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 21:53:05,507 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 587 predicate places. [2023-11-29 21:53:05,507 INFO L500 AbstractCegarLoop]: Abstraction has has 780 places, 5458 transitions, 245711 flow [2023-11-29 21:53:05,508 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 104.93617021276596) internal successors, (4932), 47 states have internal predecessors, (4932), 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 21:53:05,508 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:53:05,508 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:05,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 21:53:05,708 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:53:05,709 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:53:05,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:53:05,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1626745239, now seen corresponding path program 7 times [2023-11-29 21:53:05,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:53:05,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334508528] [2023-11-29 21:53:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:53:05,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:53:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:53:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 21:53:06,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:53:06,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334508528] [2023-11-29 21:53:06,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334508528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:53:06,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992683406] [2023-11-29 21:53:06,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 21:53:06,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:53:06,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:53:06,687 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:53:06,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 21:53:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:53:06,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 21:53:06,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:53:07,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 21:53:07,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 21:53:07,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 21:53:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 21:53:07,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:53:07,438 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1096 (Array Int Int))) (= (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t3~0.base| v_ArrVal_1096) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))) c_~s_2~0)) is different from false [2023-11-29 21:53:07,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:53:07,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2023-11-29 21:53:07,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2023-11-29 21:53:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2023-11-29 21:53:07,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992683406] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:53:07,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:53:07,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 17] total 42 [2023-11-29 21:53:07,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959649599] [2023-11-29 21:53:07,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:53:07,729 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 21:53:07,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:53:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 21:53:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1490, Unknown=9, NotChecked=78, Total=1722 [2023-11-29 21:53:07,733 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 220 [2023-11-29 21:53:07,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 5458 transitions, 245711 flow. Second operand has 42 states, 42 states have (on average 111.0) internal successors, (4662), 42 states have internal predecessors, (4662), 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 21:53:07,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:53:07,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 220 [2023-11-29 21:53:07,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:54:18,122 INFO L124 PetriNetUnfolderBase]: 30431/61438 cut-off events. [2023-11-29 21:54:18,122 INFO L125 PetriNetUnfolderBase]: For 2147180/2196348 co-relation queries the response was YES. [2023-11-29 21:54:18,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020785 conditions, 61438 events. 30431/61438 cut-off events. For 2147180/2196348 co-relation queries the response was YES. Maximal size of possible extension queue 3364. Compared 670567 event pairs, 1723 based on Foata normal form. 409/58669 useless extension candidates. Maximal degree in co-relation 968420. Up to 37408 conditions per place. [2023-11-29 21:54:19,716 INFO L140 encePairwiseOnDemand]: 190/220 looper letters, 4397 selfloop transitions, 331 changer transitions 719/5621 dead transitions. [2023-11-29 21:54:19,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 5621 transitions, 263660 flow [2023-11-29 21:54:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 21:54:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 21:54:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3587 transitions. [2023-11-29 21:54:19,718 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5259530791788857 [2023-11-29 21:54:19,718 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3587 transitions. [2023-11-29 21:54:19,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3587 transitions. [2023-11-29 21:54:19,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:54:19,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3587 transitions. [2023-11-29 21:54:19,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 115.70967741935483) internal successors, (3587), 31 states have internal predecessors, (3587), 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 21:54:19,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 220.0) internal successors, (7040), 32 states have internal predecessors, (7040), 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 21:54:19,724 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 220.0) internal successors, (7040), 32 states have internal predecessors, (7040), 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 21:54:19,725 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 617 predicate places. [2023-11-29 21:54:19,725 INFO L500 AbstractCegarLoop]: Abstraction has has 810 places, 5621 transitions, 263660 flow [2023-11-29 21:54:19,725 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 111.0) internal successors, (4662), 42 states have internal predecessors, (4662), 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 21:54:19,725 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:54:19,726 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:19,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 21:54:19,926 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 21:54:19,926 INFO L425 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:54:19,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:54:19,927 INFO L85 PathProgramCache]: Analyzing trace with hash -485674750, now seen corresponding path program 2 times [2023-11-29 21:54:19,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:54:19,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193231736] [2023-11-29 21:54:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:54:19,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:54:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:54:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:54:21,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:54:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193231736] [2023-11-29 21:54:21,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193231736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:54:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150405784] [2023-11-29 21:54:21,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:54:21,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:54:21,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:54:21,023 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:54:21,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 21:54:21,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:54:21,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:54:21,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-29 21:54:21,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:54:21,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 21:54:21,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 21:54:21,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:54:21,704 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 21:54:21,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 21:54:21,743 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 21:54:21,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 21:54:21,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:54:21,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 21:54:22,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 21:54:22,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:54:22,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 21:54:22,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:54:22,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:54:22,611 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1152 (Array Int Int))) (= (+ (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0) (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t3~0.base| v_ArrVal_1152) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))))) is different from false [2023-11-29 21:54:22,720 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1152 (Array Int Int)) (v_ArrVal_1151 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t2~0.base| v_ArrVal_1151))) (= (select (select (store .cse0 |c_thread1Thread1of1ForFork2_~#t3~0.base| v_ArrVal_1152) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) (+ (select (select .cse0 c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) c_~s_2~0)))) is different from false [2023-11-29 21:54:22,731 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1152 (Array Int Int)) (v_ArrVal_1151 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_thread1Thread1of1ForFork2_~#t2~0.base| v_ArrVal_1151)) (.cse1 (+ c_~X_0~0.offset 4))) (= (select (select (store .cse0 |c_thread1Thread1of1ForFork2_~#t3~0.base| v_ArrVal_1152) c_~X_0~0.base) .cse1) (select (select .cse0 c_~X_0~0.base) .cse1)))) is different from false [2023-11-29 21:54:23,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:54:23,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 43 [2023-11-29 21:54:23,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2470 treesize of output 2230 [2023-11-29 21:54:23,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 74 [2023-11-29 21:54:23,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-11-29 21:54:23,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2023-11-29 21:54:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 6 times theorem prover too weak. 4 trivial. 2 not checked. [2023-11-29 21:54:23,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150405784] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:54:23,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:54:23,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 22] total 63 [2023-11-29 21:54:23,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988843854] [2023-11-29 21:54:23,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:54:23,772 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-11-29 21:54:23,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:54:23,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-11-29 21:54:23,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3294, Unknown=38, NotChecked=354, Total=3906 [2023-11-29 21:54:23,776 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 220 [2023-11-29 21:54:23,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 5621 transitions, 263660 flow. Second operand has 63 states, 63 states have (on average 96.39682539682539) internal successors, (6073), 63 states have internal predecessors, (6073), 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 21:54:23,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:54:23,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 220 [2023-11-29 21:54:23,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:55:48,501 INFO L124 PetriNetUnfolderBase]: 31663/64161 cut-off events. [2023-11-29 21:55:48,501 INFO L125 PetriNetUnfolderBase]: For 2380625/2436892 co-relation queries the response was YES. [2023-11-29 21:55:49,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107512 conditions, 64161 events. 31663/64161 cut-off events. For 2380625/2436892 co-relation queries the response was YES. Maximal size of possible extension queue 3468. Compared 703689 event pairs, 1358 based on Foata normal form. 872/61698 useless extension candidates. Maximal degree in co-relation 1050074. Up to 39073 conditions per place. [2023-11-29 21:55:50,354 INFO L140 encePairwiseOnDemand]: 182/220 looper letters, 4837 selfloop transitions, 521 changer transitions 762/6200 dead transitions. [2023-11-29 21:55:50,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 6200 transitions, 301732 flow [2023-11-29 21:55:50,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 21:55:50,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-11-29 21:55:50,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 5620 transitions. [2023-11-29 21:55:50,357 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.45616883116883117 [2023-11-29 21:55:50,357 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 5620 transitions. [2023-11-29 21:55:50,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 5620 transitions. [2023-11-29 21:55:50,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:55:50,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 5620 transitions. [2023-11-29 21:55:50,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 100.35714285714286) internal successors, (5620), 56 states have internal predecessors, (5620), 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 21:55:50,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 220.0) internal successors, (12540), 57 states have internal predecessors, (12540), 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 21:55:50,369 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 220.0) internal successors, (12540), 57 states have internal predecessors, (12540), 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 21:55:50,370 INFO L307 CegarLoopForPetriNet]: 193 programPoint places, 672 predicate places. [2023-11-29 21:55:50,370 INFO L500 AbstractCegarLoop]: Abstraction has has 865 places, 6200 transitions, 301732 flow [2023-11-29 21:55:50,370 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 96.39682539682539) internal successors, (6073), 63 states have internal predecessors, (6073), 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 21:55:50,370 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:55:50,371 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:55:50,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 21:55:50,571 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 21:55:50,572 INFO L425 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-29 21:55:50,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:55:50,572 INFO L85 PathProgramCache]: Analyzing trace with hash -785994590, now seen corresponding path program 3 times [2023-11-29 21:55:50,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:55:50,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139150790] [2023-11-29 21:55:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:55:50,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:55:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:55:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:55:51,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:55:51,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139150790] [2023-11-29 21:55:51,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139150790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:55:51,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197507554] [2023-11-29 21:55:51,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:55:51,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:55:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:55:51,575 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:55:51,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 21:55:51,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 21:55:51,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:55:51,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 21:55:51,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:55:52,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 21:55:52,423 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 21:55:52,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 21:55:52,448 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 21:55:52,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 21:55:52,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 21:55:52,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:55:52,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 21:55:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:55:53,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:55:56,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 21:55:56,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 40 [2023-11-29 21:55:56,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-29 21:55:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:55:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197507554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:55:57,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:55:57,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 25] total 71 [2023-11-29 21:55:57,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909884569] [2023-11-29 21:55:57,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:55:57,069 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-11-29 21:55:57,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:55:57,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-11-29 21:55:57,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=4642, Unknown=4, NotChecked=0, Total=4970 [2023-11-29 21:55:57,074 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 220 [2023-11-29 21:55:57,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 865 places, 6200 transitions, 301732 flow. Second operand has 71 states, 71 states have (on average 94.32394366197182) internal successors, (6697), 71 states have internal predecessors, (6697), 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 21:55:57,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:55:57,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 220 [2023-11-29 21:55:57,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:56:11,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 21:56:22,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 21:56:24,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-11-29 21:57:28,455 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 21:57:28,456 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 21:57:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2023-11-29 21:57:28,770 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-29 21:57:28,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-29 21:57:28,974 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 21:57:28,974 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (71states, 91/220 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 909580 conditions, 53125 events (24665/53124 cut-off events. For 2378242/2485689 co-relation queries the response was YES. Maximal size of possible extension queue 8167. Compared 692691 event pairs, 385 based on Foata normal form. 2039/59982 useless extension candidates. Maximal degree in co-relation 679306. Up to 30833 conditions per place.). [2023-11-29 21:57:28,975 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-11-29 21:57:28,975 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-29 21:57:28,976 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-29 21:57:28,976 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-29 21:57:28,976 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork2Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-11-29 21:57:28,976 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork2Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-11-29 21:57:28,976 INFO L457 BasicCegarLoop]: Path program histogram: [7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 21:57:28,979 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 21:57:28,979 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 21:57:28,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:57:28 BasicIcfg [2023-11-29 21:57:28,982 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 21:57:28,983 INFO L158 Benchmark]: Toolchain (without parser) took 732023.98ms. Allocated memory was 352.3MB in the beginning and 11.8GB in the end (delta: 11.5GB). Free memory was 299.0MB in the beginning and 7.0GB in the end (delta: -6.7GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. [2023-11-29 21:57:28,983 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 352.3MB. Free memory was 305.5MB in the beginning and 305.3MB in the end (delta: 216.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 21:57:28,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.27ms. Allocated memory is still 352.3MB. Free memory was 299.0MB in the beginning and 286.7MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-29 21:57:28,983 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.57ms. Allocated memory is still 352.3MB. Free memory was 286.5MB in the beginning and 283.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-29 21:57:28,983 INFO L158 Benchmark]: Boogie Preprocessor took 55.50ms. Allocated memory is still 352.3MB. Free memory was 283.4MB in the beginning and 281.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 21:57:28,983 INFO L158 Benchmark]: RCFGBuilder took 831.47ms. Allocated memory is still 352.3MB. Free memory was 281.3MB in the beginning and 233.1MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.0GB. [2023-11-29 21:57:28,984 INFO L158 Benchmark]: TraceAbstraction took 730854.48ms. Allocated memory was 352.3MB in the beginning and 11.8GB in the end (delta: 11.5GB). Free memory was 232.2MB in the beginning and 7.0GB in the end (delta: -6.8GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. [2023-11-29 21:57:28,985 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 352.3MB. Free memory was 305.5MB in the beginning and 305.3MB in the end (delta: 216.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 223.27ms. Allocated memory is still 352.3MB. Free memory was 299.0MB in the beginning and 286.7MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.57ms. Allocated memory is still 352.3MB. Free memory was 286.5MB in the beginning and 283.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 55.50ms. Allocated memory is still 352.3MB. Free memory was 283.4MB in the beginning and 281.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 831.47ms. Allocated memory is still 352.3MB. Free memory was 281.3MB in the beginning and 233.1MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.0GB. * TraceAbstraction took 730854.48ms. Allocated memory was 352.3MB in the beginning and 11.8GB in the end (delta: 11.5GB). Free memory was 232.2MB in the beginning and 7.0GB in the end (delta: -6.8GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (71states, 91/220 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 909580 conditions, 53125 events (24665/53124 cut-off events. For 2378242/2485689 co-relation queries the response was YES. Maximal size of possible extension queue 8167. Compared 692691 event pairs, 385 based on Foata normal form. 2039/59982 useless extension candidates. Maximal degree in co-relation 679306. Up to 30833 conditions per place.). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (71states, 91/220 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 909580 conditions, 53125 events (24665/53124 cut-off events. For 2378242/2485689 co-relation queries the response was YES. Maximal size of possible extension queue 8167. Compared 692691 event pairs, 385 based on Foata normal form. 2039/59982 useless extension candidates. Maximal degree in co-relation 679306. Up to 30833 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (71states, 91/220 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 909580 conditions, 53125 events (24665/53124 cut-off events. For 2378242/2485689 co-relation queries the response was YES. Maximal size of possible extension queue 8167. Compared 692691 event pairs, 385 based on Foata normal form. 2039/59982 useless extension candidates. Maximal degree in co-relation 679306. Up to 30833 conditions per place.). - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (71states, 91/220 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 909580 conditions, 53125 events (24665/53124 cut-off events. For 2378242/2485689 co-relation queries the response was YES. Maximal size of possible extension queue 8167. Compared 692691 event pairs, 385 based on Foata normal form. 2039/59982 useless extension candidates. Maximal degree in co-relation 679306. Up to 30833 conditions per place.). - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (71states, 91/220 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 909580 conditions, 53125 events (24665/53124 cut-off events. For 2378242/2485689 co-relation queries the response was YES. Maximal size of possible extension queue 8167. Compared 692691 event pairs, 385 based on Foata normal form. 2039/59982 useless extension candidates. Maximal degree in co-relation 679306. Up to 30833 conditions per place.). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (71states, 91/220 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 909580 conditions, 53125 events (24665/53124 cut-off events. For 2378242/2485689 co-relation queries the response was YES. Maximal size of possible extension queue 8167. Compared 692691 event pairs, 385 based on Foata normal form. 2039/59982 useless extension candidates. Maximal degree in co-relation 679306. Up to 30833 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (71states, 91/220 universal loopers) in iteration 28,while PetriNetUnfolder was constructing finite prefix that currently has 909580 conditions, 53125 events (24665/53124 cut-off events. For 2378242/2485689 co-relation queries the response was YES. Maximal size of possible extension queue 8167. Compared 692691 event pairs, 385 based on Foata normal form. 2039/59982 useless extension candidates. Maximal degree in co-relation 679306. Up to 30833 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 263 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 730.7s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 663.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 207 mSolverCounterUnknown, 13726 SdHoareTripleChecker+Valid, 39.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13726 mSDsluCounter, 21234 SdHoareTripleChecker+Invalid, 35.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1974 IncrementalHoareTripleChecker+Unchecked, 19962 mSDsCounter, 638 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49622 IncrementalHoareTripleChecker+Invalid, 52441 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 638 mSolverCounterUnsat, 1272 mSDtfsCounter, 49622 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8997 GetRequests, 7540 SyntacticMatches, 25 SemanticMatches, 1432 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 34170 ImplicationChecksByTransitivity, 60.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=301732occurred in iteration=27, InterpolantAutomatonStates: 699, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 56.9s InterpolantComputationTime, 9061 NumberOfCodeBlocks, 9029 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 12675 ConstructedInterpolants, 172 QuantifiedInterpolants, 61850 SizeOfPredicates, 399 NumberOfNonLiveVariables, 9919 ConjunctsInSsa, 809 ConjunctsInUnsatCore, 70 InterpolantComputations, 10 PerfectInterpolantSequences, 368/816 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown