/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.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.positions.where.we.compute.the.hoare.annotation All -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.empire2-owicki-f61efc6-m [2025-03-14 23:19:54,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 23:19:54,862 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 [2025-03-14 23:19:54,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 23:19:54,912 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 23:19:54,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 23:19:54,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 23:19:54,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 23:19:54,913 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 23:19:54,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 23:19:54,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 23:19:54,914 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 23:19:54,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 23:19:54,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 23:19:54,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 23:19:54,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 23:19:54,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 23:19:54,914 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 23:19:54,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * To the following directory=./dump/ [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-14 23:19:54,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 23:19:54,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2025-03-14 23:19:55,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 23:19:55,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 23:19:55,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 23:19:55,178 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 23:19:55,178 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 23:19:55,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2025-03-14 23:19:56,381 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c7162ff/acb15c256a9a4d16944e6c8e034e5e61/FLAG49f20b1cb [2025-03-14 23:19:56,554 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 23:19:56,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2025-03-14 23:19:56,563 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c7162ff/acb15c256a9a4d16944e6c8e034e5e61/FLAG49f20b1cb [2025-03-14 23:19:56,577 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56c7162ff/acb15c256a9a4d16944e6c8e034e5e61 [2025-03-14 23:19:56,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 23:19:56,581 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-03-14 23:19:56,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 23:19:56,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 23:19:56,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 23:19:56,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adfe4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56, skipping insertion in model container [2025-03-14 23:19:56,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 23:19:56,725 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2722,2735] [2025-03-14 23:19:56,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 23:19:56,747 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 23:19:56,766 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2722,2735] [2025-03-14 23:19:56,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 23:19:56,779 INFO L204 MainTranslator]: Completed translation [2025-03-14 23:19:56,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56 WrapperNode [2025-03-14 23:19:56,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 23:19:56,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 23:19:56,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 23:19:56,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 23:19:56,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,806 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 140 [2025-03-14 23:19:56,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 23:19:56,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 23:19:56,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 23:19:56,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 23:19:56,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,814 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,825 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 23:19:56,835 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-14 23:19:56,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-14 23:19:56,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-14 23:19:56,835 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (1/1) ... [2025-03-14 23:19:56,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-14 23:19:56,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:19:56,860 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) [2025-03-14 23:19:56,865 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 [2025-03-14 23:19:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 23:19:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 23:19:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 23:19:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 23:19:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 23:19:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-14 23:19:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-14 23:19:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-14 23:19:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-14 23:19:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-14 23:19:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 23:19:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 23:19:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-14 23:19:56,882 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 23:19:56,947 INFO L234 CfgBuilder]: Building ICFG [2025-03-14 23:19:56,949 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 23:19:57,181 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 23:19:57,181 INFO L283 CfgBuilder]: Performing block encoding [2025-03-14 23:19:57,269 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 23:19:57,269 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-14 23:19:57,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.03 11:19:57 BoogieIcfgContainer [2025-03-14 23:19:57,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-14 23:19:57,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 23:19:57,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 23:19:57,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 23:19:57,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 11:19:56" (1/3) ... [2025-03-14 23:19:57,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bd8b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 11:19:57, skipping insertion in model container [2025-03-14 23:19:57,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 11:19:56" (2/3) ... [2025-03-14 23:19:57,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bd8b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 11:19:57, skipping insertion in model container [2025-03-14 23:19:57,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.03 11:19:57" (3/3) ... [2025-03-14 23:19:57,277 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2025-03-14 23:19:57,288 INFO L303 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 23:19:57,289 INFO L169 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-queue-add-2.wvr.c that has 3 procedures, 121 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-14 23:19:57,290 INFO L581 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 23:19:57,323 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-14 23:19:57,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 23:19:57,366 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@475ad64a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 23:19:57,366 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-14 23:19:57,414 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 23:19:57,414 INFO L124 PetriNetUnfolderBase]: 8/120 cut-off events. [2025-03-14 23:19:57,417 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 23:19:57,417 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:19:57,417 INFO L221 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] [2025-03-14 23:19:57,418 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:19:57,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:19:57,422 INFO L85 PathProgramCache]: Analyzing trace with hash 966705097, now seen corresponding path program 1 times [2025-03-14 23:19:57,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:19:57,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402055367] [2025-03-14 23:19:57,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 23:19:57,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:19:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:19:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:19:57,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:19:57,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402055367] [2025-03-14 23:19:57,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402055367] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 23:19:57,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 23:19:57,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 23:19:57,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211750331] [2025-03-14 23:19:57,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 23:19:57,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-14 23:19:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:19:57,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-14 23:19:57,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-14 23:19:57,639 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 128 [2025-03-14 23:19:57,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 128 transitions, 270 flow. Second operand has 2 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 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) [2025-03-14 23:19:57,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:19:57,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 128 [2025-03-14 23:19:57,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:19:57,700 INFO L124 PetriNetUnfolderBase]: 12/146 cut-off events. [2025-03-14 23:19:57,700 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-03-14 23:19:57,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 146 events. 12/146 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 169 event pairs, 5 based on Foata normal form. 5/140 useless extension candidates. Maximal degree in co-relation 100. Up to 22 conditions per place. [2025-03-14 23:19:57,705 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 7 selfloop transitions, 0 changer transitions 4/116 dead transitions. [2025-03-14 23:19:57,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 116 transitions, 258 flow [2025-03-14 23:19:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-14 23:19:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-14 23:19:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 243 transitions. [2025-03-14 23:19:57,718 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.94921875 [2025-03-14 23:19:57,723 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, -6 predicate places. [2025-03-14 23:19:57,723 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 116 transitions, 258 flow [2025-03-14 23:19:57,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 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) [2025-03-14 23:19:57,723 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:19:57,723 INFO L221 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] [2025-03-14 23:19:57,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 23:19:57,723 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:19:57,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:19:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash -285189388, now seen corresponding path program 1 times [2025-03-14 23:19:57,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:19:57,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065396998] [2025-03-14 23:19:57,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 23:19:57,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:19:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:19:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:19:57,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:19:57,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065396998] [2025-03-14 23:19:57,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065396998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 23:19:57,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 23:19:57,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 23:19:57,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920337396] [2025-03-14 23:19:57,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 23:19:57,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 23:19:57,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:19:57,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 23:19:57,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 23:19:57,962 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 128 [2025-03-14 23:19:57,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 116 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2025-03-14 23:19:57,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:19:57,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 128 [2025-03-14 23:19:57,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:19:58,028 INFO L124 PetriNetUnfolderBase]: 12/145 cut-off events. [2025-03-14 23:19:58,028 INFO L125 PetriNetUnfolderBase]: For 29/35 co-relation queries the response was YES. [2025-03-14 23:19:58,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 145 events. 12/145 cut-off events. For 29/35 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 149 event pairs, 1 based on Foata normal form. 1/136 useless extension candidates. Maximal degree in co-relation 116. Up to 22 conditions per place. [2025-03-14 23:19:58,029 INFO L140 encePairwiseOnDemand]: 124/128 looper letters, 11 selfloop transitions, 3 changer transitions 4/119 dead transitions. [2025-03-14 23:19:58,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 301 flow [2025-03-14 23:19:58,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 23:19:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 23:19:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2025-03-14 23:19:58,034 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.90625 [2025-03-14 23:19:58,034 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, -4 predicate places. [2025-03-14 23:19:58,034 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 301 flow [2025-03-14 23:19:58,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2025-03-14 23:19:58,034 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:19:58,035 INFO L221 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] [2025-03-14 23:19:58,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 23:19:58,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:19:58,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:19:58,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1310262366, now seen corresponding path program 2 times [2025-03-14 23:19:58,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:19:58,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59958312] [2025-03-14 23:19:58,036 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 23:19:58,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:19:58,060 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 23:19:58,061 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:19:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:19:58,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:19:58,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59958312] [2025-03-14 23:19:58,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59958312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 23:19:58,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 23:19:58,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-14 23:19:58,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364752848] [2025-03-14 23:19:58,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 23:19:58,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-14 23:19:58,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:19:58,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-14 23:19:58,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-14 23:19:58,237 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 128 [2025-03-14 23:19:58,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 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) [2025-03-14 23:19:58,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:19:58,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 128 [2025-03-14 23:19:58,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:19:58,392 INFO L124 PetriNetUnfolderBase]: 13/194 cut-off events. [2025-03-14 23:19:58,392 INFO L125 PetriNetUnfolderBase]: For 98/118 co-relation queries the response was YES. [2025-03-14 23:19:58,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 194 events. 13/194 cut-off events. For 98/118 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 275 event pairs, 1 based on Foata normal form. 4/181 useless extension candidates. Maximal degree in co-relation 187. Up to 26 conditions per place. [2025-03-14 23:19:58,393 INFO L140 encePairwiseOnDemand]: 116/128 looper letters, 23 selfloop transitions, 8 changer transitions 10/129 dead transitions. [2025-03-14 23:19:58,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 129 transitions, 409 flow [2025-03-14 23:19:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-14 23:19:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-14 23:19:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 918 transitions. [2025-03-14 23:19:58,397 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.796875 [2025-03-14 23:19:58,397 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 4 predicate places. [2025-03-14 23:19:58,397 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 409 flow [2025-03-14 23:19:58,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.16666666666667) internal successors, (607), 6 states have internal predecessors, (607), 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) [2025-03-14 23:19:58,398 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:19:58,398 INFO L221 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] [2025-03-14 23:19:58,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 23:19:58,398 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:19:58,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:19:58,399 INFO L85 PathProgramCache]: Analyzing trace with hash 2038911962, now seen corresponding path program 1 times [2025-03-14 23:19:58,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:19:58,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8662916] [2025-03-14 23:19:58,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 23:19:58,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:19:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:19:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 23:19:58,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:19:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8662916] [2025-03-14 23:19:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8662916] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 23:19:58,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 23:19:58,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-14 23:19:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542838584] [2025-03-14 23:19:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 23:19:58,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 23:19:58,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:19:58,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 23:19:58,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-14 23:19:58,852 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 128 [2025-03-14 23:19:58,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 409 flow. Second operand has 12 states, 12 states have (on average 77.25) internal successors, (927), 12 states have internal predecessors, (927), 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) [2025-03-14 23:19:58,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:19:58,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 128 [2025-03-14 23:19:58,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:19:59,111 INFO L124 PetriNetUnfolderBase]: 100/391 cut-off events. [2025-03-14 23:19:59,111 INFO L125 PetriNetUnfolderBase]: For 555/631 co-relation queries the response was YES. [2025-03-14 23:19:59,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 391 events. 100/391 cut-off events. For 555/631 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1370 event pairs, 17 based on Foata normal form. 2/357 useless extension candidates. Maximal degree in co-relation 567. Up to 84 conditions per place. [2025-03-14 23:19:59,117 INFO L140 encePairwiseOnDemand]: 108/128 looper letters, 64 selfloop transitions, 14 changer transitions 20/170 dead transitions. [2025-03-14 23:19:59,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 170 transitions, 832 flow [2025-03-14 23:19:59,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-14 23:19:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-14 23:19:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1271 transitions. [2025-03-14 23:19:59,121 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.62060546875 [2025-03-14 23:19:59,121 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 19 predicate places. [2025-03-14 23:19:59,121 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 170 transitions, 832 flow [2025-03-14 23:19:59,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 77.25) internal successors, (927), 12 states have internal predecessors, (927), 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) [2025-03-14 23:19:59,123 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:19:59,123 INFO L221 CegarLoopForPetriNet]: trace histogram [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] [2025-03-14 23:19:59,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 23:19:59,123 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:19:59,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:19:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash -869018185, now seen corresponding path program 1 times [2025-03-14 23:19:59,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:19:59,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223954881] [2025-03-14 23:19:59,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 23:19:59,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:19:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:19:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 23:19:59,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:19:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223954881] [2025-03-14 23:19:59,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223954881] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 23:19:59,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 23:19:59,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-14 23:19:59,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936404979] [2025-03-14 23:19:59,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 23:19:59,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-14 23:19:59,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:19:59,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-14 23:19:59,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-14 23:19:59,228 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 128 [2025-03-14 23:19:59,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 170 transitions, 832 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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) [2025-03-14 23:19:59,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:19:59,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 128 [2025-03-14 23:19:59,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:19:59,314 INFO L124 PetriNetUnfolderBase]: 182/615 cut-off events. [2025-03-14 23:19:59,314 INFO L125 PetriNetUnfolderBase]: For 1476/1582 co-relation queries the response was YES. [2025-03-14 23:19:59,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 615 events. 182/615 cut-off events. For 1476/1582 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2786 event pairs, 21 based on Foata normal form. 18/566 useless extension candidates. Maximal degree in co-relation 1130. Up to 228 conditions per place. [2025-03-14 23:19:59,319 INFO L140 encePairwiseOnDemand]: 124/128 looper letters, 23 selfloop transitions, 13 changer transitions 34/186 dead transitions. [2025-03-14 23:19:59,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 186 transitions, 1115 flow [2025-03-14 23:19:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-14 23:19:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-14 23:19:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 467 transitions. [2025-03-14 23:19:59,321 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.912109375 [2025-03-14 23:19:59,321 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 22 predicate places. [2025-03-14 23:19:59,321 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 186 transitions, 1115 flow [2025-03-14 23:19:59,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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) [2025-03-14 23:19:59,322 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:19:59,322 INFO L221 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] [2025-03-14 23:19:59,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 23:19:59,322 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:19:59,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:19:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1517652712, now seen corresponding path program 1 times [2025-03-14 23:19:59,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:19:59,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784989557] [2025-03-14 23:19:59,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 23:19:59,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:19:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:19:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:19:59,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:19:59,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784989557] [2025-03-14 23:19:59,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784989557] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:19:59,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372939422] [2025-03-14 23:19:59,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 23:19:59,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:19:59,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:19:59,512 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) [2025-03-14 23:19:59,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 23:19:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:19:59,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-14 23:19:59,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:19:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:19:59,770 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:20:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:00,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372939422] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:20:00,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:20:00,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-03-14 23:20:00,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106174168] [2025-03-14 23:20:00,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:20:00,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-14 23:20:00,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:00,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-14 23:20:00,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2025-03-14 23:20:00,010 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 128 [2025-03-14 23:20:00,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 186 transitions, 1115 flow. Second operand has 19 states, 19 states have (on average 97.6842105263158) internal successors, (1856), 19 states have internal predecessors, (1856), 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) [2025-03-14 23:20:00,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:00,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 128 [2025-03-14 23:20:00,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:00,304 INFO L124 PetriNetUnfolderBase]: 229/798 cut-off events. [2025-03-14 23:20:00,304 INFO L125 PetriNetUnfolderBase]: For 2761/2929 co-relation queries the response was YES. [2025-03-14 23:20:00,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 798 events. 229/798 cut-off events. For 2761/2929 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3948 event pairs, 46 based on Foata normal form. 23/732 useless extension candidates. Maximal degree in co-relation 1224. Up to 261 conditions per place. [2025-03-14 23:20:00,308 INFO L140 encePairwiseOnDemand]: 113/128 looper letters, 48 selfloop transitions, 13 changer transitions 56/213 dead transitions. [2025-03-14 23:20:00,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 213 transitions, 1608 flow [2025-03-14 23:20:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-14 23:20:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-14 23:20:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1766 transitions. [2025-03-14 23:20:00,311 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.7664930555555556 [2025-03-14 23:20:00,312 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 39 predicate places. [2025-03-14 23:20:00,312 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 213 transitions, 1608 flow [2025-03-14 23:20:00,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 97.6842105263158) internal successors, (1856), 19 states have internal predecessors, (1856), 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) [2025-03-14 23:20:00,313 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:00,313 INFO L221 CegarLoopForPetriNet]: trace histogram [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] [2025-03-14 23:20:00,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-14 23:20:00,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-14 23:20:00,513 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:00,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2147354206, now seen corresponding path program 2 times [2025-03-14 23:20:00,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:00,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629791281] [2025-03-14 23:20:00,514 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 23:20:00,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:00,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 23:20:00,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:00,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:00,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629791281] [2025-03-14 23:20:00,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629791281] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 23:20:00,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 23:20:00,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 23:20:00,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33059507] [2025-03-14 23:20:00,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 23:20:00,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 23:20:00,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:00,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 23:20:00,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-14 23:20:00,619 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 128 [2025-03-14 23:20:00,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 213 transitions, 1608 flow. Second operand has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 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) [2025-03-14 23:20:00,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:00,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 128 [2025-03-14 23:20:00,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:00,761 INFO L124 PetriNetUnfolderBase]: 264/874 cut-off events. [2025-03-14 23:20:00,762 INFO L125 PetriNetUnfolderBase]: For 3857/4085 co-relation queries the response was YES. [2025-03-14 23:20:00,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3102 conditions, 874 events. 264/874 cut-off events. For 3857/4085 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4335 event pairs, 56 based on Foata normal form. 30/816 useless extension candidates. Maximal degree in co-relation 1755. Up to 334 conditions per place. [2025-03-14 23:20:00,767 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 61 selfloop transitions, 7 changer transitions 57/232 dead transitions. [2025-03-14 23:20:00,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 232 transitions, 2057 flow [2025-03-14 23:20:00,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 23:20:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 23:20:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2025-03-14 23:20:00,769 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.8546875 [2025-03-14 23:20:00,770 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 43 predicate places. [2025-03-14 23:20:00,770 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 232 transitions, 2057 flow [2025-03-14 23:20:00,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 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) [2025-03-14 23:20:00,771 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:00,771 INFO L221 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] [2025-03-14 23:20:00,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-14 23:20:00,771 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:00,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash -640210453, now seen corresponding path program 1 times [2025-03-14 23:20:00,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592337899] [2025-03-14 23:20:00,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 23:20:00,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:20:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:02,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:02,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592337899] [2025-03-14 23:20:02,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592337899] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:20:02,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987555450] [2025-03-14 23:20:02,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 23:20:02,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:02,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:20:02,045 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) [2025-03-14 23:20:02,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 23:20:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:20:02,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-14 23:20:02,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:20:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:03,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:20:03,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:20:03,460 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 37 treesize of output 21 [2025-03-14 23:20:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:04,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987555450] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:20:04,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:20:04,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 25] total 70 [2025-03-14 23:20:04,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358036934] [2025-03-14 23:20:04,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:20:04,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-03-14 23:20:04,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:04,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-03-14 23:20:04,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=4378, Unknown=0, NotChecked=0, Total=4830 [2025-03-14 23:20:04,368 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 128 [2025-03-14 23:20:04,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 232 transitions, 2057 flow. Second operand has 70 states, 70 states have (on average 44.042857142857144) internal successors, (3083), 70 states have internal predecessors, (3083), 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) [2025-03-14 23:20:04,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:04,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 128 [2025-03-14 23:20:04,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:12,265 INFO L124 PetriNetUnfolderBase]: 815/2226 cut-off events. [2025-03-14 23:20:12,266 INFO L125 PetriNetUnfolderBase]: For 12129/12777 co-relation queries the response was YES. [2025-03-14 23:20:12,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10195 conditions, 2226 events. 815/2226 cut-off events. For 12129/12777 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 14794 event pairs, 19 based on Foata normal form. 141/2177 useless extension candidates. Maximal degree in co-relation 6323. Up to 1132 conditions per place. [2025-03-14 23:20:12,279 INFO L140 encePairwiseOnDemand]: 84/128 looper letters, 341 selfloop transitions, 277 changer transitions 162/816 dead transitions. [2025-03-14 23:20:12,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 816 transitions, 9389 flow [2025-03-14 23:20:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2025-03-14 23:20:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2025-03-14 23:20:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 6340 transitions. [2025-03-14 23:20:12,293 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.35379464285714285 [2025-03-14 23:20:12,293 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 182 predicate places. [2025-03-14 23:20:12,294 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 816 transitions, 9389 flow [2025-03-14 23:20:12,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 44.042857142857144) internal successors, (3083), 70 states have internal predecessors, (3083), 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) [2025-03-14 23:20:12,295 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:12,295 INFO L221 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] [2025-03-14 23:20:12,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-14 23:20:12,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-14 23:20:12,495 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:12,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1392505879, now seen corresponding path program 2 times [2025-03-14 23:20:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:12,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825824353] [2025-03-14 23:20:12,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 23:20:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:12,522 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 23:20:12,522 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:13,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:13,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825824353] [2025-03-14 23:20:13,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825824353] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:20:13,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890860781] [2025-03-14 23:20:13,372 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 23:20:13,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:13,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:20:13,374 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) [2025-03-14 23:20:13,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-14 23:20:13,439 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 23:20:13,439 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:13,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-03-14 23:20:13,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:20:13,981 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 12 treesize of output 3 [2025-03-14 23:20:14,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:14,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:20:14,379 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:20:14,380 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 26 treesize of output 18 [2025-03-14 23:20:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:15,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890860781] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:20:15,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:20:15,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 24] total 65 [2025-03-14 23:20:15,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934017087] [2025-03-14 23:20:15,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:20:15,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-03-14 23:20:15,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:15,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-03-14 23:20:15,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=3534, Unknown=0, NotChecked=0, Total=4160 [2025-03-14 23:20:15,342 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 128 [2025-03-14 23:20:15,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 816 transitions, 9389 flow. Second operand has 65 states, 65 states have (on average 44.01538461538462) internal successors, (2861), 65 states have internal predecessors, (2861), 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) [2025-03-14 23:20:15,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:15,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 128 [2025-03-14 23:20:15,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:22,846 INFO L124 PetriNetUnfolderBase]: 946/2769 cut-off events. [2025-03-14 23:20:22,846 INFO L125 PetriNetUnfolderBase]: For 15768/16538 co-relation queries the response was YES. [2025-03-14 23:20:22,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14711 conditions, 2769 events. 946/2769 cut-off events. For 15768/16538 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 20186 event pairs, 16 based on Foata normal form. 248/2759 useless extension candidates. Maximal degree in co-relation 8903. Up to 1618 conditions per place. [2025-03-14 23:20:22,859 INFO L140 encePairwiseOnDemand]: 81/128 looper letters, 329 selfloop transitions, 344 changer transitions 431/1140 dead transitions. [2025-03-14 23:20:22,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1140 transitions, 15094 flow [2025-03-14 23:20:22,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2025-03-14 23:20:22,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2025-03-14 23:20:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 8423 transitions. [2025-03-14 23:20:22,866 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.3500249335106383 [2025-03-14 23:20:22,867 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 341 predicate places. [2025-03-14 23:20:22,867 INFO L471 AbstractCegarLoop]: Abstraction has has 468 places, 1140 transitions, 15094 flow [2025-03-14 23:20:22,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 44.01538461538462) internal successors, (2861), 65 states have internal predecessors, (2861), 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) [2025-03-14 23:20:22,868 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:22,868 INFO L221 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] [2025-03-14 23:20:22,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-14 23:20:23,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:23,072 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:23,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash -962083663, now seen corresponding path program 3 times [2025-03-14 23:20:23,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:23,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240161339] [2025-03-14 23:20:23,073 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 23:20:23,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:23,096 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 23:20:23,096 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:23,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:23,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240161339] [2025-03-14 23:20:23,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240161339] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:20:23,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717744677] [2025-03-14 23:20:23,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 23:20:23,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:23,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:20:23,340 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) [2025-03-14 23:20:23,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-14 23:20:23,403 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 23:20:23,404 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:23,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-14 23:20:23,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:20:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:23,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:20:23,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:20:23,779 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 37 treesize of output 21 [2025-03-14 23:20:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:23,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717744677] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:20:23,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:20:23,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2025-03-14 23:20:23,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578033587] [2025-03-14 23:20:23,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:20:23,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-14 23:20:23,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:23,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-14 23:20:23,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2025-03-14 23:20:23,964 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 128 [2025-03-14 23:20:23,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1140 transitions, 15094 flow. Second operand has 29 states, 29 states have (on average 66.72413793103448) internal successors, (1935), 29 states have internal predecessors, (1935), 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) [2025-03-14 23:20:23,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:23,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 128 [2025-03-14 23:20:23,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:25,272 INFO L124 PetriNetUnfolderBase]: 1074/3218 cut-off events. [2025-03-14 23:20:25,272 INFO L125 PetriNetUnfolderBase]: For 18350/19204 co-relation queries the response was YES. [2025-03-14 23:20:25,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19441 conditions, 3218 events. 1074/3218 cut-off events. For 18350/19204 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 24788 event pairs, 15 based on Foata normal form. 187/3108 useless extension candidates. Maximal degree in co-relation 11134. Up to 1917 conditions per place. [2025-03-14 23:20:25,293 INFO L140 encePairwiseOnDemand]: 102/128 looper letters, 534 selfloop transitions, 264 changer transitions 540/1414 dead transitions. [2025-03-14 23:20:25,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 1414 transitions, 21091 flow [2025-03-14 23:20:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-03-14 23:20:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2025-03-14 23:20:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2975 transitions. [2025-03-14 23:20:25,296 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.540515988372093 [2025-03-14 23:20:25,296 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 383 predicate places. [2025-03-14 23:20:25,296 INFO L471 AbstractCegarLoop]: Abstraction has has 510 places, 1414 transitions, 21091 flow [2025-03-14 23:20:25,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 66.72413793103448) internal successors, (1935), 29 states have internal predecessors, (1935), 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) [2025-03-14 23:20:25,297 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:25,297 INFO L221 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] [2025-03-14 23:20:25,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-14 23:20:25,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:25,498 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:25,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1622740269, now seen corresponding path program 4 times [2025-03-14 23:20:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:25,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327060545] [2025-03-14 23:20:25,498 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 23:20:25,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:25,518 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2025-03-14 23:20:25,518 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:26,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:26,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327060545] [2025-03-14 23:20:26,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327060545] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:20:26,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146732558] [2025-03-14 23:20:26,344 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 23:20:26,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:26,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:20:26,346 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) [2025-03-14 23:20:26,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-14 23:20:26,398 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2025-03-14 23:20:26,398 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:26,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-14 23:20:26,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:20:26,894 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 12 treesize of output 3 [2025-03-14 23:20:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:27,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:20:27,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:20:27,295 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 26 treesize of output 18 [2025-03-14 23:20:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:28,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146732558] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:20:28,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:20:28,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 63 [2025-03-14 23:20:28,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816735413] [2025-03-14 23:20:28,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:20:28,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-03-14 23:20:28,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:28,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-03-14 23:20:28,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=3394, Unknown=0, NotChecked=0, Total=3906 [2025-03-14 23:20:28,028 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 128 [2025-03-14 23:20:28,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 1414 transitions, 21091 flow. Second operand has 63 states, 63 states have (on average 52.04761904761905) internal successors, (3279), 63 states have internal predecessors, (3279), 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) [2025-03-14 23:20:28,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:28,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 128 [2025-03-14 23:20:28,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:33,339 INFO L124 PetriNetUnfolderBase]: 1307/3904 cut-off events. [2025-03-14 23:20:33,339 INFO L125 PetriNetUnfolderBase]: For 23351/24304 co-relation queries the response was YES. [2025-03-14 23:20:33,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26764 conditions, 3904 events. 1307/3904 cut-off events. For 23351/24304 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 31775 event pairs, 12 based on Foata normal form. 231/3768 useless extension candidates. Maximal degree in co-relation 16254. Up to 2461 conditions per place. [2025-03-14 23:20:33,363 INFO L140 encePairwiseOnDemand]: 89/128 looper letters, 525 selfloop transitions, 472 changer transitions 838/1881 dead transitions. [2025-03-14 23:20:33,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 1881 transitions, 30846 flow [2025-03-14 23:20:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2025-03-14 23:20:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2025-03-14 23:20:33,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 7657 transitions. [2025-03-14 23:20:33,368 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.4125538793103448 [2025-03-14 23:20:33,369 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 527 predicate places. [2025-03-14 23:20:33,369 INFO L471 AbstractCegarLoop]: Abstraction has has 654 places, 1881 transitions, 30846 flow [2025-03-14 23:20:33,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 52.04761904761905) internal successors, (3279), 63 states have internal predecessors, (3279), 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) [2025-03-14 23:20:33,370 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:33,370 INFO L221 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] [2025-03-14 23:20:33,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-14 23:20:33,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-14 23:20:33,574 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:33,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2069073491, now seen corresponding path program 5 times [2025-03-14 23:20:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:33,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334186222] [2025-03-14 23:20:33,575 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 23:20:33,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:33,595 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-14 23:20:33,595 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 23:20:34,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334186222] [2025-03-14 23:20:34,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334186222] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:20:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30140488] [2025-03-14 23:20:34,076 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 23:20:34,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:20:34,078 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) [2025-03-14 23:20:34,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-14 23:20:34,136 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-14 23:20:34,136 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:34,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-14 23:20:34,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:20:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:34,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:20:34,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:20:34,704 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 26 treesize of output 18 [2025-03-14 23:20:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:35,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30140488] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:20:35,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:20:35,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 38 [2025-03-14 23:20:35,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345367953] [2025-03-14 23:20:35,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:20:35,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-14 23:20:35,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:35,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-14 23:20:35,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1234, Unknown=0, NotChecked=0, Total=1406 [2025-03-14 23:20:35,079 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 128 [2025-03-14 23:20:35,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 1881 transitions, 30846 flow. Second operand has 38 states, 38 states have (on average 56.55263157894737) internal successors, (2149), 38 states have internal predecessors, (2149), 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) [2025-03-14 23:20:35,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:35,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 128 [2025-03-14 23:20:35,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:37,436 INFO L124 PetriNetUnfolderBase]: 1477/4336 cut-off events. [2025-03-14 23:20:37,436 INFO L125 PetriNetUnfolderBase]: For 28029/29060 co-relation queries the response was YES. [2025-03-14 23:20:37,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33613 conditions, 4336 events. 1477/4336 cut-off events. For 28029/29060 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 36190 event pairs, 11 based on Foata normal form. 216/4164 useless extension candidates. Maximal degree in co-relation 19261. Up to 2810 conditions per place. [2025-03-14 23:20:37,464 INFO L140 encePairwiseOnDemand]: 94/128 looper letters, 725 selfloop transitions, 490 changer transitions 925/2191 dead transitions. [2025-03-14 23:20:37,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 2191 transitions, 40041 flow [2025-03-14 23:20:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-03-14 23:20:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2025-03-14 23:20:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 3153 transitions. [2025-03-14 23:20:37,467 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.4398716517857143 [2025-03-14 23:20:37,467 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 582 predicate places. [2025-03-14 23:20:37,467 INFO L471 AbstractCegarLoop]: Abstraction has has 709 places, 2191 transitions, 40041 flow [2025-03-14 23:20:37,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 56.55263157894737) internal successors, (2149), 38 states have internal predecessors, (2149), 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) [2025-03-14 23:20:37,468 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:37,468 INFO L221 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] [2025-03-14 23:20:37,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-14 23:20:37,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:37,669 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:37,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:37,670 INFO L85 PathProgramCache]: Analyzing trace with hash -811533741, now seen corresponding path program 6 times [2025-03-14 23:20:37,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:37,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386707589] [2025-03-14 23:20:37,670 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 23:20:37,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:37,687 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 23:20:37,687 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:37,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:37,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386707589] [2025-03-14 23:20:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386707589] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 23:20:37,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 23:20:37,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-14 23:20:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834597797] [2025-03-14 23:20:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 23:20:37,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-14 23:20:37,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:37,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-14 23:20:37,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2025-03-14 23:20:37,920 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 128 [2025-03-14 23:20:37,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 2191 transitions, 40041 flow. Second operand has 16 states, 16 states have (on average 67.5) internal successors, (1080), 16 states have internal predecessors, (1080), 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) [2025-03-14 23:20:37,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:37,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 128 [2025-03-14 23:20:37,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:39,282 INFO L124 PetriNetUnfolderBase]: 1503/4435 cut-off events. [2025-03-14 23:20:39,282 INFO L125 PetriNetUnfolderBase]: For 32190/33333 co-relation queries the response was YES. [2025-03-14 23:20:39,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38340 conditions, 4435 events. 1503/4435 cut-off events. For 32190/33333 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 37505 event pairs, 11 based on Foata normal form. 193/4235 useless extension candidates. Maximal degree in co-relation 21952. Up to 2980 conditions per place. [2025-03-14 23:20:39,314 INFO L140 encePairwiseOnDemand]: 105/128 looper letters, 1089 selfloop transitions, 105 changer transitions 990/2260 dead transitions. [2025-03-14 23:20:39,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 2260 transitions, 45794 flow [2025-03-14 23:20:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-14 23:20:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-14 23:20:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1532 transitions. [2025-03-14 23:20:39,316 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.5440340909090909 [2025-03-14 23:20:39,317 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 603 predicate places. [2025-03-14 23:20:39,317 INFO L471 AbstractCegarLoop]: Abstraction has has 730 places, 2260 transitions, 45794 flow [2025-03-14 23:20:39,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 67.5) internal successors, (1080), 16 states have internal predecessors, (1080), 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) [2025-03-14 23:20:39,318 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:39,318 INFO L221 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] [2025-03-14 23:20:39,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-14 23:20:39,318 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:39,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:39,319 INFO L85 PathProgramCache]: Analyzing trace with hash -277815517, now seen corresponding path program 7 times [2025-03-14 23:20:39,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:39,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753534081] [2025-03-14 23:20:39,319 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 23:20:39,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:20:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:40,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:40,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753534081] [2025-03-14 23:20:40,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753534081] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:20:40,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878205339] [2025-03-14 23:20:40,150 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 23:20:40,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:40,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:20:40,152 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) [2025-03-14 23:20:40,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-14 23:20:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:20:40,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-14 23:20:40,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:20:40,683 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 12 treesize of output 3 [2025-03-14 23:20:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:40,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:20:41,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:20:41,173 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 37 treesize of output 21 [2025-03-14 23:20:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:42,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878205339] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:20:42,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:20:42,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 25, 25] total 70 [2025-03-14 23:20:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27785977] [2025-03-14 23:20:42,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:20:42,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-03-14 23:20:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:42,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-03-14 23:20:42,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=4328, Unknown=0, NotChecked=0, Total=4830 [2025-03-14 23:20:42,009 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 128 [2025-03-14 23:20:42,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 2260 transitions, 45794 flow. Second operand has 70 states, 70 states have (on average 44.042857142857144) internal successors, (3083), 70 states have internal predecessors, (3083), 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) [2025-03-14 23:20:42,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:42,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 128 [2025-03-14 23:20:42,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:50,041 INFO L124 PetriNetUnfolderBase]: 1623/4901 cut-off events. [2025-03-14 23:20:50,041 INFO L125 PetriNetUnfolderBase]: For 39447/40925 co-relation queries the response was YES. [2025-03-14 23:20:50,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46296 conditions, 4901 events. 1623/4901 cut-off events. For 39447/40925 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 43239 event pairs, 10 based on Foata normal form. 279/4723 useless extension candidates. Maximal degree in co-relation 27592. Up to 3361 conditions per place. [2025-03-14 23:20:50,070 INFO L140 encePairwiseOnDemand]: 84/128 looper letters, 659 selfloop transitions, 665 changer transitions 1255/2615 dead transitions. [2025-03-14 23:20:50,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 889 places, 2615 transitions, 57727 flow [2025-03-14 23:20:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2025-03-14 23:20:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2025-03-14 23:20:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 7153 transitions. [2025-03-14 23:20:50,075 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.349267578125 [2025-03-14 23:20:50,075 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 762 predicate places. [2025-03-14 23:20:50,075 INFO L471 AbstractCegarLoop]: Abstraction has has 889 places, 2615 transitions, 57727 flow [2025-03-14 23:20:50,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 44.042857142857144) internal successors, (3083), 70 states have internal predecessors, (3083), 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) [2025-03-14 23:20:50,076 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:50,076 INFO L221 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] [2025-03-14 23:20:50,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-14 23:20:50,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:50,277 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:50,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1956714653, now seen corresponding path program 8 times [2025-03-14 23:20:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:50,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142761788] [2025-03-14 23:20:50,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 23:20:50,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:50,291 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 23:20:50,292 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:50,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:50,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142761788] [2025-03-14 23:20:50,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142761788] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 23:20:50,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 23:20:50,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-14 23:20:50,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508869498] [2025-03-14 23:20:50,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 23:20:50,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-14 23:20:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:50,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-14 23:20:50,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2025-03-14 23:20:50,510 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 128 [2025-03-14 23:20:50,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 2615 transitions, 57727 flow. Second operand has 16 states, 16 states have (on average 67.5) internal successors, (1080), 16 states have internal predecessors, (1080), 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) [2025-03-14 23:20:50,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:50,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 128 [2025-03-14 23:20:50,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:52,281 INFO L124 PetriNetUnfolderBase]: 1628/4929 cut-off events. [2025-03-14 23:20:52,282 INFO L125 PetriNetUnfolderBase]: For 42674/44066 co-relation queries the response was YES. [2025-03-14 23:20:52,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50762 conditions, 4929 events. 1628/4929 cut-off events. For 42674/44066 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 43747 event pairs, 10 based on Foata normal form. 168/4639 useless extension candidates. Maximal degree in co-relation 30591. Up to 3381 conditions per place. [2025-03-14 23:20:52,310 INFO L140 encePairwiseOnDemand]: 105/128 looper letters, 1149 selfloop transitions, 93 changer transitions 1321/2639 dead transitions. [2025-03-14 23:20:52,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 909 places, 2639 transitions, 63437 flow [2025-03-14 23:20:52,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-14 23:20:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-14 23:20:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1463 transitions. [2025-03-14 23:20:52,312 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2025-03-14 23:20:52,312 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 782 predicate places. [2025-03-14 23:20:52,312 INFO L471 AbstractCegarLoop]: Abstraction has has 909 places, 2639 transitions, 63437 flow [2025-03-14 23:20:52,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 67.5) internal successors, (1080), 16 states have internal predecessors, (1080), 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) [2025-03-14 23:20:52,313 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:52,313 INFO L221 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] [2025-03-14 23:20:52,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-14 23:20:52,313 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:52,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2040077507, now seen corresponding path program 9 times [2025-03-14 23:20:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:52,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026211951] [2025-03-14 23:20:52,314 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 23:20:52,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:52,329 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 23:20:52,330 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:52,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:52,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026211951] [2025-03-14 23:20:52,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026211951] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:20:52,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236478185] [2025-03-14 23:20:52,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 23:20:52,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:20:52,554 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) [2025-03-14 23:20:52,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-14 23:20:52,615 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-14 23:20:52,616 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:52,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-14 23:20:52,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:20:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:52,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:20:52,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:20:52,988 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 26 treesize of output 18 [2025-03-14 23:20:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-14 23:20:53,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236478185] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:20:53,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:20:53,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 29 [2025-03-14 23:20:53,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412376259] [2025-03-14 23:20:53,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:20:53,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-14 23:20:53,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:53,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-14 23:20:53,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2025-03-14 23:20:53,165 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 128 [2025-03-14 23:20:53,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 909 places, 2639 transitions, 63437 flow. Second operand has 29 states, 29 states have (on average 66.82758620689656) internal successors, (1938), 29 states have internal predecessors, (1938), 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) [2025-03-14 23:20:53,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:53,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 128 [2025-03-14 23:20:53,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:55,405 INFO L124 PetriNetUnfolderBase]: 1695/5077 cut-off events. [2025-03-14 23:20:55,405 INFO L125 PetriNetUnfolderBase]: For 48210/49837 co-relation queries the response was YES. [2025-03-14 23:20:55,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56830 conditions, 5077 events. 1695/5077 cut-off events. For 48210/49837 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 45058 event pairs, 11 based on Foata normal form. 218/4827 useless extension candidates. Maximal degree in co-relation 32578. Up to 3513 conditions per place. [2025-03-14 23:20:55,446 INFO L140 encePairwiseOnDemand]: 104/128 looper letters, 856 selfloop transitions, 444 changer transitions 1358/2734 dead transitions. [2025-03-14 23:20:55,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 2734 transitions, 71055 flow [2025-03-14 23:20:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-14 23:20:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-14 23:20:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2016 transitions. [2025-03-14 23:20:55,447 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2025-03-14 23:20:55,448 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 810 predicate places. [2025-03-14 23:20:55,448 INFO L471 AbstractCegarLoop]: Abstraction has has 937 places, 2734 transitions, 71055 flow [2025-03-14 23:20:55,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 66.82758620689656) internal successors, (1938), 29 states have internal predecessors, (1938), 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) [2025-03-14 23:20:55,449 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:55,449 INFO L221 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2025-03-14 23:20:55,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-14 23:20:55,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-14 23:20:55,650 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:55,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:55,650 INFO L85 PathProgramCache]: Analyzing trace with hash -651862232, now seen corresponding path program 10 times [2025-03-14 23:20:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861153333] [2025-03-14 23:20:55,651 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 23:20:55,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:55,661 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2025-03-14 23:20:55,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 23:20:55,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861153333] [2025-03-14 23:20:55,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861153333] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:20:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419497773] [2025-03-14 23:20:55,781 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 23:20:55,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:55,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:20:55,784 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) [2025-03-14 23:20:55,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-14 23:20:55,839 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2025-03-14 23:20:55,839 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:55,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-14 23:20:55,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:20:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 23:20:56,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:20:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 23:20:56,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419497773] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:20:56,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:20:56,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2025-03-14 23:20:56,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767955706] [2025-03-14 23:20:56,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:20:56,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-14 23:20:56,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:56,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-14 23:20:56,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2025-03-14 23:20:56,238 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 128 [2025-03-14 23:20:56,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 937 places, 2734 transitions, 71055 flow. Second operand has 31 states, 31 states have (on average 95.58064516129032) internal successors, (2963), 31 states have internal predecessors, (2963), 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) [2025-03-14 23:20:56,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:56,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 128 [2025-03-14 23:20:56,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:20:58,250 INFO L124 PetriNetUnfolderBase]: 1876/5792 cut-off events. [2025-03-14 23:20:58,250 INFO L125 PetriNetUnfolderBase]: For 65003/66407 co-relation queries the response was YES. [2025-03-14 23:20:58,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65498 conditions, 5792 events. 1876/5792 cut-off events. For 65003/66407 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 52991 event pairs, 8 based on Foata normal form. 188/5411 useless extension candidates. Maximal degree in co-relation 31490. Up to 4055 conditions per place. [2025-03-14 23:20:58,285 INFO L140 encePairwiseOnDemand]: 110/128 looper letters, 292 selfloop transitions, 221 changer transitions 1495/2838 dead transitions. [2025-03-14 23:20:58,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 2838 transitions, 76872 flow [2025-03-14 23:20:58,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-14 23:20:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-14 23:20:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2691 transitions. [2025-03-14 23:20:58,287 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.7508370535714286 [2025-03-14 23:20:58,287 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 835 predicate places. [2025-03-14 23:20:58,287 INFO L471 AbstractCegarLoop]: Abstraction has has 962 places, 2838 transitions, 76872 flow [2025-03-14 23:20:58,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 95.58064516129032) internal successors, (2963), 31 states have internal predecessors, (2963), 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) [2025-03-14 23:20:58,288 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:20:58,288 INFO L221 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2025-03-14 23:20:58,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-14 23:20:58,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-14 23:20:58,489 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:20:58,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:20:58,490 INFO L85 PathProgramCache]: Analyzing trace with hash -49197997, now seen corresponding path program 11 times [2025-03-14 23:20:58,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:20:58,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776736847] [2025-03-14 23:20:58,490 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 23:20:58,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:20:58,499 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-14 23:20:58,499 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 23:20:58,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:20:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776736847] [2025-03-14 23:20:58,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776736847] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:20:58,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915239775] [2025-03-14 23:20:58,601 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 23:20:58,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:20:58,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:20:58,603 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) [2025-03-14 23:20:58,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-14 23:20:58,661 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-14 23:20:58,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:20:58,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-14 23:20:58,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:20:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:58,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:20:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:20:59,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915239775] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:20:59,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:20:59,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 35 [2025-03-14 23:20:59,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301646048] [2025-03-14 23:20:59,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:20:59,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-14 23:20:59,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:20:59,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-14 23:20:59,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2025-03-14 23:20:59,374 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 128 [2025-03-14 23:20:59,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 962 places, 2838 transitions, 76872 flow. Second operand has 35 states, 35 states have (on average 95.65714285714286) internal successors, (3348), 35 states have internal predecessors, (3348), 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) [2025-03-14 23:20:59,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:20:59,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 128 [2025-03-14 23:20:59,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:21:01,199 INFO L124 PetriNetUnfolderBase]: 1512/4699 cut-off events. [2025-03-14 23:21:01,199 INFO L125 PetriNetUnfolderBase]: For 62381/63530 co-relation queries the response was YES. [2025-03-14 23:21:01,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54546 conditions, 4699 events. 1512/4699 cut-off events. For 62381/63530 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 40902 event pairs, 6 based on Foata normal form. 123/4389 useless extension candidates. Maximal degree in co-relation 20925. Up to 3189 conditions per place. [2025-03-14 23:21:01,238 INFO L140 encePairwiseOnDemand]: 110/128 looper letters, 327 selfloop transitions, 20 changer transitions 1579/2469 dead transitions. [2025-03-14 23:21:01,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 2469 transitions, 67355 flow [2025-03-14 23:21:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-14 23:21:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-14 23:21:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2778 transitions. [2025-03-14 23:21:01,304 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.7483836206896551 [2025-03-14 23:21:01,304 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 829 predicate places. [2025-03-14 23:21:01,304 INFO L471 AbstractCegarLoop]: Abstraction has has 956 places, 2469 transitions, 67355 flow [2025-03-14 23:21:01,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 95.65714285714286) internal successors, (3348), 35 states have internal predecessors, (3348), 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) [2025-03-14 23:21:01,305 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:21:01,305 INFO L221 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-14 23:21:01,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-14 23:21:01,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-14 23:21:01,506 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:21:01,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:21:01,506 INFO L85 PathProgramCache]: Analyzing trace with hash 656412605, now seen corresponding path program 12 times [2025-03-14 23:21:01,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:21:01,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659803720] [2025-03-14 23:21:01,507 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 23:21:01,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:21:01,524 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-14 23:21:01,524 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:21:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:01,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:21:01,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659803720] [2025-03-14 23:21:01,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659803720] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:21:01,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860071477] [2025-03-14 23:21:01,748 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 23:21:01,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:21:01,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:21:01,750 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) [2025-03-14 23:21:01,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-14 23:21:01,810 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-14 23:21:01,810 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:21:01,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-14 23:21:01,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:21:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:02,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:21:02,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:21:02,150 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 37 treesize of output 21 [2025-03-14 23:21:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:02,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860071477] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:21:02,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:21:02,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2025-03-14 23:21:02,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715099388] [2025-03-14 23:21:02,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:21:02,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-14 23:21:02,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:21:02,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-14 23:21:02,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2025-03-14 23:21:02,298 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 128 [2025-03-14 23:21:02,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 956 places, 2469 transitions, 67355 flow. Second operand has 29 states, 29 states have (on average 66.75862068965517) internal successors, (1936), 29 states have internal predecessors, (1936), 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) [2025-03-14 23:21:02,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:21:02,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 128 [2025-03-14 23:21:02,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:21:04,500 INFO L124 PetriNetUnfolderBase]: 1515/4727 cut-off events. [2025-03-14 23:21:04,500 INFO L125 PetriNetUnfolderBase]: For 65931/67494 co-relation queries the response was YES. [2025-03-14 23:21:04,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58872 conditions, 4727 events. 1515/4727 cut-off events. For 65931/67494 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 41351 event pairs, 4 based on Foata normal form. 233/4525 useless extension candidates. Maximal degree in co-relation 23172. Up to 3207 conditions per place. [2025-03-14 23:21:04,538 INFO L140 encePairwiseOnDemand]: 104/128 looper letters, 591 selfloop transitions, 214 changer transitions 1619/2493 dead transitions. [2025-03-14 23:21:04,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 989 places, 2493 transitions, 72873 flow [2025-03-14 23:21:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-14 23:21:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-14 23:21:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2371 transitions. [2025-03-14 23:21:04,539 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.5448069852941176 [2025-03-14 23:21:04,540 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 862 predicate places. [2025-03-14 23:21:04,540 INFO L471 AbstractCegarLoop]: Abstraction has has 989 places, 2493 transitions, 72873 flow [2025-03-14 23:21:04,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 66.75862068965517) internal successors, (1936), 29 states have internal predecessors, (1936), 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) [2025-03-14 23:21:04,540 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:21:04,540 INFO L221 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-14 23:21:04,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-14 23:21:04,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:21:04,741 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:21:04,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:21:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1694528653, now seen corresponding path program 13 times [2025-03-14 23:21:04,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:21:04,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556430493] [2025-03-14 23:21:04,742 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 23:21:04,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:21:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:21:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:21:05,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:21:05,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556430493] [2025-03-14 23:21:05,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556430493] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:21:05,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427682991] [2025-03-14 23:21:05,579 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 23:21:05,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:21:05,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:21:05,581 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) [2025-03-14 23:21:05,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-14 23:21:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:21:05,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-14 23:21:05,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:21:06,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 23:21:06,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:21:06,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:21:06,292 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 37 treesize of output 21 [2025-03-14 23:21:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:06,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427682991] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:21:06,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:21:06,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 16] total 57 [2025-03-14 23:21:06,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396513559] [2025-03-14 23:21:06,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:21:06,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-03-14 23:21:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:21:06,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-03-14 23:21:06,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2950, Unknown=0, NotChecked=0, Total=3192 [2025-03-14 23:21:06,458 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 128 [2025-03-14 23:21:06,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 989 places, 2493 transitions, 72873 flow. Second operand has 57 states, 57 states have (on average 44.12280701754386) internal successors, (2515), 57 states have internal predecessors, (2515), 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) [2025-03-14 23:21:06,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:21:06,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 128 [2025-03-14 23:21:06,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:21:10,309 INFO L124 PetriNetUnfolderBase]: 1607/4993 cut-off events. [2025-03-14 23:21:10,310 INFO L125 PetriNetUnfolderBase]: For 76926/78668 co-relation queries the response was YES. [2025-03-14 23:21:10,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66546 conditions, 4993 events. 1607/4993 cut-off events. For 76926/78668 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 44143 event pairs, 7 based on Foata normal form. 275/4821 useless extension candidates. Maximal degree in co-relation 24148. Up to 3283 conditions per place. [2025-03-14 23:21:10,346 INFO L140 encePairwiseOnDemand]: 85/128 looper letters, 611 selfloop transitions, 311 changer transitions 1703/2661 dead transitions. [2025-03-14 23:21:10,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1068 places, 2661 transitions, 83150 flow [2025-03-14 23:21:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-03-14 23:21:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2025-03-14 23:21:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 3624 transitions. [2025-03-14 23:21:10,349 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.35390625 [2025-03-14 23:21:10,349 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 941 predicate places. [2025-03-14 23:21:10,349 INFO L471 AbstractCegarLoop]: Abstraction has has 1068 places, 2661 transitions, 83150 flow [2025-03-14 23:21:10,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 44.12280701754386) internal successors, (2515), 57 states have internal predecessors, (2515), 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) [2025-03-14 23:21:10,350 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:21:10,350 INFO L221 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-14 23:21:10,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-14 23:21:10,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:21:10,550 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:21:10,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:21:10,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2035406639, now seen corresponding path program 14 times [2025-03-14 23:21:10,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:21:10,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812328331] [2025-03-14 23:21:10,551 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 23:21:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:21:10,562 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 23:21:10,563 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:21:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:10,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:21:10,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812328331] [2025-03-14 23:21:10,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812328331] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:21:10,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994127658] [2025-03-14 23:21:10,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 23:21:10,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:21:10,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:21:10,773 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) [2025-03-14 23:21:10,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-14 23:21:10,831 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 23:21:10,831 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:21:10,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-14 23:21:10,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:21:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 23:21:11,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:21:11,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:21:11,256 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 37 treesize of output 21 [2025-03-14 23:21:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:11,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994127658] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:21:11,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:21:11,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21, 16] total 36 [2025-03-14 23:21:11,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604082770] [2025-03-14 23:21:11,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:21:11,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-14 23:21:11,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:21:11,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-14 23:21:11,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2025-03-14 23:21:11,409 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 128 [2025-03-14 23:21:11,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1068 places, 2661 transitions, 83150 flow. Second operand has 36 states, 36 states have (on average 54.94444444444444) internal successors, (1978), 36 states have internal predecessors, (1978), 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) [2025-03-14 23:21:11,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:21:11,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 128 [2025-03-14 23:21:11,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:21:14,193 INFO L124 PetriNetUnfolderBase]: 1606/5078 cut-off events. [2025-03-14 23:21:14,194 INFO L125 PetriNetUnfolderBase]: For 82934/84693 co-relation queries the response was YES. [2025-03-14 23:21:14,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72103 conditions, 5078 events. 1606/5078 cut-off events. For 82934/84693 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 45417 event pairs, 5 based on Foata normal form. 228/4841 useless extension candidates. Maximal degree in co-relation 30036. Up to 3359 conditions per place. [2025-03-14 23:21:14,238 INFO L140 encePairwiseOnDemand]: 97/128 looper letters, 626 selfloop transitions, 317 changer transitions 1742/2735 dead transitions. [2025-03-14 23:21:14,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1113 places, 2735 transitions, 90787 flow [2025-03-14 23:21:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-14 23:21:14,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-03-14 23:21:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2621 transitions. [2025-03-14 23:21:14,240 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.44514266304347827 [2025-03-14 23:21:14,240 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 986 predicate places. [2025-03-14 23:21:14,241 INFO L471 AbstractCegarLoop]: Abstraction has has 1113 places, 2735 transitions, 90787 flow [2025-03-14 23:21:14,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 54.94444444444444) internal successors, (1978), 36 states have internal predecessors, (1978), 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) [2025-03-14 23:21:14,241 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:21:14,241 INFO L221 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-14 23:21:14,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-14 23:21:14,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-14 23:21:14,442 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:21:14,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:21:14,443 INFO L85 PathProgramCache]: Analyzing trace with hash -683862874, now seen corresponding path program 15 times [2025-03-14 23:21:14,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:21:14,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231944406] [2025-03-14 23:21:14,443 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 23:21:14,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:21:14,462 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-14 23:21:14,462 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:21:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:14,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:21:14,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231944406] [2025-03-14 23:21:14,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231944406] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:21:14,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924178055] [2025-03-14 23:21:14,521 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 23:21:14,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:21:14,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:21:14,524 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) [2025-03-14 23:21:14,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-14 23:21:14,588 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-14 23:21:14,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:21:14,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-14 23:21:14,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:21:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:14,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:21:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:14,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924178055] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:21:14,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:21:14,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2025-03-14 23:21:14,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187913047] [2025-03-14 23:21:14,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:21:14,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-14 23:21:14,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:21:14,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-14 23:21:14,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2025-03-14 23:21:14,844 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 128 [2025-03-14 23:21:14,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1113 places, 2735 transitions, 90787 flow. Second operand has 10 states, 10 states have (on average 113.2) internal successors, (1132), 10 states have internal predecessors, (1132), 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) [2025-03-14 23:21:14,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:21:14,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 128 [2025-03-14 23:21:14,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:21:16,961 INFO L124 PetriNetUnfolderBase]: 2040/6217 cut-off events. [2025-03-14 23:21:16,961 INFO L125 PetriNetUnfolderBase]: For 112315/113952 co-relation queries the response was YES. [2025-03-14 23:21:16,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90009 conditions, 6217 events. 2040/6217 cut-off events. For 112315/113952 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 55688 event pairs, 6 based on Foata normal form. 119/5750 useless extension candidates. Maximal degree in co-relation 46021. Up to 4257 conditions per place. [2025-03-14 23:21:17,015 INFO L140 encePairwiseOnDemand]: 122/128 looper letters, 202 selfloop transitions, 316 changer transitions 1769/2937 dead transitions. [2025-03-14 23:21:17,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1118 places, 2937 transitions, 101886 flow [2025-03-14 23:21:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-14 23:21:17,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-14 23:21:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 695 transitions. [2025-03-14 23:21:17,016 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.9049479166666666 [2025-03-14 23:21:17,017 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 991 predicate places. [2025-03-14 23:21:17,017 INFO L471 AbstractCegarLoop]: Abstraction has has 1118 places, 2937 transitions, 101886 flow [2025-03-14 23:21:17,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.2) internal successors, (1132), 10 states have internal predecessors, (1132), 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) [2025-03-14 23:21:17,017 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:21:17,017 INFO L221 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-14 23:21:17,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-14 23:21:17,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:21:17,218 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:21:17,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:21:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -554992811, now seen corresponding path program 16 times [2025-03-14 23:21:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:21:17,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067399254] [2025-03-14 23:21:17,219 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 23:21:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:21:17,227 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2025-03-14 23:21:17,227 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:21:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:21:17,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:21:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067399254] [2025-03-14 23:21:17,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067399254] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:21:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259452568] [2025-03-14 23:21:17,841 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 23:21:17,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:21:17,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:21:17,843 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) [2025-03-14 23:21:17,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-14 23:21:17,894 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2025-03-14 23:21:17,895 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:21:17,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-14 23:21:17,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:21:18,373 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-14 23:21:18,373 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 23 treesize of output 10 [2025-03-14 23:21:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:21:18,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:21:18,528 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-03-14 23:21:18,529 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 13 [2025-03-14 23:21:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:21:19,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259452568] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:21:19,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:21:19,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 55 [2025-03-14 23:21:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668583466] [2025-03-14 23:21:19,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:21:19,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-03-14 23:21:19,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:21:19,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-03-14 23:21:19,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2025-03-14 23:21:19,535 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 128 [2025-03-14 23:21:19,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1118 places, 2937 transitions, 101886 flow. Second operand has 55 states, 55 states have (on average 53.981818181818184) internal successors, (2969), 55 states have internal predecessors, (2969), 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) [2025-03-14 23:21:19,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:21:19,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 128 [2025-03-14 23:21:19,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:21:32,399 INFO L124 PetriNetUnfolderBase]: 5788/16040 cut-off events. [2025-03-14 23:21:32,400 INFO L125 PetriNetUnfolderBase]: For 279174/282751 co-relation queries the response was YES. [2025-03-14 23:21:32,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251286 conditions, 16040 events. 5788/16040 cut-off events. For 279174/282751 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 157876 event pairs, 6 based on Foata normal form. 301/14723 useless extension candidates. Maximal degree in co-relation 132837. Up to 12487 conditions per place. [2025-03-14 23:21:32,586 INFO L140 encePairwiseOnDemand]: 94/128 looper letters, 4116 selfloop transitions, 1554 changer transitions 2406/8123 dead transitions. [2025-03-14 23:21:32,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1220 places, 8123 transitions, 298823 flow [2025-03-14 23:21:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2025-03-14 23:21:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2025-03-14 23:21:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 6046 transitions. [2025-03-14 23:21:32,590 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.4585861650485437 [2025-03-14 23:21:32,590 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 1093 predicate places. [2025-03-14 23:21:32,590 INFO L471 AbstractCegarLoop]: Abstraction has has 1220 places, 8123 transitions, 298823 flow [2025-03-14 23:21:32,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 53.981818181818184) internal successors, (2969), 55 states have internal predecessors, (2969), 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) [2025-03-14 23:21:32,595 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:21:32,595 INFO L221 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-14 23:21:32,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-14 23:21:32,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:21:32,796 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:21:32,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:21:32,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1514087253, now seen corresponding path program 17 times [2025-03-14 23:21:32,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:21:32,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461041581] [2025-03-14 23:21:32,797 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 23:21:32,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:21:32,807 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-14 23:21:32,807 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:21:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:21:33,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:21:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461041581] [2025-03-14 23:21:33,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461041581] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:21:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594294309] [2025-03-14 23:21:33,743 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 23:21:33,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:21:33,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:21:33,747 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) [2025-03-14 23:21:33,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-14 23:21:33,842 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-14 23:21:33,843 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:21:33,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-14 23:21:33,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:21:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:34,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:21:34,110 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-03-14 23:21:34,110 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 13 [2025-03-14 23:21:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:21:34,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594294309] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:21:34,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:21:34,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 8, 7] total 34 [2025-03-14 23:21:34,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311401944] [2025-03-14 23:21:34,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:21:34,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-14 23:21:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:21:34,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-14 23:21:34,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2025-03-14 23:21:34,164 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 128 [2025-03-14 23:21:34,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1220 places, 8123 transitions, 298823 flow. Second operand has 34 states, 34 states have (on average 55.05882352941177) internal successors, (1872), 34 states have internal predecessors, (1872), 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) [2025-03-14 23:21:34,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:21:34,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 128 [2025-03-14 23:21:34,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:22:19,253 INFO L124 PetriNetUnfolderBase]: 10258/26162 cut-off events. [2025-03-14 23:22:19,253 INFO L125 PetriNetUnfolderBase]: For 504167/510514 co-relation queries the response was YES. [2025-03-14 23:22:19,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436957 conditions, 26162 events. 10258/26162 cut-off events. For 504167/510514 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 260227 event pairs, 15 based on Foata normal form. 555/24479 useless extension candidates. Maximal degree in co-relation 305560. Up to 21731 conditions per place. [2025-03-14 23:22:19,753 INFO L140 encePairwiseOnDemand]: 100/128 looper letters, 5355 selfloop transitions, 1276 changer transitions 2382/11183 dead transitions. [2025-03-14 23:22:19,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1277 places, 11183 transitions, 444587 flow [2025-03-14 23:22:19,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-03-14 23:22:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2025-03-14 23:22:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3593 transitions. [2025-03-14 23:22:19,755 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.4385986328125 [2025-03-14 23:22:19,756 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 1150 predicate places. [2025-03-14 23:22:19,756 INFO L471 AbstractCegarLoop]: Abstraction has has 1277 places, 11183 transitions, 444587 flow [2025-03-14 23:22:19,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 55.05882352941177) internal successors, (1872), 34 states have internal predecessors, (1872), 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) [2025-03-14 23:22:19,757 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:22:19,757 INFO L221 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-14 23:22:19,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-14 23:22:19,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-14 23:22:19,961 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:22:19,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:22:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash 886212030, now seen corresponding path program 18 times [2025-03-14 23:22:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:22:19,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271034721] [2025-03-14 23:22:19,962 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 23:22:19,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:22:19,995 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-14 23:22:19,996 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:22:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:22:21,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:22:21,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271034721] [2025-03-14 23:22:21,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271034721] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:22:21,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440452797] [2025-03-14 23:22:21,799 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 23:22:21,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:22:21,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:22:21,801 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) [2025-03-14 23:22:21,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-14 23:22:21,892 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-14 23:22:21,892 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:22:21,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-03-14 23:22:21,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:22:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-14 23:22:22,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:22:23,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:22:23,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-03-14 23:22:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-14 23:22:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440452797] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:22:23,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:22:23,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 25, 20] total 72 [2025-03-14 23:22:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005115859] [2025-03-14 23:22:23,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:22:23,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2025-03-14 23:22:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:22:23,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2025-03-14 23:22:23,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=4826, Unknown=0, NotChecked=0, Total=5112 [2025-03-14 23:22:23,206 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 128 [2025-03-14 23:22:23,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1277 places, 11183 transitions, 444587 flow. Second operand has 72 states, 72 states have (on average 43.833333333333336) internal successors, (3156), 72 states have internal predecessors, (3156), 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) [2025-03-14 23:22:23,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:22:23,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 128 [2025-03-14 23:22:23,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:24:04,509 INFO L124 PetriNetUnfolderBase]: 10433/26667 cut-off events. [2025-03-14 23:24:04,510 INFO L125 PetriNetUnfolderBase]: For 543543/550904 co-relation queries the response was YES. [2025-03-14 23:24:04,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469648 conditions, 26667 events. 10433/26667 cut-off events. For 543543/550904 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 267567 event pairs, 8 based on Foata normal form. 529/24942 useless extension candidates. Maximal degree in co-relation 330471. Up to 22096 conditions per place. [2025-03-14 23:24:04,917 INFO L140 encePairwiseOnDemand]: 87/128 looper letters, 5882 selfloop transitions, 3133 changer transitions 2510/11561 dead transitions. [2025-03-14 23:24:04,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1360 places, 11561 transitions, 482460 flow [2025-03-14 23:24:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-03-14 23:24:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2025-03-14 23:24:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 3807 transitions. [2025-03-14 23:24:04,919 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.3540736607142857 [2025-03-14 23:24:04,920 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 1233 predicate places. [2025-03-14 23:24:04,920 INFO L471 AbstractCegarLoop]: Abstraction has has 1360 places, 11561 transitions, 482460 flow [2025-03-14 23:24:04,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 43.833333333333336) internal successors, (3156), 72 states have internal predecessors, (3156), 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) [2025-03-14 23:24:04,921 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:24:04,921 INFO L221 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-14 23:24:04,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-14 23:24:05,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:24:05,121 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:24:05,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:24:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1712646520, now seen corresponding path program 19 times [2025-03-14 23:24:05,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:24:05,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745409168] [2025-03-14 23:24:05,122 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 23:24:05,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:24:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:24:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:24:06,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:24:06,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745409168] [2025-03-14 23:24:06,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745409168] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:24:06,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155549388] [2025-03-14 23:24:06,384 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 23:24:06,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:24:06,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:24:06,385 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) [2025-03-14 23:24:06,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-14 23:24:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 23:24:06,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-03-14 23:24:06,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:24:07,505 INFO L349 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2025-03-14 23:24:07,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 18 [2025-03-14 23:24:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:24:07,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:24:08,373 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2025-03-14 23:24:08,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 53 [2025-03-14 23:24:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:24:10,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155549388] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:24:10,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:24:10,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 31, 31] total 90 [2025-03-14 23:24:10,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209651622] [2025-03-14 23:24:10,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:24:10,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2025-03-14 23:24:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:24:10,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2025-03-14 23:24:10,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=849, Invalid=7161, Unknown=0, NotChecked=0, Total=8010 [2025-03-14 23:24:10,023 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 128 [2025-03-14 23:24:10,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1360 places, 11561 transitions, 482460 flow. Second operand has 90 states, 90 states have (on average 43.78888888888889) internal successors, (3941), 90 states have internal predecessors, (3941), 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) [2025-03-14 23:24:10,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:24:10,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 128 [2025-03-14 23:24:10,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 23:27:12,252 INFO L124 PetriNetUnfolderBase]: 17103/42770 cut-off events. [2025-03-14 23:27:12,253 INFO L125 PetriNetUnfolderBase]: For 806377/815800 co-relation queries the response was YES. [2025-03-14 23:27:12,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785378 conditions, 42770 events. 17103/42770 cut-off events. For 806377/815800 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 453702 event pairs, 6 based on Foata normal form. 1000/39860 useless extension candidates. Maximal degree in co-relation 620815. Up to 36213 conditions per place. [2025-03-14 23:27:13,479 INFO L140 encePairwiseOnDemand]: 80/128 looper letters, 5147 selfloop transitions, 10755 changer transitions 3359/19297 dead transitions. [2025-03-14 23:27:13,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1621 places, 19297 transitions, 836814 flow [2025-03-14 23:27:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2025-03-14 23:27:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2025-03-14 23:27:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 11736 transitions. [2025-03-14 23:27:13,511 INFO L531 CegarLoopForPetriNet]: DFA transition density 0.3499522900763359 [2025-03-14 23:27:13,512 INFO L298 CegarLoopForPetriNet]: 127 programPoint places, 1494 predicate places. [2025-03-14 23:27:13,512 INFO L471 AbstractCegarLoop]: Abstraction has has 1621 places, 19297 transitions, 836814 flow [2025-03-14 23:27:13,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 43.78888888888889) internal successors, (3941), 90 states have internal predecessors, (3941), 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) [2025-03-14 23:27:13,513 INFO L213 CegarLoopForPetriNet]: Found error trace [2025-03-14 23:27:13,513 INFO L221 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-14 23:27:13,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-14 23:27:13,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:27:13,714 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-14 23:27:13,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 23:27:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1536987848, now seen corresponding path program 20 times [2025-03-14 23:27:13,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 23:27:13,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961065695] [2025-03-14 23:27:13,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 23:27:13,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 23:27:13,942 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 23:27:13,942 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:27:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:27:16,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 23:27:16,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961065695] [2025-03-14 23:27:16,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961065695] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 23:27:16,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129558411] [2025-03-14 23:27:16,107 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 23:27:16,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:27:16,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 23:27:16,110 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) [2025-03-14 23:27:16,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-14 23:27:16,196 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 23:27:16,196 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2025-03-14 23:27:16,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-03-14 23:27:16,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 23:27:18,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:27:18,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 7 [2025-03-14 23:27:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:27:18,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 23:27:18,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 23:27:18,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-03-14 23:27:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 23:27:20,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129558411] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 23:27:20,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 23:27:20,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 36, 31] total 96 [2025-03-14 23:27:20,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808275799] [2025-03-14 23:27:20,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 23:27:20,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-03-14 23:27:20,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 23:27:20,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-03-14 23:27:20,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=927, Invalid=8193, Unknown=0, NotChecked=0, Total=9120 [2025-03-14 23:27:20,521 INFO L486 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 128 [2025-03-14 23:27:20,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1621 places, 19297 transitions, 836814 flow. Second operand has 96 states, 96 states have (on average 43.635416666666664) internal successors, (4189), 96 states have internal predecessors, (4189), 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) [2025-03-14 23:27:20,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 23:27:20,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 128 [2025-03-14 23:27:20,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2025-03-14 23:33:19,270 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 [2025-03-14 23:33:19,270 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-03-14 23:33:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 410 states. [2025-03-14 23:33:19,416 INFO L782 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-14 23:33:19,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-14 23:33:19,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 23:33:19,621 WARN L596 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (96states, 41/128 universal loopers) in iteration 27,while PetriNetUnfolder was constructing finite prefix that currently has 919303 conditions, 47550 events (18534/47549 cut-off events. For 1099275/1112308 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 563551 event pairs, 7 based on Foata normal form. 1795/45836 useless extension candidates. Maximal degree in co-relation 747845. Up to 40300 conditions per place.). [2025-03-14 23:33:19,624 INFO L782 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-14 23:33:19,624 INFO L782 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-14 23:33:19,624 INFO L422 BasicCegarLoop]: Path program histogram: [20, 2, 2, 1, 1, 1] [2025-03-14 23:33:19,638 INFO L328 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-14 23:33:19,638 INFO L188 ceAbstractionStarter]: Computing trace abstraction results [2025-03-14 23:33:19,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.03 11:33:19 BasicIcfg [2025-03-14 23:33:19,648 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-14 23:33:19,649 INFO L158 Benchmark]: Toolchain (without parser) took 803067.87ms. Allocated memory was 71.3MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 44.4MB in the beginning and 203.4MB in the end (delta: -159.0MB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2025-03-14 23:33:19,649 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 36.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-03-14 23:33:19,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.73ms. Allocated memory is still 71.3MB. Free memory was 44.3MB in the beginning and 32.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-03-14 23:33:19,649 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.23ms. Allocated memory is still 71.3MB. Free memory was 32.2MB in the beginning and 30.6MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-03-14 23:33:19,649 INFO L158 Benchmark]: Boogie Preprocessor took 27.31ms. Allocated memory is still 71.3MB. Free memory was 30.6MB in the beginning and 29.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2025-03-14 23:33:19,655 INFO L158 Benchmark]: RCFGBuilder took 434.69ms. Allocated memory is still 71.3MB. Free memory was 29.5MB in the beginning and 33.1MB in the end (delta: -3.6MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. [2025-03-14 23:33:19,655 INFO L158 Benchmark]: TraceAbstraction took 802376.78ms. Allocated memory was 71.3MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 31.7MB in the beginning and 203.4MB in the end (delta: -171.7MB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2025-03-14 23:33:19,656 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 36.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.73ms. Allocated memory is still 71.3MB. Free memory was 44.3MB in the beginning and 32.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.23ms. Allocated memory is still 71.3MB. Free memory was 32.2MB in the beginning and 30.6MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.31ms. Allocated memory is still 71.3MB. Free memory was 30.6MB in the beginning and 29.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 434.69ms. Allocated memory is still 71.3MB. Free memory was 29.5MB in the beginning and 33.1MB in the end (delta: -3.6MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. * TraceAbstraction took 802376.78ms. Allocated memory was 71.3MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 31.7MB in the beginning and 203.4MB in the end (delta: -171.7MB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (96states, 41/128 universal loopers) in iteration 27,while PetriNetUnfolder was constructing finite prefix that currently has 919303 conditions, 47550 events (18534/47549 cut-off events. For 1099275/1112308 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 563551 event pairs, 7 based on Foata normal form. 1795/45836 useless extension candidates. Maximal degree in co-relation 747845. Up to 40300 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 (96states, 41/128 universal loopers) in iteration 27,while PetriNetUnfolder was constructing finite prefix that currently has 919303 conditions, 47550 events (18534/47549 cut-off events. For 1099275/1112308 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 563551 event pairs, 7 based on Foata normal form. 1795/45836 useless extension candidates. Maximal degree in co-relation 747845. Up to 40300 conditions per place.). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (96states, 41/128 universal loopers) in iteration 27,while PetriNetUnfolder was constructing finite prefix that currently has 919303 conditions, 47550 events (18534/47549 cut-off events. For 1099275/1112308 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 563551 event pairs, 7 based on Foata normal form. 1795/45836 useless extension candidates. Maximal degree in co-relation 747845. Up to 40300 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 143 locations, 3 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: 802.3s, OverallIterations: 27, TraceHistogramMax: 3, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 757.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16014 SdHoareTripleChecker+Valid, 22.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16014 mSDsluCounter, 32635 SdHoareTripleChecker+Invalid, 19.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31153 mSDsCounter, 4045 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55430 IncrementalHoareTripleChecker+Invalid, 59475 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4045 mSolverCounterUnsat, 1482 mSDtfsCounter, 55430 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7088 GetRequests, 4417 SyntacticMatches, 4 SemanticMatches, 2667 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232712 ImplicationChecksByTransitivity, 86.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=836814occurred in iteration=26, InterpolantAutomatonStates: 1597, 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: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 39.0s InterpolantComputationTime, 5718 NumberOfCodeBlocks, 5550 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 8077 ConstructedInterpolants, 24 QuantifiedInterpolants, 72914 SizeOfPredicates, 384 NumberOfNonLiveVariables, 4920 ConjunctsInSsa, 627 ConjunctsInUnsatCore, 65 InterpolantComputations, 8 PerfectInterpolantSequences, 517/1352 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown