/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 ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 17:48:00,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 17:48:00,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 17:48:00,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 17:48:00,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 17:48:00,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 17:48:00,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 17:48:00,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 17:48:00,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 17:48:00,642 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 17:48:00,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 17:48:00,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 17:48:00,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 17:48:00,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 17:48:00,643 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 17:48:00,644 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:48:00,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:48:00,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 17:48:00,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 17:48:00,645 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA [2025-04-13 17:48:00,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 17:48:00,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 17:48:00,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 17:48:00,882 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 17:48:00,882 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 17:48:00,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c [2025-04-13 17:48:02,226 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ae6482f/7ee86c5457834f399f9ecb26541c02aa/FLAG9e5a705da [2025-04-13 17:48:02,419 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 17:48:02,419 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-symm.wvr.c [2025-04-13 17:48:02,431 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ae6482f/7ee86c5457834f399f9ecb26541c02aa/FLAG9e5a705da [2025-04-13 17:48:03,378 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ae6482f/7ee86c5457834f399f9ecb26541c02aa [2025-04-13 17:48:03,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 17:48:03,381 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 17:48:03,382 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 17:48:03,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 17:48:03,387 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 17:48:03,388 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b9c181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03, skipping insertion in model container [2025-04-13 17:48:03,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,405 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 17:48:03,583 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/chl-name-comparator-symm.wvr.c[3882,3895] [2025-04-13 17:48:03,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:48:03,613 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 17:48:03,648 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/chl-name-comparator-symm.wvr.c[3882,3895] [2025-04-13 17:48:03,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:48:03,665 INFO L204 MainTranslator]: Completed translation [2025-04-13 17:48:03,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03 WrapperNode [2025-04-13 17:48:03,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 17:48:03,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 17:48:03,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 17:48:03,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 17:48:03,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,710 INFO L138 Inliner]: procedures = 24, calls = 24, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 214 [2025-04-13 17:48:03,710 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 17:48:03,711 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 17:48:03,711 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 17:48:03,711 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 17:48:03,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,743 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-04-13 17:48:03,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,751 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,752 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 17:48:03,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 17:48:03,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 17:48:03,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 17:48:03,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (1/1) ... [2025-04-13 17:48:03,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:48:03,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:03,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 17:48:03,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 17:48:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 17:48:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 17:48:03,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 17:48:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 17:48:03,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 17:48:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 17:48:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 17:48:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 17:48:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 17:48:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 17:48:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 17:48:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 17:48:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 17:48:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 17:48:03,819 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 17:48:03,900 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 17:48:03,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 17:48:04,169 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 17:48:04,170 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 17:48:04,170 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 17:48:04,497 INFO L313 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-13 17:48:04,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:48:04 BoogieIcfgContainer [2025-04-13 17:48:04,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 17:48:04,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 17:48:04,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 17:48:04,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 17:48:04,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 05:48:03" (1/3) ... [2025-04-13 17:48:04,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a497bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:48:04, skipping insertion in model container [2025-04-13 17:48:04,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:48:03" (2/3) ... [2025-04-13 17:48:04,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a497bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:48:04, skipping insertion in model container [2025-04-13 17:48:04,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:48:04" (3/3) ... [2025-04-13 17:48:04,504 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2025-04-13 17:48:04,515 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 17:48:04,516 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-symm.wvr.c that has 3 procedures, 17 locations, 17 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 17:48:04,517 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 17:48:04,557 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 17:48:04,577 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 19 transitions, 52 flow [2025-04-13 17:48:04,585 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 32 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 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) [2025-04-13 17:48:04,606 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:48:04,614 INFO L340 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1198f5b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:48:04,615 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 17:48:04,617 INFO L278 IsEmpty]: Start isEmpty. Operand has 32 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 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) [2025-04-13 17:48:04,620 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:48:04,620 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:04,620 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:04,621 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:04,624 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1593263060, now seen corresponding path program 1 times [2025-04-13 17:48:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:04,631 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654959258] [2025-04-13 17:48:04,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:48:04,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:04,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 17:48:04,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:48:04,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:04,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:48:04,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:04,930 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654959258] [2025-04-13 17:48:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654959258] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:48:04,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:48:04,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 17:48:04,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675379437] [2025-04-13 17:48:04,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:04,936 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 17:48:04,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:04,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 17:48:04,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 17:48:04,952 INFO L87 Difference]: Start difference. First operand has 32 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 states have internal predecessors, (69), 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) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-04-13 17:48:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:05,002 INFO L93 Difference]: Finished difference Result 63 states and 137 transitions. [2025-04-13 17:48:05,003 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 17:48:05,004 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) Word has length 13 [2025-04-13 17:48:05,005 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:05,010 INFO L225 Difference]: With dead ends: 63 [2025-04-13 17:48:05,010 INFO L226 Difference]: Without dead ends: 33 [2025-04-13 17:48:05,012 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 17:48:05,017 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:05,018 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:48:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-04-13 17:48:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2025-04-13 17:48:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 2.1875) internal successors, (70), 32 states have internal predecessors, (70), 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) [2025-04-13 17:48:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 70 transitions. [2025-04-13 17:48:05,039 INFO L79 Accepts]: Start accepts. Automaton has 33 states and 70 transitions. Word has length 13 [2025-04-13 17:48:05,040 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:05,040 INFO L485 AbstractCegarLoop]: Abstraction has 33 states and 70 transitions. [2025-04-13 17:48:05,040 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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) [2025-04-13 17:48:05,040 INFO L278 IsEmpty]: Start isEmpty. Operand 33 states and 70 transitions. [2025-04-13 17:48:05,040 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:48:05,040 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:05,040 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:05,041 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 17:48:05,041 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:05,041 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash -938636412, now seen corresponding path program 1 times [2025-04-13 17:48:05,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:05,041 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773347158] [2025-04-13 17:48:05,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:48:05,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:05,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:48:05,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:48:05,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:05,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:48:05,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:05,190 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773347158] [2025-04-13 17:48:05,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773347158] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:05,190 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340757874] [2025-04-13 17:48:05,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:48:05,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:05,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:05,192 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) [2025-04-13 17:48:05,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-13 17:48:05,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:48:05,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:48:05,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:05,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:05,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-13 17:48:05,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:48:05,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:48:05,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340757874] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:05,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:05,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-04-13 17:48:05,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571991314] [2025-04-13 17:48:05,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:05,366 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 17:48:05,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:05,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 17:48:05,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:48:05,367 INFO L87 Difference]: Start difference. First operand 33 states and 70 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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) [2025-04-13 17:48:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:05,419 INFO L93 Difference]: Finished difference Result 65 states and 140 transitions. [2025-04-13 17:48:05,419 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:05,419 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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) Word has length 14 [2025-04-13 17:48:05,419 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:05,420 INFO L225 Difference]: With dead ends: 65 [2025-04-13 17:48:05,420 INFO L226 Difference]: Without dead ends: 35 [2025-04-13 17:48:05,420 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:48:05,421 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:05,421 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:48:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-04-13 17:48:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2025-04-13 17:48:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 34 states have internal predecessors, (72), 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) [2025-04-13 17:48:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 72 transitions. [2025-04-13 17:48:05,425 INFO L79 Accepts]: Start accepts. Automaton has 35 states and 72 transitions. Word has length 14 [2025-04-13 17:48:05,426 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:05,426 INFO L485 AbstractCegarLoop]: Abstraction has 35 states and 72 transitions. [2025-04-13 17:48:05,426 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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) [2025-04-13 17:48:05,426 INFO L278 IsEmpty]: Start isEmpty. Operand 35 states and 72 transitions. [2025-04-13 17:48:05,427 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:48:05,427 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:05,427 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:05,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:05,632 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:05,632 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:05,632 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:05,632 INFO L85 PathProgramCache]: Analyzing trace with hash -27044476, now seen corresponding path program 2 times [2025-04-13 17:48:05,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:05,633 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486444650] [2025-04-13 17:48:05,633 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:05,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:05,650 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:48:05,680 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 16 statements. [2025-04-13 17:48:05,680 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 17:48:05,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:06,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:06,041 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486444650] [2025-04-13 17:48:06,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486444650] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:48:06,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:48:06,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:48:06,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35737684] [2025-04-13 17:48:06,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:06,042 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 17:48:06,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:06,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 17:48:06,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 17:48:06,042 INFO L87 Difference]: Start difference. First operand 35 states and 72 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2025-04-13 17:48:06,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:06,177 INFO L93 Difference]: Finished difference Result 71 states and 142 transitions. [2025-04-13 17:48:06,177 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:06,178 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 16 [2025-04-13 17:48:06,178 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:06,178 INFO L225 Difference]: With dead ends: 71 [2025-04-13 17:48:06,178 INFO L226 Difference]: Without dead ends: 51 [2025-04-13 17:48:06,178 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-04-13 17:48:06,179 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:06,179 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-04-13 17:48:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2025-04-13 17:48:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 38 states have internal predecessors, (81), 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) [2025-04-13 17:48:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 81 transitions. [2025-04-13 17:48:06,183 INFO L79 Accepts]: Start accepts. Automaton has 39 states and 81 transitions. Word has length 16 [2025-04-13 17:48:06,183 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:06,183 INFO L485 AbstractCegarLoop]: Abstraction has 39 states and 81 transitions. [2025-04-13 17:48:06,183 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2025-04-13 17:48:06,183 INFO L278 IsEmpty]: Start isEmpty. Operand 39 states and 81 transitions. [2025-04-13 17:48:06,183 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:48:06,183 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:06,183 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:06,183 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 17:48:06,183 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:06,184 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1862744136, now seen corresponding path program 3 times [2025-04-13 17:48:06,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:06,184 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328490287] [2025-04-13 17:48:06,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:48:06,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:06,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:48:06,202 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 16 statements. [2025-04-13 17:48:06,202 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 17:48:06,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:06,436 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328490287] [2025-04-13 17:48:06,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328490287] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:48:06,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:48:06,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:48:06,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217083862] [2025-04-13 17:48:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:06,437 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 17:48:06,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:06,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 17:48:06,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 17:48:06,438 INFO L87 Difference]: Start difference. First operand 39 states and 81 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2025-04-13 17:48:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:06,579 INFO L93 Difference]: Finished difference Result 57 states and 116 transitions. [2025-04-13 17:48:06,579 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:06,579 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 16 [2025-04-13 17:48:06,579 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:06,580 INFO L225 Difference]: With dead ends: 57 [2025-04-13 17:48:06,580 INFO L226 Difference]: Without dead ends: 44 [2025-04-13 17:48:06,581 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-04-13 17:48:06,581 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:06,581 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:06,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-04-13 17:48:06,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-04-13 17:48:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 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) [2025-04-13 17:48:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 93 transitions. [2025-04-13 17:48:06,590 INFO L79 Accepts]: Start accepts. Automaton has 44 states and 93 transitions. Word has length 16 [2025-04-13 17:48:06,590 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:06,590 INFO L485 AbstractCegarLoop]: Abstraction has 44 states and 93 transitions. [2025-04-13 17:48:06,590 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2025-04-13 17:48:06,590 INFO L278 IsEmpty]: Start isEmpty. Operand 44 states and 93 transitions. [2025-04-13 17:48:06,592 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:48:06,592 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:06,592 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:06,592 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 17:48:06,592 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:06,592 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1163642556, now seen corresponding path program 4 times [2025-04-13 17:48:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:06,592 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101742514] [2025-04-13 17:48:06,592 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:06,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:06,600 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:48:06,606 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:48:06,607 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:06,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:06,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:06,852 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101742514] [2025-04-13 17:48:06,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101742514] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:48:06,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:48:06,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:48:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543329903] [2025-04-13 17:48:06,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:06,853 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 17:48:06,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:06,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 17:48:06,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 17:48:06,854 INFO L87 Difference]: Start difference. First operand 44 states and 93 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2025-04-13 17:48:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:06,969 INFO L93 Difference]: Finished difference Result 73 states and 147 transitions. [2025-04-13 17:48:06,969 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:06,969 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 16 [2025-04-13 17:48:06,969 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:06,970 INFO L225 Difference]: With dead ends: 73 [2025-04-13 17:48:06,970 INFO L226 Difference]: Without dead ends: 58 [2025-04-13 17:48:06,970 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-04-13 17:48:06,970 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:06,971 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:06,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-04-13 17:48:06,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2025-04-13 17:48:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.1777777777777776) internal successors, (98), 45 states have internal predecessors, (98), 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) [2025-04-13 17:48:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 98 transitions. [2025-04-13 17:48:06,978 INFO L79 Accepts]: Start accepts. Automaton has 46 states and 98 transitions. Word has length 16 [2025-04-13 17:48:06,978 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:06,978 INFO L485 AbstractCegarLoop]: Abstraction has 46 states and 98 transitions. [2025-04-13 17:48:06,978 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2025-04-13 17:48:06,980 INFO L278 IsEmpty]: Start isEmpty. Operand 46 states and 98 transitions. [2025-04-13 17:48:06,981 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:48:06,981 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:06,981 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:06,981 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 17:48:06,981 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:06,982 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1025114406, now seen corresponding path program 5 times [2025-04-13 17:48:06,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:06,982 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349868983] [2025-04-13 17:48:06,982 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:06,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:06,991 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:48:07,013 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:48:07,013 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:07,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:48:07,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:07,372 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349868983] [2025-04-13 17:48:07,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349868983] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:07,372 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395916316] [2025-04-13 17:48:07,372 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:07,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:07,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:07,374 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) [2025-04-13 17:48:07,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-13 17:48:07,434 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:48:07,455 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:48:07,455 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:07,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:07,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 17:48:07,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:07,614 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-13 17:48:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395916316] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:48:07,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-13 17:48:07,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2025-04-13 17:48:07,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377694529] [2025-04-13 17:48:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:07,615 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 17:48:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:07,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 17:48:07,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:48:07,615 INFO L87 Difference]: Start difference. First operand 46 states and 98 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2025-04-13 17:48:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:07,740 INFO L93 Difference]: Finished difference Result 70 states and 150 transitions. [2025-04-13 17:48:07,740 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:07,740 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 16 [2025-04-13 17:48:07,740 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:07,741 INFO L225 Difference]: With dead ends: 70 [2025-04-13 17:48:07,741 INFO L226 Difference]: Without dead ends: 65 [2025-04-13 17:48:07,741 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-04-13 17:48:07,742 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:07,742 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-04-13 17:48:07,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2025-04-13 17:48:07,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 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) [2025-04-13 17:48:07,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 110 transitions. [2025-04-13 17:48:07,755 INFO L79 Accepts]: Start accepts. Automaton has 50 states and 110 transitions. Word has length 16 [2025-04-13 17:48:07,755 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:07,755 INFO L485 AbstractCegarLoop]: Abstraction has 50 states and 110 transitions. [2025-04-13 17:48:07,755 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2025-04-13 17:48:07,755 INFO L278 IsEmpty]: Start isEmpty. Operand 50 states and 110 transitions. [2025-04-13 17:48:07,756 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:48:07,756 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:07,756 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:07,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:07,956 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-04-13 17:48:07,957 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:07,957 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:07,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1989175679, now seen corresponding path program 1 times [2025-04-13 17:48:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:07,957 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228342996] [2025-04-13 17:48:07,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:48:07,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:07,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 17:48:07,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:48:07,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:07,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:08,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:08,074 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228342996] [2025-04-13 17:48:08,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228342996] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:48:08,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:48:08,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:48:08,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896433645] [2025-04-13 17:48:08,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:08,074 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:48:08,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:08,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:48:08,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:48:08,075 INFO L87 Difference]: Start difference. First operand 50 states and 110 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:08,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:08,177 INFO L93 Difference]: Finished difference Result 78 states and 165 transitions. [2025-04-13 17:48:08,177 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:08,178 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) Word has length 17 [2025-04-13 17:48:08,178 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:08,178 INFO L225 Difference]: With dead ends: 78 [2025-04-13 17:48:08,178 INFO L226 Difference]: Without dead ends: 67 [2025-04-13 17:48:08,178 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:48:08,179 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:08,179 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-04-13 17:48:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2025-04-13 17:48:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 51 states have internal predecessors, (115), 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) [2025-04-13 17:48:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 115 transitions. [2025-04-13 17:48:08,187 INFO L79 Accepts]: Start accepts. Automaton has 52 states and 115 transitions. Word has length 17 [2025-04-13 17:48:08,187 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:08,187 INFO L485 AbstractCegarLoop]: Abstraction has 52 states and 115 transitions. [2025-04-13 17:48:08,187 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:08,187 INFO L278 IsEmpty]: Start isEmpty. Operand 52 states and 115 transitions. [2025-04-13 17:48:08,188 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:48:08,188 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:08,188 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:08,188 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 17:48:08,188 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:08,188 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1936589759, now seen corresponding path program 2 times [2025-04-13 17:48:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:08,188 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497581728] [2025-04-13 17:48:08,188 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:08,200 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:48:08,230 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:48:08,230 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:08,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:08,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:08,329 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497581728] [2025-04-13 17:48:08,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497581728] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:08,329 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792491038] [2025-04-13 17:48:08,329 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:08,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:08,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:08,331 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) [2025-04-13 17:48:08,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-13 17:48:08,389 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:48:08,409 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:48:08,409 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:08,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:08,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 17:48:08,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:08,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:08,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792491038] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:08,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 17:48:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-04-13 17:48:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575335520] [2025-04-13 17:48:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:08,563 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:48:08,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:08,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:48:08,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-04-13 17:48:08,564 INFO L87 Difference]: Start difference. First operand 52 states and 115 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:08,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:08,662 INFO L93 Difference]: Finished difference Result 79 states and 172 transitions. [2025-04-13 17:48:08,663 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:08,663 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) Word has length 17 [2025-04-13 17:48:08,663 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:08,663 INFO L225 Difference]: With dead ends: 79 [2025-04-13 17:48:08,663 INFO L226 Difference]: Without dead ends: 71 [2025-04-13 17:48:08,664 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:48:08,664 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:08,664 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:08,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-04-13 17:48:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2025-04-13 17:48:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.30188679245283) internal successors, (122), 53 states have internal predecessors, (122), 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) [2025-04-13 17:48:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 122 transitions. [2025-04-13 17:48:08,671 INFO L79 Accepts]: Start accepts. Automaton has 54 states and 122 transitions. Word has length 17 [2025-04-13 17:48:08,671 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:08,671 INFO L485 AbstractCegarLoop]: Abstraction has 54 states and 122 transitions. [2025-04-13 17:48:08,671 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:08,671 INFO L278 IsEmpty]: Start isEmpty. Operand 54 states and 122 transitions. [2025-04-13 17:48:08,671 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:48:08,671 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:08,672 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:08,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:08,873 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:08,873 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:08,874 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1712614190, now seen corresponding path program 1 times [2025-04-13 17:48:08,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:08,874 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491417411] [2025-04-13 17:48:08,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:48:08,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:08,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 17:48:08,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:48:08,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:08,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:08,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:08,965 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491417411] [2025-04-13 17:48:08,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491417411] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:48:08,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:48:08,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:48:08,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439533447] [2025-04-13 17:48:08,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:08,966 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:48:08,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:08,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:48:08,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:48:08,966 INFO L87 Difference]: Start difference. First operand 54 states and 122 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:09,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:09,059 INFO L93 Difference]: Finished difference Result 78 states and 165 transitions. [2025-04-13 17:48:09,059 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:09,059 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) Word has length 17 [2025-04-13 17:48:09,059 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:09,060 INFO L225 Difference]: With dead ends: 78 [2025-04-13 17:48:09,060 INFO L226 Difference]: Without dead ends: 69 [2025-04-13 17:48:09,060 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:48:09,060 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:09,061 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-04-13 17:48:09,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2025-04-13 17:48:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 53 states have internal predecessors, (120), 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) [2025-04-13 17:48:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 120 transitions. [2025-04-13 17:48:09,067 INFO L79 Accepts]: Start accepts. Automaton has 54 states and 120 transitions. Word has length 17 [2025-04-13 17:48:09,067 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:09,067 INFO L485 AbstractCegarLoop]: Abstraction has 54 states and 120 transitions. [2025-04-13 17:48:09,067 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:09,067 INFO L278 IsEmpty]: Start isEmpty. Operand 54 states and 120 transitions. [2025-04-13 17:48:09,067 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:48:09,068 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:09,068 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:09,068 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 17:48:09,068 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:09,068 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:09,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1601791670, now seen corresponding path program 2 times [2025-04-13 17:48:09,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:09,068 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204989520] [2025-04-13 17:48:09,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:09,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:09,075 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:48:09,088 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:48:09,089 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:09,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:09,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:09,161 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204989520] [2025-04-13 17:48:09,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204989520] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:09,161 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259478761] [2025-04-13 17:48:09,161 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:09,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:09,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:09,166 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) [2025-04-13 17:48:09,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-13 17:48:09,230 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:48:09,253 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:48:09,253 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:09,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:09,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 17:48:09,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:09,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:09,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259478761] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:09,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 17:48:09,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-04-13 17:48:09,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88406517] [2025-04-13 17:48:09,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:09,367 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:48:09,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:09,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:48:09,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-04-13 17:48:09,367 INFO L87 Difference]: Start difference. First operand 54 states and 120 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:09,462 INFO L93 Difference]: Finished difference Result 69 states and 151 transitions. [2025-04-13 17:48:09,462 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:09,462 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) Word has length 17 [2025-04-13 17:48:09,462 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:09,462 INFO L225 Difference]: With dead ends: 69 [2025-04-13 17:48:09,462 INFO L226 Difference]: Without dead ends: 62 [2025-04-13 17:48:09,463 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:48:09,463 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:09,463 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:09,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-04-13 17:48:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2025-04-13 17:48:09,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.215686274509804) internal successors, (113), 51 states have internal predecessors, (113), 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) [2025-04-13 17:48:09,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 113 transitions. [2025-04-13 17:48:09,470 INFO L79 Accepts]: Start accepts. Automaton has 52 states and 113 transitions. Word has length 17 [2025-04-13 17:48:09,470 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:09,470 INFO L485 AbstractCegarLoop]: Abstraction has 52 states and 113 transitions. [2025-04-13 17:48:09,470 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:09,470 INFO L278 IsEmpty]: Start isEmpty. Operand 52 states and 113 transitions. [2025-04-13 17:48:09,471 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:48:09,471 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:09,471 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:09,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:09,671 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:09,672 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:09,673 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:09,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1635093203, now seen corresponding path program 3 times [2025-04-13 17:48:09,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:09,673 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084980179] [2025-04-13 17:48:09,673 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:48:09,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:09,681 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:48:09,693 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 17 statements. [2025-04-13 17:48:09,693 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:48:09,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:09,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:09,759 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084980179] [2025-04-13 17:48:09,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084980179] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:48:09,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:48:09,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:48:09,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220048513] [2025-04-13 17:48:09,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:09,760 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:48:09,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:09,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:48:09,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:48:09,760 INFO L87 Difference]: Start difference. First operand 52 states and 113 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:09,840 INFO L93 Difference]: Finished difference Result 65 states and 137 transitions. [2025-04-13 17:48:09,840 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:09,840 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) Word has length 17 [2025-04-13 17:48:09,840 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:09,841 INFO L225 Difference]: With dead ends: 65 [2025-04-13 17:48:09,841 INFO L226 Difference]: Without dead ends: 54 [2025-04-13 17:48:09,841 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:48:09,841 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:09,841 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-04-13 17:48:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2025-04-13 17:48:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.2264150943396226) internal successors, (118), 53 states have internal predecessors, (118), 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) [2025-04-13 17:48:09,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 118 transitions. [2025-04-13 17:48:09,846 INFO L79 Accepts]: Start accepts. Automaton has 54 states and 118 transitions. Word has length 17 [2025-04-13 17:48:09,846 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:09,846 INFO L485 AbstractCegarLoop]: Abstraction has 54 states and 118 transitions. [2025-04-13 17:48:09,847 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:09,847 INFO L278 IsEmpty]: Start isEmpty. Operand 54 states and 118 transitions. [2025-04-13 17:48:09,847 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:48:09,847 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:09,847 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:09,847 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-13 17:48:09,847 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:09,847 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:09,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1687679123, now seen corresponding path program 4 times [2025-04-13 17:48:09,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:09,848 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337630561] [2025-04-13 17:48:09,848 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:09,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:09,854 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:48:09,858 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:48:09,858 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:09,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:09,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:09,923 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337630561] [2025-04-13 17:48:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337630561] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:09,923 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201406326] [2025-04-13 17:48:09,924 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:09,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:09,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:09,926 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) [2025-04-13 17:48:09,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-13 17:48:09,984 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:48:10,004 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:48:10,004 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:10,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:10,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 17:48:10,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:10,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:10,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201406326] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:10,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 17:48:10,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2025-04-13 17:48:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183066307] [2025-04-13 17:48:10,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:10,084 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:48:10,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:10,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:48:10,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:48:10,084 INFO L87 Difference]: Start difference. First operand 54 states and 118 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:10,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:10,167 INFO L93 Difference]: Finished difference Result 86 states and 182 transitions. [2025-04-13 17:48:10,168 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:10,168 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) Word has length 17 [2025-04-13 17:48:10,168 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:10,168 INFO L225 Difference]: With dead ends: 86 [2025-04-13 17:48:10,168 INFO L226 Difference]: Without dead ends: 78 [2025-04-13 17:48:10,169 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:48:10,169 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:10,169 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:10,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-04-13 17:48:10,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 54. [2025-04-13 17:48:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.30188679245283) internal successors, (122), 53 states have internal predecessors, (122), 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) [2025-04-13 17:48:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 122 transitions. [2025-04-13 17:48:10,177 INFO L79 Accepts]: Start accepts. Automaton has 54 states and 122 transitions. Word has length 17 [2025-04-13 17:48:10,178 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:10,178 INFO L485 AbstractCegarLoop]: Abstraction has 54 states and 122 transitions. [2025-04-13 17:48:10,178 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:10,178 INFO L278 IsEmpty]: Start isEmpty. Operand 54 states and 122 transitions. [2025-04-13 17:48:10,178 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:48:10,178 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:10,178 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:10,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:10,380 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-04-13 17:48:10,381 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:10,381 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:10,381 INFO L85 PathProgramCache]: Analyzing trace with hash 966738097, now seen corresponding path program 5 times [2025-04-13 17:48:10,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:10,381 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802824796] [2025-04-13 17:48:10,381 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:10,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:10,387 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:48:10,396 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:48:10,396 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:10,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:10,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:10,466 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802824796] [2025-04-13 17:48:10,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802824796] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:10,466 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185108252] [2025-04-13 17:48:10,466 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:10,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:10,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:10,467 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) [2025-04-13 17:48:10,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-13 17:48:10,526 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:48:10,545 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:48:10,545 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:10,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:10,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 17:48:10,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:10,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:10,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:10,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185108252] provided 1 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:10,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-04-13 17:48:10,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2025-04-13 17:48:10,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774712552] [2025-04-13 17:48:10,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:48:10,592 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:48:10,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:10,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:48:10,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-04-13 17:48:10,593 INFO L87 Difference]: Start difference. First operand 54 states and 122 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:10,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:10,654 INFO L93 Difference]: Finished difference Result 68 states and 149 transitions. [2025-04-13 17:48:10,655 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:48:10,655 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) Word has length 17 [2025-04-13 17:48:10,655 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:10,655 INFO L225 Difference]: With dead ends: 68 [2025-04-13 17:48:10,655 INFO L226 Difference]: Without dead ends: 60 [2025-04-13 17:48:10,655 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:48:10,656 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:10,656 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:48:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-04-13 17:48:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2025-04-13 17:48:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.215686274509804) internal successors, (113), 51 states have internal predecessors, (113), 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) [2025-04-13 17:48:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 113 transitions. [2025-04-13 17:48:10,661 INFO L79 Accepts]: Start accepts. Automaton has 52 states and 113 transitions. Word has length 17 [2025-04-13 17:48:10,661 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:10,661 INFO L485 AbstractCegarLoop]: Abstraction has 52 states and 113 transitions. [2025-04-13 17:48:10,661 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-04-13 17:48:10,661 INFO L278 IsEmpty]: Start isEmpty. Operand 52 states and 113 transitions. [2025-04-13 17:48:10,661 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 17:48:10,662 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:10,662 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:10,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:10,862 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:10,862 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:10,862 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:10,863 INFO L85 PathProgramCache]: Analyzing trace with hash 786039783, now seen corresponding path program 1 times [2025-04-13 17:48:10,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:10,863 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028387237] [2025-04-13 17:48:10,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:48:10,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:10,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 17:48:10,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:10,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:10,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:11,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:11,462 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028387237] [2025-04-13 17:48:11,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028387237] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:11,462 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757823253] [2025-04-13 17:48:11,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:48:11,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:11,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:11,464 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) [2025-04-13 17:48:11,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-13 17:48:11,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 17:48:11,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:11,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:11,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:11,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-13 17:48:11,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:11,802 INFO L354 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 143 treesize of output 91 [2025-04-13 17:48:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:11,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:12,577 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:12,577 INFO L354 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 208 treesize of output 132 [2025-04-13 17:48:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:12,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757823253] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:12,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:12,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2025-04-13 17:48:12,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564358916] [2025-04-13 17:48:12,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:12,694 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:48:12,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:12,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:48:12,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:48:12,695 INFO L87 Difference]: Start difference. First operand 52 states and 113 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 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) [2025-04-13 17:48:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:14,528 INFO L93 Difference]: Finished difference Result 154 states and 334 transitions. [2025-04-13 17:48:14,529 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 17:48:14,529 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 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) Word has length 18 [2025-04-13 17:48:14,529 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:14,530 INFO L225 Difference]: With dead ends: 154 [2025-04-13 17:48:14,530 INFO L226 Difference]: Without dead ends: 123 [2025-04-13 17:48:14,530 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=332, Invalid=1308, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 17:48:14,531 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 162 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:14,531 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 0 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:48:14,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-04-13 17:48:14,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 72. [2025-04-13 17:48:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.295774647887324) internal successors, (163), 71 states have internal predecessors, (163), 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) [2025-04-13 17:48:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 163 transitions. [2025-04-13 17:48:14,548 INFO L79 Accepts]: Start accepts. Automaton has 72 states and 163 transitions. Word has length 18 [2025-04-13 17:48:14,549 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:14,549 INFO L485 AbstractCegarLoop]: Abstraction has 72 states and 163 transitions. [2025-04-13 17:48:14,549 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 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) [2025-04-13 17:48:14,549 INFO L278 IsEmpty]: Start isEmpty. Operand 72 states and 163 transitions. [2025-04-13 17:48:14,550 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 17:48:14,550 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:14,550 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:14,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:14,750 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:14,750 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:14,751 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:14,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1649033557, now seen corresponding path program 2 times [2025-04-13 17:48:14,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:14,751 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103054901] [2025-04-13 17:48:14,751 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:14,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:14,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 17:48:14,778 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:14,778 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:14,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:15,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:15,340 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103054901] [2025-04-13 17:48:15,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103054901] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:15,341 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326041566] [2025-04-13 17:48:15,341 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:15,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:15,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:15,343 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) [2025-04-13 17:48:15,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-13 17:48:15,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 17:48:15,424 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:15,424 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:15,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:15,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-04-13 17:48:15,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:15,628 INFO L354 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 116 treesize of output 76 [2025-04-13 17:48:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:15,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:16,355 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:16,355 INFO L354 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 212 treesize of output 140 [2025-04-13 17:48:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:16,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326041566] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:16,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:16,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2025-04-13 17:48:16,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659383434] [2025-04-13 17:48:16,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:16,617 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:48:16,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:16,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:48:16,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:48:16,618 INFO L87 Difference]: Start difference. First operand 72 states and 163 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 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) [2025-04-13 17:48:17,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:17,449 INFO L93 Difference]: Finished difference Result 112 states and 246 transitions. [2025-04-13 17:48:17,451 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 17:48:17,451 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 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) Word has length 18 [2025-04-13 17:48:17,451 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:17,452 INFO L225 Difference]: With dead ends: 112 [2025-04-13 17:48:17,452 INFO L226 Difference]: Without dead ends: 107 [2025-04-13 17:48:17,453 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=206, Invalid=786, Unknown=0, NotChecked=0, Total=992 [2025-04-13 17:48:17,453 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:17,453 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:48:17,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-04-13 17:48:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76. [2025-04-13 17:48:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.3333333333333335) internal successors, (175), 75 states have internal predecessors, (175), 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) [2025-04-13 17:48:17,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 175 transitions. [2025-04-13 17:48:17,475 INFO L79 Accepts]: Start accepts. Automaton has 76 states and 175 transitions. Word has length 18 [2025-04-13 17:48:17,476 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:17,476 INFO L485 AbstractCegarLoop]: Abstraction has 76 states and 175 transitions. [2025-04-13 17:48:17,476 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 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) [2025-04-13 17:48:17,476 INFO L278 IsEmpty]: Start isEmpty. Operand 76 states and 175 transitions. [2025-04-13 17:48:17,476 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 17:48:17,476 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:17,476 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:17,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:17,682 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 17:48:17,682 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:17,682 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:17,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1701619477, now seen corresponding path program 3 times [2025-04-13 17:48:17,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:17,682 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628204341] [2025-04-13 17:48:17,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:48:17,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:17,691 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-04-13 17:48:17,703 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 18 statements. [2025-04-13 17:48:17,703 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:48:17,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:18,133 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628204341] [2025-04-13 17:48:18,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628204341] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:18,133 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361904972] [2025-04-13 17:48:18,133 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:48:18,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:18,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:18,135 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) [2025-04-13 17:48:18,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-13 17:48:18,194 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-04-13 17:48:18,214 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 18 statements. [2025-04-13 17:48:18,214 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:48:18,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:18,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-13 17:48:18,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:18,463 INFO L354 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 161 treesize of output 105 [2025-04-13 17:48:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:18,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:19,411 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:19,412 INFO L354 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 287 treesize of output 199 [2025-04-13 17:48:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:19,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361904972] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:19,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:19,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2025-04-13 17:48:19,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425715148] [2025-04-13 17:48:19,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:19,610 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:48:19,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:19,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:48:19,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:48:19,611 INFO L87 Difference]: Start difference. First operand 76 states and 175 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) [2025-04-13 17:48:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:21,686 INFO L93 Difference]: Finished difference Result 200 states and 413 transitions. [2025-04-13 17:48:21,686 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 17:48:21,686 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) Word has length 18 [2025-04-13 17:48:21,686 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:21,687 INFO L225 Difference]: With dead ends: 200 [2025-04-13 17:48:21,687 INFO L226 Difference]: Without dead ends: 173 [2025-04-13 17:48:21,688 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=321, Invalid=1319, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 17:48:21,688 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:21,689 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:48:21,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-04-13 17:48:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 84. [2025-04-13 17:48:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 2.4698795180722892) internal successors, (205), 83 states have internal predecessors, (205), 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) [2025-04-13 17:48:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 205 transitions. [2025-04-13 17:48:21,711 INFO L79 Accepts]: Start accepts. Automaton has 84 states and 205 transitions. Word has length 18 [2025-04-13 17:48:21,711 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:21,711 INFO L485 AbstractCegarLoop]: Abstraction has 84 states and 205 transitions. [2025-04-13 17:48:21,711 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) [2025-04-13 17:48:21,712 INFO L278 IsEmpty]: Start isEmpty. Operand 84 states and 205 transitions. [2025-04-13 17:48:21,712 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 17:48:21,712 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:21,712 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:21,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:21,912 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 17:48:21,912 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:21,913 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash 94098291, now seen corresponding path program 4 times [2025-04-13 17:48:21,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:21,913 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658796710] [2025-04-13 17:48:21,913 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:21,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:21,919 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 17:48:21,926 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:21,927 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:21,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:22,315 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658796710] [2025-04-13 17:48:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658796710] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:22,315 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629346660] [2025-04-13 17:48:22,315 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:22,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:22,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:22,320 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) [2025-04-13 17:48:22,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-13 17:48:22,378 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 17:48:22,399 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:22,399 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:22,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:22,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-04-13 17:48:22,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:22,419 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:48:22,433 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:48:22,447 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:48:22,680 INFO L354 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 99 treesize of output 63 [2025-04-13 17:48:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:48:22,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:23,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629346660] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:23,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:23,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 7] total 25 [2025-04-13 17:48:23,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746880701] [2025-04-13 17:48:23,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:23,529 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:48:23,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:23,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:48:23,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:48:23,529 INFO L87 Difference]: Start difference. First operand 84 states and 205 transitions. Second operand has 26 states, 25 states have (on average 1.88) internal successors, (47), 26 states have internal predecessors, (47), 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) [2025-04-13 17:48:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:25,180 INFO L93 Difference]: Finished difference Result 160 states and 380 transitions. [2025-04-13 17:48:25,180 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 17:48:25,180 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.88) internal successors, (47), 26 states have internal predecessors, (47), 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) Word has length 18 [2025-04-13 17:48:25,180 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:25,181 INFO L225 Difference]: With dead ends: 160 [2025-04-13 17:48:25,181 INFO L226 Difference]: Without dead ends: 141 [2025-04-13 17:48:25,182 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=354, Invalid=1626, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 17:48:25,182 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:25,182 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:48:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-04-13 17:48:25,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 94. [2025-04-13 17:48:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.5161290322580645) internal successors, (234), 93 states have internal predecessors, (234), 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) [2025-04-13 17:48:25,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 234 transitions. [2025-04-13 17:48:25,209 INFO L79 Accepts]: Start accepts. Automaton has 94 states and 234 transitions. Word has length 18 [2025-04-13 17:48:25,209 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:25,209 INFO L485 AbstractCegarLoop]: Abstraction has 94 states and 234 transitions. [2025-04-13 17:48:25,209 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.88) internal successors, (47), 26 states have internal predecessors, (47), 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) [2025-04-13 17:48:25,210 INFO L278 IsEmpty]: Start isEmpty. Operand 94 states and 234 transitions. [2025-04-13 17:48:25,210 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 17:48:25,210 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:25,210 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:25,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 17:48:25,411 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-04-13 17:48:25,411 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:25,412 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:25,412 INFO L85 PathProgramCache]: Analyzing trace with hash -16724229, now seen corresponding path program 5 times [2025-04-13 17:48:25,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:25,412 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285466638] [2025-04-13 17:48:25,412 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:25,418 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-04-13 17:48:25,430 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:25,430 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:25,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:48:25,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:25,953 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285466638] [2025-04-13 17:48:25,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285466638] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:25,953 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451565903] [2025-04-13 17:48:25,953 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:25,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:25,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:25,955 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) [2025-04-13 17:48:25,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-13 17:48:26,018 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-04-13 17:48:26,042 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:26,043 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:26,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:26,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 17:48:26,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:26,054 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:48:26,058 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 17:48:26,074 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 17:48:26,234 INFO L354 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 169 treesize of output 109 [2025-04-13 17:48:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:48:26,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:27,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451565903] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:27,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:27,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 22 [2025-04-13 17:48:27,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94300789] [2025-04-13 17:48:27,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:27,525 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:48:27,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:27,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:48:27,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:48:27,526 INFO L87 Difference]: Start difference. First operand 94 states and 234 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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) [2025-04-13 17:48:30,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:30,091 INFO L93 Difference]: Finished difference Result 195 states and 445 transitions. [2025-04-13 17:48:30,091 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 17:48:30,092 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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) Word has length 18 [2025-04-13 17:48:30,092 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:30,093 INFO L225 Difference]: With dead ends: 195 [2025-04-13 17:48:30,093 INFO L226 Difference]: Without dead ends: 170 [2025-04-13 17:48:30,093 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=292, Invalid=1430, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 17:48:30,094 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:30,094 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:48:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-04-13 17:48:30,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 102. [2025-04-13 17:48:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.5742574257425743) internal successors, (260), 101 states have internal predecessors, (260), 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) [2025-04-13 17:48:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 260 transitions. [2025-04-13 17:48:30,128 INFO L79 Accepts]: Start accepts. Automaton has 102 states and 260 transitions. Word has length 18 [2025-04-13 17:48:30,128 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:30,128 INFO L485 AbstractCegarLoop]: Abstraction has 102 states and 260 transitions. [2025-04-13 17:48:30,128 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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) [2025-04-13 17:48:30,128 INFO L278 IsEmpty]: Start isEmpty. Operand 102 states and 260 transitions. [2025-04-13 17:48:30,129 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 17:48:30,129 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:30,129 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:30,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:30,329 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-13 17:48:30,329 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:30,330 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:30,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1962748093, now seen corresponding path program 6 times [2025-04-13 17:48:30,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:30,330 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353225807] [2025-04-13 17:48:30,330 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:48:30,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:30,337 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 3 equivalence classes. [2025-04-13 17:48:30,358 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:30,358 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:48:30,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:30,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:30,844 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353225807] [2025-04-13 17:48:30,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353225807] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:30,844 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670132480] [2025-04-13 17:48:30,844 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:48:30,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:30,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:30,846 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) [2025-04-13 17:48:30,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-04-13 17:48:30,904 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 3 equivalence classes. [2025-04-13 17:48:30,921 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:30,921 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:48:30,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:30,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 17:48:30,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:31,101 INFO L354 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 145 treesize of output 93 [2025-04-13 17:48:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:31,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:31,818 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:31,818 INFO L354 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 212 treesize of output 140 [2025-04-13 17:48:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:32,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670132480] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:32,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:32,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2025-04-13 17:48:32,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768771051] [2025-04-13 17:48:32,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:32,043 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:48:32,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:32,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:48:32,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:48:32,044 INFO L87 Difference]: Start difference. First operand 102 states and 260 transitions. Second operand has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 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) [2025-04-13 17:48:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:32,759 INFO L93 Difference]: Finished difference Result 142 states and 334 transitions. [2025-04-13 17:48:32,759 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 17:48:32,759 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 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) Word has length 18 [2025-04-13 17:48:32,760 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:32,760 INFO L225 Difference]: With dead ends: 142 [2025-04-13 17:48:32,760 INFO L226 Difference]: Without dead ends: 137 [2025-04-13 17:48:32,761 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 17:48:32,761 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:32,761 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:48:32,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-04-13 17:48:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 107. [2025-04-13 17:48:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.5660377358490565) internal successors, (272), 106 states have internal predecessors, (272), 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) [2025-04-13 17:48:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 272 transitions. [2025-04-13 17:48:32,800 INFO L79 Accepts]: Start accepts. Automaton has 107 states and 272 transitions. Word has length 18 [2025-04-13 17:48:32,800 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:32,800 INFO L485 AbstractCegarLoop]: Abstraction has 107 states and 272 transitions. [2025-04-13 17:48:32,800 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 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) [2025-04-13 17:48:32,800 INFO L278 IsEmpty]: Start isEmpty. Operand 107 states and 272 transitions. [2025-04-13 17:48:32,800 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 17:48:32,800 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:32,800 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:32,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-04-13 17:48:33,001 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:33,001 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:33,001 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1910162173, now seen corresponding path program 7 times [2025-04-13 17:48:33,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:33,001 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205847798] [2025-04-13 17:48:33,001 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:48:33,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:33,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 17:48:33,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:33,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:33,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:33,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:33,456 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205847798] [2025-04-13 17:48:33,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205847798] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:33,456 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054759372] [2025-04-13 17:48:33,456 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:48:33,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:33,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:33,458 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) [2025-04-13 17:48:33,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-04-13 17:48:33,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 17:48:33,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:33,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:33,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:33,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-13 17:48:33,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:33,684 INFO L354 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 169 treesize of output 109 [2025-04-13 17:48:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:33,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:34,569 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:34,569 INFO L354 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 268 treesize of output 180 [2025-04-13 17:48:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:34,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054759372] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:34,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:34,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2025-04-13 17:48:34,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146097331] [2025-04-13 17:48:34,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:34,733 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:48:34,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:34,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:48:34,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:48:34,734 INFO L87 Difference]: Start difference. First operand 107 states and 272 transitions. Second operand has 21 states, 20 states have (on average 1.9) internal successors, (38), 21 states have internal predecessors, (38), 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) [2025-04-13 17:48:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:36,379 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2025-04-13 17:48:36,379 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 17:48:36,380 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 21 states have internal predecessors, (38), 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) Word has length 18 [2025-04-13 17:48:36,380 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:36,381 INFO L225 Difference]: With dead ends: 191 [2025-04-13 17:48:36,381 INFO L226 Difference]: Without dead ends: 168 [2025-04-13 17:48:36,381 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=241, Invalid=1165, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 17:48:36,381 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 93 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:36,382 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 0 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:48:36,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-04-13 17:48:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 111. [2025-04-13 17:48:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.581818181818182) internal successors, (284), 110 states have internal predecessors, (284), 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) [2025-04-13 17:48:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 284 transitions. [2025-04-13 17:48:36,423 INFO L79 Accepts]: Start accepts. Automaton has 111 states and 284 transitions. Word has length 18 [2025-04-13 17:48:36,423 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:36,423 INFO L485 AbstractCegarLoop]: Abstraction has 111 states and 284 transitions. [2025-04-13 17:48:36,424 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.9) internal successors, (38), 21 states have internal predecessors, (38), 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) [2025-04-13 17:48:36,424 INFO L278 IsEmpty]: Start isEmpty. Operand 111 states and 284 transitions. [2025-04-13 17:48:36,424 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 17:48:36,424 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:36,424 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:36,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:36,625 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2025-04-13 17:48:36,626 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:36,626 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:36,626 INFO L85 PathProgramCache]: Analyzing trace with hash 777283937, now seen corresponding path program 8 times [2025-04-13 17:48:36,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:36,626 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562979264] [2025-04-13 17:48:36,626 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:36,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:36,632 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 17:48:36,643 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:36,644 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:36,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:37,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:37,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562979264] [2025-04-13 17:48:37,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562979264] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:37,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785235924] [2025-04-13 17:48:37,012 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:37,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:37,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:37,014 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) [2025-04-13 17:48:37,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-04-13 17:48:37,074 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 17:48:37,091 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:37,091 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:37,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:37,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-13 17:48:37,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:37,262 INFO L354 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 143 treesize of output 91 [2025-04-13 17:48:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:37,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:37,954 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:37,954 INFO L354 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 372 treesize of output 220 [2025-04-13 17:48:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:38,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785235924] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:38,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:38,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2025-04-13 17:48:38,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034100801] [2025-04-13 17:48:38,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:38,192 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:48:38,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:38,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:48:38,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:48:38,193 INFO L87 Difference]: Start difference. First operand 111 states and 284 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) [2025-04-13 17:48:38,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:38,836 INFO L93 Difference]: Finished difference Result 158 states and 374 transitions. [2025-04-13 17:48:38,836 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 17:48:38,836 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) Word has length 18 [2025-04-13 17:48:38,836 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:38,837 INFO L225 Difference]: With dead ends: 158 [2025-04-13 17:48:38,837 INFO L226 Difference]: Without dead ends: 139 [2025-04-13 17:48:38,837 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2025-04-13 17:48:38,838 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:38,838 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:48:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-04-13 17:48:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 117. [2025-04-13 17:48:38,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.5775862068965516) internal successors, (299), 116 states have internal predecessors, (299), 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) [2025-04-13 17:48:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 299 transitions. [2025-04-13 17:48:38,883 INFO L79 Accepts]: Start accepts. Automaton has 117 states and 299 transitions. Word has length 18 [2025-04-13 17:48:38,883 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:38,883 INFO L485 AbstractCegarLoop]: Abstraction has 117 states and 299 transitions. [2025-04-13 17:48:38,883 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) [2025-04-13 17:48:38,883 INFO L278 IsEmpty]: Start isEmpty. Operand 117 states and 299 transitions. [2025-04-13 17:48:38,883 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 17:48:38,883 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:38,884 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:38,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:39,084 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:39,084 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:39,084 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash 666461417, now seen corresponding path program 9 times [2025-04-13 17:48:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:39,085 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407495294] [2025-04-13 17:48:39,085 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:48:39,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:39,091 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-04-13 17:48:39,101 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 18 statements. [2025-04-13 17:48:39,101 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:48:39,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:39,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:39,449 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407495294] [2025-04-13 17:48:39,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407495294] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:39,449 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878825040] [2025-04-13 17:48:39,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:48:39,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:39,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:39,451 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) [2025-04-13 17:48:39,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-04-13 17:48:39,510 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-04-13 17:48:39,526 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 18 statements. [2025-04-13 17:48:39,526 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:48:39,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:39,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 17:48:39,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:39,645 INFO L354 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 117 treesize of output 77 [2025-04-13 17:48:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:39,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:40,321 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:40,322 INFO L354 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 293 treesize of output 197 [2025-04-13 17:48:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:40,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878825040] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:40,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:40,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2025-04-13 17:48:40,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772480865] [2025-04-13 17:48:40,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:40,555 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:48:40,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:40,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:48:40,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:48:40,556 INFO L87 Difference]: Start difference. First operand 117 states and 299 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) [2025-04-13 17:48:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:41,054 INFO L93 Difference]: Finished difference Result 144 states and 347 transitions. [2025-04-13 17:48:41,054 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 17:48:41,054 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) Word has length 18 [2025-04-13 17:48:41,054 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:41,055 INFO L225 Difference]: With dead ends: 144 [2025-04-13 17:48:41,055 INFO L226 Difference]: Without dead ends: 139 [2025-04-13 17:48:41,055 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2025-04-13 17:48:41,056 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:41,056 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:48:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-04-13 17:48:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2025-04-13 17:48:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 2.610169491525424) internal successors, (308), 118 states have internal predecessors, (308), 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) [2025-04-13 17:48:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 308 transitions. [2025-04-13 17:48:41,109 INFO L79 Accepts]: Start accepts. Automaton has 119 states and 308 transitions. Word has length 18 [2025-04-13 17:48:41,109 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:41,109 INFO L485 AbstractCegarLoop]: Abstraction has 119 states and 308 transitions. [2025-04-13 17:48:41,109 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 20 states have internal predecessors, (37), 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) [2025-04-13 17:48:41,109 INFO L278 IsEmpty]: Start isEmpty. Operand 119 states and 308 transitions. [2025-04-13 17:48:41,109 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 17:48:41,109 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:41,109 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:41,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-13 17:48:41,309 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:41,310 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:41,310 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:41,310 INFO L85 PathProgramCache]: Analyzing trace with hash -97051389, now seen corresponding path program 10 times [2025-04-13 17:48:41,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:41,310 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135075407] [2025-04-13 17:48:41,310 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:41,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:41,316 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 17:48:41,323 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:41,323 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:41,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:41,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:41,701 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135075407] [2025-04-13 17:48:41,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135075407] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:41,701 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302040089] [2025-04-13 17:48:41,701 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:41,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:41,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:41,702 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) [2025-04-13 17:48:41,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-04-13 17:48:41,766 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 17:48:41,782 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 17:48:41,782 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:41,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:41,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-04-13 17:48:41,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:41,958 INFO L354 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 144 treesize of output 92 [2025-04-13 17:48:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:42,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:42,454 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:48:42,454 INFO L354 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 201 treesize of output 124 [2025-04-13 17:48:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:42,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302040089] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:42,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:42,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 22 [2025-04-13 17:48:42,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531863110] [2025-04-13 17:48:42,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:42,501 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:48:42,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:42,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:48:42,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:48:42,501 INFO L87 Difference]: Start difference. First operand 119 states and 308 transitions. Second operand has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 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) [2025-04-13 17:48:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:44,053 INFO L93 Difference]: Finished difference Result 248 states and 570 transitions. [2025-04-13 17:48:44,053 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 17:48:44,054 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 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) Word has length 18 [2025-04-13 17:48:44,054 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:44,055 INFO L225 Difference]: With dead ends: 248 [2025-04-13 17:48:44,055 INFO L226 Difference]: Without dead ends: 223 [2025-04-13 17:48:44,055 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=499, Invalid=1853, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 17:48:44,056 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:44,056 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:48:44,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-04-13 17:48:44,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 125. [2025-04-13 17:48:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.6048387096774195) internal successors, (323), 124 states have internal predecessors, (323), 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) [2025-04-13 17:48:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 323 transitions. [2025-04-13 17:48:44,103 INFO L79 Accepts]: Start accepts. Automaton has 125 states and 323 transitions. Word has length 18 [2025-04-13 17:48:44,103 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:44,103 INFO L485 AbstractCegarLoop]: Abstraction has 125 states and 323 transitions. [2025-04-13 17:48:44,103 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 23 states have internal predecessors, (45), 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) [2025-04-13 17:48:44,103 INFO L278 IsEmpty]: Start isEmpty. Operand 125 states and 323 transitions. [2025-04-13 17:48:44,104 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:44,104 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:44,104 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:44,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:44,304 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-04-13 17:48:44,304 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:44,304 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1546299711, now seen corresponding path program 11 times [2025-04-13 17:48:44,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:44,305 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286942673] [2025-04-13 17:48:44,305 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:44,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:44,314 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:44,325 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:44,325 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:44,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:48:44,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:44,492 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286942673] [2025-04-13 17:48:44,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286942673] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:44,492 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087266942] [2025-04-13 17:48:44,492 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:44,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:44,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:44,494 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) [2025-04-13 17:48:44,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-04-13 17:48:44,568 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:44,594 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:44,594 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:44,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:44,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 17:48:44,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:44,659 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:44,718 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:48:44,719 INFO L354 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 40 treesize of output 19 [2025-04-13 17:48:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:44,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087266942] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:44,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:44,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2025-04-13 17:48:44,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582788135] [2025-04-13 17:48:44,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:44,728 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:48:44,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:44,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:48:44,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:48:44,728 INFO L87 Difference]: Start difference. First operand 125 states and 323 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2025-04-13 17:48:45,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:45,015 INFO L93 Difference]: Finished difference Result 169 states and 415 transitions. [2025-04-13 17:48:45,015 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 17:48:45,015 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) Word has length 19 [2025-04-13 17:48:45,015 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:45,016 INFO L225 Difference]: With dead ends: 169 [2025-04-13 17:48:45,016 INFO L226 Difference]: Without dead ends: 162 [2025-04-13 17:48:45,016 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:48:45,016 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:45,017 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:48:45,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-04-13 17:48:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 118. [2025-04-13 17:48:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.6495726495726495) internal successors, (310), 117 states have internal predecessors, (310), 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) [2025-04-13 17:48:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 310 transitions. [2025-04-13 17:48:45,065 INFO L79 Accepts]: Start accepts. Automaton has 118 states and 310 transitions. Word has length 19 [2025-04-13 17:48:45,066 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:45,066 INFO L485 AbstractCegarLoop]: Abstraction has 118 states and 310 transitions. [2025-04-13 17:48:45,066 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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) [2025-04-13 17:48:45,066 INFO L278 IsEmpty]: Start isEmpty. Operand 118 states and 310 transitions. [2025-04-13 17:48:45,066 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:45,066 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:45,066 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:45,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:45,267 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:45,267 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:45,268 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:45,268 INFO L85 PathProgramCache]: Analyzing trace with hash 467456915, now seen corresponding path program 12 times [2025-04-13 17:48:45,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:45,268 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466790029] [2025-04-13 17:48:45,268 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:48:45,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:45,275 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:45,289 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:45,290 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:48:45,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:45,546 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466790029] [2025-04-13 17:48:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466790029] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:45,546 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633349960] [2025-04-13 17:48:45,546 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:48:45,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:45,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:45,548 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) [2025-04-13 17:48:45,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-04-13 17:48:45,614 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:45,632 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:45,633 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:48:45,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:45,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 17:48:45,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:45,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:45,892 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:45,892 INFO L354 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 44 treesize of output 28 [2025-04-13 17:48:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:45,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633349960] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:45,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:45,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-04-13 17:48:45,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278352732] [2025-04-13 17:48:45,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:45,910 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:48:45,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:45,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:48:45,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:48:45,911 INFO L87 Difference]: Start difference. First operand 118 states and 310 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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) [2025-04-13 17:48:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:46,349 INFO L93 Difference]: Finished difference Result 172 states and 426 transitions. [2025-04-13 17:48:46,349 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 17:48:46,349 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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) Word has length 19 [2025-04-13 17:48:46,349 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:46,350 INFO L225 Difference]: With dead ends: 172 [2025-04-13 17:48:46,350 INFO L226 Difference]: Without dead ends: 165 [2025-04-13 17:48:46,350 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:48:46,351 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 93 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:46,351 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 0 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:48:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-04-13 17:48:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2025-04-13 17:48:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.6495726495726495) internal successors, (310), 117 states have internal predecessors, (310), 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) [2025-04-13 17:48:46,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 310 transitions. [2025-04-13 17:48:46,401 INFO L79 Accepts]: Start accepts. Automaton has 118 states and 310 transitions. Word has length 19 [2025-04-13 17:48:46,402 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:46,402 INFO L485 AbstractCegarLoop]: Abstraction has 118 states and 310 transitions. [2025-04-13 17:48:46,402 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 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) [2025-04-13 17:48:46,402 INFO L278 IsEmpty]: Start isEmpty. Operand 118 states and 310 transitions. [2025-04-13 17:48:46,402 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:46,402 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:46,402 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:46,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-04-13 17:48:46,602 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:46,603 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:46,603 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:46,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1578452678, now seen corresponding path program 13 times [2025-04-13 17:48:46,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:46,603 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924714320] [2025-04-13 17:48:46,603 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:48:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:46,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 17:48:46,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:46,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:46,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:46,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:46,843 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924714320] [2025-04-13 17:48:46,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924714320] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:46,843 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135776219] [2025-04-13 17:48:46,843 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:48:46,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:46,845 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) [2025-04-13 17:48:46,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-04-13 17:48:46,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 17:48:46,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:46,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:46,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:46,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 17:48:46,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:47,039 INFO L354 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 61 treesize of output 37 [2025-04-13 17:48:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:47,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:47,138 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:48:47,138 INFO L354 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 109 treesize of output 56 [2025-04-13 17:48:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:47,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135776219] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:47,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:47,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2025-04-13 17:48:47,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117312952] [2025-04-13 17:48:47,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:47,158 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:48:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:47,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:48:47,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:48:47,159 INFO L87 Difference]: Start difference. First operand 118 states and 310 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 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) [2025-04-13 17:48:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:47,475 INFO L93 Difference]: Finished difference Result 156 states and 383 transitions. [2025-04-13 17:48:47,475 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 17:48:47,475 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 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) Word has length 19 [2025-04-13 17:48:47,475 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:47,476 INFO L225 Difference]: With dead ends: 156 [2025-04-13 17:48:47,476 INFO L226 Difference]: Without dead ends: 142 [2025-04-13 17:48:47,477 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:48:47,477 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:47,478 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-04-13 17:48:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 118. [2025-04-13 17:48:47,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.6324786324786325) internal successors, (308), 117 states have internal predecessors, (308), 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) [2025-04-13 17:48:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 308 transitions. [2025-04-13 17:48:47,576 INFO L79 Accepts]: Start accepts. Automaton has 118 states and 308 transitions. Word has length 19 [2025-04-13 17:48:47,576 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:47,576 INFO L485 AbstractCegarLoop]: Abstraction has 118 states and 308 transitions. [2025-04-13 17:48:47,577 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 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) [2025-04-13 17:48:47,577 INFO L278 IsEmpty]: Start isEmpty. Operand 118 states and 308 transitions. [2025-04-13 17:48:47,577 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:47,577 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:47,577 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:47,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-04-13 17:48:47,777 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:47,778 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:47,778 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1200982061, now seen corresponding path program 14 times [2025-04-13 17:48:47,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:47,778 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66272288] [2025-04-13 17:48:47,778 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:47,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:47,787 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:48:47,798 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:47,798 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:47,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:48:48,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:48,176 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66272288] [2025-04-13 17:48:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66272288] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:48,176 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368285558] [2025-04-13 17:48:48,176 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:48,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:48,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:48,178 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:48:48,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-04-13 17:48:48,246 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:48:48,273 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:48,273 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:48,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:48,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 17:48:48,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:48,460 INFO L354 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 91 treesize of output 59 [2025-04-13 17:48:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:48,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:48,592 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:48,593 INFO L354 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 44 treesize of output 28 [2025-04-13 17:48:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:48,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368285558] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:48,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:48,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 20 [2025-04-13 17:48:48,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895541423] [2025-04-13 17:48:48,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:48,611 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:48:48,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:48,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:48:48,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:48:48,612 INFO L87 Difference]: Start difference. First operand 118 states and 308 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 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) [2025-04-13 17:48:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:49,405 INFO L93 Difference]: Finished difference Result 177 states and 436 transitions. [2025-04-13 17:48:49,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 17:48:49,405 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 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) Word has length 19 [2025-04-13 17:48:49,405 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:49,406 INFO L225 Difference]: With dead ends: 177 [2025-04-13 17:48:49,406 INFO L226 Difference]: Without dead ends: 170 [2025-04-13 17:48:49,407 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 17:48:49,407 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:49,407 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:48:49,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-04-13 17:48:49,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 116. [2025-04-13 17:48:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.617391304347826) internal successors, (301), 115 states have internal predecessors, (301), 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) [2025-04-13 17:48:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 301 transitions. [2025-04-13 17:48:49,457 INFO L79 Accepts]: Start accepts. Automaton has 116 states and 301 transitions. Word has length 19 [2025-04-13 17:48:49,457 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:49,457 INFO L485 AbstractCegarLoop]: Abstraction has 116 states and 301 transitions. [2025-04-13 17:48:49,457 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 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) [2025-04-13 17:48:49,457 INFO L278 IsEmpty]: Start isEmpty. Operand 116 states and 301 transitions. [2025-04-13 17:48:49,458 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:49,458 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:49,458 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:49,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-04-13 17:48:49,658 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-04-13 17:48:49,658 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:49,659 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1164999338, now seen corresponding path program 15 times [2025-04-13 17:48:49,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:49,659 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829049622] [2025-04-13 17:48:49,659 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:48:49,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:49,665 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:49,673 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 19 statements. [2025-04-13 17:48:49,673 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:48:49,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:49,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:49,864 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829049622] [2025-04-13 17:48:49,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829049622] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:49,865 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270411839] [2025-04-13 17:48:49,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:48:49,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:49,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:49,866 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:48:49,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-04-13 17:48:49,938 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:49,955 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 19 statements. [2025-04-13 17:48:49,955 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:48:49,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:49,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 17:48:49,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:50,085 INFO L354 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 91 treesize of output 59 [2025-04-13 17:48:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:50,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:50,180 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:48:50,180 INFO L354 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 79 treesize of output 42 [2025-04-13 17:48:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:50,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270411839] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:50,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:50,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-04-13 17:48:50,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493843113] [2025-04-13 17:48:50,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:50,195 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 17:48:50,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:50,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 17:48:50,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-04-13 17:48:50,195 INFO L87 Difference]: Start difference. First operand 116 states and 301 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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) [2025-04-13 17:48:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:50,582 INFO L93 Difference]: Finished difference Result 165 states and 402 transitions. [2025-04-13 17:48:50,585 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:48:50,586 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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) Word has length 19 [2025-04-13 17:48:50,586 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:50,587 INFO L225 Difference]: With dead ends: 165 [2025-04-13 17:48:50,587 INFO L226 Difference]: Without dead ends: 154 [2025-04-13 17:48:50,587 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:48:50,587 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:50,587 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:48:50,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-04-13 17:48:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 123. [2025-04-13 17:48:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.622950819672131) internal successors, (320), 122 states have internal predecessors, (320), 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) [2025-04-13 17:48:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 320 transitions. [2025-04-13 17:48:50,648 INFO L79 Accepts]: Start accepts. Automaton has 123 states and 320 transitions. Word has length 19 [2025-04-13 17:48:50,649 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:50,649 INFO L485 AbstractCegarLoop]: Abstraction has 123 states and 320 transitions. [2025-04-13 17:48:50,649 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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) [2025-04-13 17:48:50,649 INFO L278 IsEmpty]: Start isEmpty. Operand 123 states and 320 transitions. [2025-04-13 17:48:50,649 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:50,649 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:50,649 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:50,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-13 17:48:50,849 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-04-13 17:48:50,850 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:50,850 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1112413418, now seen corresponding path program 16 times [2025-04-13 17:48:50,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:50,850 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762699090] [2025-04-13 17:48:50,850 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:50,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:50,856 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:48:50,862 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:50,862 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:50,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:51,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:51,078 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762699090] [2025-04-13 17:48:51,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762699090] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:51,078 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386222563] [2025-04-13 17:48:51,078 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:51,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:51,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:51,079 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:48:51,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-04-13 17:48:51,152 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:48:51,169 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:51,169 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:51,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:51,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 17:48:51,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:51,302 INFO L354 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 91 treesize of output 59 [2025-04-13 17:48:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:51,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:51,479 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:48:51,479 INFO L354 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 79 treesize of output 42 [2025-04-13 17:48:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:51,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386222563] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:51,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:51,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 17:48:51,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874956014] [2025-04-13 17:48:51,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:51,496 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:48:51,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:51,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:48:51,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:48:51,497 INFO L87 Difference]: Start difference. First operand 123 states and 320 transitions. Second operand has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 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) [2025-04-13 17:48:52,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:52,151 INFO L93 Difference]: Finished difference Result 187 states and 443 transitions. [2025-04-13 17:48:52,152 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 17:48:52,152 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 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) Word has length 19 [2025-04-13 17:48:52,152 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:52,153 INFO L225 Difference]: With dead ends: 187 [2025-04-13 17:48:52,153 INFO L226 Difference]: Without dead ends: 179 [2025-04-13 17:48:52,153 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 17:48:52,153 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:52,154 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:48:52,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-04-13 17:48:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 118. [2025-04-13 17:48:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.6153846153846154) internal successors, (306), 117 states have internal predecessors, (306), 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) [2025-04-13 17:48:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 306 transitions. [2025-04-13 17:48:52,213 INFO L79 Accepts]: Start accepts. Automaton has 118 states and 306 transitions. Word has length 19 [2025-04-13 17:48:52,213 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:52,213 INFO L485 AbstractCegarLoop]: Abstraction has 118 states and 306 transitions. [2025-04-13 17:48:52,213 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 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) [2025-04-13 17:48:52,213 INFO L278 IsEmpty]: Start isEmpty. Operand 118 states and 306 transitions. [2025-04-13 17:48:52,213 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:52,213 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:52,213 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:52,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-04-13 17:48:52,414 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-04-13 17:48:52,414 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:52,414 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:52,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1530597119, now seen corresponding path program 17 times [2025-04-13 17:48:52,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:52,414 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812927923] [2025-04-13 17:48:52,414 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:52,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:52,420 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:52,427 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:52,428 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:52,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:48:52,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:52,580 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812927923] [2025-04-13 17:48:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812927923] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:52,580 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787366571] [2025-04-13 17:48:52,580 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:52,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:52,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:52,582 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:48:52,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-04-13 17:48:52,662 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:52,680 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:52,680 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:52,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:52,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-13 17:48:52,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:52,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:52,834 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:52,834 INFO L354 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 51 treesize of output 27 [2025-04-13 17:48:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:52,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787366571] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:52,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:52,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2025-04-13 17:48:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848200135] [2025-04-13 17:48:52,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:52,865 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 17:48:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:52,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 17:48:52,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:48:52,866 INFO L87 Difference]: Start difference. First operand 118 states and 306 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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) [2025-04-13 17:48:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:53,067 INFO L93 Difference]: Finished difference Result 142 states and 357 transitions. [2025-04-13 17:48:53,067 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 17:48:53,068 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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) Word has length 19 [2025-04-13 17:48:53,068 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:53,068 INFO L225 Difference]: With dead ends: 142 [2025-04-13 17:48:53,068 INFO L226 Difference]: Without dead ends: 135 [2025-04-13 17:48:53,069 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:48:53,069 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:53,069 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:53,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-04-13 17:48:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 114. [2025-04-13 17:48:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.584070796460177) internal successors, (292), 113 states have internal predecessors, (292), 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) [2025-04-13 17:48:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 292 transitions. [2025-04-13 17:48:53,126 INFO L79 Accepts]: Start accepts. Automaton has 114 states and 292 transitions. Word has length 19 [2025-04-13 17:48:53,126 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:53,126 INFO L485 AbstractCegarLoop]: Abstraction has 114 states and 292 transitions. [2025-04-13 17:48:53,126 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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) [2025-04-13 17:48:53,126 INFO L278 IsEmpty]: Start isEmpty. Operand 114 states and 292 transitions. [2025-04-13 17:48:53,126 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:53,126 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:53,126 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:53,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:53,327 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:53,327 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:53,327 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:53,327 INFO L85 PathProgramCache]: Analyzing trace with hash -419601356, now seen corresponding path program 18 times [2025-04-13 17:48:53,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:53,327 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577758028] [2025-04-13 17:48:53,327 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:48:53,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:53,334 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:53,343 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:53,343 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:48:53,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:53,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:53,550 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577758028] [2025-04-13 17:48:53,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577758028] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:53,550 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782125] [2025-04-13 17:48:53,550 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:48:53,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:53,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:53,552 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:48:53,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-04-13 17:48:53,623 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:53,641 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:53,641 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:48:53,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:53,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 17:48:53,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:53,737 INFO L354 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 82 treesize of output 50 [2025-04-13 17:48:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:53,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:53,796 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:53,796 INFO L354 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 117 treesize of output 61 [2025-04-13 17:48:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:53,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782125] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:53,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:53,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-04-13 17:48:53,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572945157] [2025-04-13 17:48:53,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:53,837 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:48:53,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:53,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:48:53,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:48:53,838 INFO L87 Difference]: Start difference. First operand 114 states and 292 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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) [2025-04-13 17:48:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:54,113 INFO L93 Difference]: Finished difference Result 132 states and 324 transitions. [2025-04-13 17:48:54,113 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:48:54,114 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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) Word has length 19 [2025-04-13 17:48:54,114 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:54,114 INFO L225 Difference]: With dead ends: 132 [2025-04-13 17:48:54,114 INFO L226 Difference]: Without dead ends: 118 [2025-04-13 17:48:54,115 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:48:54,115 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:54,115 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-04-13 17:48:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2025-04-13 17:48:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.566371681415929) internal successors, (290), 113 states have internal predecessors, (290), 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) [2025-04-13 17:48:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 290 transitions. [2025-04-13 17:48:54,169 INFO L79 Accepts]: Start accepts. Automaton has 114 states and 290 transitions. Word has length 19 [2025-04-13 17:48:54,169 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:54,169 INFO L485 AbstractCegarLoop]: Abstraction has 114 states and 290 transitions. [2025-04-13 17:48:54,169 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 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) [2025-04-13 17:48:54,169 INFO L278 IsEmpty]: Start isEmpty. Operand 114 states and 290 transitions. [2025-04-13 17:48:54,169 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:54,169 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:54,169 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:54,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-04-13 17:48:54,369 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:54,370 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:54,370 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:54,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1095931201, now seen corresponding path program 19 times [2025-04-13 17:48:54,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:54,370 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279140080] [2025-04-13 17:48:54,370 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:48:54,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:54,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 17:48:54,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:54,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:54,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:54,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:54,570 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279140080] [2025-04-13 17:48:54,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279140080] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:54,570 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490193227] [2025-04-13 17:48:54,570 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:48:54,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:54,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:54,572 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:48:54,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-04-13 17:48:54,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 17:48:54,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:54,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:48:54,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:54,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 17:48:54,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:54,726 INFO L354 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 112 treesize of output 72 [2025-04-13 17:48:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:54,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:54,856 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:54,856 INFO L354 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 51 treesize of output 27 [2025-04-13 17:48:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:54,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490193227] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:54,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:54,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 17:48:54,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739529475] [2025-04-13 17:48:54,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:54,888 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:48:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:54,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:48:54,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:48:54,889 INFO L87 Difference]: Start difference. First operand 114 states and 290 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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) [2025-04-13 17:48:55,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:55,465 INFO L93 Difference]: Finished difference Result 188 states and 452 transitions. [2025-04-13 17:48:55,465 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 17:48:55,466 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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) Word has length 19 [2025-04-13 17:48:55,466 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:55,466 INFO L225 Difference]: With dead ends: 188 [2025-04-13 17:48:55,467 INFO L226 Difference]: Without dead ends: 181 [2025-04-13 17:48:55,467 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=1006, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 17:48:55,467 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:55,467 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:48:55,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-04-13 17:48:55,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 116. [2025-04-13 17:48:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.6) internal successors, (299), 115 states have internal predecessors, (299), 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) [2025-04-13 17:48:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 299 transitions. [2025-04-13 17:48:55,523 INFO L79 Accepts]: Start accepts. Automaton has 116 states and 299 transitions. Word has length 19 [2025-04-13 17:48:55,523 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:55,523 INFO L485 AbstractCegarLoop]: Abstraction has 116 states and 299 transitions. [2025-04-13 17:48:55,524 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 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) [2025-04-13 17:48:55,524 INFO L278 IsEmpty]: Start isEmpty. Operand 116 states and 299 transitions. [2025-04-13 17:48:55,524 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:55,524 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:55,524 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:55,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-04-13 17:48:55,724 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-04-13 17:48:55,724 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:55,725 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:55,725 INFO L85 PathProgramCache]: Analyzing trace with hash -633116133, now seen corresponding path program 20 times [2025-04-13 17:48:55,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:55,725 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458090756] [2025-04-13 17:48:55,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:55,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:55,731 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:48:55,738 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:55,738 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:55,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:55,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:55,913 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458090756] [2025-04-13 17:48:55,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458090756] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:55,913 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140836] [2025-04-13 17:48:55,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:48:55,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:55,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:55,915 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:48:55,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-04-13 17:48:55,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:48:56,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:56,014 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:48:56,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:56,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 17:48:56,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:56,189 INFO L354 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 110 treesize of output 70 [2025-04-13 17:48:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:56,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:56,290 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:56,290 INFO L354 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 125 treesize of output 69 [2025-04-13 17:48:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:56,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140836] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:56,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:56,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-04-13 17:48:56,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966472052] [2025-04-13 17:48:56,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:56,354 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:48:56,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:56,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:48:56,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:48:56,355 INFO L87 Difference]: Start difference. First operand 116 states and 299 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2025-04-13 17:48:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:56,715 INFO L93 Difference]: Finished difference Result 158 states and 372 transitions. [2025-04-13 17:48:56,716 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 17:48:56,716 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) Word has length 19 [2025-04-13 17:48:56,716 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:56,717 INFO L225 Difference]: With dead ends: 158 [2025-04-13 17:48:56,717 INFO L226 Difference]: Without dead ends: 151 [2025-04-13 17:48:56,717 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:48:56,717 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:56,717 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:56,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-04-13 17:48:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 108. [2025-04-13 17:48:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.5514018691588785) internal successors, (273), 107 states have internal predecessors, (273), 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) [2025-04-13 17:48:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 273 transitions. [2025-04-13 17:48:56,767 INFO L79 Accepts]: Start accepts. Automaton has 108 states and 273 transitions. Word has length 19 [2025-04-13 17:48:56,767 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:56,767 INFO L485 AbstractCegarLoop]: Abstraction has 108 states and 273 transitions. [2025-04-13 17:48:56,768 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2025-04-13 17:48:56,768 INFO L278 IsEmpty]: Start isEmpty. Operand 108 states and 273 transitions. [2025-04-13 17:48:56,768 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:56,768 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:56,768 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:56,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-04-13 17:48:56,968 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-04-13 17:48:56,968 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:56,969 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash -547228680, now seen corresponding path program 21 times [2025-04-13 17:48:56,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:56,969 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623084715] [2025-04-13 17:48:56,969 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:48:56,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:56,975 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:56,985 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:56,985 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:48:56,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:57,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:48:57,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:57,327 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623084715] [2025-04-13 17:48:57,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623084715] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:57,327 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398682559] [2025-04-13 17:48:57,327 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:48:57,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:57,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:57,329 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:48:57,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-04-13 17:48:57,410 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:57,432 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:57,432 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:48:57,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:57,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 17:48:57,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:57,444 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:48:57,455 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:48:57,468 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:48:57,587 INFO L354 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 112 treesize of output 72 [2025-04-13 17:48:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:48:57,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:57,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398682559] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:57,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:57,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 7] total 22 [2025-04-13 17:48:57,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8811089] [2025-04-13 17:48:57,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:57,778 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:48:57,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:57,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:48:57,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:48:57,779 INFO L87 Difference]: Start difference. First operand 108 states and 273 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:48:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:58,247 INFO L93 Difference]: Finished difference Result 171 states and 404 transitions. [2025-04-13 17:48:58,247 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 17:48:58,247 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) Word has length 19 [2025-04-13 17:48:58,247 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:58,248 INFO L225 Difference]: With dead ends: 171 [2025-04-13 17:48:58,248 INFO L226 Difference]: Without dead ends: 163 [2025-04-13 17:48:58,249 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 17:48:58,249 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:58,249 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:48:58,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-04-13 17:48:58,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 112. [2025-04-13 17:48:58,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.6396396396396398) internal successors, (293), 111 states have internal predecessors, (293), 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) [2025-04-13 17:48:58,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 293 transitions. [2025-04-13 17:48:58,303 INFO L79 Accepts]: Start accepts. Automaton has 112 states and 293 transitions. Word has length 19 [2025-04-13 17:48:58,303 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:58,304 INFO L485 AbstractCegarLoop]: Abstraction has 112 states and 293 transitions. [2025-04-13 17:48:58,304 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:48:58,304 INFO L278 IsEmpty]: Start isEmpty. Operand 112 states and 293 transitions. [2025-04-13 17:48:58,304 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:58,304 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:58,304 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:58,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:58,504 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:58,505 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:58,505 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2142898620, now seen corresponding path program 22 times [2025-04-13 17:48:58,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:58,505 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989808768] [2025-04-13 17:48:58,505 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:58,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:58,512 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:48:58,521 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:58,521 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:58,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:58,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:58,823 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989808768] [2025-04-13 17:48:58,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989808768] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:58,823 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894650355] [2025-04-13 17:48:58,823 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:48:58,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:58,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:58,826 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:48:58,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-04-13 17:48:58,920 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:48:58,939 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:58,939 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:48:58,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:58,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-13 17:48:58,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:59,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:48:59,071 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:48:59,071 INFO L354 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 51 treesize of output 27 [2025-04-13 17:48:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:59,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894650355] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:48:59,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:48:59,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2025-04-13 17:48:59,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006219969] [2025-04-13 17:48:59,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:48:59,101 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:48:59,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:48:59,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:48:59,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:48:59,101 INFO L87 Difference]: Start difference. First operand 112 states and 293 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 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) [2025-04-13 17:48:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:48:59,338 INFO L93 Difference]: Finished difference Result 132 states and 333 transitions. [2025-04-13 17:48:59,338 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 17:48:59,338 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 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) Word has length 19 [2025-04-13 17:48:59,339 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:48:59,339 INFO L225 Difference]: With dead ends: 132 [2025-04-13 17:48:59,339 INFO L226 Difference]: Without dead ends: 124 [2025-04-13 17:48:59,340 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:48:59,340 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:48:59,340 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:48:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-04-13 17:48:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 104. [2025-04-13 17:48:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.533980582524272) internal successors, (261), 103 states have internal predecessors, (261), 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) [2025-04-13 17:48:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 261 transitions. [2025-04-13 17:48:59,390 INFO L79 Accepts]: Start accepts. Automaton has 104 states and 261 transitions. Word has length 19 [2025-04-13 17:48:59,390 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:48:59,390 INFO L485 AbstractCegarLoop]: Abstraction has 104 states and 261 transitions. [2025-04-13 17:48:59,390 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 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) [2025-04-13 17:48:59,390 INFO L278 IsEmpty]: Start isEmpty. Operand 104 states and 261 transitions. [2025-04-13 17:48:59,390 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:48:59,390 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:48:59,390 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:48:59,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-04-13 17:48:59,590 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:59,591 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:48:59,591 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:48:59,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1826678573, now seen corresponding path program 23 times [2025-04-13 17:48:59,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:48:59,591 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10578523] [2025-04-13 17:48:59,591 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:59,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:48:59,597 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:59,604 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:59,604 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:59,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:48:59,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:48:59,778 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10578523] [2025-04-13 17:48:59,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10578523] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:48:59,778 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293271834] [2025-04-13 17:48:59,778 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:48:59,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:48:59,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:48:59,780 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:48:59,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-04-13 17:48:59,873 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:48:59,896 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:48:59,896 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:48:59,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:48:59,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 17:48:59,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:48:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:48:59,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:00,095 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:00,096 INFO L354 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 51 treesize of output 27 [2025-04-13 17:49:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:00,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293271834] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:00,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:00,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2025-04-13 17:49:00,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535988132] [2025-04-13 17:49:00,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:00,121 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:49:00,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:00,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:49:00,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:49:00,121 INFO L87 Difference]: Start difference. First operand 104 states and 261 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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) [2025-04-13 17:49:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:00,408 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2025-04-13 17:49:00,408 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 17:49:00,408 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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) Word has length 19 [2025-04-13 17:49:00,408 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:00,409 INFO L225 Difference]: With dead ends: 148 [2025-04-13 17:49:00,409 INFO L226 Difference]: Without dead ends: 139 [2025-04-13 17:49:00,409 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:49:00,409 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:00,409 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:49:00,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-04-13 17:49:00,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 102. [2025-04-13 17:49:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.514851485148515) internal successors, (254), 101 states have internal predecessors, (254), 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) [2025-04-13 17:49:00,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 254 transitions. [2025-04-13 17:49:00,462 INFO L79 Accepts]: Start accepts. Automaton has 102 states and 254 transitions. Word has length 19 [2025-04-13 17:49:00,462 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:00,462 INFO L485 AbstractCegarLoop]: Abstraction has 102 states and 254 transitions. [2025-04-13 17:49:00,462 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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) [2025-04-13 17:49:00,462 INFO L278 IsEmpty]: Start isEmpty. Operand 102 states and 254 transitions. [2025-04-13 17:49:00,463 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:00,463 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:00,463 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:00,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-04-13 17:49:00,663 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:00,663 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:00,664 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:00,664 INFO L85 PathProgramCache]: Analyzing trace with hash 799849747, now seen corresponding path program 24 times [2025-04-13 17:49:00,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:00,664 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118325499] [2025-04-13 17:49:00,664 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:49:00,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:00,669 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:00,679 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:00,679 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:49:00,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:00,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:00,893 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118325499] [2025-04-13 17:49:00,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118325499] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:00,893 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142554879] [2025-04-13 17:49:00,893 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:49:00,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:00,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:00,895 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:00,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-04-13 17:49:00,982 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:01,002 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:01,002 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:49:01,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:01,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 17:49:01,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:01,064 INFO L354 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 112 treesize of output 72 [2025-04-13 17:49:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:01,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:01,141 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:01,141 INFO L354 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 51 treesize of output 27 [2025-04-13 17:49:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:01,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142554879] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:01,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:01,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-04-13 17:49:01,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481141605] [2025-04-13 17:49:01,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:01,166 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:49:01,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:01,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:49:01,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:49:01,166 INFO L87 Difference]: Start difference. First operand 102 states and 254 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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) [2025-04-13 17:49:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:01,435 INFO L93 Difference]: Finished difference Result 136 states and 333 transitions. [2025-04-13 17:49:01,435 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:49:01,435 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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) Word has length 19 [2025-04-13 17:49:01,435 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:01,436 INFO L225 Difference]: With dead ends: 136 [2025-04-13 17:49:01,436 INFO L226 Difference]: Without dead ends: 127 [2025-04-13 17:49:01,436 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:49:01,436 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:01,437 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:49:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-04-13 17:49:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2025-04-13 17:49:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.514851485148515) internal successors, (254), 101 states have internal predecessors, (254), 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) [2025-04-13 17:49:01,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 254 transitions. [2025-04-13 17:49:01,521 INFO L79 Accepts]: Start accepts. Automaton has 102 states and 254 transitions. Word has length 19 [2025-04-13 17:49:01,521 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:01,521 INFO L485 AbstractCegarLoop]: Abstraction has 102 states and 254 transitions. [2025-04-13 17:49:01,521 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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) [2025-04-13 17:49:01,521 INFO L278 IsEmpty]: Start isEmpty. Operand 102 states and 254 transitions. [2025-04-13 17:49:01,521 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:01,521 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:01,521 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:01,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-04-13 17:49:01,722 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-04-13 17:49:01,722 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:01,722 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:01,722 INFO L85 PathProgramCache]: Analyzing trace with hash 885737200, now seen corresponding path program 25 times [2025-04-13 17:49:01,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:01,723 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543431832] [2025-04-13 17:49:01,723 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:49:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:01,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 17:49:01,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:01,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:49:01,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:01,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:01,919 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543431832] [2025-04-13 17:49:01,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543431832] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:01,919 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729837358] [2025-04-13 17:49:01,919 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:49:01,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:01,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:01,921 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:01,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-04-13 17:49:02,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 17:49:02,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:02,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:49:02,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:02,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 17:49:02,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:02,074 INFO L354 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 112 treesize of output 72 [2025-04-13 17:49:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:02,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:02,149 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:02,150 INFO L354 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 117 treesize of output 61 [2025-04-13 17:49:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:02,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729837358] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:02,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:02,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2025-04-13 17:49:02,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961448325] [2025-04-13 17:49:02,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:02,185 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:49:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:02,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:49:02,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:49:02,186 INFO L87 Difference]: Start difference. First operand 102 states and 254 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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) [2025-04-13 17:49:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:02,482 INFO L93 Difference]: Finished difference Result 132 states and 314 transitions. [2025-04-13 17:49:02,482 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 17:49:02,482 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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) Word has length 19 [2025-04-13 17:49:02,483 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:02,483 INFO L225 Difference]: With dead ends: 132 [2025-04-13 17:49:02,483 INFO L226 Difference]: Without dead ends: 124 [2025-04-13 17:49:02,483 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:49:02,484 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:02,484 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:49:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-04-13 17:49:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2025-04-13 17:49:02,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.4742268041237114) internal successors, (240), 97 states have internal predecessors, (240), 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) [2025-04-13 17:49:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 240 transitions. [2025-04-13 17:49:02,546 INFO L79 Accepts]: Start accepts. Automaton has 98 states and 240 transitions. Word has length 19 [2025-04-13 17:49:02,546 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:02,546 INFO L485 AbstractCegarLoop]: Abstraction has 98 states and 240 transitions. [2025-04-13 17:49:02,546 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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) [2025-04-13 17:49:02,547 INFO L278 IsEmpty]: Start isEmpty. Operand 98 states and 240 transitions. [2025-04-13 17:49:02,547 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:02,547 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:02,547 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:02,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-04-13 17:49:02,747 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-04-13 17:49:02,748 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:02,748 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash -815693877, now seen corresponding path program 26 times [2025-04-13 17:49:02,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:02,748 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004153550] [2025-04-13 17:49:02,748 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:49:02,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:02,754 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:49:02,761 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:02,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:49:02,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:02,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:02,940 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004153550] [2025-04-13 17:49:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004153550] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:02,940 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257880344] [2025-04-13 17:49:02,940 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:49:02,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:02,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:02,942 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:02,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-04-13 17:49:03,032 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:49:03,053 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:03,053 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:49:03,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:03,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 17:49:03,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:03,125 INFO L354 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 112 treesize of output 72 [2025-04-13 17:49:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:03,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:03,205 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:03,205 INFO L354 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 117 treesize of output 61 [2025-04-13 17:49:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:03,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257880344] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:03,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:03,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2025-04-13 17:49:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475901541] [2025-04-13 17:49:03,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:03,245 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 17:49:03,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:03,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 17:49:03,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:49:03,245 INFO L87 Difference]: Start difference. First operand 98 states and 240 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) [2025-04-13 17:49:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:03,559 INFO L93 Difference]: Finished difference Result 129 states and 302 transitions. [2025-04-13 17:49:03,559 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:49:03,559 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) Word has length 19 [2025-04-13 17:49:03,559 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:03,560 INFO L225 Difference]: With dead ends: 129 [2025-04-13 17:49:03,560 INFO L226 Difference]: Without dead ends: 120 [2025-04-13 17:49:03,560 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:49:03,561 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:03,561 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:49:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-04-13 17:49:03,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2025-04-13 17:49:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.5142857142857142) internal successors, (264), 105 states have internal predecessors, (264), 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) [2025-04-13 17:49:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 264 transitions. [2025-04-13 17:49:03,624 INFO L79 Accepts]: Start accepts. Automaton has 106 states and 264 transitions. Word has length 19 [2025-04-13 17:49:03,624 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:03,624 INFO L485 AbstractCegarLoop]: Abstraction has 106 states and 264 transitions. [2025-04-13 17:49:03,624 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) [2025-04-13 17:49:03,624 INFO L278 IsEmpty]: Start isEmpty. Operand 106 states and 264 transitions. [2025-04-13 17:49:03,625 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:03,625 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:03,625 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:03,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-04-13 17:49:03,825 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-04-13 17:49:03,825 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:03,826 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:03,826 INFO L85 PathProgramCache]: Analyzing trace with hash -926516397, now seen corresponding path program 27 times [2025-04-13 17:49:03,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:03,826 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319705575] [2025-04-13 17:49:03,826 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:49:03,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:03,831 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:03,840 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:03,840 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:49:03,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:49:04,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:04,143 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319705575] [2025-04-13 17:49:04,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319705575] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:04,143 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972630666] [2025-04-13 17:49:04,143 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:49:04,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:04,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:04,145 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:04,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-04-13 17:49:04,229 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:04,248 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:04,249 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:49:04,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:04,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 17:49:04,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:04,326 INFO L354 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 112 treesize of output 72 [2025-04-13 17:49:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:04,345 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:04,409 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:04,409 INFO L354 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 117 treesize of output 61 [2025-04-13 17:49:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:04,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972630666] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:04,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:04,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 21 [2025-04-13 17:49:04,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26760507] [2025-04-13 17:49:04,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:04,445 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:49:04,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:04,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:49:04,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:49:04,445 INFO L87 Difference]: Start difference. First operand 106 states and 264 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 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) [2025-04-13 17:49:04,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:04,820 INFO L93 Difference]: Finished difference Result 125 states and 298 transitions. [2025-04-13 17:49:04,821 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 17:49:04,821 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 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) Word has length 19 [2025-04-13 17:49:04,821 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:04,821 INFO L225 Difference]: With dead ends: 125 [2025-04-13 17:49:04,821 INFO L226 Difference]: Without dead ends: 118 [2025-04-13 17:49:04,822 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:49:04,822 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:04,822 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:49:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-04-13 17:49:04,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2025-04-13 17:49:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.474747474747475) internal successors, (245), 99 states have internal predecessors, (245), 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) [2025-04-13 17:49:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 245 transitions. [2025-04-13 17:49:04,872 INFO L79 Accepts]: Start accepts. Automaton has 100 states and 245 transitions. Word has length 19 [2025-04-13 17:49:04,872 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:04,872 INFO L485 AbstractCegarLoop]: Abstraction has 100 states and 245 transitions. [2025-04-13 17:49:04,872 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 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) [2025-04-13 17:49:04,872 INFO L278 IsEmpty]: Start isEmpty. Operand 100 states and 245 transitions. [2025-04-13 17:49:04,872 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:04,872 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:04,872 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:04,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-04-13 17:49:05,073 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-04-13 17:49:05,073 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:05,073 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash -893214864, now seen corresponding path program 28 times [2025-04-13 17:49:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:05,073 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513879313] [2025-04-13 17:49:05,073 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:49:05,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:05,079 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:49:05,086 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:05,086 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:49:05,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:05,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:05,293 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513879313] [2025-04-13 17:49:05,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513879313] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:05,293 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368259132] [2025-04-13 17:49:05,293 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:49:05,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:05,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:05,295 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:05,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-04-13 17:49:05,388 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:49:05,406 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:05,407 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:49:05,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:05,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 17:49:05,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:05,522 INFO L354 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 91 treesize of output 59 [2025-04-13 17:49:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:05,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:05,671 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:05,672 INFO L354 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 54 treesize of output 30 [2025-04-13 17:49:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:05,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368259132] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:05,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:05,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 17:49:05,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714122124] [2025-04-13 17:49:05,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:05,716 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:49:05,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:05,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:49:05,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:49:05,717 INFO L87 Difference]: Start difference. First operand 100 states and 245 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 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) [2025-04-13 17:49:06,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:06,106 INFO L93 Difference]: Finished difference Result 148 states and 347 transitions. [2025-04-13 17:49:06,106 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 17:49:06,106 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 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) Word has length 19 [2025-04-13 17:49:06,106 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:06,107 INFO L225 Difference]: With dead ends: 148 [2025-04-13 17:49:06,107 INFO L226 Difference]: Without dead ends: 137 [2025-04-13 17:49:06,107 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:49:06,107 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:06,108 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:49:06,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-04-13 17:49:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2025-04-13 17:49:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.5272727272727273) internal successors, (278), 110 states have internal predecessors, (278), 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) [2025-04-13 17:49:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 278 transitions. [2025-04-13 17:49:06,167 INFO L79 Accepts]: Start accepts. Automaton has 111 states and 278 transitions. Word has length 19 [2025-04-13 17:49:06,167 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:06,167 INFO L485 AbstractCegarLoop]: Abstraction has 111 states and 278 transitions. [2025-04-13 17:49:06,167 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 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) [2025-04-13 17:49:06,167 INFO L278 IsEmpty]: Start isEmpty. Operand 111 states and 278 transitions. [2025-04-13 17:49:06,168 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:06,168 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:06,168 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:06,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-04-13 17:49:06,368 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:06,368 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:06,368 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash -840628944, now seen corresponding path program 29 times [2025-04-13 17:49:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:06,369 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953795415] [2025-04-13 17:49:06,369 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:49:06,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:06,374 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:06,381 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:06,381 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:49:06,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:06,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:06,555 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953795415] [2025-04-13 17:49:06,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953795415] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:06,555 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401960773] [2025-04-13 17:49:06,555 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:49:06,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:06,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:06,557 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:06,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-04-13 17:49:06,646 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:06,673 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:06,673 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:49:06,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:06,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-04-13 17:49:06,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:06,684 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:49:06,692 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 17:49:06,700 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 17:49:06,757 INFO L354 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 112 treesize of output 72 [2025-04-13 17:49:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:49:06,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:06,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401960773] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:06,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:06,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 21 [2025-04-13 17:49:06,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083224847] [2025-04-13 17:49:06,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:06,881 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:49:06,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:06,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:49:06,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:49:06,881 INFO L87 Difference]: Start difference. First operand 111 states and 278 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 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) [2025-04-13 17:49:07,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:07,351 INFO L93 Difference]: Finished difference Result 139 states and 324 transitions. [2025-04-13 17:49:07,351 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 17:49:07,351 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 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) Word has length 19 [2025-04-13 17:49:07,351 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:07,352 INFO L225 Difference]: With dead ends: 139 [2025-04-13 17:49:07,352 INFO L226 Difference]: Without dead ends: 131 [2025-04-13 17:49:07,352 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:49:07,352 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:07,353 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:49:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-04-13 17:49:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 109. [2025-04-13 17:49:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.5277777777777777) internal successors, (273), 108 states have internal predecessors, (273), 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) [2025-04-13 17:49:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 273 transitions. [2025-04-13 17:49:07,426 INFO L79 Accepts]: Start accepts. Automaton has 109 states and 273 transitions. Word has length 19 [2025-04-13 17:49:07,426 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:07,426 INFO L485 AbstractCegarLoop]: Abstraction has 109 states and 273 transitions. [2025-04-13 17:49:07,426 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 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) [2025-04-13 17:49:07,426 INFO L278 IsEmpty]: Start isEmpty. Operand 109 states and 273 transitions. [2025-04-13 17:49:07,426 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:07,426 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:07,427 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:07,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-04-13 17:49:07,627 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-04-13 17:49:07,627 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:07,627 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1735994646, now seen corresponding path program 30 times [2025-04-13 17:49:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:07,627 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375971329] [2025-04-13 17:49:07,627 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:49:07,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:07,633 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:07,641 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:07,642 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:49:07,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:07,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:07,872 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375971329] [2025-04-13 17:49:07,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375971329] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:07,872 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103767798] [2025-04-13 17:49:07,872 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:49:07,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:07,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:07,874 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:07,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-04-13 17:49:07,967 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:07,986 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:07,986 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:49:07,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:07,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 17:49:07,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:08,094 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:08,185 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:08,185 INFO L354 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 54 treesize of output 30 [2025-04-13 17:49:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:08,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103767798] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:08,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:08,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-04-13 17:49:08,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587379781] [2025-04-13 17:49:08,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:08,224 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 17:49:08,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:08,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 17:49:08,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-04-13 17:49:08,225 INFO L87 Difference]: Start difference. First operand 109 states and 273 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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) [2025-04-13 17:49:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:08,552 INFO L93 Difference]: Finished difference Result 140 states and 323 transitions. [2025-04-13 17:49:08,553 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 17:49:08,553 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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) Word has length 19 [2025-04-13 17:49:08,553 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:08,554 INFO L225 Difference]: With dead ends: 140 [2025-04-13 17:49:08,554 INFO L226 Difference]: Without dead ends: 132 [2025-04-13 17:49:08,554 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:49:08,555 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:08,555 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:49:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-04-13 17:49:08,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2025-04-13 17:49:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.4742268041237114) internal successors, (240), 97 states have internal predecessors, (240), 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) [2025-04-13 17:49:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 240 transitions. [2025-04-13 17:49:08,606 INFO L79 Accepts]: Start accepts. Automaton has 98 states and 240 transitions. Word has length 19 [2025-04-13 17:49:08,606 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:08,606 INFO L485 AbstractCegarLoop]: Abstraction has 98 states and 240 transitions. [2025-04-13 17:49:08,606 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 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) [2025-04-13 17:49:08,606 INFO L278 IsEmpty]: Start isEmpty. Operand 98 states and 240 transitions. [2025-04-13 17:49:08,606 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:08,606 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:08,606 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:08,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-04-13 17:49:08,806 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:08,807 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:08,807 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2131851181, now seen corresponding path program 31 times [2025-04-13 17:49:08,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:08,807 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139046954] [2025-04-13 17:49:08,807 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:49:08,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:08,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 17:49:08,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:08,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:49:08,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:09,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:09,050 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139046954] [2025-04-13 17:49:09,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139046954] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:09,050 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236996423] [2025-04-13 17:49:09,050 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:49:09,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:09,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:09,052 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:09,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-04-13 17:49:09,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 17:49:09,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:09,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:49:09,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:09,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 17:49:09,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:09,243 INFO L354 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 91 treesize of output 59 [2025-04-13 17:49:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:09,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:09,332 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:49:09,333 INFO L354 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 79 treesize of output 42 [2025-04-13 17:49:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:09,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236996423] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:09,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:09,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2025-04-13 17:49:09,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686974484] [2025-04-13 17:49:09,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:09,347 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:49:09,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:09,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:49:09,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:49:09,348 INFO L87 Difference]: Start difference. First operand 98 states and 240 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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) [2025-04-13 17:49:09,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:09,853 INFO L93 Difference]: Finished difference Result 133 states and 305 transitions. [2025-04-13 17:49:09,853 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 17:49:09,854 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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) Word has length 19 [2025-04-13 17:49:09,854 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:09,855 INFO L225 Difference]: With dead ends: 133 [2025-04-13 17:49:09,855 INFO L226 Difference]: Without dead ends: 124 [2025-04-13 17:49:09,855 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:49:09,855 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:09,855 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:49:09,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-04-13 17:49:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2025-04-13 17:49:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.4752475247524752) internal successors, (250), 101 states have internal predecessors, (250), 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) [2025-04-13 17:49:09,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 250 transitions. [2025-04-13 17:49:09,922 INFO L79 Accepts]: Start accepts. Automaton has 102 states and 250 transitions. Word has length 19 [2025-04-13 17:49:09,922 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:09,923 INFO L485 AbstractCegarLoop]: Abstraction has 102 states and 250 transitions. [2025-04-13 17:49:09,923 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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) [2025-04-13 17:49:09,923 INFO L278 IsEmpty]: Start isEmpty. Operand 102 states and 250 transitions. [2025-04-13 17:49:09,923 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:09,923 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:09,923 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:09,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2025-04-13 17:49:10,123 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:10,123 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:10,124 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2052293595, now seen corresponding path program 32 times [2025-04-13 17:49:10,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:10,124 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187512728] [2025-04-13 17:49:10,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:49:10,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:10,133 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:49:10,141 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:10,141 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:49:10,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:49:10,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:10,430 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187512728] [2025-04-13 17:49:10,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187512728] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:10,430 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584525183] [2025-04-13 17:49:10,430 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:49:10,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:10,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:10,432 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:10,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-04-13 17:49:10,525 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:49:10,543 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:10,543 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:49:10,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:10,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 17:49:10,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:10,640 INFO L354 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 112 treesize of output 72 [2025-04-13 17:49:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:10,659 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:10,736 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:49:10,736 INFO L354 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 109 treesize of output 56 [2025-04-13 17:49:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:10,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584525183] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:10,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:10,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 20 [2025-04-13 17:49:10,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536741546] [2025-04-13 17:49:10,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:10,753 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:49:10,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:10,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:49:10,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:49:10,753 INFO L87 Difference]: Start difference. First operand 102 states and 250 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 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) [2025-04-13 17:49:11,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:11,019 INFO L93 Difference]: Finished difference Result 119 states and 277 transitions. [2025-04-13 17:49:11,019 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:49:11,019 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 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) Word has length 19 [2025-04-13 17:49:11,019 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:11,020 INFO L225 Difference]: With dead ends: 119 [2025-04-13 17:49:11,020 INFO L226 Difference]: Without dead ends: 112 [2025-04-13 17:49:11,020 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:49:11,020 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:11,020 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:49:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-04-13 17:49:11,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2025-04-13 17:49:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.431578947368421) internal successors, (231), 95 states have internal predecessors, (231), 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) [2025-04-13 17:49:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 231 transitions. [2025-04-13 17:49:11,072 INFO L79 Accepts]: Start accepts. Automaton has 96 states and 231 transitions. Word has length 19 [2025-04-13 17:49:11,072 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:11,072 INFO L485 AbstractCegarLoop]: Abstraction has 96 states and 231 transitions. [2025-04-13 17:49:11,072 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 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) [2025-04-13 17:49:11,072 INFO L278 IsEmpty]: Start isEmpty. Operand 96 states and 231 transitions. [2025-04-13 17:49:11,073 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:11,073 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:11,073 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:11,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-04-13 17:49:11,273 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-04-13 17:49:11,273 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:11,273 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:11,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2085595128, now seen corresponding path program 33 times [2025-04-13 17:49:11,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:11,274 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347913756] [2025-04-13 17:49:11,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:49:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:11,280 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:11,286 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 19 statements. [2025-04-13 17:49:11,287 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:49:11,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:11,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:11,494 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347913756] [2025-04-13 17:49:11,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347913756] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:11,494 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9897547] [2025-04-13 17:49:11,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:49:11,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:11,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:11,496 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:11,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-04-13 17:49:11,592 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:11,613 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 19 statements. [2025-04-13 17:49:11,613 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:49:11,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:11,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 17:49:11,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:11,715 INFO L354 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 112 treesize of output 72 [2025-04-13 17:49:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:11,741 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:11,826 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:11,827 INFO L354 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 44 treesize of output 28 [2025-04-13 17:49:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:11,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9897547] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:11,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:11,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-04-13 17:49:11,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300167230] [2025-04-13 17:49:11,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:11,847 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:49:11,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:11,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:49:11,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:49:11,848 INFO L87 Difference]: Start difference. First operand 96 states and 231 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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) [2025-04-13 17:49:12,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:12,299 INFO L93 Difference]: Finished difference Result 141 states and 322 transitions. [2025-04-13 17:49:12,300 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 17:49:12,300 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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) Word has length 19 [2025-04-13 17:49:12,300 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:12,301 INFO L225 Difference]: With dead ends: 141 [2025-04-13 17:49:12,301 INFO L226 Difference]: Without dead ends: 130 [2025-04-13 17:49:12,301 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:49:12,301 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:12,301 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:49:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-04-13 17:49:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2025-04-13 17:49:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 2.4711538461538463) internal successors, (257), 104 states have internal predecessors, (257), 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) [2025-04-13 17:49:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2025-04-13 17:49:12,360 INFO L79 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 19 [2025-04-13 17:49:12,361 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:12,361 INFO L485 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2025-04-13 17:49:12,361 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 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) [2025-04-13 17:49:12,361 INFO L278 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2025-04-13 17:49:12,361 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:12,361 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:12,361 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:12,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-04-13 17:49:12,561 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-04-13 17:49:12,561 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:12,562 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:12,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2138181048, now seen corresponding path program 34 times [2025-04-13 17:49:12,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:12,562 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682928575] [2025-04-13 17:49:12,562 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:49:12,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:12,567 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:49:12,573 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:12,573 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:49:12,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:12,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:12,778 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682928575] [2025-04-13 17:49:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682928575] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:12,778 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079513275] [2025-04-13 17:49:12,778 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:49:12,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:12,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:12,780 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:12,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-04-13 17:49:12,873 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 17:49:12,891 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:12,891 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:49:12,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:12,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-13 17:49:12,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:12,984 INFO L354 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 112 treesize of output 72 [2025-04-13 17:49:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:13,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:13,158 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:13,158 INFO L354 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 44 treesize of output 28 [2025-04-13 17:49:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:13,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079513275] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:13,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:13,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 17:49:13,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91367119] [2025-04-13 17:49:13,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:13,175 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:49:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:13,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:49:13,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:49:13,175 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 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) [2025-04-13 17:49:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:13,994 INFO L93 Difference]: Finished difference Result 168 states and 381 transitions. [2025-04-13 17:49:13,995 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 17:49:13,995 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 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) Word has length 19 [2025-04-13 17:49:13,995 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:13,996 INFO L225 Difference]: With dead ends: 168 [2025-04-13 17:49:13,996 INFO L226 Difference]: Without dead ends: 160 [2025-04-13 17:49:13,996 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 17:49:13,997 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 131 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:13,997 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 0 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:49:13,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2025-04-13 17:49:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 103. [2025-04-13 17:49:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 2.4705882352941178) internal successors, (252), 102 states have internal predecessors, (252), 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) [2025-04-13 17:49:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 252 transitions. [2025-04-13 17:49:14,060 INFO L79 Accepts]: Start accepts. Automaton has 103 states and 252 transitions. Word has length 19 [2025-04-13 17:49:14,060 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:14,060 INFO L485 AbstractCegarLoop]: Abstraction has 103 states and 252 transitions. [2025-04-13 17:49:14,060 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 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) [2025-04-13 17:49:14,060 INFO L278 IsEmpty]: Start isEmpty. Operand 103 states and 252 transitions. [2025-04-13 17:49:14,060 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:14,061 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:14,061 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:14,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-04-13 17:49:14,261 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-04-13 17:49:14,261 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:14,261 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:14,261 INFO L85 PathProgramCache]: Analyzing trace with hash 419837342, now seen corresponding path program 35 times [2025-04-13 17:49:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:14,262 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173143607] [2025-04-13 17:49:14,262 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:49:14,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:14,268 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:14,275 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:14,275 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:49:14,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:49:14,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:14,455 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173143607] [2025-04-13 17:49:14,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173143607] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:14,455 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802856124] [2025-04-13 17:49:14,455 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:49:14,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:14,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:14,457 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:14,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-04-13 17:49:14,555 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:14,573 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:14,574 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:49:14,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:14,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-13 17:49:14,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:14,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:14,829 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:49:14,830 INFO L354 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 40 treesize of output 19 [2025-04-13 17:49:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:14,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802856124] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:14,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:14,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2025-04-13 17:49:14,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437917563] [2025-04-13 17:49:14,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:14,842 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:49:14,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:14,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:49:14,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:49:14,843 INFO L87 Difference]: Start difference. First operand 103 states and 252 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 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) [2025-04-13 17:49:15,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:15,296 INFO L93 Difference]: Finished difference Result 154 states and 355 transitions. [2025-04-13 17:49:15,296 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 17:49:15,297 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 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) Word has length 19 [2025-04-13 17:49:15,297 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:15,298 INFO L225 Difference]: With dead ends: 154 [2025-04-13 17:49:15,298 INFO L226 Difference]: Without dead ends: 146 [2025-04-13 17:49:15,298 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:49:15,298 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:15,298 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:49:15,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-04-13 17:49:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 101. [2025-04-13 17:49:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.47) internal successors, (247), 100 states have internal predecessors, (247), 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) [2025-04-13 17:49:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2025-04-13 17:49:15,370 INFO L79 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 19 [2025-04-13 17:49:15,370 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:15,370 INFO L485 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2025-04-13 17:49:15,370 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 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) [2025-04-13 17:49:15,370 INFO L278 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2025-04-13 17:49:15,371 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 17:49:15,371 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:15,371 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:15,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2025-04-13 17:49:15,571 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-04-13 17:49:15,572 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:15,572 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:15,572 INFO L85 PathProgramCache]: Analyzing trace with hash -453903338, now seen corresponding path program 36 times [2025-04-13 17:49:15,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:15,573 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517569058] [2025-04-13 17:49:15,573 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:49:15,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:15,579 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:15,588 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:15,588 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:49:15,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:15,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:15,839 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517569058] [2025-04-13 17:49:15,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517569058] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:15,839 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049857407] [2025-04-13 17:49:15,839 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:49:15,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:15,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:15,841 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:15,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-04-13 17:49:15,951 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 17:49:15,972 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 17:49:15,972 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:49:15,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:15,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 17:49:15,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:16,090 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:16,185 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:16,186 INFO L354 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 44 treesize of output 28 [2025-04-13 17:49:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:16,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049857407] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:16,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:16,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-04-13 17:49:16,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185831662] [2025-04-13 17:49:16,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:16,205 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 17:49:16,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:16,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 17:49:16,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2025-04-13 17:49:16,206 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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) [2025-04-13 17:49:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:16,558 INFO L93 Difference]: Finished difference Result 130 states and 304 transitions. [2025-04-13 17:49:16,558 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 17:49:16,558 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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) Word has length 19 [2025-04-13 17:49:16,558 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:16,559 INFO L225 Difference]: With dead ends: 130 [2025-04-13 17:49:16,559 INFO L226 Difference]: Without dead ends: 122 [2025-04-13 17:49:16,560 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:49:16,560 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:16,560 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:49:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-04-13 17:49:16,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 88. [2025-04-13 17:49:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.4022988505747125) internal successors, (209), 87 states have internal predecessors, (209), 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) [2025-04-13 17:49:16,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 209 transitions. [2025-04-13 17:49:16,625 INFO L79 Accepts]: Start accepts. Automaton has 88 states and 209 transitions. Word has length 19 [2025-04-13 17:49:16,625 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:16,625 INFO L485 AbstractCegarLoop]: Abstraction has 88 states and 209 transitions. [2025-04-13 17:49:16,625 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 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) [2025-04-13 17:49:16,625 INFO L278 IsEmpty]: Start isEmpty. Operand 88 states and 209 transitions. [2025-04-13 17:49:16,625 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:49:16,625 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:16,626 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:16,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2025-04-13 17:49:16,826 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:16,826 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:16,826 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:16,826 INFO L85 PathProgramCache]: Analyzing trace with hash 623225188, now seen corresponding path program 37 times [2025-04-13 17:49:16,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:16,826 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137266417] [2025-04-13 17:49:16,826 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:49:16,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:16,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:49:16,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:16,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:49:16,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:49:17,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:17,447 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137266417] [2025-04-13 17:49:17,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137266417] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:17,447 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906616966] [2025-04-13 17:49:17,447 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:49:17,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:17,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:17,449 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:17,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-04-13 17:49:17,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:49:17,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:17,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:49:17,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:17,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:49:17,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:17,795 INFO L354 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 162 treesize of output 90 [2025-04-13 17:49:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:17,841 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:18,456 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:18,456 INFO L354 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 148 treesize of output 94 [2025-04-13 17:49:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:18,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906616966] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:18,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:18,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2025-04-13 17:49:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806561129] [2025-04-13 17:49:18,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:18,556 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 17:49:18,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:18,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 17:49:18,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:49:18,557 INFO L87 Difference]: Start difference. First operand 88 states and 209 transitions. Second operand has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 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) [2025-04-13 17:49:20,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:20,749 INFO L93 Difference]: Finished difference Result 182 states and 417 transitions. [2025-04-13 17:49:20,749 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 17:49:20,749 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 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) Word has length 20 [2025-04-13 17:49:20,749 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:20,750 INFO L225 Difference]: With dead ends: 182 [2025-04-13 17:49:20,750 INFO L226 Difference]: Without dead ends: 173 [2025-04-13 17:49:20,751 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=392, Invalid=2470, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 17:49:20,751 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:20,751 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:49:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-04-13 17:49:20,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 119. [2025-04-13 17:49:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 2.483050847457627) internal successors, (293), 118 states have internal predecessors, (293), 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) [2025-04-13 17:49:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 293 transitions. [2025-04-13 17:49:20,847 INFO L79 Accepts]: Start accepts. Automaton has 119 states and 293 transitions. Word has length 20 [2025-04-13 17:49:20,847 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:20,847 INFO L485 AbstractCegarLoop]: Abstraction has 119 states and 293 transitions. [2025-04-13 17:49:20,847 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 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) [2025-04-13 17:49:20,847 INFO L278 IsEmpty]: Start isEmpty. Operand 119 states and 293 transitions. [2025-04-13 17:49:20,847 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:49:20,847 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:20,847 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:20,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2025-04-13 17:49:21,048 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-04-13 17:49:21,048 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:21,048 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1606228406, now seen corresponding path program 38 times [2025-04-13 17:49:21,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:21,048 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108342909] [2025-04-13 17:49:21,048 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:49:21,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:21,054 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:49:21,063 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:21,063 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:49:21,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:21,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:21,439 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108342909] [2025-04-13 17:49:21,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108342909] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:21,439 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578287267] [2025-04-13 17:49:21,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:49:21,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:21,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:21,441 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:21,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-04-13 17:49:21,548 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:49:21,567 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:21,568 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:49:21,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:21,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-04-13 17:49:21,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:21,590 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:49:21,601 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:49:21,820 INFO L354 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 77 treesize of output 49 [2025-04-13 17:49:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:49:21,872 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:22,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578287267] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:22,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:22,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 9] total 30 [2025-04-13 17:49:22,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305157440] [2025-04-13 17:49:22,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:22,944 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 17:49:22,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:22,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 17:49:22,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:49:22,945 INFO L87 Difference]: Start difference. First operand 119 states and 293 transitions. Second operand has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 31 states have internal predecessors, (52), 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) [2025-04-13 17:49:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:25,460 INFO L93 Difference]: Finished difference Result 260 states and 646 transitions. [2025-04-13 17:49:25,460 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 17:49:25,460 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 31 states have internal predecessors, (52), 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) Word has length 20 [2025-04-13 17:49:25,460 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:25,461 INFO L225 Difference]: With dead ends: 260 [2025-04-13 17:49:25,461 INFO L226 Difference]: Without dead ends: 251 [2025-04-13 17:49:25,462 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=342, Invalid=3198, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 17:49:25,462 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 119 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:25,462 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 0 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 17:49:25,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-04-13 17:49:25,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 133. [2025-04-13 17:49:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.5757575757575757) internal successors, (340), 132 states have internal predecessors, (340), 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) [2025-04-13 17:49:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 340 transitions. [2025-04-13 17:49:25,561 INFO L79 Accepts]: Start accepts. Automaton has 133 states and 340 transitions. Word has length 20 [2025-04-13 17:49:25,561 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:25,561 INFO L485 AbstractCegarLoop]: Abstraction has 133 states and 340 transitions. [2025-04-13 17:49:25,561 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 31 states have internal predecessors, (52), 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) [2025-04-13 17:49:25,561 INFO L278 IsEmpty]: Start isEmpty. Operand 133 states and 340 transitions. [2025-04-13 17:49:25,562 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:49:25,562 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:25,562 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:25,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2025-04-13 17:49:25,762 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:25,762 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:25,762 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:25,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1137223610, now seen corresponding path program 39 times [2025-04-13 17:49:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:25,763 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058459816] [2025-04-13 17:49:25,763 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:49:25,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:25,769 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:49:25,776 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 20 statements. [2025-04-13 17:49:25,776 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:49:25,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:26,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:26,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:26,122 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058459816] [2025-04-13 17:49:26,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058459816] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:26,123 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591095205] [2025-04-13 17:49:26,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:49:26,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:26,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:26,124 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:26,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-04-13 17:49:26,227 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:49:26,245 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 20 statements. [2025-04-13 17:49:26,246 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:49:26,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:26,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:49:26,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:26,502 INFO L354 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 77 treesize of output 49 [2025-04-13 17:49:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:26,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:27,135 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:27,135 INFO L354 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 334 treesize of output 194 [2025-04-13 17:49:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:27,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591095205] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:27,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:27,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 26 [2025-04-13 17:49:27,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141740190] [2025-04-13 17:49:27,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:27,391 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 17:49:27,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:27,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 17:49:27,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:49:27,391 INFO L87 Difference]: Start difference. First operand 133 states and 340 transitions. Second operand has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 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) [2025-04-13 17:49:29,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:29,447 INFO L93 Difference]: Finished difference Result 302 states and 679 transitions. [2025-04-13 17:49:29,448 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 17:49:29,448 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 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) Word has length 20 [2025-04-13 17:49:29,448 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:29,449 INFO L225 Difference]: With dead ends: 302 [2025-04-13 17:49:29,449 INFO L226 Difference]: Without dead ends: 289 [2025-04-13 17:49:29,449 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=279, Invalid=2073, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 17:49:29,450 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:29,450 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 17:49:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2025-04-13 17:49:29,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 147. [2025-04-13 17:49:29,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.7054794520547945) internal successors, (395), 146 states have internal predecessors, (395), 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) [2025-04-13 17:49:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 395 transitions. [2025-04-13 17:49:29,574 INFO L79 Accepts]: Start accepts. Automaton has 147 states and 395 transitions. Word has length 20 [2025-04-13 17:49:29,574 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:29,574 INFO L485 AbstractCegarLoop]: Abstraction has 147 states and 395 transitions. [2025-04-13 17:49:29,575 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 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) [2025-04-13 17:49:29,575 INFO L278 IsEmpty]: Start isEmpty. Operand 147 states and 395 transitions. [2025-04-13 17:49:29,575 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:49:29,575 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:29,575 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:29,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2025-04-13 17:49:29,775 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2025-04-13 17:49:29,776 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:29,776 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1084637690, now seen corresponding path program 40 times [2025-04-13 17:49:29,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:29,776 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599357266] [2025-04-13 17:49:29,776 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:49:29,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:29,784 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:49:29,790 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:29,790 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:49:29,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:49:30,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:30,220 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599357266] [2025-04-13 17:49:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599357266] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:30,220 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244580219] [2025-04-13 17:49:30,220 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:49:30,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:30,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:30,222 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:30,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-04-13 17:49:30,328 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:49:30,352 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:30,352 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:49:30,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:30,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 17:49:30,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:30,530 INFO L354 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 214 treesize of output 118 [2025-04-13 17:49:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:49:30,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:31,428 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:31,428 INFO L354 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 302 treesize of output 196 [2025-04-13 17:49:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244580219] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:31,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:31,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 27 [2025-04-13 17:49:31,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125295797] [2025-04-13 17:49:31,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:31,687 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:49:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:31,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:49:31,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:49:31,687 INFO L87 Difference]: Start difference. First operand 147 states and 395 transitions. Second operand has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 28 states have internal predecessors, (50), 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) [2025-04-13 17:49:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:37,346 INFO L93 Difference]: Finished difference Result 369 states and 819 transitions. [2025-04-13 17:49:37,346 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-04-13 17:49:37,346 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 28 states have internal predecessors, (50), 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) Word has length 20 [2025-04-13 17:49:37,346 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:37,347 INFO L225 Difference]: With dead ends: 369 [2025-04-13 17:49:37,347 INFO L226 Difference]: Without dead ends: 297 [2025-04-13 17:49:37,348 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=608, Invalid=4794, Unknown=0, NotChecked=0, Total=5402 [2025-04-13 17:49:37,348 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:37,348 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 0 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 17:49:37,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2025-04-13 17:49:37,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 155. [2025-04-13 17:49:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 2.720779220779221) internal successors, (419), 154 states have internal predecessors, (419), 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) [2025-04-13 17:49:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 419 transitions. [2025-04-13 17:49:37,477 INFO L79 Accepts]: Start accepts. Automaton has 155 states and 419 transitions. Word has length 20 [2025-04-13 17:49:37,477 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:37,477 INFO L485 AbstractCegarLoop]: Abstraction has 155 states and 419 transitions. [2025-04-13 17:49:37,477 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 28 states have internal predecessors, (50), 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) [2025-04-13 17:49:37,477 INFO L278 IsEmpty]: Start isEmpty. Operand 155 states and 419 transitions. [2025-04-13 17:49:37,477 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:49:37,477 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:37,477 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:37,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2025-04-13 17:49:37,677 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:37,678 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:37,678 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:37,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1428696352, now seen corresponding path program 41 times [2025-04-13 17:49:37,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:37,678 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799105190] [2025-04-13 17:49:37,678 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:49:37,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:37,685 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:49:37,692 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:37,692 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:49:37,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:49:38,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:38,195 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799105190] [2025-04-13 17:49:38,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799105190] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:38,195 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476065010] [2025-04-13 17:49:38,195 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:49:38,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:38,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:38,197 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:38,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-04-13 17:49:38,314 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:49:38,336 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:38,336 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:49:38,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:38,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-13 17:49:38,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:38,525 INFO L354 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 169 treesize of output 91 [2025-04-13 17:49:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:38,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:39,199 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:39,200 INFO L354 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 282 treesize of output 178 [2025-04-13 17:49:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:39,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476065010] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:39,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:39,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2025-04-13 17:49:39,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614678029] [2025-04-13 17:49:39,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:39,386 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:49:39,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:39,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:49:39,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:49:39,387 INFO L87 Difference]: Start difference. First operand 155 states and 419 transitions. Second operand has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 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) [2025-04-13 17:49:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:43,056 INFO L93 Difference]: Finished difference Result 385 states and 936 transitions. [2025-04-13 17:49:43,056 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-04-13 17:49:43,056 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 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) Word has length 20 [2025-04-13 17:49:43,056 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:43,058 INFO L225 Difference]: With dead ends: 385 [2025-04-13 17:49:43,058 INFO L226 Difference]: Without dead ends: 346 [2025-04-13 17:49:43,058 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=538, Invalid=4154, Unknown=0, NotChecked=0, Total=4692 [2025-04-13 17:49:43,058 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:43,058 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 0 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 17:49:43,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2025-04-13 17:49:43,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 185. [2025-04-13 17:49:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.858695652173913) internal successors, (526), 184 states have internal predecessors, (526), 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) [2025-04-13 17:49:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 526 transitions. [2025-04-13 17:49:43,224 INFO L79 Accepts]: Start accepts. Automaton has 185 states and 526 transitions. Word has length 20 [2025-04-13 17:49:43,224 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:43,224 INFO L485 AbstractCegarLoop]: Abstraction has 185 states and 526 transitions. [2025-04-13 17:49:43,224 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 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) [2025-04-13 17:49:43,224 INFO L278 IsEmpty]: Start isEmpty. Operand 185 states and 526 transitions. [2025-04-13 17:49:43,224 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:49:43,225 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:43,225 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:43,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2025-04-13 17:49:43,425 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:43,426 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:43,426 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1481282272, now seen corresponding path program 42 times [2025-04-13 17:49:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:43,426 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891857413] [2025-04-13 17:49:43,426 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:49:43,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:43,433 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:49:43,444 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:43,444 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:49:43,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:49:43,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:43,971 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891857413] [2025-04-13 17:49:43,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891857413] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:43,972 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501904948] [2025-04-13 17:49:43,972 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:49:43,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:43,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:43,973 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:43,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-04-13 17:49:44,079 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:49:44,099 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:44,099 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:49:44,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:44,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:49:44,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:44,222 INFO L354 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 158 treesize of output 102 [2025-04-13 17:49:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:44,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:44,955 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:44,955 INFO L354 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 258 treesize of output 170 [2025-04-13 17:49:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:45,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501904948] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:45,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:45,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 28 [2025-04-13 17:49:45,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204547701] [2025-04-13 17:49:45,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:45,247 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 17:49:45,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:45,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 17:49:45,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2025-04-13 17:49:45,247 INFO L87 Difference]: Start difference. First operand 185 states and 526 transitions. Second operand has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 29 states have internal predecessors, (50), 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) [2025-04-13 17:49:47,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:47,892 INFO L93 Difference]: Finished difference Result 372 states and 939 transitions. [2025-04-13 17:49:47,895 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 17:49:47,896 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 29 states have internal predecessors, (50), 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) Word has length 20 [2025-04-13 17:49:47,896 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:47,897 INFO L225 Difference]: With dead ends: 372 [2025-04-13 17:49:47,897 INFO L226 Difference]: Without dead ends: 359 [2025-04-13 17:49:47,898 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=367, Invalid=2939, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 17:49:47,898 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 124 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:47,898 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 0 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 17:49:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2025-04-13 17:49:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 199. [2025-04-13 17:49:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.974747474747475) internal successors, (589), 198 states have internal predecessors, (589), 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) [2025-04-13 17:49:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 589 transitions. [2025-04-13 17:49:48,116 INFO L79 Accepts]: Start accepts. Automaton has 199 states and 589 transitions. Word has length 20 [2025-04-13 17:49:48,116 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:48,116 INFO L485 AbstractCegarLoop]: Abstraction has 199 states and 589 transitions. [2025-04-13 17:49:48,116 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 29 states have internal predecessors, (50), 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) [2025-04-13 17:49:48,116 INFO L278 IsEmpty]: Start isEmpty. Operand 199 states and 589 transitions. [2025-04-13 17:49:48,117 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:49:48,117 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:48,117 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:48,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2025-04-13 17:49:48,317 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2025-04-13 17:49:48,318 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:48,318 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash -126238914, now seen corresponding path program 43 times [2025-04-13 17:49:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:48,319 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2279666] [2025-04-13 17:49:48,319 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:49:48,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:48,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:49:48,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:48,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:49:48,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:49:48,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:48,805 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2279666] [2025-04-13 17:49:48,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2279666] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:48,805 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807921810] [2025-04-13 17:49:48,805 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:49:48,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:48,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:48,807 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:48,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-04-13 17:49:48,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:49:48,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:48,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:49:48,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:48,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:49:48,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:49,130 INFO L354 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 144 treesize of output 78 [2025-04-13 17:49:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:49,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:49,780 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:49,780 INFO L354 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 351 treesize of output 207 [2025-04-13 17:49:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:50,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807921810] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:50,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:50,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2025-04-13 17:49:50,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839924646] [2025-04-13 17:49:50,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:50,025 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 17:49:50,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:50,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 17:49:50,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:49:50,025 INFO L87 Difference]: Start difference. First operand 199 states and 589 transitions. Second operand has 30 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 states have internal predecessors, (49), 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) [2025-04-13 17:49:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:52,904 INFO L93 Difference]: Finished difference Result 411 states and 1064 transitions. [2025-04-13 17:49:52,904 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 17:49:52,904 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 states have internal predecessors, (49), 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) Word has length 20 [2025-04-13 17:49:52,904 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:52,906 INFO L225 Difference]: With dead ends: 411 [2025-04-13 17:49:52,906 INFO L226 Difference]: Without dead ends: 384 [2025-04-13 17:49:52,906 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=401, Invalid=3381, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 17:49:52,907 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 136 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:52,907 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 0 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 17:49:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2025-04-13 17:49:53,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 223. [2025-04-13 17:49:53,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 3.1126126126126126) internal successors, (691), 222 states have internal predecessors, (691), 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) [2025-04-13 17:49:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 691 transitions. [2025-04-13 17:49:53,141 INFO L79 Accepts]: Start accepts. Automaton has 223 states and 691 transitions. Word has length 20 [2025-04-13 17:49:53,141 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:53,141 INFO L485 AbstractCegarLoop]: Abstraction has 223 states and 691 transitions. [2025-04-13 17:49:53,141 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 states have internal predecessors, (49), 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) [2025-04-13 17:49:53,141 INFO L278 IsEmpty]: Start isEmpty. Operand 223 states and 691 transitions. [2025-04-13 17:49:53,142 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:49:53,142 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:53,142 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:53,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2025-04-13 17:49:53,342 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2025-04-13 17:49:53,342 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:53,343 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash -237061434, now seen corresponding path program 44 times [2025-04-13 17:49:53,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:53,343 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268556209] [2025-04-13 17:49:53,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:49:53,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:53,349 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:49:53,358 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:53,358 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:49:53,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:49:53,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:53,800 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268556209] [2025-04-13 17:49:53,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268556209] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:53,800 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414060114] [2025-04-13 17:49:53,800 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:49:53,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:53,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:53,802 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:53,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-04-13 17:49:53,911 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:49:53,933 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:49:53,933 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:49:53,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:53,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 17:49:53,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:54,049 INFO L354 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 137 treesize of output 89 [2025-04-13 17:49:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:49:54,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:54,716 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:54,716 INFO L354 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 193 treesize of output 137 [2025-04-13 17:49:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:54,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414060114] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:54,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:54,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 26 [2025-04-13 17:49:54,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332441046] [2025-04-13 17:49:54,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:54,991 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 17:49:54,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:54,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 17:49:54,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:49:54,991 INFO L87 Difference]: Start difference. First operand 223 states and 691 transitions. Second operand has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 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) [2025-04-13 17:49:56,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:56,540 INFO L93 Difference]: Finished difference Result 337 states and 925 transitions. [2025-04-13 17:49:56,540 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 17:49:56,540 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 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) Word has length 20 [2025-04-13 17:49:56,540 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:56,542 INFO L225 Difference]: With dead ends: 337 [2025-04-13 17:49:56,542 INFO L226 Difference]: Without dead ends: 328 [2025-04-13 17:49:56,542 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=257, Invalid=1813, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 17:49:56,542 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:56,542 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:49:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2025-04-13 17:49:56,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 223. [2025-04-13 17:49:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 3.1126126126126126) internal successors, (691), 222 states have internal predecessors, (691), 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) [2025-04-13 17:49:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 691 transitions. [2025-04-13 17:49:56,757 INFO L79 Accepts]: Start accepts. Automaton has 223 states and 691 transitions. Word has length 20 [2025-04-13 17:49:56,757 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:49:56,757 INFO L485 AbstractCegarLoop]: Abstraction has 223 states and 691 transitions. [2025-04-13 17:49:56,757 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 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) [2025-04-13 17:49:56,757 INFO L278 IsEmpty]: Start isEmpty. Operand 223 states and 691 transitions. [2025-04-13 17:49:56,758 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:49:56,758 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:49:56,758 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:49:56,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2025-04-13 17:49:56,958 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-04-13 17:49:56,958 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:49:56,959 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:49:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash -203904504, now seen corresponding path program 45 times [2025-04-13 17:49:56,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:49:56,959 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482758338] [2025-04-13 17:49:56,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:49:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:49:56,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:49:56,977 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 20 statements. [2025-04-13 17:49:56,977 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:49:56,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:57,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:49:57,394 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482758338] [2025-04-13 17:49:57,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482758338] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:49:57,395 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261476116] [2025-04-13 17:49:57,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:49:57,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:49:57,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:49:57,396 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:49:57,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2025-04-13 17:49:57,511 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:49:57,530 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 20 statements. [2025-04-13 17:49:57,531 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:49:57,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:49:57,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:49:57,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:49:57,776 INFO L354 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 98 treesize of output 62 [2025-04-13 17:49:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:57,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:49:58,314 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:49:58,315 INFO L354 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 304 treesize of output 180 [2025-04-13 17:49:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:49:58,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261476116] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:49:58,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:49:58,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 26 [2025-04-13 17:49:58,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245378912] [2025-04-13 17:49:58,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:49:58,622 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 17:49:58,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:49:58,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 17:49:58,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:49:58,623 INFO L87 Difference]: Start difference. First operand 223 states and 691 transitions. Second operand has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 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) [2025-04-13 17:49:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:49:59,945 INFO L93 Difference]: Finished difference Result 298 states and 837 transitions. [2025-04-13 17:49:59,945 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 17:49:59,946 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 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) Word has length 20 [2025-04-13 17:49:59,946 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:49:59,947 INFO L225 Difference]: With dead ends: 298 [2025-04-13 17:49:59,947 INFO L226 Difference]: Without dead ends: 289 [2025-04-13 17:49:59,947 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=216, Invalid=1424, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 17:49:59,948 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:49:59,948 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:49:59,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2025-04-13 17:50:00,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 229. [2025-04-13 17:50:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 3.1228070175438596) internal successors, (712), 228 states have internal predecessors, (712), 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) [2025-04-13 17:50:00,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 712 transitions. [2025-04-13 17:50:00,175 INFO L79 Accepts]: Start accepts. Automaton has 229 states and 712 transitions. Word has length 20 [2025-04-13 17:50:00,175 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:00,175 INFO L485 AbstractCegarLoop]: Abstraction has 229 states and 712 transitions. [2025-04-13 17:50:00,175 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 27 states have internal predecessors, (48), 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) [2025-04-13 17:50:00,175 INFO L278 IsEmpty]: Start isEmpty. Operand 229 states and 712 transitions. [2025-04-13 17:50:00,175 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:00,175 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:00,175 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:00,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2025-04-13 17:50:00,376 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-04-13 17:50:00,376 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:00,376 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:00,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1347610776, now seen corresponding path program 46 times [2025-04-13 17:50:00,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:00,376 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512550024] [2025-04-13 17:50:00,376 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:50:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:00,383 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:50:00,389 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:00,389 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:50:00,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:00,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:00,699 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512550024] [2025-04-13 17:50:00,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512550024] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:00,699 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142296985] [2025-04-13 17:50:00,699 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:50:00,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:00,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:00,702 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:00,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2025-04-13 17:50:00,816 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:50:00,837 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:00,837 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:50:00,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:00,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 17:50:00,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:01,114 INFO L354 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 77 treesize of output 49 [2025-04-13 17:50:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:50:01,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:01,770 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:01,771 INFO L354 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 334 treesize of output 194 [2025-04-13 17:50:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:02,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142296985] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:02,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:02,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 27 [2025-04-13 17:50:02,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825148423] [2025-04-13 17:50:02,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:02,040 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:50:02,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:02,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:50:02,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:50:02,041 INFO L87 Difference]: Start difference. First operand 229 states and 712 transitions. Second operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 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) [2025-04-13 17:50:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:06,616 INFO L93 Difference]: Finished difference Result 426 states and 1133 transitions. [2025-04-13 17:50:06,616 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-04-13 17:50:06,616 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 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) Word has length 20 [2025-04-13 17:50:06,616 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:06,618 INFO L225 Difference]: With dead ends: 426 [2025-04-13 17:50:06,619 INFO L226 Difference]: Without dead ends: 392 [2025-04-13 17:50:06,619 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=650, Invalid=4180, Unknown=0, NotChecked=0, Total=4830 [2025-04-13 17:50:06,619 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 146 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:06,620 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 0 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:50:06,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2025-04-13 17:50:06,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 250. [2025-04-13 17:50:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 3.1646586345381524) internal successors, (788), 249 states have internal predecessors, (788), 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) [2025-04-13 17:50:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 788 transitions. [2025-04-13 17:50:06,877 INFO L79 Accepts]: Start accepts. Automaton has 250 states and 788 transitions. Word has length 20 [2025-04-13 17:50:06,877 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:06,877 INFO L485 AbstractCegarLoop]: Abstraction has 250 states and 788 transitions. [2025-04-13 17:50:06,877 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 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) [2025-04-13 17:50:06,877 INFO L278 IsEmpty]: Start isEmpty. Operand 250 states and 788 transitions. [2025-04-13 17:50:06,878 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:06,878 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:06,878 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:06,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2025-04-13 17:50:07,078 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-04-13 17:50:07,079 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:07,079 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:07,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1400196696, now seen corresponding path program 47 times [2025-04-13 17:50:07,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:07,079 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921907550] [2025-04-13 17:50:07,079 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:50:07,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:07,085 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:07,092 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:07,092 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:50:07,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:50:07,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:07,574 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921907550] [2025-04-13 17:50:07,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921907550] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:07,574 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422438545] [2025-04-13 17:50:07,574 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:50:07,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:07,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:07,576 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:07,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2025-04-13 17:50:07,686 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:07,706 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:07,706 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:50:07,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:07,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-04-13 17:50:07,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:07,731 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:50:07,744 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:50:08,018 INFO L354 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 116 treesize of output 76 [2025-04-13 17:50:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:50:08,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:09,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422438545] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:09,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:09,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 9] total 32 [2025-04-13 17:50:09,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053277138] [2025-04-13 17:50:09,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:09,456 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 17:50:09,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:09,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 17:50:09,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 17:50:09,457 INFO L87 Difference]: Start difference. First operand 250 states and 788 transitions. Second operand has 33 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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) [2025-04-13 17:50:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:12,984 INFO L93 Difference]: Finished difference Result 401 states and 1102 transitions. [2025-04-13 17:50:12,984 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 17:50:12,984 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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) Word has length 20 [2025-04-13 17:50:12,984 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:12,986 INFO L225 Difference]: With dead ends: 401 [2025-04-13 17:50:12,986 INFO L226 Difference]: Without dead ends: 389 [2025-04-13 17:50:12,986 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=372, Invalid=2934, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 17:50:12,986 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 115 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:12,986 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 0 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:50:12,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2025-04-13 17:50:13,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 262. [2025-04-13 17:50:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.203065134099617) internal successors, (836), 261 states have internal predecessors, (836), 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) [2025-04-13 17:50:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 836 transitions. [2025-04-13 17:50:13,251 INFO L79 Accepts]: Start accepts. Automaton has 262 states and 836 transitions. Word has length 20 [2025-04-13 17:50:13,251 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:13,251 INFO L485 AbstractCegarLoop]: Abstraction has 262 states and 836 transitions. [2025-04-13 17:50:13,251 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 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) [2025-04-13 17:50:13,251 INFO L278 IsEmpty]: Start isEmpty. Operand 262 states and 836 transitions. [2025-04-13 17:50:13,251 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:13,251 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:13,251 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:13,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2025-04-13 17:50:13,452 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-04-13 17:50:13,452 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:13,452 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:13,452 INFO L85 PathProgramCache]: Analyzing trace with hash -381436558, now seen corresponding path program 48 times [2025-04-13 17:50:13,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:13,452 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694484864] [2025-04-13 17:50:13,452 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:50:13,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:13,459 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:13,469 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:13,469 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:50:13,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:50:13,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:13,988 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694484864] [2025-04-13 17:50:13,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694484864] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:13,988 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403135221] [2025-04-13 17:50:13,988 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:50:13,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:13,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:13,990 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:13,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2025-04-13 17:50:14,101 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:14,120 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:14,120 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:50:14,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:14,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:50:14,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:14,313 INFO L354 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 77 treesize of output 49 [2025-04-13 17:50:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:14,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:14,811 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:14,811 INFO L354 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 328 treesize of output 192 [2025-04-13 17:50:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:15,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403135221] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:15,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:15,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 29 [2025-04-13 17:50:15,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037209988] [2025-04-13 17:50:15,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:15,120 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 17:50:15,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:15,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 17:50:15,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:50:15,120 INFO L87 Difference]: Start difference. First operand 262 states and 836 transitions. Second operand has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 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) [2025-04-13 17:50:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:17,705 INFO L93 Difference]: Finished difference Result 426 states and 1195 transitions. [2025-04-13 17:50:17,705 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 17:50:17,705 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 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) Word has length 20 [2025-04-13 17:50:17,705 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:17,707 INFO L225 Difference]: With dead ends: 426 [2025-04-13 17:50:17,707 INFO L226 Difference]: Without dead ends: 413 [2025-04-13 17:50:17,707 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=333, Invalid=2529, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 17:50:17,707 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:17,708 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 17:50:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2025-04-13 17:50:18,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 284. [2025-04-13 17:50:18,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.2614840989399294) internal successors, (923), 283 states have internal predecessors, (923), 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) [2025-04-13 17:50:18,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 923 transitions. [2025-04-13 17:50:18,013 INFO L79 Accepts]: Start accepts. Automaton has 284 states and 923 transitions. Word has length 20 [2025-04-13 17:50:18,013 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:18,013 INFO L485 AbstractCegarLoop]: Abstraction has 284 states and 923 transitions. [2025-04-13 17:50:18,013 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 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) [2025-04-13 17:50:18,013 INFO L278 IsEmpty]: Start isEmpty. Operand 284 states and 923 transitions. [2025-04-13 17:50:18,014 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:18,014 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:18,014 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:18,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2025-04-13 17:50:18,214 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:18,215 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:18,215 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash -328850638, now seen corresponding path program 49 times [2025-04-13 17:50:18,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:18,215 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748905308] [2025-04-13 17:50:18,215 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:50:18,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:18,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:50:18,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:18,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:50:18,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:50:18,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:18,727 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748905308] [2025-04-13 17:50:18,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748905308] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:18,727 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709228076] [2025-04-13 17:50:18,727 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:50:18,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:18,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:18,729 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:18,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2025-04-13 17:50:18,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:50:18,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:18,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:50:18,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:18,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:50:18,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:19,019 INFO L354 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 137 treesize of output 77 [2025-04-13 17:50:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:19,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:19,679 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:19,679 INFO L354 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 223 treesize of output 151 [2025-04-13 17:50:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:19,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709228076] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:19,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:19,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2025-04-13 17:50:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999787074] [2025-04-13 17:50:19,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:19,967 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 17:50:19,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:19,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 17:50:19,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:50:19,967 INFO L87 Difference]: Start difference. First operand 284 states and 923 transitions. Second operand has 30 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 states have internal predecessors, (49), 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) [2025-04-13 17:50:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:23,670 INFO L93 Difference]: Finished difference Result 489 states and 1376 transitions. [2025-04-13 17:50:23,670 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 17:50:23,670 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 states have internal predecessors, (49), 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) Word has length 20 [2025-04-13 17:50:23,670 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:23,672 INFO L225 Difference]: With dead ends: 489 [2025-04-13 17:50:23,672 INFO L226 Difference]: Without dead ends: 472 [2025-04-13 17:50:23,673 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=485, Invalid=3805, Unknown=0, NotChecked=0, Total=4290 [2025-04-13 17:50:23,673 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:23,673 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 17:50:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2025-04-13 17:50:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 302. [2025-04-13 17:50:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.3421926910299002) internal successors, (1006), 301 states have internal predecessors, (1006), 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) [2025-04-13 17:50:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 1006 transitions. [2025-04-13 17:50:24,001 INFO L79 Accepts]: Start accepts. Automaton has 302 states and 1006 transitions. Word has length 20 [2025-04-13 17:50:24,001 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:24,001 INFO L485 AbstractCegarLoop]: Abstraction has 302 states and 1006 transitions. [2025-04-13 17:50:24,001 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 states have internal predecessors, (49), 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) [2025-04-13 17:50:24,001 INFO L278 IsEmpty]: Start isEmpty. Operand 302 states and 1006 transitions. [2025-04-13 17:50:24,002 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:24,002 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:24,002 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:24,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2025-04-13 17:50:24,207 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:24,207 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:24,207 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:24,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1936371824, now seen corresponding path program 50 times [2025-04-13 17:50:24,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:24,207 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071080122] [2025-04-13 17:50:24,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:50:24,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:24,213 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:50:24,221 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:24,221 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:50:24,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:50:24,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:24,701 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071080122] [2025-04-13 17:50:24,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071080122] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:24,702 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500176503] [2025-04-13 17:50:24,702 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:50:24,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:24,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:24,703 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:24,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2025-04-13 17:50:24,820 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:50:24,838 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:24,838 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:50:24,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:24,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 17:50:24,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:25,042 INFO L354 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 143 treesize of output 91 [2025-04-13 17:50:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:50:25,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:25,624 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:25,624 INFO L354 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 282 treesize of output 178 [2025-04-13 17:50:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500176503] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:25,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:25,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 28 [2025-04-13 17:50:25,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041008613] [2025-04-13 17:50:25,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:25,823 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 17:50:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:25,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 17:50:25,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2025-04-13 17:50:25,823 INFO L87 Difference]: Start difference. First operand 302 states and 1006 transitions. Second operand has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 29 states have internal predecessors, (51), 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) [2025-04-13 17:50:29,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:29,016 INFO L93 Difference]: Finished difference Result 542 states and 1613 transitions. [2025-04-13 17:50:29,016 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 17:50:29,016 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 29 states have internal predecessors, (51), 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) Word has length 20 [2025-04-13 17:50:29,016 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:29,018 INFO L225 Difference]: With dead ends: 542 [2025-04-13 17:50:29,018 INFO L226 Difference]: Without dead ends: 515 [2025-04-13 17:50:29,018 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=482, Invalid=3300, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 17:50:29,019 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:29,019 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:50:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2025-04-13 17:50:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2025-04-13 17:50:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.5126760563380284) internal successors, (1247), 355 states have internal predecessors, (1247), 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) [2025-04-13 17:50:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1247 transitions. [2025-04-13 17:50:29,390 INFO L79 Accepts]: Start accepts. Automaton has 356 states and 1247 transitions. Word has length 20 [2025-04-13 17:50:29,390 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:29,390 INFO L485 AbstractCegarLoop]: Abstraction has 356 states and 1247 transitions. [2025-04-13 17:50:29,390 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 29 states have internal predecessors, (51), 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) [2025-04-13 17:50:29,391 INFO L278 IsEmpty]: Start isEmpty. Operand 356 states and 1247 transitions. [2025-04-13 17:50:29,391 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:29,391 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:29,391 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:29,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2025-04-13 17:50:29,592 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:29,592 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:29,592 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:29,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2047194344, now seen corresponding path program 51 times [2025-04-13 17:50:29,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:29,592 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843516011] [2025-04-13 17:50:29,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:50:29,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:29,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:29,608 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:29,608 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:50:29,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:29,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:29,960 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843516011] [2025-04-13 17:50:29,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843516011] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:29,960 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379119545] [2025-04-13 17:50:29,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:50:29,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:29,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:29,962 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:29,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2025-04-13 17:50:30,080 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:30,099 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:30,099 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:50:30,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:30,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:50:30,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:30,292 INFO L354 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 117 treesize of output 77 [2025-04-13 17:50:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:30,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:30,948 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:30,949 INFO L354 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 254 treesize of output 174 [2025-04-13 17:50:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:31,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379119545] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:31,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:31,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 27 [2025-04-13 17:50:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059716725] [2025-04-13 17:50:31,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:31,277 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:50:31,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:31,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:50:31,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:50:31,278 INFO L87 Difference]: Start difference. First operand 356 states and 1247 transitions. Second operand has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 28 states have internal predecessors, (50), 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) [2025-04-13 17:50:33,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:33,727 INFO L93 Difference]: Finished difference Result 519 states and 1638 transitions. [2025-04-13 17:50:33,727 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 17:50:33,727 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 28 states have internal predecessors, (50), 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) Word has length 20 [2025-04-13 17:50:33,727 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:33,729 INFO L225 Difference]: With dead ends: 519 [2025-04-13 17:50:33,729 INFO L226 Difference]: Without dead ends: 510 [2025-04-13 17:50:33,730 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=279, Invalid=1977, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 17:50:33,730 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:33,730 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:50:33,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2025-04-13 17:50:34,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 376. [2025-04-13 17:50:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.5653333333333332) internal successors, (1337), 375 states have internal predecessors, (1337), 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) [2025-04-13 17:50:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1337 transitions. [2025-04-13 17:50:34,123 INFO L79 Accepts]: Start accepts. Automaton has 376 states and 1337 transitions. Word has length 20 [2025-04-13 17:50:34,123 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:34,123 INFO L485 AbstractCegarLoop]: Abstraction has 376 states and 1337 transitions. [2025-04-13 17:50:34,123 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 28 states have internal predecessors, (50), 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) [2025-04-13 17:50:34,123 INFO L278 IsEmpty]: Start isEmpty. Operand 376 states and 1337 transitions. [2025-04-13 17:50:34,124 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:34,124 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:34,124 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:34,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2025-04-13 17:50:34,325 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:34,325 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:34,325 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1963988081, now seen corresponding path program 52 times [2025-04-13 17:50:34,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:34,325 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312695972] [2025-04-13 17:50:34,325 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:50:34,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:34,332 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:50:34,340 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:34,340 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:50:34,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-13 17:50:34,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:34,601 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312695972] [2025-04-13 17:50:34,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312695972] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:34,602 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31317273] [2025-04-13 17:50:34,602 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:50:34,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:34,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:34,604 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:34,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2025-04-13 17:50:34,727 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:50:34,745 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:34,745 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:50:34,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:34,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:50:34,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:34,840 INFO L354 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 91 treesize of output 59 [2025-04-13 17:50:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-13 17:50:34,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:34,946 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:34,947 INFO L354 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 87 treesize of output 47 [2025-04-13 17:50:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-04-13 17:50:34,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31317273] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:34,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:34,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2025-04-13 17:50:34,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434410058] [2025-04-13 17:50:34,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:34,992 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:50:34,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:34,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:50:34,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:50:34,992 INFO L87 Difference]: Start difference. First operand 376 states and 1337 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 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) [2025-04-13 17:50:35,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:35,903 INFO L93 Difference]: Finished difference Result 421 states and 1417 transitions. [2025-04-13 17:50:35,903 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 17:50:35,903 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 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) Word has length 20 [2025-04-13 17:50:35,903 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:35,905 INFO L225 Difference]: With dead ends: 421 [2025-04-13 17:50:35,905 INFO L226 Difference]: Without dead ends: 413 [2025-04-13 17:50:35,905 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:50:35,906 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:35,906 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:50:35,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2025-04-13 17:50:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 376. [2025-04-13 17:50:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.5493333333333332) internal successors, (1331), 375 states have internal predecessors, (1331), 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) [2025-04-13 17:50:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1331 transitions. [2025-04-13 17:50:36,301 INFO L79 Accepts]: Start accepts. Automaton has 376 states and 1331 transitions. Word has length 20 [2025-04-13 17:50:36,301 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:36,301 INFO L485 AbstractCegarLoop]: Abstraction has 376 states and 1331 transitions. [2025-04-13 17:50:36,301 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 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) [2025-04-13 17:50:36,301 INFO L278 IsEmpty]: Start isEmpty. Operand 376 states and 1331 transitions. [2025-04-13 17:50:36,302 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:36,302 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:36,302 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:36,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2025-04-13 17:50:36,502 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2025-04-13 17:50:36,503 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:36,503 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:36,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1852670936, now seen corresponding path program 53 times [2025-04-13 17:50:36,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:36,503 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386172135] [2025-04-13 17:50:36,503 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:50:36,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:36,509 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:36,516 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:36,516 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:50:36,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:50:37,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:37,007 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386172135] [2025-04-13 17:50:37,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386172135] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:37,007 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427304767] [2025-04-13 17:50:37,007 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:50:37,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:37,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:37,008 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:37,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2025-04-13 17:50:37,128 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:37,149 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:37,150 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:50:37,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:37,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:50:37,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:37,353 INFO L354 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 116 treesize of output 62 [2025-04-13 17:50:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:37,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:37,894 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:37,895 INFO L354 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 273 treesize of output 169 [2025-04-13 17:50:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427304767] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:38,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:38,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2025-04-13 17:50:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244232248] [2025-04-13 17:50:38,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:38,230 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:50:38,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:38,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:50:38,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:50:38,231 INFO L87 Difference]: Start difference. First operand 376 states and 1331 transitions. Second operand has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 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) [2025-04-13 17:50:40,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:40,263 INFO L93 Difference]: Finished difference Result 513 states and 1622 transitions. [2025-04-13 17:50:40,264 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 17:50:40,264 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 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) Word has length 20 [2025-04-13 17:50:40,264 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:40,266 INFO L225 Difference]: With dead ends: 513 [2025-04-13 17:50:40,266 INFO L226 Difference]: Without dead ends: 504 [2025-04-13 17:50:40,266 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=1508, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 17:50:40,266 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:40,266 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:50:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2025-04-13 17:50:40,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 404. [2025-04-13 17:50:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.555831265508685) internal successors, (1433), 403 states have internal predecessors, (1433), 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) [2025-04-13 17:50:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1433 transitions. [2025-04-13 17:50:40,692 INFO L79 Accepts]: Start accepts. Automaton has 404 states and 1433 transitions. Word has length 20 [2025-04-13 17:50:40,692 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:40,692 INFO L485 AbstractCegarLoop]: Abstraction has 404 states and 1433 transitions. [2025-04-13 17:50:40,692 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 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) [2025-04-13 17:50:40,692 INFO L278 IsEmpty]: Start isEmpty. Operand 404 states and 1433 transitions. [2025-04-13 17:50:40,693 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:40,693 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:40,693 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:40,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2025-04-13 17:50:40,893 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2025-04-13 17:50:40,893 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:40,894 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1905256856, now seen corresponding path program 54 times [2025-04-13 17:50:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:40,894 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963330887] [2025-04-13 17:50:40,894 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:50:40,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:40,900 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:40,916 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:40,917 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:50:40,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:50:41,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:41,392 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963330887] [2025-04-13 17:50:41,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963330887] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:41,392 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129896128] [2025-04-13 17:50:41,392 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:50:41,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:41,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:41,394 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:41,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2025-04-13 17:50:41,522 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:41,544 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:41,544 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:50:41,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:41,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-04-13 17:50:41,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:41,722 INFO L354 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 158 treesize of output 102 [2025-04-13 17:50:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:41,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:42,394 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:42,394 INFO L354 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 193 treesize of output 137 [2025-04-13 17:50:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:42,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129896128] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:42,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:42,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 30 [2025-04-13 17:50:42,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106261062] [2025-04-13 17:50:42,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:42,683 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 17:50:42,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:42,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 17:50:42,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:50:42,683 INFO L87 Difference]: Start difference. First operand 404 states and 1433 transitions. Second operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 31 states have internal predecessors, (54), 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) [2025-04-13 17:50:45,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:45,253 INFO L93 Difference]: Finished difference Result 523 states and 1685 transitions. [2025-04-13 17:50:45,253 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 17:50:45,253 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 31 states have internal predecessors, (54), 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) Word has length 20 [2025-04-13 17:50:45,253 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:45,255 INFO L225 Difference]: With dead ends: 523 [2025-04-13 17:50:45,255 INFO L226 Difference]: Without dead ends: 514 [2025-04-13 17:50:45,256 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=450, Invalid=2972, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 17:50:45,256 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 127 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:45,256 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 0 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:50:45,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2025-04-13 17:50:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 402. [2025-04-13 17:50:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.5511221945137157) internal successors, (1424), 401 states have internal predecessors, (1424), 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) [2025-04-13 17:50:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1424 transitions. [2025-04-13 17:50:45,684 INFO L79 Accepts]: Start accepts. Automaton has 402 states and 1424 transitions. Word has length 20 [2025-04-13 17:50:45,684 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:45,684 INFO L485 AbstractCegarLoop]: Abstraction has 402 states and 1424 transitions. [2025-04-13 17:50:45,684 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 31 states have internal predecessors, (54), 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) [2025-04-13 17:50:45,684 INFO L278 IsEmpty]: Start isEmpty. Operand 402 states and 1424 transitions. [2025-04-13 17:50:45,685 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:45,685 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:45,685 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:45,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2025-04-13 17:50:45,885 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:45,886 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:45,886 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:45,886 INFO L85 PathProgramCache]: Analyzing trace with hash 297735670, now seen corresponding path program 55 times [2025-04-13 17:50:45,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:45,886 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338199917] [2025-04-13 17:50:45,886 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:50:45,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:45,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:50:45,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:45,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:50:45,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:50:46,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:46,323 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338199917] [2025-04-13 17:50:46,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338199917] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:46,323 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471685385] [2025-04-13 17:50:46,324 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:50:46,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:46,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:46,325 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:46,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2025-04-13 17:50:46,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:50:46,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:46,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:50:46,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:46,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:50:46,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:46,660 INFO L354 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 194 treesize of output 104 [2025-04-13 17:50:46,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:46,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:47,281 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:47,281 INFO L354 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 371 treesize of output 219 [2025-04-13 17:50:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:47,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471685385] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:47,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:47,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2025-04-13 17:50:47,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053034350] [2025-04-13 17:50:47,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:47,626 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 17:50:47,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:47,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 17:50:47,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:50:47,627 INFO L87 Difference]: Start difference. First operand 402 states and 1424 transitions. Second operand has 30 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 states have internal predecessors, (49), 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) [2025-04-13 17:50:50,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:50,392 INFO L93 Difference]: Finished difference Result 555 states and 1771 transitions. [2025-04-13 17:50:50,392 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 17:50:50,392 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 states have internal predecessors, (49), 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) Word has length 20 [2025-04-13 17:50:50,393 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:50,395 INFO L225 Difference]: With dead ends: 555 [2025-04-13 17:50:50,395 INFO L226 Difference]: Without dead ends: 536 [2025-04-13 17:50:50,395 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=412, Invalid=3128, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 17:50:50,396 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 158 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:50,397 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 0 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:50:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2025-04-13 17:50:50,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 430. [2025-04-13 17:50:50,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.599067599067599) internal successors, (1544), 429 states have internal predecessors, (1544), 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) [2025-04-13 17:50:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1544 transitions. [2025-04-13 17:50:50,859 INFO L79 Accepts]: Start accepts. Automaton has 430 states and 1544 transitions. Word has length 20 [2025-04-13 17:50:50,859 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:50,859 INFO L485 AbstractCegarLoop]: Abstraction has 430 states and 1544 transitions. [2025-04-13 17:50:50,859 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 30 states have internal predecessors, (49), 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) [2025-04-13 17:50:50,859 INFO L278 IsEmpty]: Start isEmpty. Operand 430 states and 1544 transitions. [2025-04-13 17:50:50,861 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:50,861 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:50,861 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:50,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2025-04-13 17:50:51,061 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:51,061 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:51,062 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash 186913150, now seen corresponding path program 56 times [2025-04-13 17:50:51,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:51,062 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800881606] [2025-04-13 17:50:51,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:50:51,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:51,068 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:50:51,075 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:51,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:50:51,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:50:51,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:51,541 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800881606] [2025-04-13 17:50:51,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800881606] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:51,541 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516738639] [2025-04-13 17:50:51,541 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:50:51,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:51,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:51,543 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:51,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2025-04-13 17:50:51,670 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:50:51,688 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:50:51,689 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:50:51,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:51,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 17:50:51,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:51,884 INFO L354 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 182 treesize of output 118 [2025-04-13 17:50:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:50:51,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:52,681 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:52,681 INFO L354 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 374 treesize of output 230 [2025-04-13 17:50:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:52,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516738639] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:52,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:52,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 30 [2025-04-13 17:50:52,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232012980] [2025-04-13 17:50:52,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:52,940 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 17:50:52,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:52,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 17:50:52,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:50:52,941 INFO L87 Difference]: Start difference. First operand 430 states and 1544 transitions. Second operand has 31 states, 30 states have (on average 1.8) internal successors, (54), 31 states have internal predecessors, (54), 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) [2025-04-13 17:50:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:50:56,797 INFO L93 Difference]: Finished difference Result 616 states and 1894 transitions. [2025-04-13 17:50:56,797 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 17:50:56,798 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 31 states have internal predecessors, (54), 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) Word has length 20 [2025-04-13 17:50:56,798 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:50:56,800 INFO L225 Difference]: With dead ends: 616 [2025-04-13 17:50:56,800 INFO L226 Difference]: Without dead ends: 585 [2025-04-13 17:50:56,800 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=600, Invalid=3690, Unknown=0, NotChecked=0, Total=4290 [2025-04-13 17:50:56,801 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:50:56,801 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:50:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2025-04-13 17:50:57,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 442. [2025-04-13 17:50:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.614512471655329) internal successors, (1594), 441 states have internal predecessors, (1594), 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) [2025-04-13 17:50:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1594 transitions. [2025-04-13 17:50:57,274 INFO L79 Accepts]: Start accepts. Automaton has 442 states and 1594 transitions. Word has length 20 [2025-04-13 17:50:57,274 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:50:57,274 INFO L485 AbstractCegarLoop]: Abstraction has 442 states and 1594 transitions. [2025-04-13 17:50:57,274 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.8) internal successors, (54), 31 states have internal predecessors, (54), 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) [2025-04-13 17:50:57,274 INFO L278 IsEmpty]: Start isEmpty. Operand 442 states and 1594 transitions. [2025-04-13 17:50:57,274 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:50:57,275 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:50:57,275 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:50:57,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2025-04-13 17:50:57,475 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2025-04-13 17:50:57,475 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:50:57,475 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:50:57,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2004186456, now seen corresponding path program 57 times [2025-04-13 17:50:57,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:50:57,475 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754259523] [2025-04-13 17:50:57,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:50:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:50:57,483 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:57,491 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 20 statements. [2025-04-13 17:50:57,491 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:50:57,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:57,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:50:57,843 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754259523] [2025-04-13 17:50:57,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754259523] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:50:57,843 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326180432] [2025-04-13 17:50:57,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:50:57,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:50:57,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:50:57,845 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:50:57,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2025-04-13 17:50:57,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:50:57,987 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 20 statements. [2025-04-13 17:50:57,987 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:50:57,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:50:57,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 17:50:57,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:50:58,270 INFO L354 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 143 treesize of output 91 [2025-04-13 17:50:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:58,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:50:58,942 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:50:58,942 INFO L354 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 288 treesize of output 180 [2025-04-13 17:50:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:50:59,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326180432] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:50:59,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:50:59,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 27 [2025-04-13 17:50:59,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332067782] [2025-04-13 17:50:59,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:50:59,140 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:50:59,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:50:59,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:50:59,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:50:59,141 INFO L87 Difference]: Start difference. First operand 442 states and 1594 transitions. Second operand has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 28 states have internal predecessors, (50), 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) [2025-04-13 17:51:01,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:51:01,646 INFO L93 Difference]: Finished difference Result 561 states and 1843 transitions. [2025-04-13 17:51:01,646 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 17:51:01,646 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 28 states have internal predecessors, (50), 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) Word has length 20 [2025-04-13 17:51:01,647 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:51:01,649 INFO L225 Difference]: With dead ends: 561 [2025-04-13 17:51:01,649 INFO L226 Difference]: Without dead ends: 540 [2025-04-13 17:51:01,649 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=350, Invalid=2100, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 17:51:01,649 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 134 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:51:01,649 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 0 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:51:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2025-04-13 17:51:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 462. [2025-04-13 17:51:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 3.6008676789587852) internal successors, (1660), 461 states have internal predecessors, (1660), 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) [2025-04-13 17:51:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1660 transitions. [2025-04-13 17:51:02,148 INFO L79 Accepts]: Start accepts. Automaton has 462 states and 1660 transitions. Word has length 20 [2025-04-13 17:51:02,148 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:51:02,148 INFO L485 AbstractCegarLoop]: Abstraction has 462 states and 1660 transitions. [2025-04-13 17:51:02,149 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 28 states have internal predecessors, (50), 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) [2025-04-13 17:51:02,149 INFO L278 IsEmpty]: Start isEmpty. Operand 462 states and 1660 transitions. [2025-04-13 17:51:02,149 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:51:02,149 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:51:02,149 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:51:02,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2025-04-13 17:51:02,350 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2025-04-13 17:51:02,350 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:51:02,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:51:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1431311664, now seen corresponding path program 58 times [2025-04-13 17:51:02,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:51:02,350 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985004791] [2025-04-13 17:51:02,350 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:51:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:51:02,357 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:51:02,366 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:02,366 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:51:02,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:51:02,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:51:02,759 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985004791] [2025-04-13 17:51:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985004791] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:51:02,759 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499188021] [2025-04-13 17:51:02,759 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:51:02,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:02,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:51:02,761 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:51:02,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2025-04-13 17:51:02,892 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:51:02,911 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:02,911 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:51:02,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:02,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 17:51:02,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:51:03,176 INFO L354 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 169 treesize of output 91 [2025-04-13 17:51:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:51:03,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:51:04,007 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:51:04,008 INFO L354 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 379 treesize of output 221 [2025-04-13 17:51:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:04,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499188021] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:51:04,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:51:04,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 30 [2025-04-13 17:51:04,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155635588] [2025-04-13 17:51:04,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:51:04,261 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 17:51:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:51:04,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 17:51:04,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:51:04,261 INFO L87 Difference]: Start difference. First operand 462 states and 1660 transitions. Second operand has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 31 states have internal predecessors, (53), 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) [2025-04-13 17:51:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:51:07,306 INFO L93 Difference]: Finished difference Result 581 states and 1913 transitions. [2025-04-13 17:51:07,306 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 17:51:07,306 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 31 states have internal predecessors, (53), 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) Word has length 20 [2025-04-13 17:51:07,307 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:51:07,309 INFO L225 Difference]: With dead ends: 581 [2025-04-13 17:51:07,309 INFO L226 Difference]: Without dead ends: 562 [2025-04-13 17:51:07,310 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=329, Invalid=2323, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 17:51:07,310 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 98 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:51:07,310 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 0 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:51:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2025-04-13 17:51:07,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 474. [2025-04-13 17:51:07,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 3.6067653276955602) internal successors, (1706), 473 states have internal predecessors, (1706), 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) [2025-04-13 17:51:07,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1706 transitions. [2025-04-13 17:51:07,839 INFO L79 Accepts]: Start accepts. Automaton has 474 states and 1706 transitions. Word has length 20 [2025-04-13 17:51:07,839 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:51:07,839 INFO L485 AbstractCegarLoop]: Abstraction has 474 states and 1706 transitions. [2025-04-13 17:51:07,839 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 31 states have internal predecessors, (53), 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) [2025-04-13 17:51:07,839 INFO L278 IsEmpty]: Start isEmpty. Operand 474 states and 1706 transitions. [2025-04-13 17:51:07,839 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:51:07,840 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:51:07,840 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:51:07,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2025-04-13 17:51:08,040 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:08,040 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:51:08,040 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:51:08,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1542134184, now seen corresponding path program 59 times [2025-04-13 17:51:08,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:51:08,041 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687483477] [2025-04-13 17:51:08,041 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:51:08,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:51:08,047 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:51:08,054 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:08,054 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:51:08,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:51:08,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:51:08,515 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687483477] [2025-04-13 17:51:08,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687483477] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:51:08,515 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794110610] [2025-04-13 17:51:08,515 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:51:08,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:08,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:51:08,517 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:51:08,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2025-04-13 17:51:08,645 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:51:08,666 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:08,666 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:51:08,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:08,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-04-13 17:51:08,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:51:08,883 INFO L354 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 214 treesize of output 118 [2025-04-13 17:51:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:08,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:51:09,794 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:51:09,795 INFO L354 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 283 treesize of output 184 [2025-04-13 17:51:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794110610] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:51:09,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:51:09,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2025-04-13 17:51:09,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711603062] [2025-04-13 17:51:09,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:51:09,998 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:51:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:51:09,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:51:09,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:51:09,998 INFO L87 Difference]: Start difference. First operand 474 states and 1706 transitions. Second operand has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2025-04-13 17:51:14,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:51:14,328 INFO L93 Difference]: Finished difference Result 639 states and 2071 transitions. [2025-04-13 17:51:14,328 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 17:51:14,328 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) Word has length 20 [2025-04-13 17:51:14,328 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:51:14,331 INFO L225 Difference]: With dead ends: 639 [2025-04-13 17:51:14,331 INFO L226 Difference]: Without dead ends: 612 [2025-04-13 17:51:14,332 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=401, Invalid=2355, Unknown=0, NotChecked=0, Total=2756 [2025-04-13 17:51:14,332 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:51:14,332 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 0 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:51:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2025-04-13 17:51:14,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 498. [2025-04-13 17:51:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.641851106639839) internal successors, (1810), 497 states have internal predecessors, (1810), 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) [2025-04-13 17:51:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1810 transitions. [2025-04-13 17:51:14,880 INFO L79 Accepts]: Start accepts. Automaton has 498 states and 1810 transitions. Word has length 20 [2025-04-13 17:51:14,881 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:51:14,881 INFO L485 AbstractCegarLoop]: Abstraction has 498 states and 1810 transitions. [2025-04-13 17:51:14,881 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2025-04-13 17:51:14,881 INFO L278 IsEmpty]: Start isEmpty. Operand 498 states and 1810 transitions. [2025-04-13 17:51:14,881 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:51:14,881 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:51:14,882 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:51:14,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2025-04-13 17:51:15,082 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2025-04-13 17:51:15,082 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:51:15,082 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:51:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash -792494986, now seen corresponding path program 60 times [2025-04-13 17:51:15,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:51:15,082 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338362639] [2025-04-13 17:51:15,082 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:51:15,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:51:15,089 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:51:15,098 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:15,098 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:51:15,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:51:15,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:51:15,601 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338362639] [2025-04-13 17:51:15,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338362639] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:51:15,601 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565362713] [2025-04-13 17:51:15,601 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:51:15,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:15,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:51:15,603 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:51:15,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2025-04-13 17:51:15,732 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:51:15,751 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:15,751 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:51:15,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:15,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:51:15,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:51:16,025 INFO L354 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 77 treesize of output 49 [2025-04-13 17:51:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:16,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:51:16,732 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:51:16,732 INFO L354 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 311 treesize of output 185 [2025-04-13 17:51:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:16,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565362713] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:51:16,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:51:16,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 30 [2025-04-13 17:51:16,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934779942] [2025-04-13 17:51:16,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:51:16,953 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 17:51:16,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:51:16,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 17:51:16,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:51:16,953 INFO L87 Difference]: Start difference. First operand 498 states and 1810 transitions. Second operand has 31 states, 30 states have (on average 1.7) internal successors, (51), 31 states have internal predecessors, (51), 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) [2025-04-13 17:51:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:51:19,822 INFO L93 Difference]: Finished difference Result 576 states and 1943 transitions. [2025-04-13 17:51:19,822 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 17:51:19,822 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7) internal successors, (51), 31 states have internal predecessors, (51), 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) Word has length 20 [2025-04-13 17:51:19,822 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:51:19,825 INFO L225 Difference]: With dead ends: 576 [2025-04-13 17:51:19,825 INFO L226 Difference]: Without dead ends: 563 [2025-04-13 17:51:19,825 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=344, Invalid=2412, Unknown=0, NotChecked=0, Total=2756 [2025-04-13 17:51:19,825 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:51:19,825 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:51:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2025-04-13 17:51:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 514. [2025-04-13 17:51:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.6003898635477585) internal successors, (1847), 513 states have internal predecessors, (1847), 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) [2025-04-13 17:51:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1847 transitions. [2025-04-13 17:51:20,425 INFO L79 Accepts]: Start accepts. Automaton has 514 states and 1847 transitions. Word has length 20 [2025-04-13 17:51:20,425 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:51:20,425 INFO L485 AbstractCegarLoop]: Abstraction has 514 states and 1847 transitions. [2025-04-13 17:51:20,425 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7) internal successors, (51), 31 states have internal predecessors, (51), 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) [2025-04-13 17:51:20,425 INFO L278 IsEmpty]: Start isEmpty. Operand 514 states and 1847 transitions. [2025-04-13 17:51:20,426 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:51:20,426 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:51:20,426 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:51:20,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2025-04-13 17:51:20,626 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:20,626 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:51:20,627 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:51:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash 759020294, now seen corresponding path program 61 times [2025-04-13 17:51:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:51:20,627 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499469287] [2025-04-13 17:51:20,627 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:51:20,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:51:20,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:51:20,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:20,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:51:20,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:51:21,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:51:21,088 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499469287] [2025-04-13 17:51:21,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499469287] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:51:21,088 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482315151] [2025-04-13 17:51:21,089 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:51:21,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:21,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:51:21,090 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:51:21,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2025-04-13 17:51:21,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:51:21,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:21,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:51:21,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:21,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:51:21,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:51:21,413 INFO L354 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 136 treesize of output 76 [2025-04-13 17:51:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:21,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:51:22,145 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:51:22,145 INFO L354 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 218 treesize of output 142 [2025-04-13 17:51:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:22,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482315151] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:51:22,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:51:22,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2025-04-13 17:51:22,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302191386] [2025-04-13 17:51:22,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:51:22,406 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 17:51:22,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:51:22,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 17:51:22,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:51:22,406 INFO L87 Difference]: Start difference. First operand 514 states and 1847 transitions. Second operand has 30 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 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) [2025-04-13 17:51:25,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:51:25,281 INFO L93 Difference]: Finished difference Result 616 states and 2065 transitions. [2025-04-13 17:51:25,281 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 17:51:25,281 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 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) Word has length 20 [2025-04-13 17:51:25,282 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:51:25,284 INFO L225 Difference]: With dead ends: 616 [2025-04-13 17:51:25,284 INFO L226 Difference]: Without dead ends: 607 [2025-04-13 17:51:25,284 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=331, Invalid=2425, Unknown=0, NotChecked=0, Total=2756 [2025-04-13 17:51:25,284 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 182 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:51:25,285 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 0 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:51:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2025-04-13 17:51:25,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 528. [2025-04-13 17:51:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 3.5939278937381403) internal successors, (1894), 527 states have internal predecessors, (1894), 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) [2025-04-13 17:51:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1894 transitions. [2025-04-13 17:51:25,904 INFO L79 Accepts]: Start accepts. Automaton has 528 states and 1894 transitions. Word has length 20 [2025-04-13 17:51:25,904 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:51:25,904 INFO L485 AbstractCegarLoop]: Abstraction has 528 states and 1894 transitions. [2025-04-13 17:51:25,904 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 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) [2025-04-13 17:51:25,904 INFO L278 IsEmpty]: Start isEmpty. Operand 528 states and 1894 transitions. [2025-04-13 17:51:25,905 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:51:25,905 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:51:25,905 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:51:25,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2025-04-13 17:51:26,105 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:26,106 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:51:26,106 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:51:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash 811606214, now seen corresponding path program 62 times [2025-04-13 17:51:26,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:51:26,106 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540967903] [2025-04-13 17:51:26,106 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:51:26,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:51:26,112 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:51:26,120 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:26,120 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:51:26,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:51:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:51:26,571 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540967903] [2025-04-13 17:51:26,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540967903] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:51:26,571 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322258088] [2025-04-13 17:51:26,571 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:51:26,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:26,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:51:26,573 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:51:26,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2025-04-13 17:51:26,709 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:51:26,728 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:26,728 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:51:26,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:26,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 17:51:26,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:51:26,949 INFO L354 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 182 treesize of output 118 [2025-04-13 17:51:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:51:27,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:51:27,859 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:51:27,859 INFO L354 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 302 treesize of output 196 [2025-04-13 17:51:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:28,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322258088] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:51:28,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:51:28,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 29 [2025-04-13 17:51:28,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116746012] [2025-04-13 17:51:28,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:51:28,118 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 17:51:28,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:51:28,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 17:51:28,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:51:28,119 INFO L87 Difference]: Start difference. First operand 528 states and 1894 transitions. Second operand has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 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) [2025-04-13 17:51:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:51:32,929 INFO L93 Difference]: Finished difference Result 782 states and 2482 transitions. [2025-04-13 17:51:32,930 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 17:51:32,930 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 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) Word has length 20 [2025-04-13 17:51:32,930 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:51:32,932 INFO L225 Difference]: With dead ends: 782 [2025-04-13 17:51:32,932 INFO L226 Difference]: Without dead ends: 749 [2025-04-13 17:51:32,933 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=570, Invalid=3336, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 17:51:32,933 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 162 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:51:32,933 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 0 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:51:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2025-04-13 17:51:33,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 566. [2025-04-13 17:51:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 3.6194690265486726) internal successors, (2045), 565 states have internal predecessors, (2045), 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) [2025-04-13 17:51:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 2045 transitions. [2025-04-13 17:51:33,610 INFO L79 Accepts]: Start accepts. Automaton has 566 states and 2045 transitions. Word has length 20 [2025-04-13 17:51:33,610 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:51:33,610 INFO L485 AbstractCegarLoop]: Abstraction has 566 states and 2045 transitions. [2025-04-13 17:51:33,610 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 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) [2025-04-13 17:51:33,610 INFO L278 IsEmpty]: Start isEmpty. Operand 566 states and 2045 transitions. [2025-04-13 17:51:33,611 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:51:33,611 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:51:33,611 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:51:33,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2025-04-13 17:51:33,811 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2025-04-13 17:51:33,811 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:51:33,812 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:51:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash -970027040, now seen corresponding path program 63 times [2025-04-13 17:51:33,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:51:33,812 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776697895] [2025-04-13 17:51:33,812 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:51:33,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:51:33,818 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:51:33,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:33,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:51:33,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:34,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:51:34,140 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776697895] [2025-04-13 17:51:34,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776697895] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:51:34,140 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882656507] [2025-04-13 17:51:34,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:51:34,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:34,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:51:34,142 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:51:34,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2025-04-13 17:51:34,277 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:51:34,297 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:34,297 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:51:34,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:34,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:51:34,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:51:34,499 INFO L354 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 137 treesize of output 89 [2025-04-13 17:51:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:34,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:51:35,144 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:51:35,144 INFO L354 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 242 treesize of output 154 [2025-04-13 17:51:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:35,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882656507] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:51:35,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:51:35,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 27 [2025-04-13 17:51:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011917815] [2025-04-13 17:51:35,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:51:35,415 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:51:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:51:35,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:51:35,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:51:35,416 INFO L87 Difference]: Start difference. First operand 566 states and 2045 transitions. Second operand has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2025-04-13 17:51:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:51:38,369 INFO L93 Difference]: Finished difference Result 734 states and 2435 transitions. [2025-04-13 17:51:38,370 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 17:51:38,370 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) Word has length 20 [2025-04-13 17:51:38,370 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:51:38,372 INFO L225 Difference]: With dead ends: 734 [2025-04-13 17:51:38,372 INFO L226 Difference]: Without dead ends: 721 [2025-04-13 17:51:38,372 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=362, Invalid=2500, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 17:51:38,372 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:51:38,372 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:51:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2025-04-13 17:51:39,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 600. [2025-04-13 17:51:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 3.652754590984975) internal successors, (2188), 599 states have internal predecessors, (2188), 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) [2025-04-13 17:51:39,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 2188 transitions. [2025-04-13 17:51:39,078 INFO L79 Accepts]: Start accepts. Automaton has 600 states and 2188 transitions. Word has length 20 [2025-04-13 17:51:39,078 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:51:39,078 INFO L485 AbstractCegarLoop]: Abstraction has 600 states and 2188 transitions. [2025-04-13 17:51:39,078 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2025-04-13 17:51:39,078 INFO L278 IsEmpty]: Start isEmpty. Operand 600 states and 2188 transitions. [2025-04-13 17:51:39,079 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:51:39,079 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:51:39,079 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:51:39,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2025-04-13 17:51:39,280 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:39,280 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:51:39,280 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:51:39,280 INFO L85 PathProgramCache]: Analyzing trace with hash -917441120, now seen corresponding path program 64 times [2025-04-13 17:51:39,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:51:39,280 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761030165] [2025-04-13 17:51:39,280 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:51:39,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:51:39,286 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:51:39,292 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:39,292 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:51:39,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:51:39,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:51:39,650 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761030165] [2025-04-13 17:51:39,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761030165] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:51:39,650 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237682558] [2025-04-13 17:51:39,650 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:51:39,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:39,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:51:39,652 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:51:39,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2025-04-13 17:51:39,787 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:51:39,805 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:39,805 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:51:39,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:39,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 17:51:39,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:51:39,958 INFO L354 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 239 treesize of output 131 [2025-04-13 17:51:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:51:40,053 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:51:40,765 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:51:40,765 INFO L354 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 328 treesize of output 208 [2025-04-13 17:51:40,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:40,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237682558] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:51:40,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:51:40,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 27 [2025-04-13 17:51:40,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148428935] [2025-04-13 17:51:40,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:51:40,991 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:51:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:51:40,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:51:40,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:51:40,992 INFO L87 Difference]: Start difference. First operand 600 states and 2188 transitions. Second operand has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 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) [2025-04-13 17:51:44,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:51:44,797 INFO L93 Difference]: Finished difference Result 782 states and 2579 transitions. [2025-04-13 17:51:44,797 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 17:51:44,797 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 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) Word has length 20 [2025-04-13 17:51:44,797 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:51:44,799 INFO L225 Difference]: With dead ends: 782 [2025-04-13 17:51:44,799 INFO L226 Difference]: Without dead ends: 755 [2025-04-13 17:51:44,800 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=413, Invalid=2557, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 17:51:44,800 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 174 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:51:44,800 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 0 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:51:44,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2025-04-13 17:51:45,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 620. [2025-04-13 17:51:45,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 3.6704361873990305) internal successors, (2272), 619 states have internal predecessors, (2272), 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) [2025-04-13 17:51:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 2272 transitions. [2025-04-13 17:51:45,529 INFO L79 Accepts]: Start accepts. Automaton has 620 states and 2272 transitions. Word has length 20 [2025-04-13 17:51:45,529 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:51:45,529 INFO L485 AbstractCegarLoop]: Abstraction has 620 states and 2272 transitions. [2025-04-13 17:51:45,529 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 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) [2025-04-13 17:51:45,530 INFO L278 IsEmpty]: Start isEmpty. Operand 620 states and 2272 transitions. [2025-04-13 17:51:45,530 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:51:45,530 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:51:45,530 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:51:45,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2025-04-13 17:51:45,731 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:45,731 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:51:45,731 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:51:45,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1770004990, now seen corresponding path program 65 times [2025-04-13 17:51:45,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:51:45,731 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846707599] [2025-04-13 17:51:45,731 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:51:45,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:51:45,738 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:51:45,744 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:45,744 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:51:45,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:51:46,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:51:46,179 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846707599] [2025-04-13 17:51:46,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846707599] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:51:46,179 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880456991] [2025-04-13 17:51:46,179 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:51:46,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:46,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:51:46,181 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:51:46,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2025-04-13 17:51:46,317 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:51:46,338 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:46,339 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:51:46,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:46,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:51:46,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:51:46,479 INFO L354 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 136 treesize of output 76 [2025-04-13 17:51:46,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:46,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:51:47,045 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:51:47,045 INFO L354 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 242 treesize of output 154 [2025-04-13 17:51:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:47,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880456991] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:51:47,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:51:47,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2025-04-13 17:51:47,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813378126] [2025-04-13 17:51:47,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:51:47,363 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:51:47,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:51:47,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:51:47,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:51:47,364 INFO L87 Difference]: Start difference. First operand 620 states and 2272 transitions. Second operand has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) [2025-04-13 17:51:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:51:50,465 INFO L93 Difference]: Finished difference Result 782 states and 2664 transitions. [2025-04-13 17:51:50,465 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 17:51:50,465 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) Word has length 20 [2025-04-13 17:51:50,465 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:51:50,467 INFO L225 Difference]: With dead ends: 782 [2025-04-13 17:51:50,467 INFO L226 Difference]: Without dead ends: 773 [2025-04-13 17:51:50,468 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=269, Invalid=1987, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 17:51:50,468 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 114 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:51:50,468 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 0 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:51:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2025-04-13 17:51:51,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 646. [2025-04-13 17:51:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 3.7038759689922482) internal successors, (2389), 645 states have internal predecessors, (2389), 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) [2025-04-13 17:51:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 2389 transitions. [2025-04-13 17:51:51,227 INFO L79 Accepts]: Start accepts. Automaton has 646 states and 2389 transitions. Word has length 20 [2025-04-13 17:51:51,227 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:51:51,227 INFO L485 AbstractCegarLoop]: Abstraction has 646 states and 2389 transitions. [2025-04-13 17:51:51,227 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) [2025-04-13 17:51:51,227 INFO L278 IsEmpty]: Start isEmpty. Operand 646 states and 2389 transitions. [2025-04-13 17:51:51,228 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:51:51,228 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:51:51,228 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:51:51,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2025-04-13 17:51:51,429 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:51,429 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:51:51,429 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:51:51,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1659182470, now seen corresponding path program 66 times [2025-04-13 17:51:51,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:51:51,429 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104707178] [2025-04-13 17:51:51,429 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:51:51,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:51:51,436 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:51:51,446 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:51,447 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:51:51,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:51:51,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:51:51,916 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104707178] [2025-04-13 17:51:51,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104707178] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:51:51,916 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11504630] [2025-04-13 17:51:51,916 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:51:51,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:51,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:51:51,918 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:51:51,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2025-04-13 17:51:52,059 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:51:52,078 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:52,078 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:51:52,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:52,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:51:52,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:51:52,247 INFO L354 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 162 treesize of output 106 [2025-04-13 17:51:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:52,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:51:52,992 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:51:52,992 INFO L354 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 308 treesize of output 196 [2025-04-13 17:51:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:53,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11504630] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:51:53,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:51:53,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 30 [2025-04-13 17:51:53,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273776678] [2025-04-13 17:51:53,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:51:53,211 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 17:51:53,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:51:53,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 17:51:53,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:51:53,212 INFO L87 Difference]: Start difference. First operand 646 states and 2389 transitions. Second operand has 31 states, 30 states have (on average 1.7) internal successors, (51), 31 states have internal predecessors, (51), 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) [2025-04-13 17:51:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:51:57,083 INFO L93 Difference]: Finished difference Result 880 states and 2871 transitions. [2025-04-13 17:51:57,084 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 17:51:57,084 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.7) internal successors, (51), 31 states have internal predecessors, (51), 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) Word has length 20 [2025-04-13 17:51:57,084 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:51:57,086 INFO L225 Difference]: With dead ends: 880 [2025-04-13 17:51:57,086 INFO L226 Difference]: Without dead ends: 845 [2025-04-13 17:51:57,086 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=527, Invalid=3379, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 17:51:57,087 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:51:57,087 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:51:57,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2025-04-13 17:51:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 668. [2025-04-13 17:51:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 3.7241379310344827) internal successors, (2484), 667 states have internal predecessors, (2484), 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) [2025-04-13 17:51:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 2484 transitions. [2025-04-13 17:51:57,878 INFO L79 Accepts]: Start accepts. Automaton has 668 states and 2484 transitions. Word has length 20 [2025-04-13 17:51:57,878 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:51:57,878 INFO L485 AbstractCegarLoop]: Abstraction has 668 states and 2484 transitions. [2025-04-13 17:51:57,878 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.7) internal successors, (51), 31 states have internal predecessors, (51), 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) [2025-04-13 17:51:57,878 INFO L278 IsEmpty]: Start isEmpty. Operand 668 states and 2484 transitions. [2025-04-13 17:51:57,879 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:51:57,879 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:51:57,879 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:51:57,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2025-04-13 17:51:58,079 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2025-04-13 17:51:58,079 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:51:58,080 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:51:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1264080454, now seen corresponding path program 67 times [2025-04-13 17:51:58,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:51:58,080 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809384034] [2025-04-13 17:51:58,080 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:51:58,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:51:58,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:51:58,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:58,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:51:58,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:51:58,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:51:58,630 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809384034] [2025-04-13 17:51:58,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809384034] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:51:58,630 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880282815] [2025-04-13 17:51:58,630 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:51:58,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:51:58,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:51:58,632 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:51:58,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2025-04-13 17:51:58,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:51:58,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:51:58,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:51:58,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:51:58,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:51:58,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:51:58,968 INFO L354 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 169 treesize of output 91 [2025-04-13 17:51:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:59,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:51:59,584 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:51:59,584 INFO L354 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 342 treesize of output 206 [2025-04-13 17:51:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:51:59,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880282815] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:51:59,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:51:59,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2025-04-13 17:51:59,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36979250] [2025-04-13 17:51:59,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:51:59,794 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 17:51:59,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:51:59,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 17:51:59,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:51:59,795 INFO L87 Difference]: Start difference. First operand 668 states and 2484 transitions. Second operand has 30 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 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) [2025-04-13 17:52:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:52:03,631 INFO L93 Difference]: Finished difference Result 859 states and 2918 transitions. [2025-04-13 17:52:03,631 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 17:52:03,631 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 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) Word has length 20 [2025-04-13 17:52:03,631 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:52:03,634 INFO L225 Difference]: With dead ends: 859 [2025-04-13 17:52:03,634 INFO L226 Difference]: Without dead ends: 829 [2025-04-13 17:52:03,634 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=485, Invalid=3675, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 17:52:03,635 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 152 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:52:03,635 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 0 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:52:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2025-04-13 17:52:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 696. [2025-04-13 17:52:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 3.7179856115107914) internal successors, (2584), 695 states have internal predecessors, (2584), 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) [2025-04-13 17:52:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 2584 transitions. [2025-04-13 17:52:04,444 INFO L79 Accepts]: Start accepts. Automaton has 696 states and 2584 transitions. Word has length 20 [2025-04-13 17:52:04,444 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:52:04,444 INFO L485 AbstractCegarLoop]: Abstraction has 696 states and 2584 transitions. [2025-04-13 17:52:04,444 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 30 states have internal predecessors, (47), 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) [2025-04-13 17:52:04,444 INFO L278 IsEmpty]: Start isEmpty. Operand 696 states and 2584 transitions. [2025-04-13 17:52:04,445 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:52:04,445 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:52:04,445 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:52:04,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2025-04-13 17:52:04,646 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:04,646 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:52:04,646 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:52:04,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1316666374, now seen corresponding path program 68 times [2025-04-13 17:52:04,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:52:04,646 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275273727] [2025-04-13 17:52:04,646 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:52:04,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:52:04,653 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:52:04,660 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:04,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:52:04,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:52:05,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:52:05,184 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275273727] [2025-04-13 17:52:05,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275273727] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:52:05,184 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264205579] [2025-04-13 17:52:05,185 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:52:05,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:05,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:52:05,186 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:52:05,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2025-04-13 17:52:05,335 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:52:05,355 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:05,355 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:52:05,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:05,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 17:52:05,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:52:05,529 INFO L354 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 182 treesize of output 118 [2025-04-13 17:52:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:52:05,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:52:06,230 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:52:06,230 INFO L354 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 268 treesize of output 180 [2025-04-13 17:52:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:06,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264205579] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:52:06,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:52:06,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 28 [2025-04-13 17:52:06,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515436834] [2025-04-13 17:52:06,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:52:06,448 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 17:52:06,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:52:06,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 17:52:06,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2025-04-13 17:52:06,448 INFO L87 Difference]: Start difference. First operand 696 states and 2584 transitions. Second operand has 29 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 29 states have internal predecessors, (48), 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) [2025-04-13 17:52:11,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:52:11,019 INFO L93 Difference]: Finished difference Result 912 states and 3021 transitions. [2025-04-13 17:52:11,019 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-04-13 17:52:11,019 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 29 states have internal predecessors, (48), 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) Word has length 20 [2025-04-13 17:52:11,019 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:52:11,022 INFO L225 Difference]: With dead ends: 912 [2025-04-13 17:52:11,022 INFO L226 Difference]: Without dead ends: 877 [2025-04-13 17:52:11,022 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=588, Invalid=3444, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 17:52:11,022 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:52:11,022 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:52:11,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2025-04-13 17:52:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 704. [2025-04-13 17:52:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 3.724039829302987) internal successors, (2618), 703 states have internal predecessors, (2618), 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) [2025-04-13 17:52:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 2618 transitions. [2025-04-13 17:52:11,851 INFO L79 Accepts]: Start accepts. Automaton has 704 states and 2618 transitions. Word has length 20 [2025-04-13 17:52:11,851 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:52:11,851 INFO L485 AbstractCegarLoop]: Abstraction has 704 states and 2618 transitions. [2025-04-13 17:52:11,851 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 29 states have internal predecessors, (48), 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) [2025-04-13 17:52:11,851 INFO L278 IsEmpty]: Start isEmpty. Operand 704 states and 2618 transitions. [2025-04-13 17:52:11,852 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:52:11,852 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:52:11,852 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:52:11,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2025-04-13 17:52:12,053 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:12,053 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:52:12,053 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:52:12,053 INFO L85 PathProgramCache]: Analyzing trace with hash -290854812, now seen corresponding path program 69 times [2025-04-13 17:52:12,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:52:12,053 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989100092] [2025-04-13 17:52:12,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:52:12,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:52:12,060 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:52:12,070 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:12,070 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:52:12,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:12,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:52:12,398 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989100092] [2025-04-13 17:52:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989100092] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:52:12,398 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739122191] [2025-04-13 17:52:12,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:52:12,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:52:12,400 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:52:12,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2025-04-13 17:52:12,543 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:52:12,564 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:12,564 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:52:12,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:12,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:52:12,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:52:12,762 INFO L354 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 98 treesize of output 62 [2025-04-13 17:52:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:12,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:52:13,287 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:52:13,288 INFO L354 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 363 treesize of output 211 [2025-04-13 17:52:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:13,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739122191] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:52:13,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:52:13,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 26 [2025-04-13 17:52:13,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130847092] [2025-04-13 17:52:13,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:52:13,627 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 17:52:13,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:52:13,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 17:52:13,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:52:13,627 INFO L87 Difference]: Start difference. First operand 704 states and 2618 transitions. Second operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 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) [2025-04-13 17:52:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:52:16,991 INFO L93 Difference]: Finished difference Result 915 states and 3141 transitions. [2025-04-13 17:52:16,991 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 17:52:16,991 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 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) Word has length 20 [2025-04-13 17:52:16,991 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:52:16,994 INFO L225 Difference]: With dead ends: 915 [2025-04-13 17:52:16,994 INFO L226 Difference]: Without dead ends: 898 [2025-04-13 17:52:16,994 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=333, Invalid=2117, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 17:52:16,994 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:52:16,994 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:52:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2025-04-13 17:52:17,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 756. [2025-04-13 17:52:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 3.7721854304635762) internal successors, (2848), 755 states have internal predecessors, (2848), 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) [2025-04-13 17:52:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 2848 transitions. [2025-04-13 17:52:17,921 INFO L79 Accepts]: Start accepts. Automaton has 756 states and 2848 transitions. Word has length 20 [2025-04-13 17:52:17,921 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:52:17,921 INFO L485 AbstractCegarLoop]: Abstraction has 756 states and 2848 transitions. [2025-04-13 17:52:17,921 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 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) [2025-04-13 17:52:17,921 INFO L278 IsEmpty]: Start isEmpty. Operand 756 states and 2848 transitions. [2025-04-13 17:52:17,922 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:52:17,922 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:52:17,922 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:52:17,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2025-04-13 17:52:18,123 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2025-04-13 17:52:18,123 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:52:18,123 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:52:18,123 INFO L85 PathProgramCache]: Analyzing trace with hash -401677332, now seen corresponding path program 70 times [2025-04-13 17:52:18,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:52:18,123 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232138900] [2025-04-13 17:52:18,123 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:52:18,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:52:18,130 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:52:18,136 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:18,136 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:52:18,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:52:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:52:18,508 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232138900] [2025-04-13 17:52:18,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232138900] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:52:18,508 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988978228] [2025-04-13 17:52:18,508 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:52:18,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:18,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:52:18,509 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:52:18,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2025-04-13 17:52:18,654 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:52:18,673 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:18,673 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:52:18,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:18,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:52:18,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:52:18,788 INFO L354 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 136 treesize of output 76 [2025-04-13 17:52:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:52:18,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:52:19,421 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:52:19,421 INFO L354 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 314 treesize of output 202 [2025-04-13 17:52:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:19,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988978228] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:52:19,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:52:19,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 26 [2025-04-13 17:52:19,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735457977] [2025-04-13 17:52:19,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:52:19,739 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 17:52:19,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:52:19,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 17:52:19,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:52:19,739 INFO L87 Difference]: Start difference. First operand 756 states and 2848 transitions. Second operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 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) [2025-04-13 17:52:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:52:23,594 INFO L93 Difference]: Finished difference Result 942 states and 3222 transitions. [2025-04-13 17:52:23,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 17:52:23,594 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 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) Word has length 20 [2025-04-13 17:52:23,594 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:52:23,597 INFO L225 Difference]: With dead ends: 942 [2025-04-13 17:52:23,597 INFO L226 Difference]: Without dead ends: 925 [2025-04-13 17:52:23,597 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=306, Invalid=2144, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 17:52:23,597 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:52:23,597 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:52:23,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2025-04-13 17:52:24,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 764. [2025-04-13 17:52:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 3.779816513761468) internal successors, (2884), 763 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:52:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2884 transitions. [2025-04-13 17:52:24,492 INFO L79 Accepts]: Start accepts. Automaton has 764 states and 2884 transitions. Word has length 20 [2025-04-13 17:52:24,492 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:52:24,492 INFO L485 AbstractCegarLoop]: Abstraction has 764 states and 2884 transitions. [2025-04-13 17:52:24,492 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 27 states have internal predecessors, (44), 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) [2025-04-13 17:52:24,492 INFO L278 IsEmpty]: Start isEmpty. Operand 764 states and 2884 transitions. [2025-04-13 17:52:24,493 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:52:24,493 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:52:24,493 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:52:24,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2025-04-13 17:52:24,694 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:24,694 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:52:24,694 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:52:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1415595974, now seen corresponding path program 71 times [2025-04-13 17:52:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:52:24,694 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336848524] [2025-04-13 17:52:24,694 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:52:24,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:52:24,701 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:52:24,708 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:24,708 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:52:24,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:52:25,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:52:25,180 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336848524] [2025-04-13 17:52:25,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336848524] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:52:25,180 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99125308] [2025-04-13 17:52:25,180 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:52:25,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:25,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:52:25,181 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:52:25,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2025-04-13 17:52:25,330 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:52:25,351 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:25,351 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:52:25,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:25,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:52:25,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:52:25,531 INFO L354 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 116 treesize of output 62 [2025-04-13 17:52:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:25,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:52:26,160 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:52:26,161 INFO L354 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 371 treesize of output 213 [2025-04-13 17:52:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:26,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99125308] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:52:26,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:52:26,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2025-04-13 17:52:26,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514788745] [2025-04-13 17:52:26,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:52:26,380 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:52:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:52:26,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:52:26,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:52:26,381 INFO L87 Difference]: Start difference. First operand 764 states and 2884 transitions. Second operand has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) [2025-04-13 17:52:29,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:52:29,092 INFO L93 Difference]: Finished difference Result 845 states and 3054 transitions. [2025-04-13 17:52:29,092 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 17:52:29,092 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) Word has length 20 [2025-04-13 17:52:29,092 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:52:29,094 INFO L225 Difference]: With dead ends: 845 [2025-04-13 17:52:29,094 INFO L226 Difference]: Without dead ends: 832 [2025-04-13 17:52:29,095 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=217, Invalid=1853, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 17:52:29,095 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 93 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:52:29,095 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 0 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:52:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2025-04-13 17:52:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 770. [2025-04-13 17:52:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 3.7672301690507153) internal successors, (2897), 769 states have internal predecessors, (2897), 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) [2025-04-13 17:52:30,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2897 transitions. [2025-04-13 17:52:30,018 INFO L79 Accepts]: Start accepts. Automaton has 770 states and 2897 transitions. Word has length 20 [2025-04-13 17:52:30,018 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:52:30,018 INFO L485 AbstractCegarLoop]: Abstraction has 770 states and 2897 transitions. [2025-04-13 17:52:30,018 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) [2025-04-13 17:52:30,018 INFO L278 IsEmpty]: Start isEmpty. Operand 770 states and 2897 transitions. [2025-04-13 17:52:30,019 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:52:30,019 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:52:30,019 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:52:30,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2025-04-13 17:52:30,219 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:30,219 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:52:30,220 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:52:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2019902146, now seen corresponding path program 72 times [2025-04-13 17:52:30,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:52:30,220 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599059840] [2025-04-13 17:52:30,220 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:52:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:52:30,226 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:52:30,236 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:30,236 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:52:30,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:52:30,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:52:30,737 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599059840] [2025-04-13 17:52:30,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599059840] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:52:30,737 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263093201] [2025-04-13 17:52:30,737 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:52:30,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:30,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:52:30,739 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:52:30,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2025-04-13 17:52:30,887 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:52:30,906 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:30,906 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:52:30,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:30,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:52:30,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:52:31,083 INFO L354 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 137 treesize of output 89 [2025-04-13 17:52:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:31,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:52:31,812 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:52:31,812 INFO L354 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 248 treesize of output 156 [2025-04-13 17:52:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:32,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263093201] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:52:32,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:52:32,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 28 [2025-04-13 17:52:32,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109824035] [2025-04-13 17:52:32,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:52:32,071 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 17:52:32,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:52:32,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 17:52:32,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2025-04-13 17:52:32,071 INFO L87 Difference]: Start difference. First operand 770 states and 2897 transitions. Second operand has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 29 states have internal predecessors, (50), 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) [2025-04-13 17:52:35,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:52:35,578 INFO L93 Difference]: Finished difference Result 907 states and 3200 transitions. [2025-04-13 17:52:35,579 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 17:52:35,579 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 29 states have internal predecessors, (50), 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) Word has length 20 [2025-04-13 17:52:35,579 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:52:35,582 INFO L225 Difference]: With dead ends: 907 [2025-04-13 17:52:35,582 INFO L226 Difference]: Without dead ends: 898 [2025-04-13 17:52:35,582 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=333, Invalid=2529, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 17:52:35,582 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:52:35,582 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:52:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2025-04-13 17:52:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 782. [2025-04-13 17:52:36,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 3.7733674775928296) internal successors, (2947), 781 states have internal predecessors, (2947), 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) [2025-04-13 17:52:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 2947 transitions. [2025-04-13 17:52:36,532 INFO L79 Accepts]: Start accepts. Automaton has 782 states and 2947 transitions. Word has length 20 [2025-04-13 17:52:36,532 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:52:36,532 INFO L485 AbstractCegarLoop]: Abstraction has 782 states and 2947 transitions. [2025-04-13 17:52:36,532 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 29 states have internal predecessors, (50), 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) [2025-04-13 17:52:36,532 INFO L278 IsEmpty]: Start isEmpty. Operand 782 states and 2947 transitions. [2025-04-13 17:52:36,533 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:52:36,533 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:52:36,533 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:52:36,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2025-04-13 17:52:36,734 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:36,734 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:52:36,734 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:52:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2130724666, now seen corresponding path program 73 times [2025-04-13 17:52:36,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:52:36,734 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843614361] [2025-04-13 17:52:36,734 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:52:36,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:52:36,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:52:36,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:36,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:52:36,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:52:37,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:52:37,267 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843614361] [2025-04-13 17:52:37,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843614361] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:52:37,267 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162010451] [2025-04-13 17:52:37,267 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:52:37,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:37,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:52:37,269 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:52:37,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2025-04-13 17:52:37,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:52:37,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:37,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:52:37,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:37,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 17:52:37,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:52:37,626 INFO L354 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 214 treesize of output 118 [2025-04-13 17:52:37,712 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:37,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:52:38,460 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:52:38,460 INFO L354 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 332 treesize of output 210 [2025-04-13 17:52:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:38,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162010451] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:52:38,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:52:38,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2025-04-13 17:52:38,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586499167] [2025-04-13 17:52:38,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:52:38,709 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 17:52:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:52:38,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 17:52:38,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:52:38,709 INFO L87 Difference]: Start difference. First operand 782 states and 2947 transitions. Second operand has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 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) [2025-04-13 17:52:45,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:52:45,024 INFO L93 Difference]: Finished difference Result 1051 states and 3559 transitions. [2025-04-13 17:52:45,025 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-04-13 17:52:45,025 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 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) Word has length 20 [2025-04-13 17:52:45,025 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:52:45,028 INFO L225 Difference]: With dead ends: 1051 [2025-04-13 17:52:45,028 INFO L226 Difference]: Without dead ends: 1012 [2025-04-13 17:52:45,028 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=622, Invalid=4208, Unknown=0, NotChecked=0, Total=4830 [2025-04-13 17:52:45,028 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:52:45,029 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:52:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2025-04-13 17:52:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 826. [2025-04-13 17:52:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 3.8024242424242423) internal successors, (3137), 825 states have internal predecessors, (3137), 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) [2025-04-13 17:52:46,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 3137 transitions. [2025-04-13 17:52:46,023 INFO L79 Accepts]: Start accepts. Automaton has 826 states and 3137 transitions. Word has length 20 [2025-04-13 17:52:46,023 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:52:46,023 INFO L485 AbstractCegarLoop]: Abstraction has 826 states and 3137 transitions. [2025-04-13 17:52:46,023 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 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) [2025-04-13 17:52:46,023 INFO L278 IsEmpty]: Start isEmpty. Operand 826 states and 3137 transitions. [2025-04-13 17:52:46,024 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:52:46,024 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:52:46,024 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:52:46,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2025-04-13 17:52:46,225 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2025-04-13 17:52:46,225 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:52:46,225 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:52:46,225 INFO L85 PathProgramCache]: Analyzing trace with hash -882090306, now seen corresponding path program 74 times [2025-04-13 17:52:46,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:52:46,225 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11805266] [2025-04-13 17:52:46,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:52:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:52:46,232 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:52:46,240 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:46,240 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:52:46,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:52:46,560 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11805266] [2025-04-13 17:52:46,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11805266] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:52:46,560 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314058684] [2025-04-13 17:52:46,560 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:52:46,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:46,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:52:46,562 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:52:46,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2025-04-13 17:52:46,722 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:52:46,741 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:46,741 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:52:46,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:46,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 17:52:46,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:52:46,942 INFO L354 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 164 treesize of output 104 [2025-04-13 17:52:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:46,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:52:47,583 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:52:47,583 INFO L354 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 342 treesize of output 206 [2025-04-13 17:52:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:47,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314058684] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:52:47,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:52:47,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 27 [2025-04-13 17:52:47,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110287799] [2025-04-13 17:52:47,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:52:47,846 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:52:47,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:52:47,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:52:47,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:52:47,846 INFO L87 Difference]: Start difference. First operand 826 states and 3137 transitions. Second operand has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2025-04-13 17:52:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:52:51,978 INFO L93 Difference]: Finished difference Result 1286 states and 4715 transitions. [2025-04-13 17:52:51,978 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 17:52:51,978 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) Word has length 20 [2025-04-13 17:52:51,978 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:52:51,981 INFO L225 Difference]: With dead ends: 1286 [2025-04-13 17:52:51,981 INFO L226 Difference]: Without dead ends: 1256 [2025-04-13 17:52:51,981 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=368, Invalid=2602, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 17:52:51,982 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:52:51,982 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:52:51,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2025-04-13 17:52:53,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 848. [2025-04-13 17:52:53,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 3.8040141676505312) internal successors, (3222), 847 states have internal predecessors, (3222), 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) [2025-04-13 17:52:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 3222 transitions. [2025-04-13 17:52:53,021 INFO L79 Accepts]: Start accepts. Automaton has 848 states and 3222 transitions. Word has length 20 [2025-04-13 17:52:53,021 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:52:53,021 INFO L485 AbstractCegarLoop]: Abstraction has 848 states and 3222 transitions. [2025-04-13 17:52:53,022 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2025-04-13 17:52:53,022 INFO L278 IsEmpty]: Start isEmpty. Operand 848 states and 3222 transitions. [2025-04-13 17:52:53,023 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:52:53,023 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:52:53,023 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:52:53,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2025-04-13 17:52:53,223 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2025-04-13 17:52:53,223 INFO L403 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:52:53,224 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:52:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash -829504386, now seen corresponding path program 75 times [2025-04-13 17:52:53,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:52:53,224 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213966277] [2025-04-13 17:52:53,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:52:53,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:52:53,230 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:52:53,241 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:53,241 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:52:53,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:53,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:52:53,577 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213966277] [2025-04-13 17:52:53,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213966277] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:52:53,577 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326644478] [2025-04-13 17:52:53,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:52:53,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:52:53,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:52:53,579 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:52:53,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2025-04-13 17:52:53,738 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:52:53,758 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:52:53,758 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:52:53,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:52:53,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 17:52:53,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:52:53,914 INFO L354 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 182 treesize of output 118 [2025-04-13 17:52:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:54,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:52:54,673 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:52:54,673 INFO L354 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 304 treesize of output 200 [2025-04-13 17:52:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:52:54,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326644478] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:52:54,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:52:54,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 27 [2025-04-13 17:52:54,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425733143] [2025-04-13 17:52:54,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:52:54,880 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:52:54,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:52:54,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:52:54,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:52:54,880 INFO L87 Difference]: Start difference. First operand 848 states and 3222 transitions. Second operand has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2025-04-13 17:53:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:53:00,001 INFO L93 Difference]: Finished difference Result 1360 states and 4856 transitions. [2025-04-13 17:53:00,002 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 17:53:00,002 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) Word has length 20 [2025-04-13 17:53:00,002 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:53:00,006 INFO L225 Difference]: With dead ends: 1360 [2025-04-13 17:53:00,006 INFO L226 Difference]: Without dead ends: 1321 [2025-04-13 17:53:00,006 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=469, Invalid=3313, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 17:53:00,006 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 163 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:53:00,006 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 0 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:53:00,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2025-04-13 17:53:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 854. [2025-04-13 17:53:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 3.8042203985932006) internal successors, (3245), 853 states have internal predecessors, (3245), 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) [2025-04-13 17:53:01,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 3245 transitions. [2025-04-13 17:53:01,049 INFO L79 Accepts]: Start accepts. Automaton has 854 states and 3245 transitions. Word has length 20 [2025-04-13 17:53:01,049 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:53:01,049 INFO L485 AbstractCegarLoop]: Abstraction has 854 states and 3245 transitions. [2025-04-13 17:53:01,049 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2025-04-13 17:53:01,049 INFO L278 IsEmpty]: Start isEmpty. Operand 854 states and 3245 transitions. [2025-04-13 17:53:01,050 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:53:01,050 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:53:01,050 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:53:01,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2025-04-13 17:53:01,251 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2025-04-13 17:53:01,251 INFO L403 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:53:01,251 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:53:01,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1857941724, now seen corresponding path program 76 times [2025-04-13 17:53:01,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:53:01,251 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619328205] [2025-04-13 17:53:01,251 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:53:01,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:53:01,259 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:53:01,265 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:53:01,265 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:53:01,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:53:01,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:53:01,619 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619328205] [2025-04-13 17:53:01,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619328205] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:53:01,619 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940565943] [2025-04-13 17:53:01,620 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:53:01,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:01,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:53:01,621 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:53:01,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2025-04-13 17:53:01,778 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:53:01,798 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:53:01,798 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:53:01,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:01,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 17:53:01,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:53:01,939 INFO L354 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 194 treesize of output 104 [2025-04-13 17:53:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:53:01,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:53:02,584 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:53:02,584 INFO L354 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 312 treesize of output 192 [2025-04-13 17:53:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940565943] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:53:02,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:53:02,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 25 [2025-04-13 17:53:02,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126448620] [2025-04-13 17:53:02,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:53:02,759 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:53:02,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:53:02,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:53:02,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:53:02,760 INFO L87 Difference]: Start difference. First operand 854 states and 3245 transitions. Second operand has 26 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 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) [2025-04-13 17:53:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:53:07,343 INFO L93 Difference]: Finished difference Result 1394 states and 5029 transitions. [2025-04-13 17:53:07,343 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 17:53:07,343 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 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) Word has length 20 [2025-04-13 17:53:07,343 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:53:07,346 INFO L225 Difference]: With dead ends: 1394 [2025-04-13 17:53:07,346 INFO L226 Difference]: Without dead ends: 1334 [2025-04-13 17:53:07,346 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=369, Invalid=2601, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 17:53:07,346 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 141 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:53:07,347 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 0 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:53:07,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2025-04-13 17:53:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 872. [2025-04-13 17:53:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 3.807118254879449) internal successors, (3316), 871 states have internal predecessors, (3316), 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) [2025-04-13 17:53:08,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 3316 transitions. [2025-04-13 17:53:08,402 INFO L79 Accepts]: Start accepts. Automaton has 872 states and 3316 transitions. Word has length 20 [2025-04-13 17:53:08,402 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:53:08,402 INFO L485 AbstractCegarLoop]: Abstraction has 872 states and 3316 transitions. [2025-04-13 17:53:08,402 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 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) [2025-04-13 17:53:08,402 INFO L278 IsEmpty]: Start isEmpty. Operand 872 states and 3316 transitions. [2025-04-13 17:53:08,403 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:53:08,403 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:53:08,403 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:53:08,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2025-04-13 17:53:08,603 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2025-04-13 17:53:08,604 INFO L403 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:53:08,604 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:53:08,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1747119204, now seen corresponding path program 77 times [2025-04-13 17:53:08,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:53:08,604 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898602366] [2025-04-13 17:53:08,604 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:53:08,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:53:08,611 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:53:08,618 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:53:08,618 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:53:08,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:53:09,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:53:09,058 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898602366] [2025-04-13 17:53:09,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898602366] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:53:09,058 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781560040] [2025-04-13 17:53:09,059 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:53:09,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:09,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:53:09,060 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:53:09,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2025-04-13 17:53:09,215 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:53:09,237 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:53:09,237 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:53:09,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:09,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-13 17:53:09,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:53:09,382 INFO L354 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 214 treesize of output 118 [2025-04-13 17:53:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:09,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:53:10,105 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:53:10,105 INFO L354 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 268 treesize of output 180 [2025-04-13 17:53:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:10,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781560040] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:53:10,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:53:10,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2025-04-13 17:53:10,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806902613] [2025-04-13 17:53:10,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:53:10,287 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:53:10,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:53:10,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:53:10,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:53:10,288 INFO L87 Difference]: Start difference. First operand 872 states and 3316 transitions. Second operand has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) [2025-04-13 17:53:16,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:53:16,948 INFO L93 Difference]: Finished difference Result 1430 states and 5008 transitions. [2025-04-13 17:53:16,948 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-04-13 17:53:16,948 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) Word has length 20 [2025-04-13 17:53:16,948 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:53:16,951 INFO L225 Difference]: With dead ends: 1430 [2025-04-13 17:53:16,951 INFO L226 Difference]: Without dead ends: 1372 [2025-04-13 17:53:16,952 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=632, Invalid=3790, Unknown=0, NotChecked=0, Total=4422 [2025-04-13 17:53:16,952 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 184 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:53:16,952 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 0 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:53:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2025-04-13 17:53:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 880. [2025-04-13 17:53:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 3.8043230944254836) internal successors, (3344), 879 states have internal predecessors, (3344), 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) [2025-04-13 17:53:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 3344 transitions. [2025-04-13 17:53:18,026 INFO L79 Accepts]: Start accepts. Automaton has 880 states and 3344 transitions. Word has length 20 [2025-04-13 17:53:18,026 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:53:18,026 INFO L485 AbstractCegarLoop]: Abstraction has 880 states and 3344 transitions. [2025-04-13 17:53:18,026 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 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) [2025-04-13 17:53:18,026 INFO L278 IsEmpty]: Start isEmpty. Operand 880 states and 3344 transitions. [2025-04-13 17:53:18,027 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:53:18,027 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:53:18,027 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:53:18,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2025-04-13 17:53:18,227 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:18,228 INFO L403 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:53:18,228 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:53:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash -730574786, now seen corresponding path program 78 times [2025-04-13 17:53:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:53:18,228 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573868150] [2025-04-13 17:53:18,228 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:53:18,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:53:18,235 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:53:18,244 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:53:18,244 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:53:18,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:53:18,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:53:18,781 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573868150] [2025-04-13 17:53:18,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573868150] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:53:18,781 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400333823] [2025-04-13 17:53:18,781 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:53:18,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:18,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:53:18,783 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:53:18,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2025-04-13 17:53:18,941 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:53:18,960 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:53:18,961 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:53:18,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:18,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-04-13 17:53:18,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:53:19,112 INFO L354 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 117 treesize of output 77 [2025-04-13 17:53:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:19,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:53:19,898 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:53:19,899 INFO L354 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 248 treesize of output 156 [2025-04-13 17:53:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:20,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400333823] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:53:20,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:53:20,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 28 [2025-04-13 17:53:20,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188548580] [2025-04-13 17:53:20,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:53:20,120 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 17:53:20,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:53:20,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 17:53:20,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2025-04-13 17:53:20,121 INFO L87 Difference]: Start difference. First operand 880 states and 3344 transitions. Second operand has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 29 states have internal predecessors, (50), 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) [2025-04-13 17:53:24,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:53:24,612 INFO L93 Difference]: Finished difference Result 1297 states and 4832 transitions. [2025-04-13 17:53:24,612 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 17:53:24,612 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 29 states have internal predecessors, (50), 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) Word has length 20 [2025-04-13 17:53:24,612 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:53:24,615 INFO L225 Difference]: With dead ends: 1297 [2025-04-13 17:53:24,615 INFO L226 Difference]: Without dead ends: 1284 [2025-04-13 17:53:24,615 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=351, Invalid=2955, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 17:53:24,616 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:53:24,616 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 0 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 17:53:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2025-04-13 17:53:25,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 890. [2025-04-13 17:53:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 3.8031496062992125) internal successors, (3381), 889 states have internal predecessors, (3381), 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) [2025-04-13 17:53:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 3381 transitions. [2025-04-13 17:53:25,719 INFO L79 Accepts]: Start accepts. Automaton has 890 states and 3381 transitions. Word has length 20 [2025-04-13 17:53:25,719 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:53:25,719 INFO L485 AbstractCegarLoop]: Abstraction has 890 states and 3381 transitions. [2025-04-13 17:53:25,719 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 29 states have internal predecessors, (50), 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) [2025-04-13 17:53:25,719 INFO L278 IsEmpty]: Start isEmpty. Operand 890 states and 3381 transitions. [2025-04-13 17:53:25,720 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:53:25,721 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:53:25,721 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:53:25,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2025-04-13 17:53:25,921 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:25,921 INFO L403 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:53:25,921 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:53:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash 128894390, now seen corresponding path program 79 times [2025-04-13 17:53:25,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:53:25,921 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317573189] [2025-04-13 17:53:25,921 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:53:25,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:53:25,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:53:25,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:53:25,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:53:25,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:53:26,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:53:26,485 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317573189] [2025-04-13 17:53:26,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317573189] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:53:26,485 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793321250] [2025-04-13 17:53:26,485 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:53:26,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:26,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:53:26,487 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:53:26,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2025-04-13 17:53:26,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:53:26,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:53:26,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:53:26,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:26,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:53:26,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:53:26,867 INFO L354 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 194 treesize of output 104 [2025-04-13 17:53:26,909 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:26,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:53:27,596 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:53:27,597 INFO L354 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 348 treesize of output 208 [2025-04-13 17:53:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:27,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793321250] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:53:27,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:53:27,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2025-04-13 17:53:27,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446987054] [2025-04-13 17:53:27,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:53:27,807 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 17:53:27,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:53:27,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 17:53:27,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:53:27,807 INFO L87 Difference]: Start difference. First operand 890 states and 3381 transitions. Second operand has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 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) [2025-04-13 17:53:32,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:53:32,977 INFO L93 Difference]: Finished difference Result 1328 states and 4874 transitions. [2025-04-13 17:53:32,977 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 17:53:32,978 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 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) Word has length 20 [2025-04-13 17:53:32,978 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:53:32,981 INFO L225 Difference]: With dead ends: 1328 [2025-04-13 17:53:32,981 INFO L226 Difference]: Without dead ends: 1305 [2025-04-13 17:53:32,981 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=408, Invalid=3624, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 17:53:32,981 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 131 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:53:32,981 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 0 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 17:53:32,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2025-04-13 17:53:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 894. [2025-04-13 17:53:34,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 3.801791713325868) internal successors, (3395), 893 states have internal predecessors, (3395), 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) [2025-04-13 17:53:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 3395 transitions. [2025-04-13 17:53:34,091 INFO L79 Accepts]: Start accepts. Automaton has 894 states and 3395 transitions. Word has length 20 [2025-04-13 17:53:34,091 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:53:34,091 INFO L485 AbstractCegarLoop]: Abstraction has 894 states and 3395 transitions. [2025-04-13 17:53:34,091 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 30 states have internal predecessors, (46), 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) [2025-04-13 17:53:34,091 INFO L278 IsEmpty]: Start isEmpty. Operand 894 states and 3395 transitions. [2025-04-13 17:53:34,092 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:53:34,092 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:53:34,092 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:53:34,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2025-04-13 17:53:34,293 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:34,293 INFO L403 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:53:34,293 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:53:34,293 INFO L85 PathProgramCache]: Analyzing trace with hash 18071870, now seen corresponding path program 80 times [2025-04-13 17:53:34,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:53:34,293 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930384351] [2025-04-13 17:53:34,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:53:34,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:53:34,300 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:53:34,308 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:53:34,308 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:53:34,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:53:34,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:53:34,725 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930384351] [2025-04-13 17:53:34,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930384351] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:53:34,725 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438364277] [2025-04-13 17:53:34,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:53:34,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:34,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:53:34,727 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:53:34,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2025-04-13 17:53:34,887 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-04-13 17:53:34,906 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:53:34,906 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:53:34,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:34,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 17:53:34,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:53:35,082 INFO L354 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 203 treesize of output 131 [2025-04-13 17:53:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:53:35,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:53:35,997 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:53:35,998 INFO L354 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 325 treesize of output 201 [2025-04-13 17:53:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:36,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438364277] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:53:36,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:53:36,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 27 [2025-04-13 17:53:36,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422258916] [2025-04-13 17:53:36,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:53:36,167 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:53:36,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:53:36,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:53:36,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:53:36,168 INFO L87 Difference]: Start difference. First operand 894 states and 3395 transitions. Second operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 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) [2025-04-13 17:53:42,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:53:42,532 INFO L93 Difference]: Finished difference Result 1374 states and 4947 transitions. [2025-04-13 17:53:42,532 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-04-13 17:53:42,532 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 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) Word has length 20 [2025-04-13 17:53:42,532 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:53:42,535 INFO L225 Difference]: With dead ends: 1374 [2025-04-13 17:53:42,535 INFO L226 Difference]: Without dead ends: 1331 [2025-04-13 17:53:42,535 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=476, Invalid=3556, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 17:53:42,536 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 177 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:53:42,536 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 0 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:53:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2025-04-13 17:53:43,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 894. [2025-04-13 17:53:43,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 3.801791713325868) internal successors, (3395), 893 states have internal predecessors, (3395), 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) [2025-04-13 17:53:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 3395 transitions. [2025-04-13 17:53:43,641 INFO L79 Accepts]: Start accepts. Automaton has 894 states and 3395 transitions. Word has length 20 [2025-04-13 17:53:43,641 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:53:43,641 INFO L485 AbstractCegarLoop]: Abstraction has 894 states and 3395 transitions. [2025-04-13 17:53:43,641 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 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) [2025-04-13 17:53:43,641 INFO L278 IsEmpty]: Start isEmpty. Operand 894 states and 3395 transitions. [2025-04-13 17:53:43,643 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:53:43,643 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:53:43,643 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:53:43,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2025-04-13 17:53:43,843 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:43,843 INFO L403 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:53:43,843 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:53:43,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2065166116, now seen corresponding path program 81 times [2025-04-13 17:53:43,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:53:43,844 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486927594] [2025-04-13 17:53:43,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:53:43,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:53:43,850 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:53:43,857 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 20 statements. [2025-04-13 17:53:43,857 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:53:43,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:44,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:53:44,191 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486927594] [2025-04-13 17:53:44,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486927594] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:53:44,191 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358299733] [2025-04-13 17:53:44,191 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:53:44,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:44,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:53:44,192 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:53:44,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2025-04-13 17:53:44,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-04-13 17:53:44,372 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 20 statements. [2025-04-13 17:53:44,372 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:53:44,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:44,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 17:53:44,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:53:44,577 INFO L354 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 123 treesize of output 79 [2025-04-13 17:53:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:44,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:53:45,188 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:53:45,188 INFO L354 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 248 treesize of output 146 [2025-04-13 17:53:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:45,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358299733] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:53:45,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:53:45,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 27 [2025-04-13 17:53:45,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491496220] [2025-04-13 17:53:45,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:53:45,285 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:53:45,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:53:45,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:53:45,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:53:45,285 INFO L87 Difference]: Start difference. First operand 894 states and 3395 transitions. Second operand has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2025-04-13 17:53:50,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:53:50,198 INFO L93 Difference]: Finished difference Result 1282 states and 4816 transitions. [2025-04-13 17:53:50,198 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 17:53:50,198 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) Word has length 20 [2025-04-13 17:53:50,198 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:53:50,201 INFO L225 Difference]: With dead ends: 1282 [2025-04-13 17:53:50,201 INFO L226 Difference]: Without dead ends: 1255 [2025-04-13 17:53:50,202 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=422, Invalid=2548, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 17:53:50,202 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:53:50,202 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:53:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2025-04-13 17:53:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 902. [2025-04-13 17:53:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 3.8013318534961154) internal successors, (3425), 901 states have internal predecessors, (3425), 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) [2025-04-13 17:53:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 3425 transitions. [2025-04-13 17:53:51,356 INFO L79 Accepts]: Start accepts. Automaton has 902 states and 3425 transitions. Word has length 20 [2025-04-13 17:53:51,356 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:53:51,356 INFO L485 AbstractCegarLoop]: Abstraction has 902 states and 3425 transitions. [2025-04-13 17:53:51,356 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 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) [2025-04-13 17:53:51,356 INFO L278 IsEmpty]: Start isEmpty. Operand 902 states and 3425 transitions. [2025-04-13 17:53:51,357 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:53:51,358 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:53:51,358 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:53:51,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2025-04-13 17:53:51,558 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:51,558 INFO L403 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:53:51,558 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:53:51,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1000561630, now seen corresponding path program 82 times [2025-04-13 17:53:51,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:53:51,558 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107371051] [2025-04-13 17:53:51,558 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:53:51,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:53:51,565 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:53:51,572 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:53:51,572 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:53:51,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:51,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:53:51,779 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107371051] [2025-04-13 17:53:51,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107371051] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:53:51,779 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632609583] [2025-04-13 17:53:51,779 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:53:51,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:51,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:53:51,780 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:53:51,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2025-04-13 17:53:51,942 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:53:51,961 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:53:51,961 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:53:51,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:51,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 17:53:51,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:53:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:52,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:53:52,121 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:53:52,121 INFO L354 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 44 treesize of output 19 [2025-04-13 17:53:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:52,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632609583] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:53:52,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:53:52,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 17:53:52,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124082091] [2025-04-13 17:53:52,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:53:52,140 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:53:52,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:53:52,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:53:52,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:53:52,141 INFO L87 Difference]: Start difference. First operand 902 states and 3425 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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) [2025-04-13 17:53:56,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:53:56,124 INFO L93 Difference]: Finished difference Result 1485 states and 5527 transitions. [2025-04-13 17:53:56,124 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 17:53:56,124 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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) Word has length 21 [2025-04-13 17:53:56,124 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:53:56,128 INFO L225 Difference]: With dead ends: 1485 [2025-04-13 17:53:56,128 INFO L226 Difference]: Without dead ends: 1474 [2025-04-13 17:53:56,128 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1392, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 17:53:56,128 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 145 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:53:56,128 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 0 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:53:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2025-04-13 17:53:57,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 917. [2025-04-13 17:53:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 3.819868995633188) internal successors, (3499), 916 states have internal predecessors, (3499), 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) [2025-04-13 17:53:57,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 3499 transitions. [2025-04-13 17:53:57,403 INFO L79 Accepts]: Start accepts. Automaton has 917 states and 3499 transitions. Word has length 21 [2025-04-13 17:53:57,403 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:53:57,403 INFO L485 AbstractCegarLoop]: Abstraction has 917 states and 3499 transitions. [2025-04-13 17:53:57,404 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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) [2025-04-13 17:53:57,404 INFO L278 IsEmpty]: Start isEmpty. Operand 917 states and 3499 transitions. [2025-04-13 17:53:57,405 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:53:57,405 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:53:57,405 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:53:57,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2025-04-13 17:53:57,605 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2025-04-13 17:53:57,605 INFO L403 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:53:57,606 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:53:57,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2140077573, now seen corresponding path program 83 times [2025-04-13 17:53:57,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:53:57,606 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626813259] [2025-04-13 17:53:57,606 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:53:57,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:53:57,613 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:53:57,620 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:53:57,620 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:53:57,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:57,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:53:57,776 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626813259] [2025-04-13 17:53:57,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626813259] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:53:57,776 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522360963] [2025-04-13 17:53:57,776 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:53:57,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:53:57,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:53:57,778 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:53:57,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2025-04-13 17:53:57,943 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:53:57,964 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:53:57,964 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:53:57,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:53:57,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-04-13 17:53:57,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:53:58,114 INFO L354 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 61 treesize of output 37 [2025-04-13 17:53:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:53:58,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:53:58,197 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:53:58,197 INFO L354 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 113 treesize of output 56 [2025-04-13 17:53:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:53:58,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522360963] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:53:58,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:53:58,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 23 [2025-04-13 17:53:58,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498489059] [2025-04-13 17:53:58,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:53:58,226 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:53:58,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:53:58,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:53:58,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:53:58,226 INFO L87 Difference]: Start difference. First operand 917 states and 3499 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) [2025-04-13 17:54:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:01,396 INFO L93 Difference]: Finished difference Result 1280 states and 4842 transitions. [2025-04-13 17:54:01,396 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 17:54:01,396 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:54:01,396 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:01,399 INFO L225 Difference]: With dead ends: 1280 [2025-04-13 17:54:01,399 INFO L226 Difference]: Without dead ends: 1252 [2025-04-13 17:54:01,400 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 17:54:01,400 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:01,400 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:54:01,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2025-04-13 17:54:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 917. [2025-04-13 17:54:02,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 3.811135371179039) internal successors, (3491), 916 states have internal predecessors, (3491), 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) [2025-04-13 17:54:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 3491 transitions. [2025-04-13 17:54:02,632 INFO L79 Accepts]: Start accepts. Automaton has 917 states and 3491 transitions. Word has length 21 [2025-04-13 17:54:02,632 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:02,632 INFO L485 AbstractCegarLoop]: Abstraction has 917 states and 3491 transitions. [2025-04-13 17:54:02,632 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) [2025-04-13 17:54:02,632 INFO L278 IsEmpty]: Start isEmpty. Operand 917 states and 3491 transitions. [2025-04-13 17:54:02,634 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:02,634 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:02,634 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:02,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2025-04-13 17:54:02,834 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2025-04-13 17:54:02,834 INFO L403 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:02,835 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:02,835 INFO L85 PathProgramCache]: Analyzing trace with hash -17558412, now seen corresponding path program 84 times [2025-04-13 17:54:02,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:02,835 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740915108] [2025-04-13 17:54:02,835 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:54:02,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:02,843 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:02,854 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:02,854 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:54:02,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:54:03,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:03,203 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740915108] [2025-04-13 17:54:03,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740915108] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:03,204 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869693204] [2025-04-13 17:54:03,204 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:54:03,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:03,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:03,205 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:03,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2025-04-13 17:54:03,389 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:03,414 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:03,414 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:54:03,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:03,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:54:03,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:03,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:03,679 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:54:03,680 INFO L354 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 44 treesize of output 19 [2025-04-13 17:54:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:03,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869693204] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:03,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:03,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 23 [2025-04-13 17:54:03,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780352706] [2025-04-13 17:54:03,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:03,702 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:54:03,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:03,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:54:03,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:54:03,702 INFO L87 Difference]: Start difference. First operand 917 states and 3491 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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) [2025-04-13 17:54:07,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:07,859 INFO L93 Difference]: Finished difference Result 1405 states and 5150 transitions. [2025-04-13 17:54:07,859 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 17:54:07,859 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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) Word has length 21 [2025-04-13 17:54:07,859 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:07,862 INFO L225 Difference]: With dead ends: 1405 [2025-04-13 17:54:07,863 INFO L226 Difference]: Without dead ends: 1398 [2025-04-13 17:54:07,863 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=1907, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 17:54:07,863 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:07,863 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:54:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2025-04-13 17:54:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 917. [2025-04-13 17:54:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 3.811135371179039) internal successors, (3491), 916 states have internal predecessors, (3491), 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) [2025-04-13 17:54:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 3491 transitions. [2025-04-13 17:54:09,113 INFO L79 Accepts]: Start accepts. Automaton has 917 states and 3491 transitions. Word has length 21 [2025-04-13 17:54:09,113 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:09,113 INFO L485 AbstractCegarLoop]: Abstraction has 917 states and 3491 transitions. [2025-04-13 17:54:09,113 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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) [2025-04-13 17:54:09,113 INFO L278 IsEmpty]: Start isEmpty. Operand 917 states and 3491 transitions. [2025-04-13 17:54:09,114 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:09,114 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:09,114 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:09,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2025-04-13 17:54:09,315 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:09,315 INFO L403 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:09,315 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:09,315 INFO L85 PathProgramCache]: Analyzing trace with hash 63571873, now seen corresponding path program 85 times [2025-04-13 17:54:09,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:09,315 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502589906] [2025-04-13 17:54:09,315 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:54:09,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:09,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:54:09,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:09,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:54:09,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:54:09,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:09,620 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502589906] [2025-04-13 17:54:09,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502589906] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:09,620 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590786185] [2025-04-13 17:54:09,620 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:54:09,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:09,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:09,622 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:09,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2025-04-13 17:54:09,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:54:09,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:09,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:54:09,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:09,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:54:09,816 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:09,955 INFO L354 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 98 treesize of output 50 [2025-04-13 17:54:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:09,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:10,071 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:54:10,071 INFO L354 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 83 treesize of output 42 [2025-04-13 17:54:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:10,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590786185] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:10,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:10,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2025-04-13 17:54:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292595287] [2025-04-13 17:54:10,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:10,100 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 17:54:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:10,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 17:54:10,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:54:10,100 INFO L87 Difference]: Start difference. First operand 917 states and 3491 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 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) [2025-04-13 17:54:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:13,231 INFO L93 Difference]: Finished difference Result 1277 states and 4834 transitions. [2025-04-13 17:54:13,231 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 17:54:13,231 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 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) Word has length 21 [2025-04-13 17:54:13,231 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:13,234 INFO L225 Difference]: With dead ends: 1277 [2025-04-13 17:54:13,234 INFO L226 Difference]: Without dead ends: 1254 [2025-04-13 17:54:13,235 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 17:54:13,235 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:13,235 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:54:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2025-04-13 17:54:14,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 919. [2025-04-13 17:54:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 918 states have (on average 3.8061002178649237) internal successors, (3494), 918 states have internal predecessors, (3494), 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) [2025-04-13 17:54:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 3494 transitions. [2025-04-13 17:54:14,485 INFO L79 Accepts]: Start accepts. Automaton has 919 states and 3494 transitions. Word has length 21 [2025-04-13 17:54:14,485 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:14,485 INFO L485 AbstractCegarLoop]: Abstraction has 919 states and 3494 transitions. [2025-04-13 17:54:14,485 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 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) [2025-04-13 17:54:14,485 INFO L278 IsEmpty]: Start isEmpty. Operand 919 states and 3494 transitions. [2025-04-13 17:54:14,486 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:14,486 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:14,486 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:14,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2025-04-13 17:54:14,687 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:14,687 INFO L403 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:14,687 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash -195090466, now seen corresponding path program 86 times [2025-04-13 17:54:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:14,687 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582039954] [2025-04-13 17:54:14,687 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:54:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:14,699 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:54:14,707 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:14,707 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:54:14,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:14,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:14,912 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582039954] [2025-04-13 17:54:14,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582039954] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:14,912 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113247913] [2025-04-13 17:54:14,912 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:54:14,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:14,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:14,914 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:14,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2025-04-13 17:54:15,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:54:15,107 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:15,107 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:54:15,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:15,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:54:15,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:15,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:15,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:15,413 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:54:15,413 INFO L354 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 44 treesize of output 19 [2025-04-13 17:54:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:15,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113247913] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:15,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:15,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2025-04-13 17:54:15,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184204092] [2025-04-13 17:54:15,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:15,437 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 17:54:15,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:15,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 17:54:15,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:54:15,437 INFO L87 Difference]: Start difference. First operand 919 states and 3494 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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) [2025-04-13 17:54:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:18,351 INFO L93 Difference]: Finished difference Result 1390 states and 5071 transitions. [2025-04-13 17:54:18,351 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 17:54:18,351 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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) Word has length 21 [2025-04-13 17:54:18,351 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:18,354 INFO L225 Difference]: With dead ends: 1390 [2025-04-13 17:54:18,354 INFO L226 Difference]: Without dead ends: 896 [2025-04-13 17:54:18,354 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=258, Invalid=1464, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 17:54:18,354 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 208 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:18,354 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 0 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:54:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2025-04-13 17:54:19,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 439. [2025-04-13 17:54:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 3.093607305936073) internal successors, (1355), 438 states have internal predecessors, (1355), 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) [2025-04-13 17:54:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1355 transitions. [2025-04-13 17:54:19,090 INFO L79 Accepts]: Start accepts. Automaton has 439 states and 1355 transitions. Word has length 21 [2025-04-13 17:54:19,090 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:19,090 INFO L485 AbstractCegarLoop]: Abstraction has 439 states and 1355 transitions. [2025-04-13 17:54:19,090 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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) [2025-04-13 17:54:19,090 INFO L278 IsEmpty]: Start isEmpty. Operand 439 states and 1355 transitions. [2025-04-13 17:54:19,091 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:19,091 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:19,091 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:19,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2025-04-13 17:54:19,291 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:19,291 INFO L403 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:19,292 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash 915905297, now seen corresponding path program 87 times [2025-04-13 17:54:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:19,292 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285170964] [2025-04-13 17:54:19,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:54:19,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:19,299 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:19,305 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 21 statements. [2025-04-13 17:54:19,305 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:54:19,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:19,509 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285170964] [2025-04-13 17:54:19,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285170964] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:19,509 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705509528] [2025-04-13 17:54:19,509 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:54:19,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:19,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:19,511 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:19,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2025-04-13 17:54:19,680 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:19,703 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 21 statements. [2025-04-13 17:54:19,703 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:54:19,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:19,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:54:19,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:19,898 INFO L354 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 61 treesize of output 37 [2025-04-13 17:54:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:19,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:20,012 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:54:20,013 INFO L354 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 83 treesize of output 42 [2025-04-13 17:54:20,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:20,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705509528] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:20,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:20,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 24 [2025-04-13 17:54:20,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464578604] [2025-04-13 17:54:20,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:20,039 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 17:54:20,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:20,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 17:54:20,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:54:20,039 INFO L87 Difference]: Start difference. First operand 439 states and 1355 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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) [2025-04-13 17:54:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:22,362 INFO L93 Difference]: Finished difference Result 568 states and 1603 transitions. [2025-04-13 17:54:22,362 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 17:54:22,362 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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) Word has length 21 [2025-04-13 17:54:22,362 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:22,363 INFO L225 Difference]: With dead ends: 568 [2025-04-13 17:54:22,363 INFO L226 Difference]: Without dead ends: 534 [2025-04-13 17:54:22,364 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=254, Invalid=1468, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 17:54:22,364 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:22,364 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:54:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-04-13 17:54:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 447. [2025-04-13 17:54:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.0739910313901344) internal successors, (1371), 446 states have internal predecessors, (1371), 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) [2025-04-13 17:54:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1371 transitions. [2025-04-13 17:54:23,161 INFO L79 Accepts]: Start accepts. Automaton has 447 states and 1371 transitions. Word has length 21 [2025-04-13 17:54:23,161 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:23,161 INFO L485 AbstractCegarLoop]: Abstraction has 447 states and 1371 transitions. [2025-04-13 17:54:23,161 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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) [2025-04-13 17:54:23,161 INFO L278 IsEmpty]: Start isEmpty. Operand 447 states and 1371 transitions. [2025-04-13 17:54:23,161 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:23,161 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:23,161 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:23,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2025-04-13 17:54:23,362 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:23,362 INFO L403 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:23,362 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:23,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1750025732, now seen corresponding path program 88 times [2025-04-13 17:54:23,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:23,362 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661462016] [2025-04-13 17:54:23,362 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:54:23,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:23,369 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:54:23,378 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:23,378 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:54:23,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:54:23,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:23,687 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661462016] [2025-04-13 17:54:23,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661462016] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:23,687 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377214037] [2025-04-13 17:54:23,687 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:54:23,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:23,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:23,689 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:23,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2025-04-13 17:54:23,861 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:54:23,879 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:23,879 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:54:23,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:23,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:54:23,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:24,014 INFO L354 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 107 treesize of output 59 [2025-04-13 17:54:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:54:24,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:24,164 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:54:24,164 INFO L354 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 44 treesize of output 19 [2025-04-13 17:54:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:24,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377214037] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:24,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:24,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 28 [2025-04-13 17:54:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648715445] [2025-04-13 17:54:24,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:24,190 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:54:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:24,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:54:24,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:54:24,191 INFO L87 Difference]: Start difference. First operand 447 states and 1371 transitions. Second operand has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 28 states have internal predecessors, (48), 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) [2025-04-13 17:54:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:26,758 INFO L93 Difference]: Finished difference Result 558 states and 1541 transitions. [2025-04-13 17:54:26,758 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 17:54:26,758 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 28 states have internal predecessors, (48), 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) Word has length 21 [2025-04-13 17:54:26,758 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:26,760 INFO L225 Difference]: With dead ends: 558 [2025-04-13 17:54:26,760 INFO L226 Difference]: Without dead ends: 549 [2025-04-13 17:54:26,760 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=356, Invalid=2094, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 17:54:26,760 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 207 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:26,760 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 0 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:54:26,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2025-04-13 17:54:27,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 447. [2025-04-13 17:54:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.069506726457399) internal successors, (1369), 446 states have internal predecessors, (1369), 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) [2025-04-13 17:54:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1369 transitions. [2025-04-13 17:54:27,548 INFO L79 Accepts]: Start accepts. Automaton has 447 states and 1369 transitions. Word has length 21 [2025-04-13 17:54:27,548 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:27,548 INFO L485 AbstractCegarLoop]: Abstraction has 447 states and 1369 transitions. [2025-04-13 17:54:27,548 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 28 states have internal predecessors, (48), 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) [2025-04-13 17:54:27,548 INFO L278 IsEmpty]: Start isEmpty. Operand 447 states and 1369 transitions. [2025-04-13 17:54:27,549 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:27,549 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:27,549 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:27,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2025-04-13 17:54:27,749 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2025-04-13 17:54:27,750 INFO L403 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:27,750 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:27,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1860848252, now seen corresponding path program 89 times [2025-04-13 17:54:27,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:27,750 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989971209] [2025-04-13 17:54:27,750 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:54:27,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:27,761 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:27,769 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:27,770 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:54:27,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:54:27,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:27,991 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989971209] [2025-04-13 17:54:27,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989971209] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:27,991 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044653021] [2025-04-13 17:54:27,991 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:54:27,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:27,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:27,992 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:27,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2025-04-13 17:54:28,170 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:28,197 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:28,197 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:54:28,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:28,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:54:28,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:28,320 INFO L354 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 107 treesize of output 59 [2025-04-13 17:54:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:28,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:28,422 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:54:28,422 INFO L354 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 44 treesize of output 19 [2025-04-13 17:54:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:28,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044653021] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:28,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:28,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2025-04-13 17:54:28,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451360093] [2025-04-13 17:54:28,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:28,444 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:54:28,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:28,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:54:28,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:54:28,444 INFO L87 Difference]: Start difference. First operand 447 states and 1369 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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) [2025-04-13 17:54:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:30,724 INFO L93 Difference]: Finished difference Result 535 states and 1510 transitions. [2025-04-13 17:54:30,724 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 17:54:30,724 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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) Word has length 21 [2025-04-13 17:54:30,725 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:30,726 INFO L225 Difference]: With dead ends: 535 [2025-04-13 17:54:30,726 INFO L226 Difference]: Without dead ends: 528 [2025-04-13 17:54:30,726 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 17:54:30,726 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:30,726 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:54:30,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2025-04-13 17:54:31,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 444. [2025-04-13 17:54:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.0677200902934536) internal successors, (1359), 443 states have internal predecessors, (1359), 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) [2025-04-13 17:54:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1359 transitions. [2025-04-13 17:54:31,503 INFO L79 Accepts]: Start accepts. Automaton has 444 states and 1359 transitions. Word has length 21 [2025-04-13 17:54:31,503 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:31,503 INFO L485 AbstractCegarLoop]: Abstraction has 444 states and 1359 transitions. [2025-04-13 17:54:31,503 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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) [2025-04-13 17:54:31,503 INFO L278 IsEmpty]: Start isEmpty. Operand 444 states and 1359 transitions. [2025-04-13 17:54:31,504 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:31,504 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:31,504 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:31,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2025-04-13 17:54:31,704 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2025-04-13 17:54:31,705 INFO L403 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:31,705 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1827546719, now seen corresponding path program 90 times [2025-04-13 17:54:31,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:31,705 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466301259] [2025-04-13 17:54:31,705 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:54:31,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:31,712 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:31,721 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:31,721 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:54:31,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:54:31,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:31,995 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466301259] [2025-04-13 17:54:31,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466301259] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:31,995 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710178792] [2025-04-13 17:54:31,995 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:54:31,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:31,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:31,997 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:31,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2025-04-13 17:54:32,173 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:32,193 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:32,193 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:54:32,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:32,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 17:54:32,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:32,212 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:54:32,222 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:54:32,421 INFO L354 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 112 treesize of output 72 [2025-04-13 17:54:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:54:32,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:32,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710178792] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:32,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:32,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 9] total 29 [2025-04-13 17:54:32,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800447697] [2025-04-13 17:54:32,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:32,629 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 17:54:32,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:32,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 17:54:32,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2025-04-13 17:54:32,629 INFO L87 Difference]: Start difference. First operand 444 states and 1359 transitions. Second operand has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 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) [2025-04-13 17:54:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:34,885 INFO L93 Difference]: Finished difference Result 515 states and 1470 transitions. [2025-04-13 17:54:34,885 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 17:54:34,885 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 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) Word has length 21 [2025-04-13 17:54:34,885 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:34,887 INFO L225 Difference]: With dead ends: 515 [2025-04-13 17:54:34,887 INFO L226 Difference]: Without dead ends: 504 [2025-04-13 17:54:34,887 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=1717, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 17:54:34,887 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:34,887 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:54:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2025-04-13 17:54:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 444. [2025-04-13 17:54:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.0632054176072234) internal successors, (1357), 443 states have internal predecessors, (1357), 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) [2025-04-13 17:54:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1357 transitions. [2025-04-13 17:54:35,701 INFO L79 Accepts]: Start accepts. Automaton has 444 states and 1357 transitions. Word has length 21 [2025-04-13 17:54:35,701 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:35,701 INFO L485 AbstractCegarLoop]: Abstraction has 444 states and 1357 transitions. [2025-04-13 17:54:35,701 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 29 states have internal predecessors, (52), 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) [2025-04-13 17:54:35,701 INFO L278 IsEmpty]: Start isEmpty. Operand 444 states and 1357 transitions. [2025-04-13 17:54:35,702 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:35,702 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:35,702 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:35,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2025-04-13 17:54:35,902 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2025-04-13 17:54:35,902 INFO L403 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:35,902 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:35,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1774960799, now seen corresponding path program 91 times [2025-04-13 17:54:35,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:35,903 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582193340] [2025-04-13 17:54:35,903 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:54:35,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:35,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:54:35,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:35,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:54:35,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:54:36,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:36,216 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582193340] [2025-04-13 17:54:36,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582193340] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:36,216 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103718189] [2025-04-13 17:54:36,216 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:54:36,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:36,218 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:36,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2025-04-13 17:54:36,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:54:36,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:36,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:54:36,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:36,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 17:54:36,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:36,569 INFO L354 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 107 treesize of output 59 [2025-04-13 17:54:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:36,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:36,697 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:54:36,697 INFO L354 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 83 treesize of output 42 [2025-04-13 17:54:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:36,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103718189] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:36,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:36,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:54:36,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488817468] [2025-04-13 17:54:36,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:36,732 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:54:36,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:36,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:54:36,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:54:36,732 INFO L87 Difference]: Start difference. First operand 444 states and 1357 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:54:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:38,663 INFO L93 Difference]: Finished difference Result 504 states and 1454 transitions. [2025-04-13 17:54:38,663 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 17:54:38,663 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) Word has length 21 [2025-04-13 17:54:38,663 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:38,665 INFO L225 Difference]: With dead ends: 504 [2025-04-13 17:54:38,665 INFO L226 Difference]: Without dead ends: 496 [2025-04-13 17:54:38,665 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 17:54:38,665 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 101 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:38,665 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 0 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:54:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2025-04-13 17:54:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2025-04-13 17:54:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.0586907449209932) internal successors, (1355), 443 states have internal predecessors, (1355), 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) [2025-04-13 17:54:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1355 transitions. [2025-04-13 17:54:39,453 INFO L79 Accepts]: Start accepts. Automaton has 444 states and 1355 transitions. Word has length 21 [2025-04-13 17:54:39,453 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:39,453 INFO L485 AbstractCegarLoop]: Abstraction has 444 states and 1355 transitions. [2025-04-13 17:54:39,453 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:54:39,453 INFO L278 IsEmpty]: Start isEmpty. Operand 444 states and 1355 transitions. [2025-04-13 17:54:39,454 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:39,454 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:39,454 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:39,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2025-04-13 17:54:39,654 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2025-04-13 17:54:39,654 INFO L403 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:39,654 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:39,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1827691322, now seen corresponding path program 92 times [2025-04-13 17:54:39,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:39,655 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545558623] [2025-04-13 17:54:39,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:54:39,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:39,662 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:54:39,670 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:39,670 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:54:39,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:39,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:39,850 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545558623] [2025-04-13 17:54:39,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545558623] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:39,850 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115576281] [2025-04-13 17:54:39,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:54:39,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:39,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:39,852 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:39,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2025-04-13 17:54:40,042 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:54:40,062 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:40,062 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:54:40,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:40,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 17:54:40,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:40,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:40,257 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:54:40,257 INFO L354 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 53 treesize of output 29 [2025-04-13 17:54:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:40,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115576281] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:40,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:40,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2025-04-13 17:54:40,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381737731] [2025-04-13 17:54:40,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:40,301 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:54:40,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:40,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:54:40,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:54:40,301 INFO L87 Difference]: Start difference. First operand 444 states and 1355 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 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) [2025-04-13 17:54:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:42,331 INFO L93 Difference]: Finished difference Result 538 states and 1525 transitions. [2025-04-13 17:54:42,331 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 17:54:42,331 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 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) Word has length 21 [2025-04-13 17:54:42,331 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:42,333 INFO L225 Difference]: With dead ends: 538 [2025-04-13 17:54:42,333 INFO L226 Difference]: Without dead ends: 531 [2025-04-13 17:54:42,333 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 17:54:42,333 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 92 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:42,333 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 0 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:54:42,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2025-04-13 17:54:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 444. [2025-04-13 17:54:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.0586907449209932) internal successors, (1355), 443 states have internal predecessors, (1355), 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) [2025-04-13 17:54:43,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1355 transitions. [2025-04-13 17:54:43,149 INFO L79 Accepts]: Start accepts. Automaton has 444 states and 1355 transitions. Word has length 21 [2025-04-13 17:54:43,149 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:43,149 INFO L485 AbstractCegarLoop]: Abstraction has 444 states and 1355 transitions. [2025-04-13 17:54:43,149 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 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) [2025-04-13 17:54:43,149 INFO L278 IsEmpty]: Start isEmpty. Operand 444 states and 1355 transitions. [2025-04-13 17:54:43,150 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:43,150 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:43,150 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:43,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2025-04-13 17:54:43,350 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2025-04-13 17:54:43,350 INFO L403 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:43,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2005223376, now seen corresponding path program 93 times [2025-04-13 17:54:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:43,351 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141198104] [2025-04-13 17:54:43,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:54:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:43,358 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:43,370 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:43,370 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:54:43,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:43,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:43,574 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141198104] [2025-04-13 17:54:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141198104] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:43,574 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647234979] [2025-04-13 17:54:43,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:54:43,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:43,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:43,576 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:43,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2025-04-13 17:54:43,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:43,782 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:43,782 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:54:43,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:43,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-04-13 17:54:43,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:43,807 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:54:43,818 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:54:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:54:43,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:44,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647234979] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:44,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:44,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 26 [2025-04-13 17:54:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203971724] [2025-04-13 17:54:44,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:44,115 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:54:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:44,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:54:44,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:54:44,115 INFO L87 Difference]: Start difference. First operand 444 states and 1355 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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) [2025-04-13 17:54:46,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:46,868 INFO L93 Difference]: Finished difference Result 607 states and 1659 transitions. [2025-04-13 17:54:46,868 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 17:54:46,868 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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) Word has length 21 [2025-04-13 17:54:46,868 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:46,870 INFO L225 Difference]: With dead ends: 607 [2025-04-13 17:54:46,870 INFO L226 Difference]: Without dead ends: 600 [2025-04-13 17:54:46,870 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=278, Invalid=1978, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 17:54:46,870 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 123 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:46,870 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 0 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:54:46,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2025-04-13 17:54:47,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 444. [2025-04-13 17:54:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.0586907449209932) internal successors, (1355), 443 states have internal predecessors, (1355), 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) [2025-04-13 17:54:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1355 transitions. [2025-04-13 17:54:47,718 INFO L79 Accepts]: Start accepts. Automaton has 444 states and 1355 transitions. Word has length 21 [2025-04-13 17:54:47,718 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:47,718 INFO L485 AbstractCegarLoop]: Abstraction has 444 states and 1355 transitions. [2025-04-13 17:54:47,718 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 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) [2025-04-13 17:54:47,718 INFO L278 IsEmpty]: Start isEmpty. Operand 444 states and 1355 transitions. [2025-04-13 17:54:47,719 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:47,719 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:47,720 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:47,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2025-04-13 17:54:47,920 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:47,920 INFO L403 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:47,921 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash 621304944, now seen corresponding path program 94 times [2025-04-13 17:54:47,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:47,921 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895318197] [2025-04-13 17:54:47,921 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:54:47,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:47,928 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:54:47,937 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:47,937 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:54:47,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:54:48,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:48,220 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895318197] [2025-04-13 17:54:48,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895318197] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:48,220 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255237640] [2025-04-13 17:54:48,220 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:54:48,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:48,222 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:48,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2025-04-13 17:54:48,404 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:54:48,424 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:48,425 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:54:48,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:48,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:54:48,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:48,551 INFO L354 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 107 treesize of output 59 [2025-04-13 17:54:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:54:48,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:48,648 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:54:48,648 INFO L354 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 53 treesize of output 29 [2025-04-13 17:54:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:48,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255237640] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:48,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:48,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 25 [2025-04-13 17:54:48,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516000248] [2025-04-13 17:54:48,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:48,697 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:54:48,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:48,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:54:48,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:54:48,697 INFO L87 Difference]: Start difference. First operand 444 states and 1355 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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) [2025-04-13 17:54:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:51,664 INFO L93 Difference]: Finished difference Result 585 states and 1610 transitions. [2025-04-13 17:54:51,665 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 17:54:51,665 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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) Word has length 21 [2025-04-13 17:54:51,665 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:51,666 INFO L225 Difference]: With dead ends: 585 [2025-04-13 17:54:51,666 INFO L226 Difference]: Without dead ends: 578 [2025-04-13 17:54:51,666 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=358, Invalid=2504, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 17:54:51,666 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 123 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:51,666 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 0 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:54:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-04-13 17:54:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 444. [2025-04-13 17:54:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.0586907449209932) internal successors, (1355), 443 states have internal predecessors, (1355), 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) [2025-04-13 17:54:52,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1355 transitions. [2025-04-13 17:54:52,491 INFO L79 Accepts]: Start accepts. Automaton has 444 states and 1355 transitions. Word has length 21 [2025-04-13 17:54:52,491 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:52,491 INFO L485 AbstractCegarLoop]: Abstraction has 444 states and 1355 transitions. [2025-04-13 17:54:52,491 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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) [2025-04-13 17:54:52,491 INFO L278 IsEmpty]: Start isEmpty. Operand 444 states and 1355 transitions. [2025-04-13 17:54:52,492 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:52,492 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:52,492 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:52,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2025-04-13 17:54:52,692 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:52,692 INFO L403 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:52,692 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash 281470038, now seen corresponding path program 95 times [2025-04-13 17:54:52,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:52,693 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063450351] [2025-04-13 17:54:52,693 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:54:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:52,700 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:52,706 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:52,706 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:54:52,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:54:52,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:52,892 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063450351] [2025-04-13 17:54:52,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063450351] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:52,893 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860290805] [2025-04-13 17:54:52,893 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:54:52,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:52,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:52,895 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:52,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2025-04-13 17:54:53,079 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:53,101 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:53,101 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:54:53,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:53,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-13 17:54:53,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:54:53,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:53,241 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:54:53,241 INFO L354 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 51 treesize of output 27 [2025-04-13 17:54:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860290805] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:53,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:53,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 23 [2025-04-13 17:54:53,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934795233] [2025-04-13 17:54:53,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:53,302 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:54:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:53,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:54:53,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:54:53,303 INFO L87 Difference]: Start difference. First operand 444 states and 1355 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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) [2025-04-13 17:54:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:54:56,262 INFO L93 Difference]: Finished difference Result 639 states and 1724 transitions. [2025-04-13 17:54:56,263 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 17:54:56,263 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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) Word has length 21 [2025-04-13 17:54:56,263 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:54:56,264 INFO L225 Difference]: With dead ends: 639 [2025-04-13 17:54:56,264 INFO L226 Difference]: Without dead ends: 619 [2025-04-13 17:54:56,265 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2025-04-13 17:54:56,265 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 208 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:54:56,265 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 0 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:54:56,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2025-04-13 17:54:57,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 448. [2025-04-13 17:54:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 3.0671140939597317) internal successors, (1371), 447 states have internal predecessors, (1371), 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) [2025-04-13 17:54:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1371 transitions. [2025-04-13 17:54:57,105 INFO L79 Accepts]: Start accepts. Automaton has 448 states and 1371 transitions. Word has length 21 [2025-04-13 17:54:57,105 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:54:57,105 INFO L485 AbstractCegarLoop]: Abstraction has 448 states and 1371 transitions. [2025-04-13 17:54:57,105 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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) [2025-04-13 17:54:57,106 INFO L278 IsEmpty]: Start isEmpty. Operand 448 states and 1371 transitions. [2025-04-13 17:54:57,106 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:54:57,106 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:54:57,106 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:54:57,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2025-04-13 17:54:57,307 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2025-04-13 17:54:57,307 INFO L403 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:54:57,307 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:54:57,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1326051148, now seen corresponding path program 96 times [2025-04-13 17:54:57,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:54:57,308 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544428028] [2025-04-13 17:54:57,308 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:54:57,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:54:57,315 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:57,324 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:57,324 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:54:57,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:54:57,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:54:57,584 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544428028] [2025-04-13 17:54:57,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544428028] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:54:57,584 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613744980] [2025-04-13 17:54:57,584 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:54:57,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:54:57,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:54:57,586 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:54:57,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2025-04-13 17:54:57,778 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:54:57,798 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:54:57,798 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:54:57,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:54:57,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-04-13 17:54:57,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:54:57,807 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:54:57,815 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:54:57,901 INFO L354 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 112 treesize of output 72 [2025-04-13 17:54:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:54:57,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:54:58,061 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:54:58,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613744980] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:54:58,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:54:58,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 9] total 27 [2025-04-13 17:54:58,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037603520] [2025-04-13 17:54:58,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:54:58,062 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 17:54:58,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:54:58,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 17:54:58,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:54:58,062 INFO L87 Difference]: Start difference. First operand 448 states and 1371 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 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) [2025-04-13 17:55:03,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:03,142 INFO L93 Difference]: Finished difference Result 698 states and 1853 transitions. [2025-04-13 17:55:03,143 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-04-13 17:55:03,143 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 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) Word has length 21 [2025-04-13 17:55:03,143 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:03,144 INFO L225 Difference]: With dead ends: 698 [2025-04-13 17:55:03,144 INFO L226 Difference]: Without dead ends: 687 [2025-04-13 17:55:03,145 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2225 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1079, Invalid=6753, Unknown=0, NotChecked=0, Total=7832 [2025-04-13 17:55:03,145 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 226 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:03,145 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 0 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 17:55:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2025-04-13 17:55:03,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 456. [2025-04-13 17:55:03,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 3.0615384615384613) internal successors, (1393), 455 states have internal predecessors, (1393), 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) [2025-04-13 17:55:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1393 transitions. [2025-04-13 17:55:03,994 INFO L79 Accepts]: Start accepts. Automaton has 456 states and 1393 transitions. Word has length 21 [2025-04-13 17:55:03,994 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:03,994 INFO L485 AbstractCegarLoop]: Abstraction has 456 states and 1393 transitions. [2025-04-13 17:55:03,994 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 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) [2025-04-13 17:55:03,994 INFO L278 IsEmpty]: Start isEmpty. Operand 456 states and 1393 transitions. [2025-04-13 17:55:03,994 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:03,994 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:03,995 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:04,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2025-04-13 17:55:04,195 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2025-04-13 17:55:04,195 INFO L403 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:04,195 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:04,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1436873668, now seen corresponding path program 97 times [2025-04-13 17:55:04,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:04,195 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723981658] [2025-04-13 17:55:04,195 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:55:04,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:04,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:55:04,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:04,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:55:04,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:55:04,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:04,491 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723981658] [2025-04-13 17:55:04,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723981658] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:04,491 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938429140] [2025-04-13 17:55:04,491 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:55:04,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:04,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:04,493 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:04,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2025-04-13 17:55:04,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:55:04,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:04,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:55:04,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:04,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:55:04,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:04,774 INFO L354 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 107 treesize of output 59 [2025-04-13 17:55:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:04,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:04,847 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:04,848 INFO L354 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 51 treesize of output 27 [2025-04-13 17:55:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:04,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938429140] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:04,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:04,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:55:04,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532086524] [2025-04-13 17:55:04,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:04,909 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:55:04,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:04,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:55:04,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:55:04,909 INFO L87 Difference]: Start difference. First operand 456 states and 1393 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:55:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:08,799 INFO L93 Difference]: Finished difference Result 704 states and 1853 transitions. [2025-04-13 17:55:08,799 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 17:55:08,799 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) Word has length 21 [2025-04-13 17:55:08,799 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:08,801 INFO L225 Difference]: With dead ends: 704 [2025-04-13 17:55:08,801 INFO L226 Difference]: Without dead ends: 697 [2025-04-13 17:55:08,801 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=415, Invalid=3125, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 17:55:08,802 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:08,802 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 0 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:55:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2025-04-13 17:55:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 458. [2025-04-13 17:55:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 3.0678336980306344) internal successors, (1402), 457 states have internal predecessors, (1402), 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) [2025-04-13 17:55:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1402 transitions. [2025-04-13 17:55:09,687 INFO L79 Accepts]: Start accepts. Automaton has 458 states and 1402 transitions. Word has length 21 [2025-04-13 17:55:09,687 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:09,687 INFO L485 AbstractCegarLoop]: Abstraction has 458 states and 1402 transitions. [2025-04-13 17:55:09,687 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:55:09,687 INFO L278 IsEmpty]: Start isEmpty. Operand 458 states and 1402 transitions. [2025-04-13 17:55:09,687 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:09,687 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:09,687 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:09,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2025-04-13 17:55:09,888 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:09,888 INFO L403 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:09,889 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1350986215, now seen corresponding path program 98 times [2025-04-13 17:55:09,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:09,889 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981199300] [2025-04-13 17:55:09,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:55:09,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:09,897 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:55:09,907 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:09,907 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:55:09,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:10,177 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:55:10,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:10,178 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981199300] [2025-04-13 17:55:10,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981199300] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:10,178 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658973839] [2025-04-13 17:55:10,178 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:55:10,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:10,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:10,179 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:10,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2025-04-13 17:55:10,367 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:55:10,388 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:10,388 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:55:10,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:10,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 17:55:10,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:10,462 INFO L354 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 112 treesize of output 72 [2025-04-13 17:55:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:55:10,485 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:10,535 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:10,535 INFO L354 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 87 treesize of output 47 [2025-04-13 17:55:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658973839] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:10,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 22 [2025-04-13 17:55:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088278897] [2025-04-13 17:55:10,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:10,599 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:55:10,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:10,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:55:10,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:55:10,599 INFO L87 Difference]: Start difference. First operand 458 states and 1402 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:55:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:14,420 INFO L93 Difference]: Finished difference Result 744 states and 1940 transitions. [2025-04-13 17:55:14,420 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 17:55:14,421 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) Word has length 21 [2025-04-13 17:55:14,421 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:14,422 INFO L225 Difference]: With dead ends: 744 [2025-04-13 17:55:14,422 INFO L226 Difference]: Without dead ends: 660 [2025-04-13 17:55:14,423 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=358, Invalid=2192, Unknown=0, NotChecked=0, Total=2550 [2025-04-13 17:55:14,423 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:14,423 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 0 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:55:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2025-04-13 17:55:15,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 455. [2025-04-13 17:55:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 2.962555066079295) internal successors, (1345), 454 states have internal predecessors, (1345), 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) [2025-04-13 17:55:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1345 transitions. [2025-04-13 17:55:15,355 INFO L79 Accepts]: Start accepts. Automaton has 455 states and 1345 transitions. Word has length 21 [2025-04-13 17:55:15,355 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:15,355 INFO L485 AbstractCegarLoop]: Abstraction has 455 states and 1345 transitions. [2025-04-13 17:55:15,355 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:55:15,355 INFO L278 IsEmpty]: Start isEmpty. Operand 455 states and 1345 transitions. [2025-04-13 17:55:15,355 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:15,355 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:15,355 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:15,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2025-04-13 17:55:15,556 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:15,556 INFO L403 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:15,556 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:15,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1239868814, now seen corresponding path program 99 times [2025-04-13 17:55:15,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:15,556 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141498469] [2025-04-13 17:55:15,556 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:55:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:15,564 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:55:15,577 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:15,577 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:55:15,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:15,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:15,748 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141498469] [2025-04-13 17:55:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141498469] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:15,748 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636899497] [2025-04-13 17:55:15,748 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:55:15,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:15,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:15,750 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:15,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2025-04-13 17:55:15,948 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:55:15,970 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:15,970 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:55:15,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:15,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:55:15,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:16,084 INFO L354 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 112 treesize of output 72 [2025-04-13 17:55:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:16,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:16,168 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:16,168 INFO L354 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 117 treesize of output 61 [2025-04-13 17:55:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636899497] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:16,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:16,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2025-04-13 17:55:16,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498992066] [2025-04-13 17:55:16,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:16,237 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:55:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:16,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:55:16,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:55:16,237 INFO L87 Difference]: Start difference. First operand 455 states and 1345 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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) [2025-04-13 17:55:19,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:19,173 INFO L93 Difference]: Finished difference Result 590 states and 1591 transitions. [2025-04-13 17:55:19,173 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 17:55:19,173 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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) Word has length 21 [2025-04-13 17:55:19,173 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:19,175 INFO L225 Difference]: With dead ends: 590 [2025-04-13 17:55:19,175 INFO L226 Difference]: Without dead ends: 581 [2025-04-13 17:55:19,175 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 17:55:19,175 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:19,175 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:55:19,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-04-13 17:55:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 457. [2025-04-13 17:55:20,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 2.960526315789474) internal successors, (1350), 456 states have internal predecessors, (1350), 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) [2025-04-13 17:55:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1350 transitions. [2025-04-13 17:55:20,142 INFO L79 Accepts]: Start accepts. Automaton has 457 states and 1350 transitions. Word has length 21 [2025-04-13 17:55:20,142 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:20,142 INFO L485 AbstractCegarLoop]: Abstraction has 457 states and 1350 transitions. [2025-04-13 17:55:20,142 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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) [2025-04-13 17:55:20,142 INFO L278 IsEmpty]: Start isEmpty. Operand 457 states and 1350 transitions. [2025-04-13 17:55:20,143 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:20,143 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:20,143 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:20,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2025-04-13 17:55:20,343 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2025-04-13 17:55:20,343 INFO L403 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:20,343 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:20,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1129046294, now seen corresponding path program 100 times [2025-04-13 17:55:20,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:20,344 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177476929] [2025-04-13 17:55:20,344 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:55:20,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:20,352 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:55:20,361 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:20,361 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:55:20,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:55:20,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:20,681 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177476929] [2025-04-13 17:55:20,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177476929] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:20,681 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467098476] [2025-04-13 17:55:20,681 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:55:20,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:20,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:20,683 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:20,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2025-04-13 17:55:20,883 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:55:20,904 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:20,904 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:55:20,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:20,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:55:20,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:21,003 INFO L354 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 132 treesize of output 72 [2025-04-13 17:55:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:55:21,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:21,076 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:21,076 INFO L354 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 87 treesize of output 47 [2025-04-13 17:55:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:21,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467098476] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:21,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:21,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 23 [2025-04-13 17:55:21,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090188471] [2025-04-13 17:55:21,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:21,147 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:55:21,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:21,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:55:21,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:55:21,147 INFO L87 Difference]: Start difference. First operand 457 states and 1350 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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) [2025-04-13 17:55:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:24,155 INFO L93 Difference]: Finished difference Result 591 states and 1597 transitions. [2025-04-13 17:55:24,155 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 17:55:24,155 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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) Word has length 21 [2025-04-13 17:55:24,155 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:24,157 INFO L225 Difference]: With dead ends: 591 [2025-04-13 17:55:24,157 INFO L226 Difference]: Without dead ends: 584 [2025-04-13 17:55:24,157 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=1439, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 17:55:24,157 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:24,157 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:55:24,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2025-04-13 17:55:25,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 457. [2025-04-13 17:55:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 2.960526315789474) internal successors, (1350), 456 states have internal predecessors, (1350), 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) [2025-04-13 17:55:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1350 transitions. [2025-04-13 17:55:25,086 INFO L79 Accepts]: Start accepts. Automaton has 457 states and 1350 transitions. Word has length 21 [2025-04-13 17:55:25,086 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:25,086 INFO L485 AbstractCegarLoop]: Abstraction has 457 states and 1350 transitions. [2025-04-13 17:55:25,086 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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) [2025-04-13 17:55:25,086 INFO L278 IsEmpty]: Start isEmpty. Operand 457 states and 1350 transitions. [2025-04-13 17:55:25,087 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:25,087 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:25,087 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:25,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2025-04-13 17:55:25,287 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2025-04-13 17:55:25,287 INFO L403 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:25,288 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:25,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1162347827, now seen corresponding path program 101 times [2025-04-13 17:55:25,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:25,288 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742039965] [2025-04-13 17:55:25,288 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:55:25,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:25,295 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:55:25,303 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:25,303 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:55:25,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:55:25,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:25,535 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742039965] [2025-04-13 17:55:25,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742039965] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:25,535 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430170966] [2025-04-13 17:55:25,535 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:55:25,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:25,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:25,537 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:25,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2025-04-13 17:55:25,731 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:55:25,755 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:25,755 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:55:25,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:25,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-04-13 17:55:25,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:25,857 INFO L354 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 107 treesize of output 59 [2025-04-13 17:55:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:25,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:25,942 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:25,943 INFO L354 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 51 treesize of output 27 [2025-04-13 17:55:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:26,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430170966] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:26,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:26,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24 [2025-04-13 17:55:26,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864241865] [2025-04-13 17:55:26,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:26,013 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 17:55:26,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:26,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 17:55:26,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:55:26,013 INFO L87 Difference]: Start difference. First operand 457 states and 1350 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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) [2025-04-13 17:55:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:29,474 INFO L93 Difference]: Finished difference Result 641 states and 1678 transitions. [2025-04-13 17:55:29,474 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 17:55:29,474 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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) Word has length 21 [2025-04-13 17:55:29,474 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:29,476 INFO L225 Difference]: With dead ends: 641 [2025-04-13 17:55:29,476 INFO L226 Difference]: Without dead ends: 624 [2025-04-13 17:55:29,476 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=326, Invalid=2326, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 17:55:29,476 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:29,476 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:55:29,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2025-04-13 17:55:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 457. [2025-04-13 17:55:30,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 2.942982456140351) internal successors, (1342), 456 states have internal predecessors, (1342), 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) [2025-04-13 17:55:30,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 1342 transitions. [2025-04-13 17:55:30,447 INFO L79 Accepts]: Start accepts. Automaton has 457 states and 1342 transitions. Word has length 21 [2025-04-13 17:55:30,447 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:30,447 INFO L485 AbstractCegarLoop]: Abstraction has 457 states and 1342 transitions. [2025-04-13 17:55:30,447 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 24 states have internal predecessors, (44), 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) [2025-04-13 17:55:30,447 INFO L278 IsEmpty]: Start isEmpty. Operand 457 states and 1342 transitions. [2025-04-13 17:55:30,448 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:30,448 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:30,448 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:30,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2025-04-13 17:55:30,648 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2025-04-13 17:55:30,648 INFO L403 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:30,648 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1214933747, now seen corresponding path program 102 times [2025-04-13 17:55:30,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:30,649 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884034341] [2025-04-13 17:55:30,649 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:55:30,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:30,656 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:55:30,667 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:30,667 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:55:30,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:55:30,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:30,921 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884034341] [2025-04-13 17:55:30,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884034341] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:30,922 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131609087] [2025-04-13 17:55:30,922 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:55:30,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:30,923 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:30,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2025-04-13 17:55:31,124 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:55:31,144 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:31,144 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:55:31,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:31,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 17:55:31,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:31,213 INFO L354 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 91 treesize of output 59 [2025-04-13 17:55:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:55:31,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:31,295 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:31,296 INFO L354 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 51 treesize of output 27 [2025-04-13 17:55:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:31,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131609087] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:31,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:31,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 22 [2025-04-13 17:55:31,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307804438] [2025-04-13 17:55:31,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:31,360 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:55:31,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:31,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:55:31,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:55:31,360 INFO L87 Difference]: Start difference. First operand 457 states and 1342 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:55:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:35,897 INFO L93 Difference]: Finished difference Result 756 states and 1904 transitions. [2025-04-13 17:55:35,898 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-04-13 17:55:35,898 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) Word has length 21 [2025-04-13 17:55:35,898 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:35,900 INFO L225 Difference]: With dead ends: 756 [2025-04-13 17:55:35,900 INFO L226 Difference]: Without dead ends: 699 [2025-04-13 17:55:35,900 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=537, Invalid=3495, Unknown=0, NotChecked=0, Total=4032 [2025-04-13 17:55:35,900 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 201 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:35,900 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 0 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:55:35,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2025-04-13 17:55:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 447. [2025-04-13 17:55:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 2.890134529147982) internal successors, (1289), 446 states have internal predecessors, (1289), 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) [2025-04-13 17:55:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1289 transitions. [2025-04-13 17:55:36,974 INFO L79 Accepts]: Start accepts. Automaton has 447 states and 1289 transitions. Word has length 21 [2025-04-13 17:55:36,974 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:36,974 INFO L485 AbstractCegarLoop]: Abstraction has 447 states and 1289 transitions. [2025-04-13 17:55:36,974 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:55:36,974 INFO L278 IsEmpty]: Start isEmpty. Operand 447 states and 1289 transitions. [2025-04-13 17:55:36,975 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:36,975 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:36,975 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:36,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2025-04-13 17:55:37,175 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:37,175 INFO L403 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:37,176 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash -503409959, now seen corresponding path program 103 times [2025-04-13 17:55:37,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:37,176 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284622866] [2025-04-13 17:55:37,176 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:55:37,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:37,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:55:37,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:37,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:55:37,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:55:37,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:37,459 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284622866] [2025-04-13 17:55:37,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284622866] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:37,460 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000034432] [2025-04-13 17:55:37,460 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:55:37,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:37,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:37,461 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:37,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2025-04-13 17:55:37,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:55:37,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:37,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:55:37,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:37,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:55:37,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:37,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:37,850 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:37,851 INFO L354 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 51 treesize of output 27 [2025-04-13 17:55:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:37,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000034432] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:37,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:37,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:55:37,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777466140] [2025-04-13 17:55:37,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:37,914 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:55:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:37,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:55:37,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:55:37,914 INFO L87 Difference]: Start difference. First operand 447 states and 1289 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:55:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:40,824 INFO L93 Difference]: Finished difference Result 574 states and 1522 transitions. [2025-04-13 17:55:40,824 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 17:55:40,824 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) Word has length 21 [2025-04-13 17:55:40,824 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:40,826 INFO L225 Difference]: With dead ends: 574 [2025-04-13 17:55:40,826 INFO L226 Difference]: Without dead ends: 566 [2025-04-13 17:55:40,826 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=1727, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 17:55:40,826 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:40,826 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:55:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-04-13 17:55:41,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 445. [2025-04-13 17:55:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.8873873873873874) internal successors, (1282), 444 states have internal predecessors, (1282), 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) [2025-04-13 17:55:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1282 transitions. [2025-04-13 17:55:41,811 INFO L79 Accepts]: Start accepts. Automaton has 445 states and 1282 transitions. Word has length 21 [2025-04-13 17:55:41,811 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:41,811 INFO L485 AbstractCegarLoop]: Abstraction has 445 states and 1282 transitions. [2025-04-13 17:55:41,811 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:55:41,811 INFO L278 IsEmpty]: Start isEmpty. Operand 445 states and 1282 transitions. [2025-04-13 17:55:41,812 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:41,812 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:41,812 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:41,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2025-04-13 17:55:42,012 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2025-04-13 17:55:42,012 INFO L403 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:42,012 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2107236684, now seen corresponding path program 104 times [2025-04-13 17:55:42,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:42,013 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773811909] [2025-04-13 17:55:42,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:55:42,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:42,021 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:55:42,029 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:42,030 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:55:42,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:42,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:42,217 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773811909] [2025-04-13 17:55:42,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773811909] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:42,217 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601772474] [2025-04-13 17:55:42,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:55:42,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:42,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:42,219 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:42,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2025-04-13 17:55:42,422 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:55:42,441 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:42,442 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:55:42,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:42,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:55:42,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:42,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:42,665 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:42,665 INFO L354 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 53 treesize of output 29 [2025-04-13 17:55:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:42,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601772474] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:42,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:42,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2025-04-13 17:55:42,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172479245] [2025-04-13 17:55:42,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:42,716 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:55:42,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:42,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:55:42,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:55:42,717 INFO L87 Difference]: Start difference. First operand 445 states and 1282 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 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) [2025-04-13 17:55:44,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:44,975 INFO L93 Difference]: Finished difference Result 526 states and 1436 transitions. [2025-04-13 17:55:44,975 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 17:55:44,976 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 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) Word has length 21 [2025-04-13 17:55:44,976 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:44,977 INFO L225 Difference]: With dead ends: 526 [2025-04-13 17:55:44,977 INFO L226 Difference]: Without dead ends: 519 [2025-04-13 17:55:44,977 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:55:44,977 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:44,978 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:55:44,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2025-04-13 17:55:46,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 445. [2025-04-13 17:55:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.8873873873873874) internal successors, (1282), 444 states have internal predecessors, (1282), 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) [2025-04-13 17:55:46,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1282 transitions. [2025-04-13 17:55:46,017 INFO L79 Accepts]: Start accepts. Automaton has 445 states and 1282 transitions. Word has length 21 [2025-04-13 17:55:46,017 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:46,018 INFO L485 AbstractCegarLoop]: Abstraction has 445 states and 1282 transitions. [2025-04-13 17:55:46,018 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 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) [2025-04-13 17:55:46,018 INFO L278 IsEmpty]: Start isEmpty. Operand 445 states and 1282 transitions. [2025-04-13 17:55:46,018 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:46,018 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:46,018 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:46,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2025-04-13 17:55:46,218 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2025-04-13 17:55:46,219 INFO L403 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:46,219 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:46,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2026106399, now seen corresponding path program 105 times [2025-04-13 17:55:46,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:46,219 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325150014] [2025-04-13 17:55:46,219 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:55:46,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:46,227 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:55:46,239 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:46,239 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:55:46,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:46,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:46,403 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325150014] [2025-04-13 17:55:46,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325150014] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:46,403 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578524376] [2025-04-13 17:55:46,403 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:55:46,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:46,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:46,404 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:46,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2025-04-13 17:55:46,606 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:55:46,629 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:46,629 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:55:46,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:46,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-04-13 17:55:46,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:46,763 INFO L354 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 61 treesize of output 37 [2025-04-13 17:55:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:46,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:46,848 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:46,848 INFO L354 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 119 treesize of output 63 [2025-04-13 17:55:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:46,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578524376] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:46,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:46,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 24 [2025-04-13 17:55:46,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877246240] [2025-04-13 17:55:46,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:46,908 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 17:55:46,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:46,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 17:55:46,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:55:46,909 INFO L87 Difference]: Start difference. First operand 445 states and 1282 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2025-04-13 17:55:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:48,968 INFO L93 Difference]: Finished difference Result 485 states and 1349 transitions. [2025-04-13 17:55:48,968 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 17:55:48,968 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) Word has length 21 [2025-04-13 17:55:48,968 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:48,969 INFO L225 Difference]: With dead ends: 485 [2025-04-13 17:55:48,970 INFO L226 Difference]: Without dead ends: 462 [2025-04-13 17:55:48,970 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:55:48,970 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:48,970 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:55:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2025-04-13 17:55:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 445. [2025-04-13 17:55:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.8828828828828827) internal successors, (1280), 444 states have internal predecessors, (1280), 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) [2025-04-13 17:55:49,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1280 transitions. [2025-04-13 17:55:49,979 INFO L79 Accepts]: Start accepts. Automaton has 445 states and 1280 transitions. Word has length 21 [2025-04-13 17:55:49,979 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:49,979 INFO L485 AbstractCegarLoop]: Abstraction has 445 states and 1280 transitions. [2025-04-13 17:55:49,979 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2025-04-13 17:55:49,979 INFO L278 IsEmpty]: Start isEmpty. Operand 445 states and 1280 transitions. [2025-04-13 17:55:49,980 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:49,980 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:49,980 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:49,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2025-04-13 17:55:50,180 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2025-04-13 17:55:50,180 INFO L403 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:50,180 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2010198558, now seen corresponding path program 106 times [2025-04-13 17:55:50,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:50,181 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667755401] [2025-04-13 17:55:50,181 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:55:50,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:50,189 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:55:50,196 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:50,196 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:55:50,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:50,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:50,427 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667755401] [2025-04-13 17:55:50,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667755401] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:50,427 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891467226] [2025-04-13 17:55:50,427 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:55:50,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:50,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:50,429 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:50,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2025-04-13 17:55:50,628 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:55:50,648 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:50,648 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:55:50,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:50,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 17:55:50,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:55:50,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:50,860 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:50,860 INFO L354 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 53 treesize of output 29 [2025-04-13 17:55:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:50,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891467226] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:50,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:50,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2025-04-13 17:55:50,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050762388] [2025-04-13 17:55:50,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:50,913 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:55:50,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:50,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:55:50,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:55:50,913 INFO L87 Difference]: Start difference. First operand 445 states and 1280 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 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) [2025-04-13 17:55:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:55:53,760 INFO L93 Difference]: Finished difference Result 541 states and 1474 transitions. [2025-04-13 17:55:53,760 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 17:55:53,760 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 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) Word has length 21 [2025-04-13 17:55:53,760 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:55:53,762 INFO L225 Difference]: With dead ends: 541 [2025-04-13 17:55:53,762 INFO L226 Difference]: Without dead ends: 534 [2025-04-13 17:55:53,762 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=1566, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 17:55:53,762 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 150 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:55:53,762 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 0 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:55:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-04-13 17:55:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 445. [2025-04-13 17:55:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.8828828828828827) internal successors, (1280), 444 states have internal predecessors, (1280), 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) [2025-04-13 17:55:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1280 transitions. [2025-04-13 17:55:54,797 INFO L79 Accepts]: Start accepts. Automaton has 445 states and 1280 transitions. Word has length 21 [2025-04-13 17:55:54,797 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:55:54,797 INFO L485 AbstractCegarLoop]: Abstraction has 445 states and 1280 transitions. [2025-04-13 17:55:54,797 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 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) [2025-04-13 17:55:54,797 INFO L278 IsEmpty]: Start isEmpty. Operand 445 states and 1280 transitions. [2025-04-13 17:55:54,798 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:55:54,798 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:55:54,798 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:55:54,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2025-04-13 17:55:54,998 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2025-04-13 17:55:54,999 INFO L403 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:55:54,999 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:55:54,999 INFO L85 PathProgramCache]: Analyzing trace with hash 455263292, now seen corresponding path program 107 times [2025-04-13 17:55:54,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:55:54,999 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62021619] [2025-04-13 17:55:54,999 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:55:54,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:55:55,007 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:55:55,015 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:55,015 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:55:55,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:55:55,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:55:55,252 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62021619] [2025-04-13 17:55:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62021619] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:55:55,252 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71474534] [2025-04-13 17:55:55,252 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:55:55,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:55:55,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:55:55,254 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:55:55,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2025-04-13 17:55:55,461 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:55:55,486 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:55:55,486 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:55:55,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:55:55,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 17:55:55,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:55:55,611 INFO L354 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 132 treesize of output 72 [2025-04-13 17:55:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:55,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:55:55,732 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:55:55,732 INFO L354 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 53 treesize of output 29 [2025-04-13 17:55:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:55:55,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71474534] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:55:55,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:55:55,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2025-04-13 17:55:55,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802613447] [2025-04-13 17:55:55,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:55:55,803 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:55:55,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:55:55,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:55:55,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:55:55,803 INFO L87 Difference]: Start difference. First operand 445 states and 1280 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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) [2025-04-13 17:56:01,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:01,034 INFO L93 Difference]: Finished difference Result 688 states and 1830 transitions. [2025-04-13 17:56:01,034 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-04-13 17:56:01,035 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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) Word has length 21 [2025-04-13 17:56:01,035 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:01,036 INFO L225 Difference]: With dead ends: 688 [2025-04-13 17:56:01,036 INFO L226 Difference]: Without dead ends: 672 [2025-04-13 17:56:01,037 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=750, Invalid=3156, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 17:56:01,037 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 199 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:01,037 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 0 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:56:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2025-04-13 17:56:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 441. [2025-04-13 17:56:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 2.8636363636363638) internal successors, (1260), 440 states have internal predecessors, (1260), 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) [2025-04-13 17:56:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1260 transitions. [2025-04-13 17:56:02,077 INFO L79 Accepts]: Start accepts. Automaton has 441 states and 1260 transitions. Word has length 21 [2025-04-13 17:56:02,078 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:02,078 INFO L485 AbstractCegarLoop]: Abstraction has 441 states and 1260 transitions. [2025-04-13 17:56:02,078 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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) [2025-04-13 17:56:02,078 INFO L278 IsEmpty]: Start isEmpty. Operand 441 states and 1260 transitions. [2025-04-13 17:56:02,078 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:02,078 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:02,078 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:02,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2025-04-13 17:56:02,278 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:02,279 INFO L403 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:02,279 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash 344440772, now seen corresponding path program 108 times [2025-04-13 17:56:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:02,279 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399609868] [2025-04-13 17:56:02,279 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:56:02,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:02,293 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:56:02,308 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:02,308 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 17:56:02,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:56:02,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:02,649 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399609868] [2025-04-13 17:56:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399609868] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:02,649 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636271587] [2025-04-13 17:56:02,649 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:56:02,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:02,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:02,651 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:02,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2025-04-13 17:56:02,859 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:56:02,880 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:02,881 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 17:56:02,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:02,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 17:56:02,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:02,979 INFO L354 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 112 treesize of output 72 [2025-04-13 17:56:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:56:02,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:03,083 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:03,083 INFO L354 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 53 treesize of output 29 [2025-04-13 17:56:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:03,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636271587] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:03,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:03,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 22 [2025-04-13 17:56:03,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26824569] [2025-04-13 17:56:03,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:03,150 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:56:03,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:03,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:56:03,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:56:03,150 INFO L87 Difference]: Start difference. First operand 441 states and 1260 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:56:06,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:06,402 INFO L93 Difference]: Finished difference Result 573 states and 1488 transitions. [2025-04-13 17:56:06,402 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 17:56:06,402 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) Word has length 21 [2025-04-13 17:56:06,402 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:06,404 INFO L225 Difference]: With dead ends: 573 [2025-04-13 17:56:06,404 INFO L226 Difference]: Without dead ends: 566 [2025-04-13 17:56:06,404 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=1631, Unknown=0, NotChecked=0, Total=1892 [2025-04-13 17:56:06,404 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:06,404 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 0 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:56:06,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-04-13 17:56:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 441. [2025-04-13 17:56:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 2.859090909090909) internal successors, (1258), 440 states have internal predecessors, (1258), 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) [2025-04-13 17:56:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1258 transitions. [2025-04-13 17:56:07,429 INFO L79 Accepts]: Start accepts. Automaton has 441 states and 1258 transitions. Word has length 21 [2025-04-13 17:56:07,429 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:07,430 INFO L485 AbstractCegarLoop]: Abstraction has 441 states and 1258 transitions. [2025-04-13 17:56:07,430 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:56:07,430 INFO L278 IsEmpty]: Start isEmpty. Operand 441 states and 1258 transitions. [2025-04-13 17:56:07,430 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:07,430 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:07,430 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:07,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2025-04-13 17:56:07,630 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:07,631 INFO L403 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:07,631 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 430328225, now seen corresponding path program 109 times [2025-04-13 17:56:07,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:07,631 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363576891] [2025-04-13 17:56:07,631 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:56:07,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:07,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:56:07,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:07,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:56:07,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:56:07,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:07,956 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363576891] [2025-04-13 17:56:07,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363576891] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:07,956 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513324721] [2025-04-13 17:56:07,956 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:56:07,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:07,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:07,958 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:07,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2025-04-13 17:56:08,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:56:08,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:08,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:56:08,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:08,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:56:08,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:08,323 INFO L354 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 107 treesize of output 59 [2025-04-13 17:56:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:08,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:08,445 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:08,445 INFO L354 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 119 treesize of output 63 [2025-04-13 17:56:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:08,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513324721] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:08,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:08,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:56:08,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404986211] [2025-04-13 17:56:08,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:08,527 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:56:08,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:08,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:56:08,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:56:08,527 INFO L87 Difference]: Start difference. First operand 441 states and 1258 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:56:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:11,253 INFO L93 Difference]: Finished difference Result 529 states and 1419 transitions. [2025-04-13 17:56:11,253 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 17:56:11,253 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) Word has length 21 [2025-04-13 17:56:11,253 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:11,254 INFO L225 Difference]: With dead ends: 529 [2025-04-13 17:56:11,254 INFO L226 Difference]: Without dead ends: 506 [2025-04-13 17:56:11,255 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 17:56:11,255 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:11,255 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:56:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2025-04-13 17:56:12,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 441. [2025-04-13 17:56:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 2.85) internal successors, (1254), 440 states have internal predecessors, (1254), 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) [2025-04-13 17:56:12,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1254 transitions. [2025-04-13 17:56:12,286 INFO L79 Accepts]: Start accepts. Automaton has 441 states and 1254 transitions. Word has length 21 [2025-04-13 17:56:12,286 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:12,286 INFO L485 AbstractCegarLoop]: Abstraction has 441 states and 1254 transitions. [2025-04-13 17:56:12,286 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:56:12,286 INFO L278 IsEmpty]: Start isEmpty. Operand 441 states and 1254 transitions. [2025-04-13 17:56:12,287 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:12,287 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:12,287 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:12,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2025-04-13 17:56:12,487 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:12,487 INFO L403 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:12,487 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:12,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1060334519, now seen corresponding path program 110 times [2025-04-13 17:56:12,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:12,488 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329600692] [2025-04-13 17:56:12,488 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:56:12,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:12,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:56:12,505 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:12,505 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:56:12,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:12,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:12,707 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329600692] [2025-04-13 17:56:12,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329600692] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:12,707 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194854520] [2025-04-13 17:56:12,707 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:56:12,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:12,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:12,709 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:12,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2025-04-13 17:56:12,925 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:56:12,946 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:12,946 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:56:12,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:12,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:56:12,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:13,078 INFO L354 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 61 treesize of output 37 [2025-04-13 17:56:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:13,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:13,158 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:13,158 INFO L354 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 117 treesize of output 61 [2025-04-13 17:56:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194854520] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:13,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:13,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2025-04-13 17:56:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131009511] [2025-04-13 17:56:13,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:13,234 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:56:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:13,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:56:13,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:56:13,234 INFO L87 Difference]: Start difference. First operand 441 states and 1254 transitions. Second operand has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 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) [2025-04-13 17:56:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:16,071 INFO L93 Difference]: Finished difference Result 553 states and 1469 transitions. [2025-04-13 17:56:16,071 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 17:56:16,071 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 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) Word has length 21 [2025-04-13 17:56:16,071 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:16,073 INFO L225 Difference]: With dead ends: 553 [2025-04-13 17:56:16,073 INFO L226 Difference]: Without dead ends: 505 [2025-04-13 17:56:16,073 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=1685, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 17:56:16,073 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 165 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:16,073 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 0 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:56:16,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2025-04-13 17:56:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 416. [2025-04-13 17:56:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 2.8795180722891565) internal successors, (1195), 415 states have internal predecessors, (1195), 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) [2025-04-13 17:56:17,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1195 transitions. [2025-04-13 17:56:17,047 INFO L79 Accepts]: Start accepts. Automaton has 416 states and 1195 transitions. Word has length 21 [2025-04-13 17:56:17,047 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:17,047 INFO L485 AbstractCegarLoop]: Abstraction has 416 states and 1195 transitions. [2025-04-13 17:56:17,047 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.88) internal successors, (47), 25 states have internal predecessors, (47), 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) [2025-04-13 17:56:17,047 INFO L278 IsEmpty]: Start isEmpty. Operand 416 states and 1195 transitions. [2025-04-13 17:56:17,047 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:17,047 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:17,047 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:17,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2025-04-13 17:56:17,248 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2025-04-13 17:56:17,248 INFO L403 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:17,248 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1683117497, now seen corresponding path program 111 times [2025-04-13 17:56:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:17,248 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974537183] [2025-04-13 17:56:17,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:56:17,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:17,258 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:56:17,275 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:17,275 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:56:17,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:17,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:17,492 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974537183] [2025-04-13 17:56:17,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974537183] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:17,492 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339095608] [2025-04-13 17:56:17,492 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:56:17,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:17,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:17,494 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:17,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2025-04-13 17:56:17,720 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:56:17,743 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:17,743 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:56:17,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:17,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:56:17,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:17,868 INFO L354 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 91 treesize of output 59 [2025-04-13 17:56:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:56:17,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:17,972 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:17,973 INFO L354 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 117 treesize of output 61 [2025-04-13 17:56:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:18,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339095608] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:18,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:18,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 26 [2025-04-13 17:56:18,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558768243] [2025-04-13 17:56:18,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:18,047 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:56:18,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:18,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:56:18,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:56:18,047 INFO L87 Difference]: Start difference. First operand 416 states and 1195 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 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) [2025-04-13 17:56:20,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:20,899 INFO L93 Difference]: Finished difference Result 502 states and 1340 transitions. [2025-04-13 17:56:20,899 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 17:56:20,899 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 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) Word has length 21 [2025-04-13 17:56:20,899 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:20,901 INFO L225 Difference]: With dead ends: 502 [2025-04-13 17:56:20,901 INFO L226 Difference]: Without dead ends: 491 [2025-04-13 17:56:20,901 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=2084, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 17:56:20,901 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 132 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:20,901 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 0 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:56:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2025-04-13 17:56:21,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 414. [2025-04-13 17:56:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.876513317191283) internal successors, (1188), 413 states have internal predecessors, (1188), 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) [2025-04-13 17:56:21,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1188 transitions. [2025-04-13 17:56:21,857 INFO L79 Accepts]: Start accepts. Automaton has 414 states and 1188 transitions. Word has length 21 [2025-04-13 17:56:21,857 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:21,857 INFO L485 AbstractCegarLoop]: Abstraction has 414 states and 1188 transitions. [2025-04-13 17:56:21,857 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 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) [2025-04-13 17:56:21,857 INFO L278 IsEmpty]: Start isEmpty. Operand 414 states and 1188 transitions. [2025-04-13 17:56:21,858 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:21,858 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:21,858 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:21,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2025-04-13 17:56:22,058 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2025-04-13 17:56:22,058 INFO L403 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:22,059 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:22,059 INFO L85 PathProgramCache]: Analyzing trace with hash 487194334, now seen corresponding path program 112 times [2025-04-13 17:56:22,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:22,059 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508868385] [2025-04-13 17:56:22,059 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:56:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:22,066 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:56:22,072 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:22,072 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:56:22,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:22,219 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:22,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:22,219 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508868385] [2025-04-13 17:56:22,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508868385] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:22,220 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727671286] [2025-04-13 17:56:22,220 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:56:22,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:22,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:22,221 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:22,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2025-04-13 17:56:22,433 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:56:22,453 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:22,453 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:56:22,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:22,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 17:56:22,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:56:22,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:22,603 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:22,603 INFO L354 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 51 treesize of output 27 [2025-04-13 17:56:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:22,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727671286] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:22,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:22,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2025-04-13 17:56:22,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468723971] [2025-04-13 17:56:22,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:22,670 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:56:22,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:22,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:56:22,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:56:22,670 INFO L87 Difference]: Start difference. First operand 414 states and 1188 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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) [2025-04-13 17:56:25,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:25,321 INFO L93 Difference]: Finished difference Result 513 states and 1405 transitions. [2025-04-13 17:56:25,321 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 17:56:25,321 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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) Word has length 21 [2025-04-13 17:56:25,321 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:25,322 INFO L225 Difference]: With dead ends: 513 [2025-04-13 17:56:25,322 INFO L226 Difference]: Without dead ends: 506 [2025-04-13 17:56:25,322 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2025-04-13 17:56:25,323 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 92 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:25,323 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 0 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:56:25,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2025-04-13 17:56:26,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 416. [2025-04-13 17:56:26,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 2.8843373493975903) internal successors, (1197), 415 states have internal predecessors, (1197), 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) [2025-04-13 17:56:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1197 transitions. [2025-04-13 17:56:26,289 INFO L79 Accepts]: Start accepts. Automaton has 416 states and 1197 transitions. Word has length 21 [2025-04-13 17:56:26,289 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:26,289 INFO L485 AbstractCegarLoop]: Abstraction has 416 states and 1197 transitions. [2025-04-13 17:56:26,289 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 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) [2025-04-13 17:56:26,289 INFO L278 IsEmpty]: Start isEmpty. Operand 416 states and 1197 transitions. [2025-04-13 17:56:26,290 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:26,290 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:26,290 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:26,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2025-04-13 17:56:26,490 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2025-04-13 17:56:26,490 INFO L403 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:26,490 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1598190097, now seen corresponding path program 113 times [2025-04-13 17:56:26,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:26,491 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421357464] [2025-04-13 17:56:26,491 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:56:26,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:26,498 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:56:26,505 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:26,505 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:56:26,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:56:26,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:26,734 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421357464] [2025-04-13 17:56:26,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421357464] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:26,734 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585294685] [2025-04-13 17:56:26,734 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:56:26,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:26,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:26,735 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:26,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2025-04-13 17:56:26,957 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:56:26,989 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:26,989 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:56:26,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:26,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 17:56:26,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:27,077 INFO L354 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 73 treesize of output 37 [2025-04-13 17:56:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:56:27,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:27,149 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:27,150 INFO L354 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 87 treesize of output 47 [2025-04-13 17:56:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585294685] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:27,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 24 [2025-04-13 17:56:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890487406] [2025-04-13 17:56:27,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:27,229 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 17:56:27,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:27,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 17:56:27,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:56:27,230 INFO L87 Difference]: Start difference. First operand 416 states and 1197 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 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) [2025-04-13 17:56:29,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:29,944 INFO L93 Difference]: Finished difference Result 560 states and 1527 transitions. [2025-04-13 17:56:29,945 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 17:56:29,945 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 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) Word has length 21 [2025-04-13 17:56:29,945 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:29,946 INFO L225 Difference]: With dead ends: 560 [2025-04-13 17:56:29,946 INFO L226 Difference]: Without dead ends: 486 [2025-04-13 17:56:29,947 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=1345, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 17:56:29,947 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 222 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:29,947 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 0 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:56:29,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2025-04-13 17:56:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 408. [2025-04-13 17:56:31,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 2.808353808353808) internal successors, (1143), 407 states have internal predecessors, (1143), 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) [2025-04-13 17:56:31,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1143 transitions. [2025-04-13 17:56:31,019 INFO L79 Accepts]: Start accepts. Automaton has 408 states and 1143 transitions. Word has length 21 [2025-04-13 17:56:31,019 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:31,019 INFO L485 AbstractCegarLoop]: Abstraction has 408 states and 1143 transitions. [2025-04-13 17:56:31,019 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 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) [2025-04-13 17:56:31,019 INFO L278 IsEmpty]: Start isEmpty. Operand 408 states and 1143 transitions. [2025-04-13 17:56:31,019 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:31,019 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:31,020 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:31,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2025-04-13 17:56:31,220 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2025-04-13 17:56:31,220 INFO L403 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:31,220 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1067740932, now seen corresponding path program 114 times [2025-04-13 17:56:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:31,220 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626084479] [2025-04-13 17:56:31,220 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:56:31,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:31,228 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:56:31,237 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:31,238 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:56:31,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:56:31,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:31,481 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626084479] [2025-04-13 17:56:31,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626084479] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:31,481 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602094563] [2025-04-13 17:56:31,481 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:56:31,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:31,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:31,483 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:31,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2025-04-13 17:56:31,699 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:56:31,718 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:31,719 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:56:31,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:31,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 17:56:31,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:31,728 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:56:31,736 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:56:31,820 INFO L354 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 112 treesize of output 72 [2025-04-13 17:56:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:56:31,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:32,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602094563] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:32,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:32,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 9] total 25 [2025-04-13 17:56:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931010246] [2025-04-13 17:56:32,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:32,003 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:56:32,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:32,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:56:32,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:56:32,004 INFO L87 Difference]: Start difference. First operand 408 states and 1143 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 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) [2025-04-13 17:56:35,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:35,590 INFO L93 Difference]: Finished difference Result 556 states and 1381 transitions. [2025-04-13 17:56:35,590 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 17:56:35,590 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 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) Word has length 21 [2025-04-13 17:56:35,590 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:35,592 INFO L225 Difference]: With dead ends: 556 [2025-04-13 17:56:35,592 INFO L226 Difference]: Without dead ends: 547 [2025-04-13 17:56:35,592 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=323, Invalid=1747, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 17:56:35,592 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:35,592 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:56:35,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2025-04-13 17:56:36,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 408. [2025-04-13 17:56:36,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 2.8034398034398036) internal successors, (1141), 407 states have internal predecessors, (1141), 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) [2025-04-13 17:56:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1141 transitions. [2025-04-13 17:56:36,676 INFO L79 Accepts]: Start accepts. Automaton has 408 states and 1141 transitions. Word has length 21 [2025-04-13 17:56:36,676 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:36,676 INFO L485 AbstractCegarLoop]: Abstraction has 408 states and 1141 transitions. [2025-04-13 17:56:36,676 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 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) [2025-04-13 17:56:36,676 INFO L278 IsEmpty]: Start isEmpty. Operand 408 states and 1141 transitions. [2025-04-13 17:56:36,677 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:36,677 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:36,677 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:36,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2025-04-13 17:56:36,877 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2025-04-13 17:56:36,877 INFO L403 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:36,878 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1178563452, now seen corresponding path program 115 times [2025-04-13 17:56:36,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:36,878 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369330309] [2025-04-13 17:56:36,878 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:56:36,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:36,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:56:36,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:36,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:56:36,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:56:37,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:37,171 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369330309] [2025-04-13 17:56:37,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369330309] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:37,171 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947985123] [2025-04-13 17:56:37,171 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:56:37,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:37,173 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:37,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2025-04-13 17:56:37,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:56:37,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:37,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:56:37,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:37,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:56:37,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:37,483 INFO L354 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 107 treesize of output 59 [2025-04-13 17:56:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:37,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:37,576 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:37,576 INFO L354 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 51 treesize of output 27 [2025-04-13 17:56:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:37,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947985123] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:37,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:37,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:56:37,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478885496] [2025-04-13 17:56:37,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:37,647 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:56:37,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:37,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:56:37,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:56:37,647 INFO L87 Difference]: Start difference. First operand 408 states and 1141 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:56:40,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:40,565 INFO L93 Difference]: Finished difference Result 509 states and 1304 transitions. [2025-04-13 17:56:40,565 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 17:56:40,565 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) Word has length 21 [2025-04-13 17:56:40,565 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:40,567 INFO L225 Difference]: With dead ends: 509 [2025-04-13 17:56:40,567 INFO L226 Difference]: Without dead ends: 502 [2025-04-13 17:56:40,567 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=259, Invalid=1721, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 17:56:40,567 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:40,567 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 0 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:56:40,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2025-04-13 17:56:41,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 406. [2025-04-13 17:56:41,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 2.8) internal successors, (1134), 405 states have internal predecessors, (1134), 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) [2025-04-13 17:56:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1134 transitions. [2025-04-13 17:56:41,627 INFO L79 Accepts]: Start accepts. Automaton has 406 states and 1134 transitions. Word has length 21 [2025-04-13 17:56:41,627 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:41,627 INFO L485 AbstractCegarLoop]: Abstraction has 406 states and 1134 transitions. [2025-04-13 17:56:41,627 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:56:41,627 INFO L278 IsEmpty]: Start isEmpty. Operand 406 states and 1134 transitions. [2025-04-13 17:56:41,627 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:41,627 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:41,627 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:41,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2025-04-13 17:56:41,828 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:41,828 INFO L403 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:41,828 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:41,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1145261919, now seen corresponding path program 116 times [2025-04-13 17:56:41,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:41,828 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903097937] [2025-04-13 17:56:41,828 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:56:41,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:41,836 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:56:41,845 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:41,845 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:56:41,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:56:42,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:42,123 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903097937] [2025-04-13 17:56:42,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903097937] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:42,123 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443171291] [2025-04-13 17:56:42,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:56:42,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:42,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:42,125 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:42,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2025-04-13 17:56:42,349 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:56:42,368 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:42,368 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:56:42,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:42,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:56:42,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:42,448 INFO L354 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 91 treesize of output 59 [2025-04-13 17:56:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:56:42,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:42,534 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:42,534 INFO L354 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 117 treesize of output 61 [2025-04-13 17:56:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:42,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443171291] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:42,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:42,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 25 [2025-04-13 17:56:42,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813662842] [2025-04-13 17:56:42,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:42,610 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:56:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:42,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:56:42,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:56:42,610 INFO L87 Difference]: Start difference. First operand 406 states and 1134 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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) [2025-04-13 17:56:45,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:45,813 INFO L93 Difference]: Finished difference Result 526 states and 1331 transitions. [2025-04-13 17:56:45,813 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 17:56:45,813 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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) Word has length 21 [2025-04-13 17:56:45,813 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:45,815 INFO L225 Difference]: With dead ends: 526 [2025-04-13 17:56:45,815 INFO L226 Difference]: Without dead ends: 515 [2025-04-13 17:56:45,815 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=443, Invalid=2527, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 17:56:45,816 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 187 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:45,816 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 0 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:56:45,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2025-04-13 17:56:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 406. [2025-04-13 17:56:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 2.7950617283950616) internal successors, (1132), 405 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) [2025-04-13 17:56:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1132 transitions. [2025-04-13 17:56:46,841 INFO L79 Accepts]: Start accepts. Automaton has 406 states and 1132 transitions. Word has length 21 [2025-04-13 17:56:46,841 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:46,841 INFO L485 AbstractCegarLoop]: Abstraction has 406 states and 1132 transitions. [2025-04-13 17:56:46,841 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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) [2025-04-13 17:56:46,841 INFO L278 IsEmpty]: Start isEmpty. Operand 406 states and 1132 transitions. [2025-04-13 17:56:46,842 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:46,842 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:46,842 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:46,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2025-04-13 17:56:47,042 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:47,042 INFO L403 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:47,043 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1092675999, now seen corresponding path program 117 times [2025-04-13 17:56:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:47,043 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153807091] [2025-04-13 17:56:47,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:56:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:47,052 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:56:47,065 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:47,065 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 17:56:47,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:56:47,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:47,388 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153807091] [2025-04-13 17:56:47,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153807091] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:47,388 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362116933] [2025-04-13 17:56:47,388 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:56:47,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:47,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:47,390 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:47,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2025-04-13 17:56:47,622 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:56:47,644 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:47,644 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 17:56:47,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:47,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 17:56:47,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:47,734 INFO L354 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 112 treesize of output 72 [2025-04-13 17:56:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:56:47,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:47,822 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:47,823 INFO L354 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 117 treesize of output 61 [2025-04-13 17:56:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:47,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362116933] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:47,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:47,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 24 [2025-04-13 17:56:47,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109668547] [2025-04-13 17:56:47,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:47,920 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 17:56:47,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:47,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 17:56:47,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:56:47,920 INFO L87 Difference]: Start difference. First operand 406 states and 1132 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2025-04-13 17:56:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:50,441 INFO L93 Difference]: Finished difference Result 484 states and 1255 transitions. [2025-04-13 17:56:50,442 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 17:56:50,442 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:56:50,442 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:50,444 INFO L225 Difference]: With dead ends: 484 [2025-04-13 17:56:50,444 INFO L226 Difference]: Without dead ends: 476 [2025-04-13 17:56:50,444 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=1347, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 17:56:50,444 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:50,444 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:56:50,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2025-04-13 17:56:51,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 402. [2025-04-13 17:56:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.7930174563591024) internal successors, (1120), 401 states have internal predecessors, (1120), 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) [2025-04-13 17:56:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1120 transitions. [2025-04-13 17:56:51,508 INFO L79 Accepts]: Start accepts. Automaton has 402 states and 1120 transitions. Word has length 21 [2025-04-13 17:56:51,508 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:51,508 INFO L485 AbstractCegarLoop]: Abstraction has 402 states and 1120 transitions. [2025-04-13 17:56:51,508 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2025-04-13 17:56:51,508 INFO L278 IsEmpty]: Start isEmpty. Operand 402 states and 1120 transitions. [2025-04-13 17:56:51,509 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:51,509 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:51,509 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:51,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2025-04-13 17:56:51,709 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2025-04-13 17:56:51,709 INFO L403 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:51,709 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1384675320, now seen corresponding path program 118 times [2025-04-13 17:56:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:51,710 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22928460] [2025-04-13 17:56:51,710 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:56:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:51,718 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:56:51,727 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:51,727 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:56:51,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:56:52,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:52,038 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22928460] [2025-04-13 17:56:52,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22928460] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:52,039 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692697668] [2025-04-13 17:56:52,039 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:56:52,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:52,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:52,041 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:52,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2025-04-13 17:56:52,268 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:56:52,289 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:52,289 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:56:52,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:52,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:56:52,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:52,443 INFO L354 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 107 treesize of output 59 [2025-04-13 17:56:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:56:52,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:52,532 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:52,533 INFO L354 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 117 treesize of output 61 [2025-04-13 17:56:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:52,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692697668] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:52,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:52,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 26 [2025-04-13 17:56:52,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825395080] [2025-04-13 17:56:52,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:52,642 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:56:52,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:52,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:56:52,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:56:52,643 INFO L87 Difference]: Start difference. First operand 402 states and 1120 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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) [2025-04-13 17:56:55,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:56:55,609 INFO L93 Difference]: Finished difference Result 504 states and 1298 transitions. [2025-04-13 17:56:55,609 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 17:56:55,609 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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) Word has length 21 [2025-04-13 17:56:55,609 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:56:55,611 INFO L225 Difference]: With dead ends: 504 [2025-04-13 17:56:55,611 INFO L226 Difference]: Without dead ends: 499 [2025-04-13 17:56:55,611 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=1482, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 17:56:55,611 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:56:55,611 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:56:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2025-04-13 17:56:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 402. [2025-04-13 17:56:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.7930174563591024) internal successors, (1120), 401 states have internal predecessors, (1120), 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) [2025-04-13 17:56:56,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1120 transitions. [2025-04-13 17:56:56,696 INFO L79 Accepts]: Start accepts. Automaton has 402 states and 1120 transitions. Word has length 21 [2025-04-13 17:56:56,697 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:56:56,697 INFO L485 AbstractCegarLoop]: Abstraction has 402 states and 1120 transitions. [2025-04-13 17:56:56,697 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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) [2025-04-13 17:56:56,697 INFO L278 IsEmpty]: Start isEmpty. Operand 402 states and 1120 transitions. [2025-04-13 17:56:56,697 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:56:56,697 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:56:56,697 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:56:56,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2025-04-13 17:56:56,897 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:56,898 INFO L403 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:56:56,898 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:56:56,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1470562773, now seen corresponding path program 119 times [2025-04-13 17:56:56,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:56:56,898 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237459053] [2025-04-13 17:56:56,898 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:56:56,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:56:56,907 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:56:56,914 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:56,914 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 17:56:56,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:57,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:56:57,097 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237459053] [2025-04-13 17:56:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237459053] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:56:57,098 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263451734] [2025-04-13 17:56:57,098 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:56:57,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:56:57,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:56:57,102 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:56:57,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2025-04-13 17:56:57,324 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:56:57,350 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:56:57,350 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 17:56:57,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:56:57,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 17:56:57,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:56:57,417 INFO L354 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 132 treesize of output 72 [2025-04-13 17:56:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:57,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:56:57,484 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:56:57,485 INFO L354 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 51 treesize of output 27 [2025-04-13 17:56:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:56:57,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263451734] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:56:57,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:56:57,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 17:56:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524253696] [2025-04-13 17:56:57,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:56:57,547 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:56:57,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:56:57,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:56:57,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:56:57,547 INFO L87 Difference]: Start difference. First operand 402 states and 1120 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 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) [2025-04-13 17:57:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:00,001 INFO L93 Difference]: Finished difference Result 474 states and 1237 transitions. [2025-04-13 17:57:00,002 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 17:57:00,002 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 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) Word has length 21 [2025-04-13 17:57:00,002 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:00,003 INFO L225 Difference]: With dead ends: 474 [2025-04-13 17:57:00,003 INFO L226 Difference]: Without dead ends: 466 [2025-04-13 17:57:00,003 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 17:57:00,004 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:00,004 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:57:00,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2025-04-13 17:57:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 404. [2025-04-13 17:57:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 2.7866004962779156) internal successors, (1123), 403 states have internal predecessors, (1123), 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) [2025-04-13 17:57:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1123 transitions. [2025-04-13 17:57:01,030 INFO L79 Accepts]: Start accepts. Automaton has 404 states and 1123 transitions. Word has length 21 [2025-04-13 17:57:01,030 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:01,030 INFO L485 AbstractCegarLoop]: Abstraction has 404 states and 1123 transitions. [2025-04-13 17:57:01,030 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 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) [2025-04-13 17:57:01,030 INFO L278 IsEmpty]: Start isEmpty. Operand 404 states and 1123 transitions. [2025-04-13 17:57:01,031 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:01,031 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:01,031 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:01,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2025-04-13 17:57:01,231 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:01,231 INFO L403 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:01,232 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:01,232 INFO L85 PathProgramCache]: Analyzing trace with hash -247780933, now seen corresponding path program 120 times [2025-04-13 17:57:01,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:01,232 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570016112] [2025-04-13 17:57:01,232 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:57:01,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:01,239 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:57:01,250 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:01,250 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 17:57:01,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:01,437 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570016112] [2025-04-13 17:57:01,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570016112] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:01,437 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443613759] [2025-04-13 17:57:01,437 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:57:01,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:01,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:01,439 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:01,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2025-04-13 17:57:01,673 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:57:01,700 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:01,700 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 17:57:01,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:01,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:57:01,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:01,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:01,876 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:01,876 INFO L354 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 51 treesize of output 27 [2025-04-13 17:57:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:01,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443613759] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:01,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:01,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2025-04-13 17:57:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783197307] [2025-04-13 17:57:01,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:01,941 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 17:57:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:01,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 17:57:01,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:57:01,941 INFO L87 Difference]: Start difference. First operand 404 states and 1123 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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) [2025-04-13 17:57:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:04,455 INFO L93 Difference]: Finished difference Result 466 states and 1226 transitions. [2025-04-13 17:57:04,455 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 17:57:04,455 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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) Word has length 21 [2025-04-13 17:57:04,455 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:04,457 INFO L225 Difference]: With dead ends: 466 [2025-04-13 17:57:04,457 INFO L226 Difference]: Without dead ends: 458 [2025-04-13 17:57:04,457 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 17:57:04,457 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:04,457 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:57:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2025-04-13 17:57:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 404. [2025-04-13 17:57:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 2.7866004962779156) internal successors, (1123), 403 states have internal predecessors, (1123), 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) [2025-04-13 17:57:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1123 transitions. [2025-04-13 17:57:05,558 INFO L79 Accepts]: Start accepts. Automaton has 404 states and 1123 transitions. Word has length 21 [2025-04-13 17:57:05,558 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:05,558 INFO L485 AbstractCegarLoop]: Abstraction has 404 states and 1123 transitions. [2025-04-13 17:57:05,558 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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) [2025-04-13 17:57:05,558 INFO L278 IsEmpty]: Start isEmpty. Operand 404 states and 1123 transitions. [2025-04-13 17:57:05,558 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:05,559 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:05,559 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:05,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2025-04-13 17:57:05,759 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:05,759 INFO L403 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:05,759 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash -676184482, now seen corresponding path program 121 times [2025-04-13 17:57:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:05,759 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370578266] [2025-04-13 17:57:05,759 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:57:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:05,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:57:05,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:05,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:57:05,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:57:06,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:06,112 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370578266] [2025-04-13 17:57:06,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370578266] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:06,112 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147271287] [2025-04-13 17:57:06,112 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:57:06,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:06,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:06,114 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:06,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2025-04-13 17:57:06,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:57:06,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:06,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:57:06,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:06,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:57:06,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:06,461 INFO L354 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 132 treesize of output 72 [2025-04-13 17:57:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:06,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:06,558 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:06,558 INFO L354 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 119 treesize of output 63 [2025-04-13 17:57:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:06,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147271287] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:06,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:06,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:57:06,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288487945] [2025-04-13 17:57:06,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:06,614 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:57:06,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:06,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:57:06,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:57:06,614 INFO L87 Difference]: Start difference. First operand 404 states and 1123 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:57:08,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:08,743 INFO L93 Difference]: Finished difference Result 439 states and 1174 transitions. [2025-04-13 17:57:08,744 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 17:57:08,744 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) Word has length 21 [2025-04-13 17:57:08,744 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:08,745 INFO L225 Difference]: With dead ends: 439 [2025-04-13 17:57:08,745 INFO L226 Difference]: Without dead ends: 434 [2025-04-13 17:57:08,745 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 17:57:08,745 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 98 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:08,745 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 0 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:57:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2025-04-13 17:57:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 399. [2025-04-13 17:57:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 2.7889447236180906) internal successors, (1110), 398 states have internal predecessors, (1110), 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) [2025-04-13 17:57:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1110 transitions. [2025-04-13 17:57:09,752 INFO L79 Accepts]: Start accepts. Automaton has 399 states and 1110 transitions. Word has length 21 [2025-04-13 17:57:09,752 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:09,752 INFO L485 AbstractCegarLoop]: Abstraction has 399 states and 1110 transitions. [2025-04-13 17:57:09,752 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-04-13 17:57:09,752 INFO L278 IsEmpty]: Start isEmpty. Operand 399 states and 1110 transitions. [2025-04-13 17:57:09,752 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:09,752 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:09,752 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:09,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2025-04-13 17:57:09,952 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:09,953 INFO L403 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:09,953 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash -590297029, now seen corresponding path program 122 times [2025-04-13 17:57:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:09,953 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211109381] [2025-04-13 17:57:09,953 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:57:09,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:09,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:57:09,969 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:09,969 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:57:09,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:57:10,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:10,237 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211109381] [2025-04-13 17:57:10,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211109381] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:10,237 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012353985] [2025-04-13 17:57:10,237 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:57:10,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:10,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:10,239 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:10,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2025-04-13 17:57:10,465 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:57:10,486 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:10,486 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:57:10,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:10,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 17:57:10,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:10,580 INFO L354 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 91 treesize of output 59 [2025-04-13 17:57:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:57:10,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:10,675 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:10,676 INFO L354 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 53 treesize of output 29 [2025-04-13 17:57:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:10,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012353985] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:10,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:10,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 22 [2025-04-13 17:57:10,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860329399] [2025-04-13 17:57:10,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:10,727 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:57:10,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:10,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:57:10,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:57:10,728 INFO L87 Difference]: Start difference. First operand 399 states and 1110 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:57:13,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:13,247 INFO L93 Difference]: Finished difference Result 462 states and 1211 transitions. [2025-04-13 17:57:13,247 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 17:57:13,247 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) Word has length 21 [2025-04-13 17:57:13,247 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:13,249 INFO L225 Difference]: With dead ends: 462 [2025-04-13 17:57:13,249 INFO L226 Difference]: Without dead ends: 454 [2025-04-13 17:57:13,249 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=1204, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 17:57:13,249 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 107 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:13,249 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 0 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:57:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2025-04-13 17:57:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 397. [2025-04-13 17:57:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 2.79040404040404) internal successors, (1105), 396 states have internal predecessors, (1105), 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) [2025-04-13 17:57:14,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1105 transitions. [2025-04-13 17:57:14,290 INFO L79 Accepts]: Start accepts. Automaton has 397 states and 1105 transitions. Word has length 21 [2025-04-13 17:57:14,290 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:14,290 INFO L485 AbstractCegarLoop]: Abstraction has 397 states and 1105 transitions. [2025-04-13 17:57:14,290 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:57:14,290 INFO L278 IsEmpty]: Start isEmpty. Operand 397 states and 1105 transitions. [2025-04-13 17:57:14,290 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:14,290 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:14,291 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:14,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2025-04-13 17:57:14,491 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2025-04-13 17:57:14,491 INFO L403 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:14,491 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1986326561, now seen corresponding path program 123 times [2025-04-13 17:57:14,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:14,491 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793970263] [2025-04-13 17:57:14,491 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:57:14,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:14,499 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:57:14,512 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:14,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 17:57:14,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:57:14,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:14,874 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793970263] [2025-04-13 17:57:14,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793970263] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:14,874 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085941067] [2025-04-13 17:57:14,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:57:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:14,876 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:14,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2025-04-13 17:57:15,111 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:57:15,174 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:15,174 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 17:57:15,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:15,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 17:57:15,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:15,199 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:57:15,212 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:57:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:57:15,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:15,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085941067] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:15,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:15,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 9] total 27 [2025-04-13 17:57:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152739731] [2025-04-13 17:57:15,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:15,477 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 17:57:15,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:15,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 17:57:15,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:57:15,477 INFO L87 Difference]: Start difference. First operand 397 states and 1105 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 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) [2025-04-13 17:57:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:18,106 INFO L93 Difference]: Finished difference Result 454 states and 1200 transitions. [2025-04-13 17:57:18,106 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 17:57:18,106 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 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) Word has length 21 [2025-04-13 17:57:18,106 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:18,108 INFO L225 Difference]: With dead ends: 454 [2025-04-13 17:57:18,108 INFO L226 Difference]: Without dead ends: 446 [2025-04-13 17:57:18,108 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=1420, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 17:57:18,109 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:18,109 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:57:18,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2025-04-13 17:57:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 397. [2025-04-13 17:57:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 2.79040404040404) internal successors, (1105), 396 states have internal predecessors, (1105), 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) [2025-04-13 17:57:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1105 transitions. [2025-04-13 17:57:19,242 INFO L79 Accepts]: Start accepts. Automaton has 397 states and 1105 transitions. Word has length 21 [2025-04-13 17:57:19,242 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:19,242 INFO L485 AbstractCegarLoop]: Abstraction has 397 states and 1105 transitions. [2025-04-13 17:57:19,242 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 27 states have internal predecessors, (47), 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) [2025-04-13 17:57:19,242 INFO L278 IsEmpty]: Start isEmpty. Operand 397 states and 1105 transitions. [2025-04-13 17:57:19,243 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:19,243 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:19,243 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:19,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2025-04-13 17:57:19,443 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2025-04-13 17:57:19,443 INFO L403 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:19,444 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash 257279227, now seen corresponding path program 124 times [2025-04-13 17:57:19,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:19,444 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249432985] [2025-04-13 17:57:19,444 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:57:19,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:19,455 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:57:19,464 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:19,464 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:57:19,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:57:19,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:19,779 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249432985] [2025-04-13 17:57:19,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249432985] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:19,780 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554130065] [2025-04-13 17:57:19,780 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:57:19,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:19,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:19,781 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:19,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2025-04-13 17:57:20,020 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:57:20,042 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:20,042 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:57:20,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:20,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 17:57:20,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:57:20,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:20,215 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:20,215 INFO L354 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 53 treesize of output 29 [2025-04-13 17:57:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:20,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554130065] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:20,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:20,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 21 [2025-04-13 17:57:20,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685185569] [2025-04-13 17:57:20,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:20,269 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:57:20,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:20,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:57:20,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:57:20,270 INFO L87 Difference]: Start difference. First operand 397 states and 1105 transitions. Second operand has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 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) [2025-04-13 17:57:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:22,500 INFO L93 Difference]: Finished difference Result 446 states and 1179 transitions. [2025-04-13 17:57:22,500 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 17:57:22,500 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 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) Word has length 21 [2025-04-13 17:57:22,500 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:22,502 INFO L225 Difference]: With dead ends: 446 [2025-04-13 17:57:22,502 INFO L226 Difference]: Without dead ends: 438 [2025-04-13 17:57:22,502 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:57:22,502 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:22,502 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:57:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2025-04-13 17:57:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 397. [2025-04-13 17:57:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 2.79040404040404) internal successors, (1105), 396 states have internal predecessors, (1105), 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) [2025-04-13 17:57:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1105 transitions. [2025-04-13 17:57:23,557 INFO L79 Accepts]: Start accepts. Automaton has 397 states and 1105 transitions. Word has length 21 [2025-04-13 17:57:23,557 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:23,558 INFO L485 AbstractCegarLoop]: Abstraction has 397 states and 1105 transitions. [2025-04-13 17:57:23,558 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 21 states have internal predecessors, (39), 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) [2025-04-13 17:57:23,558 INFO L278 IsEmpty]: Start isEmpty. Operand 397 states and 1105 transitions. [2025-04-13 17:57:23,558 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:23,558 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:23,558 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:23,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2025-04-13 17:57:23,758 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2025-04-13 17:57:23,759 INFO L403 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:23,759 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:23,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1121294854, now seen corresponding path program 125 times [2025-04-13 17:57:23,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:23,759 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358024246] [2025-04-13 17:57:23,759 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:57:23,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:23,767 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:57:23,774 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:23,774 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:57:23,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:57:24,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:24,011 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358024246] [2025-04-13 17:57:24,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358024246] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:24,011 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333353142] [2025-04-13 17:57:24,011 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:57:24,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:24,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:24,013 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:24,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2025-04-13 17:57:24,248 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:57:24,278 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:24,278 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:57:24,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:24,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-04-13 17:57:24,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:24,285 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:57:24,292 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-04-13 17:57:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:57:24,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:24,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333353142] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:24,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:24,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 9] total 23 [2025-04-13 17:57:24,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527879162] [2025-04-13 17:57:24,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:24,571 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:57:24,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:24,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:57:24,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:57:24,572 INFO L87 Difference]: Start difference. First operand 397 states and 1105 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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) [2025-04-13 17:57:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:27,677 INFO L93 Difference]: Finished difference Result 547 states and 1385 transitions. [2025-04-13 17:57:27,677 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 17:57:27,678 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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) Word has length 21 [2025-04-13 17:57:27,678 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:27,679 INFO L225 Difference]: With dead ends: 547 [2025-04-13 17:57:27,679 INFO L226 Difference]: Without dead ends: 540 [2025-04-13 17:57:27,680 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 17:57:27,680 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:27,680 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:57:27,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2025-04-13 17:57:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 395. [2025-04-13 17:57:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 2.7918781725888326) internal successors, (1100), 394 states have internal predecessors, (1100), 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) [2025-04-13 17:57:28,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1100 transitions. [2025-04-13 17:57:28,762 INFO L79 Accepts]: Start accepts. Automaton has 395 states and 1100 transitions. Word has length 21 [2025-04-13 17:57:28,763 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:28,763 INFO L485 AbstractCegarLoop]: Abstraction has 395 states and 1100 transitions. [2025-04-13 17:57:28,763 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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) [2025-04-13 17:57:28,763 INFO L278 IsEmpty]: Start isEmpty. Operand 395 states and 1100 transitions. [2025-04-13 17:57:28,763 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:28,763 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:28,763 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:28,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2025-04-13 17:57:28,963 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:28,964 INFO L403 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:28,964 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1202425139, now seen corresponding path program 126 times [2025-04-13 17:57:28,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:28,964 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760545723] [2025-04-13 17:57:28,964 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:57:28,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:28,972 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:57:28,981 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:28,981 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:57:28,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:29,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:29,170 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760545723] [2025-04-13 17:57:29,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760545723] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:29,170 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202642920] [2025-04-13 17:57:29,170 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:57:29,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:29,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:29,172 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:29,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2025-04-13 17:57:29,405 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:57:29,424 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:29,425 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:57:29,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:29,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:57:29,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:29,549 INFO L354 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 82 treesize of output 50 [2025-04-13 17:57:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:29,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:29,636 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:29,636 INFO L354 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 89 treesize of output 49 [2025-04-13 17:57:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:29,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202642920] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:29,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:29,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2025-04-13 17:57:29,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458442271] [2025-04-13 17:57:29,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:29,694 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:57:29,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:29,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:57:29,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:57:29,695 INFO L87 Difference]: Start difference. First operand 395 states and 1100 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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) [2025-04-13 17:57:31,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:31,457 INFO L93 Difference]: Finished difference Result 408 states and 1119 transitions. [2025-04-13 17:57:31,458 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 17:57:31,458 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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) Word has length 21 [2025-04-13 17:57:31,458 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:31,459 INFO L225 Difference]: With dead ends: 408 [2025-04-13 17:57:31,459 INFO L226 Difference]: Without dead ends: 388 [2025-04-13 17:57:31,459 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:57:31,459 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:31,459 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:57:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2025-04-13 17:57:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2025-04-13 17:57:32,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 2.8141361256544504) internal successors, (1075), 382 states have internal predecessors, (1075), 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) [2025-04-13 17:57:32,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1075 transitions. [2025-04-13 17:57:32,455 INFO L79 Accepts]: Start accepts. Automaton has 383 states and 1075 transitions. Word has length 21 [2025-04-13 17:57:32,455 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:32,455 INFO L485 AbstractCegarLoop]: Abstraction has 383 states and 1075 transitions. [2025-04-13 17:57:32,455 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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) [2025-04-13 17:57:32,455 INFO L278 IsEmpty]: Start isEmpty. Operand 383 states and 1075 transitions. [2025-04-13 17:57:32,455 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:32,455 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:32,455 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:32,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2025-04-13 17:57:32,655 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2025-04-13 17:57:32,656 INFO L403 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:32,656 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:32,656 INFO L85 PathProgramCache]: Analyzing trace with hash 943762800, now seen corresponding path program 127 times [2025-04-13 17:57:32,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:32,656 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491596749] [2025-04-13 17:57:32,656 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:57:32,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:32,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:57:32,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:32,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:57:32,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:57:32,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:32,964 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491596749] [2025-04-13 17:57:32,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491596749] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:32,964 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158127944] [2025-04-13 17:57:32,964 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:57:32,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:32,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:32,965 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:32,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2025-04-13 17:57:33,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:57:33,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:33,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:57:33,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:33,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:57:33,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:33,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:33,423 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:33,424 INFO L354 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 53 treesize of output 29 [2025-04-13 17:57:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:33,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158127944] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:33,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:33,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:57:33,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746789096] [2025-04-13 17:57:33,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:33,471 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:57:33,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:33,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:57:33,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:57:33,472 INFO L87 Difference]: Start difference. First operand 383 states and 1075 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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) [2025-04-13 17:57:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:36,157 INFO L93 Difference]: Finished difference Result 479 states and 1254 transitions. [2025-04-13 17:57:36,157 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 17:57:36,157 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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) Word has length 21 [2025-04-13 17:57:36,157 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:36,159 INFO L225 Difference]: With dead ends: 479 [2025-04-13 17:57:36,159 INFO L226 Difference]: Without dead ends: 472 [2025-04-13 17:57:36,159 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=1554, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 17:57:36,159 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:36,159 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:57:36,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2025-04-13 17:57:37,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 386. [2025-04-13 17:57:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 2.8181818181818183) internal successors, (1085), 385 states have internal predecessors, (1085), 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) [2025-04-13 17:57:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1085 transitions. [2025-04-13 17:57:37,196 INFO L79 Accepts]: Start accepts. Automaton has 386 states and 1085 transitions. Word has length 21 [2025-04-13 17:57:37,196 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:37,196 INFO L485 AbstractCegarLoop]: Abstraction has 386 states and 1085 transitions. [2025-04-13 17:57:37,196 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 states have internal predecessors, (46), 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) [2025-04-13 17:57:37,196 INFO L278 IsEmpty]: Start isEmpty. Operand 386 states and 1085 transitions. [2025-04-13 17:57:37,197 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:37,197 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:37,197 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:37,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2025-04-13 17:57:37,397 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2025-04-13 17:57:37,397 INFO L403 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:37,397 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:37,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2054758563, now seen corresponding path program 128 times [2025-04-13 17:57:37,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:37,398 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142489833] [2025-04-13 17:57:37,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:57:37,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:37,406 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:57:37,414 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:37,414 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:57:37,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:37,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:37,609 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142489833] [2025-04-13 17:57:37,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142489833] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:37,609 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646438227] [2025-04-13 17:57:37,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:57:37,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:37,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:37,610 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:37,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2025-04-13 17:57:37,848 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:57:37,870 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:37,870 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:57:37,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:37,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:57:37,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:38,032 INFO L354 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 82 treesize of output 50 [2025-04-13 17:57:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:38,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:38,133 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:38,134 INFO L354 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 119 treesize of output 63 [2025-04-13 17:57:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:38,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646438227] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:38,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:38,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2025-04-13 17:57:38,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254332261] [2025-04-13 17:57:38,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:38,187 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:57:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:38,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:57:38,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:57:38,187 INFO L87 Difference]: Start difference. First operand 386 states and 1085 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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) [2025-04-13 17:57:40,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:40,488 INFO L93 Difference]: Finished difference Result 466 states and 1226 transitions. [2025-04-13 17:57:40,489 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 17:57:40,489 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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) Word has length 21 [2025-04-13 17:57:40,489 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:40,490 INFO L225 Difference]: With dead ends: 466 [2025-04-13 17:57:40,490 INFO L226 Difference]: Without dead ends: 418 [2025-04-13 17:57:40,491 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=246, Invalid=1314, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 17:57:40,491 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 153 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:40,491 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 0 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:57:40,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2025-04-13 17:57:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 372. [2025-04-13 17:57:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 2.792452830188679) internal successors, (1036), 371 states have internal predecessors, (1036), 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) [2025-04-13 17:57:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1036 transitions. [2025-04-13 17:57:41,505 INFO L79 Accepts]: Start accepts. Automaton has 372 states and 1036 transitions. Word has length 21 [2025-04-13 17:57:41,505 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:41,505 INFO L485 AbstractCegarLoop]: Abstraction has 372 states and 1036 transitions. [2025-04-13 17:57:41,505 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 25 states have internal predecessors, (44), 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) [2025-04-13 17:57:41,505 INFO L278 IsEmpty]: Start isEmpty. Operand 372 states and 1036 transitions. [2025-04-13 17:57:41,506 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:41,506 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:41,506 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:41,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2025-04-13 17:57:41,706 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:41,706 INFO L403 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:41,707 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:41,707 INFO L85 PathProgramCache]: Analyzing trace with hash -724676176, now seen corresponding path program 129 times [2025-04-13 17:57:41,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:41,707 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474057180] [2025-04-13 17:57:41,707 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:57:41,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:41,716 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:57:41,735 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:41,735 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 17:57:41,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:57:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:42,155 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474057180] [2025-04-13 17:57:42,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474057180] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:42,155 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7875173] [2025-04-13 17:57:42,155 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:57:42,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:42,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:42,157 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:42,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2025-04-13 17:57:42,430 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:57:42,501 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:42,502 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 17:57:42,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:42,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 17:57:42,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:42,618 INFO L354 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 112 treesize of output 72 [2025-04-13 17:57:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:57:42,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:42,737 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:42,738 INFO L354 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 53 treesize of output 29 [2025-04-13 17:57:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:42,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7875173] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:42,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:42,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 24 [2025-04-13 17:57:42,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775803464] [2025-04-13 17:57:42,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:42,790 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 17:57:42,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:42,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 17:57:42,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:57:42,791 INFO L87 Difference]: Start difference. First operand 372 states and 1036 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2025-04-13 17:57:45,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:45,667 INFO L93 Difference]: Finished difference Result 436 states and 1144 transitions. [2025-04-13 17:57:45,667 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 17:57:45,667 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:57:45,667 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:45,669 INFO L225 Difference]: With dead ends: 436 [2025-04-13 17:57:45,669 INFO L226 Difference]: Without dead ends: 431 [2025-04-13 17:57:45,669 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=1278, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 17:57:45,669 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:45,669 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:57:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2025-04-13 17:57:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 367. [2025-04-13 17:57:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 2.7950819672131146) internal successors, (1023), 366 states have internal predecessors, (1023), 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) [2025-04-13 17:57:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 1023 transitions. [2025-04-13 17:57:46,812 INFO L79 Accepts]: Start accepts. Automaton has 367 states and 1023 transitions. Word has length 21 [2025-04-13 17:57:46,812 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:46,812 INFO L485 AbstractCegarLoop]: Abstraction has 367 states and 1023 transitions. [2025-04-13 17:57:46,813 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2025-04-13 17:57:46,813 INFO L278 IsEmpty]: Start isEmpty. Operand 367 states and 1023 transitions. [2025-04-13 17:57:46,813 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:46,813 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:46,813 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:46,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2025-04-13 17:57:47,013 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:47,014 INFO L403 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:47,014 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:47,014 INFO L85 PathProgramCache]: Analyzing trace with hash -638788723, now seen corresponding path program 130 times [2025-04-13 17:57:47,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:47,014 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911125703] [2025-04-13 17:57:47,014 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:57:47,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:47,022 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:57:47,029 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:47,029 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:57:47,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:57:47,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:47,290 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911125703] [2025-04-13 17:57:47,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911125703] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:47,290 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745282833] [2025-04-13 17:57:47,290 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:57:47,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:47,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:47,292 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:47,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2025-04-13 17:57:47,563 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:57:47,588 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:47,588 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:57:47,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:47,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 17:57:47,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:47,730 INFO L354 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 132 treesize of output 72 [2025-04-13 17:57:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:57:47,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:47,819 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:47,819 INFO L354 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 89 treesize of output 49 [2025-04-13 17:57:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:47,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745282833] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:47,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:47,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 21 [2025-04-13 17:57:47,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415827258] [2025-04-13 17:57:47,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:47,887 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:57:47,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:47,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:57:47,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:57:47,887 INFO L87 Difference]: Start difference. First operand 367 states and 1023 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 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) [2025-04-13 17:57:50,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:50,436 INFO L93 Difference]: Finished difference Result 446 states and 1152 transitions. [2025-04-13 17:57:50,436 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 17:57:50,436 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 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) Word has length 21 [2025-04-13 17:57:50,436 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:50,438 INFO L225 Difference]: With dead ends: 446 [2025-04-13 17:57:50,438 INFO L226 Difference]: Without dead ends: 438 [2025-04-13 17:57:50,438 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2025-04-13 17:57:50,438 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:50,438 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:57:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2025-04-13 17:57:51,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 361. [2025-04-13 17:57:51,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 2.8) internal successors, (1008), 360 states have internal predecessors, (1008), 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) [2025-04-13 17:57:51,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1008 transitions. [2025-04-13 17:57:51,423 INFO L79 Accepts]: Start accepts. Automaton has 361 states and 1008 transitions. Word has length 21 [2025-04-13 17:57:51,423 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:51,423 INFO L485 AbstractCegarLoop]: Abstraction has 361 states and 1008 transitions. [2025-04-13 17:57:51,423 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 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) [2025-04-13 17:57:51,423 INFO L278 IsEmpty]: Start isEmpty. Operand 361 states and 1008 transitions. [2025-04-13 17:57:51,424 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:51,424 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:51,424 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:51,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2025-04-13 17:57:51,624 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:51,625 INFO L403 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:51,625 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:51,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1117097002, now seen corresponding path program 131 times [2025-04-13 17:57:51,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:51,625 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578648300] [2025-04-13 17:57:51,625 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:57:51,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:51,634 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:57:51,641 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:51,641 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:57:51,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:57:51,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:51,830 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578648300] [2025-04-13 17:57:51,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578648300] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:51,830 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546854083] [2025-04-13 17:57:51,830 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:57:51,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:51,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:51,834 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:51,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2025-04-13 17:57:52,075 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:57:52,100 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:52,100 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:57:52,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:52,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 17:57:52,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:52,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:52,256 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:52,256 INFO L354 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 51 treesize of output 27 [2025-04-13 17:57:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:52,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546854083] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:52,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:52,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2025-04-13 17:57:52,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591205103] [2025-04-13 17:57:52,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:52,327 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:57:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:52,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:57:52,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:57:52,327 INFO L87 Difference]: Start difference. First operand 361 states and 1008 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 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) [2025-04-13 17:57:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:57:55,371 INFO L93 Difference]: Finished difference Result 508 states and 1310 transitions. [2025-04-13 17:57:55,372 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 17:57:55,372 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 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) Word has length 21 [2025-04-13 17:57:55,372 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:57:55,373 INFO L225 Difference]: With dead ends: 508 [2025-04-13 17:57:55,373 INFO L226 Difference]: Without dead ends: 482 [2025-04-13 17:57:55,373 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 17:57:55,374 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:57:55,374 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:57:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2025-04-13 17:57:56,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 361. [2025-04-13 17:57:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 2.772222222222222) internal successors, (998), 360 states have internal predecessors, (998), 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) [2025-04-13 17:57:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 998 transitions. [2025-04-13 17:57:56,375 INFO L79 Accepts]: Start accepts. Automaton has 361 states and 998 transitions. Word has length 21 [2025-04-13 17:57:56,375 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:57:56,375 INFO L485 AbstractCegarLoop]: Abstraction has 361 states and 998 transitions. [2025-04-13 17:57:56,375 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 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) [2025-04-13 17:57:56,376 INFO L278 IsEmpty]: Start isEmpty. Operand 361 states and 998 transitions. [2025-04-13 17:57:56,376 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:57:56,376 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:57:56,376 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:57:56,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2025-04-13 17:57:56,576 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2025-04-13 17:57:56,576 INFO L403 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:57:56,577 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:57:56,577 INFO L85 PathProgramCache]: Analyzing trace with hash -6101239, now seen corresponding path program 132 times [2025-04-13 17:57:56,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:57:56,577 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684632871] [2025-04-13 17:57:56,577 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:57:56,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:57:56,585 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:57:56,595 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:56,596 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:57:56,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:57:56,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:57:56,849 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684632871] [2025-04-13 17:57:56,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684632871] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:57:56,849 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958050668] [2025-04-13 17:57:56,849 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:57:56,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:57:56,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:57:56,851 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:57:56,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2025-04-13 17:57:57,086 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:57:57,107 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:57:57,107 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:57:57,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:57:57,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:57:57,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:57:57,198 INFO L354 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 82 treesize of output 50 [2025-04-13 17:57:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:57,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:57:57,281 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:57:57,281 INFO L354 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 87 treesize of output 47 [2025-04-13 17:57:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:57:57,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958050668] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:57:57,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:57:57,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 23 [2025-04-13 17:57:57,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174409455] [2025-04-13 17:57:57,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:57:57,363 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:57:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:57:57,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:57:57,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:57:57,363 INFO L87 Difference]: Start difference. First operand 361 states and 998 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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) [2025-04-13 17:58:00,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:00,037 INFO L93 Difference]: Finished difference Result 471 states and 1209 transitions. [2025-04-13 17:58:00,037 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 17:58:00,038 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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) Word has length 21 [2025-04-13 17:58:00,038 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:00,039 INFO L225 Difference]: With dead ends: 471 [2025-04-13 17:58:00,039 INFO L226 Difference]: Without dead ends: 434 [2025-04-13 17:58:00,039 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 17:58:00,040 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:00,040 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:58:00,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2025-04-13 17:58:01,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 355. [2025-04-13 17:58:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.7598870056497176) internal successors, (977), 354 states have internal predecessors, (977), 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) [2025-04-13 17:58:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 977 transitions. [2025-04-13 17:58:01,041 INFO L79 Accepts]: Start accepts. Automaton has 355 states and 977 transitions. Word has length 21 [2025-04-13 17:58:01,041 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:01,041 INFO L485 AbstractCegarLoop]: Abstraction has 355 states and 977 transitions. [2025-04-13 17:58:01,041 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 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) [2025-04-13 17:58:01,041 INFO L278 IsEmpty]: Start isEmpty. Operand 355 states and 977 transitions. [2025-04-13 17:58:01,042 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:01,042 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:01,042 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:01,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2025-04-13 17:58:01,242 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2025-04-13 17:58:01,242 INFO L403 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:01,243 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:01,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1509431318, now seen corresponding path program 133 times [2025-04-13 17:58:01,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:01,243 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958252645] [2025-04-13 17:58:01,243 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:58:01,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:01,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:58:01,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:01,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:58:01,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:58:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:01,579 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958252645] [2025-04-13 17:58:01,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958252645] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:01,579 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793860367] [2025-04-13 17:58:01,579 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:58:01,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:01,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:01,581 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:01,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2025-04-13 17:58:01,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:58:01,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:01,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:58:01,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:01,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:58:01,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:01,915 INFO L354 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 132 treesize of output 72 [2025-04-13 17:58:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:01,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:01,997 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:01,997 INFO L354 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 51 treesize of output 27 [2025-04-13 17:58:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:02,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793860367] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:02,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:02,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:58:02,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765697371] [2025-04-13 17:58:02,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:02,059 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:58:02,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:02,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:58:02,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:58:02,059 INFO L87 Difference]: Start difference. First operand 355 states and 977 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2025-04-13 17:58:04,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:04,994 INFO L93 Difference]: Finished difference Result 446 states and 1138 transitions. [2025-04-13 17:58:04,994 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 17:58:04,994 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:58:04,994 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:04,996 INFO L225 Difference]: With dead ends: 446 [2025-04-13 17:58:04,996 INFO L226 Difference]: Without dead ends: 441 [2025-04-13 17:58:04,996 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=1702, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 17:58:04,996 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 146 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:04,996 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 0 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:58:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2025-04-13 17:58:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 353. [2025-04-13 17:58:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 2.7613636363636362) internal successors, (972), 352 states have internal predecessors, (972), 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) [2025-04-13 17:58:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 972 transitions. [2025-04-13 17:58:05,968 INFO L79 Accepts]: Start accepts. Automaton has 353 states and 972 transitions. Word has length 21 [2025-04-13 17:58:05,968 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:05,968 INFO L485 AbstractCegarLoop]: Abstraction has 353 states and 972 transitions. [2025-04-13 17:58:05,968 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2025-04-13 17:58:05,968 INFO L278 IsEmpty]: Start isEmpty. Operand 353 states and 972 transitions. [2025-04-13 17:58:05,969 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:05,969 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:05,969 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:05,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2025-04-13 17:58:06,169 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2025-04-13 17:58:06,169 INFO L403 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:06,169 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1595318771, now seen corresponding path program 134 times [2025-04-13 17:58:06,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:06,170 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039677232] [2025-04-13 17:58:06,170 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:58:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:06,178 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:58:06,186 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:06,187 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:58:06,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:58:06,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:06,455 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039677232] [2025-04-13 17:58:06,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039677232] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:06,455 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437461435] [2025-04-13 17:58:06,455 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:58:06,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:06,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:06,457 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:06,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2025-04-13 17:58:06,697 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:58:06,717 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:06,717 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:58:06,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:06,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 17:58:06,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:06,781 INFO L354 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 91 treesize of output 59 [2025-04-13 17:58:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:58:06,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:06,854 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:06,855 INFO L354 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 87 treesize of output 47 [2025-04-13 17:58:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:06,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437461435] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:06,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:06,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 22 [2025-04-13 17:58:06,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852841374] [2025-04-13 17:58:06,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:06,919 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:58:06,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:06,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:58:06,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:58:06,919 INFO L87 Difference]: Start difference. First operand 353 states and 972 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:58:09,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:09,628 INFO L93 Difference]: Finished difference Result 454 states and 1152 transitions. [2025-04-13 17:58:09,628 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 17:58:09,628 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) Word has length 21 [2025-04-13 17:58:09,628 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:09,630 INFO L225 Difference]: With dead ends: 454 [2025-04-13 17:58:09,630 INFO L226 Difference]: Without dead ends: 423 [2025-04-13 17:58:09,630 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 17:58:09,630 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 98 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:09,630 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 0 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:58:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2025-04-13 17:58:10,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 347. [2025-04-13 17:58:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 2.7196531791907512) internal successors, (941), 346 states have internal predecessors, (941), 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) [2025-04-13 17:58:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 941 transitions. [2025-04-13 17:58:10,657 INFO L79 Accepts]: Start accepts. Automaton has 347 states and 941 transitions. Word has length 21 [2025-04-13 17:58:10,657 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:10,657 INFO L485 AbstractCegarLoop]: Abstraction has 347 states and 941 transitions. [2025-04-13 17:58:10,657 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:58:10,657 INFO L278 IsEmpty]: Start isEmpty. Operand 347 states and 941 transitions. [2025-04-13 17:58:10,658 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:10,658 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:10,658 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:10,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2025-04-13 17:58:10,858 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2025-04-13 17:58:10,858 INFO L403 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:10,859 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:10,859 INFO L85 PathProgramCache]: Analyzing trace with hash -965581482, now seen corresponding path program 135 times [2025-04-13 17:58:10,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:10,859 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550700353] [2025-04-13 17:58:10,859 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:58:10,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:10,867 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:58:10,882 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:10,882 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:58:10,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:11,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:11,079 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550700353] [2025-04-13 17:58:11,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550700353] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:11,079 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951589363] [2025-04-13 17:58:11,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:58:11,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:11,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:11,080 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:11,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2025-04-13 17:58:11,331 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:58:11,353 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:11,353 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:58:11,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:11,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:58:11,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:11,470 INFO L354 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 61 treesize of output 37 [2025-04-13 17:58:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:11,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:11,545 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:11,546 INFO L354 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 87 treesize of output 47 [2025-04-13 17:58:11,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:11,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951589363] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:11,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:11,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2025-04-13 17:58:11,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012581711] [2025-04-13 17:58:11,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:11,626 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:58:11,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:11,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:58:11,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:58:11,626 INFO L87 Difference]: Start difference. First operand 347 states and 941 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) [2025-04-13 17:58:15,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:15,146 INFO L93 Difference]: Finished difference Result 524 states and 1268 transitions. [2025-04-13 17:58:15,147 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 17:58:15,147 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:58:15,147 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:15,148 INFO L225 Difference]: With dead ends: 524 [2025-04-13 17:58:15,148 INFO L226 Difference]: Without dead ends: 508 [2025-04-13 17:58:15,149 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=362, Invalid=1894, Unknown=0, NotChecked=0, Total=2256 [2025-04-13 17:58:15,149 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 231 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:15,149 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 0 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:58:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2025-04-13 17:58:16,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 345. [2025-04-13 17:58:16,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.703488372093023) internal successors, (930), 344 states have internal predecessors, (930), 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) [2025-04-13 17:58:16,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 930 transitions. [2025-04-13 17:58:16,126 INFO L79 Accepts]: Start accepts. Automaton has 345 states and 930 transitions. Word has length 21 [2025-04-13 17:58:16,126 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:16,126 INFO L485 AbstractCegarLoop]: Abstraction has 345 states and 930 transitions. [2025-04-13 17:58:16,126 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) [2025-04-13 17:58:16,126 INFO L278 IsEmpty]: Start isEmpty. Operand 345 states and 930 transitions. [2025-04-13 17:58:16,126 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:16,127 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:16,127 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:16,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2025-04-13 17:58:16,328 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2025-04-13 17:58:16,328 INFO L403 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:16,328 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:16,328 INFO L85 PathProgramCache]: Analyzing trace with hash -133728563, now seen corresponding path program 136 times [2025-04-13 17:58:16,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:16,329 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031827877] [2025-04-13 17:58:16,329 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:58:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:16,337 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:58:16,344 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:16,344 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:58:16,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:58:16,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:16,619 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031827877] [2025-04-13 17:58:16,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031827877] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:16,619 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787181379] [2025-04-13 17:58:16,619 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:58:16,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:16,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:16,621 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:16,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2025-04-13 17:58:16,868 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:58:16,888 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:16,888 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:58:16,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:16,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-13 17:58:16,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:17,002 INFO L354 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 132 treesize of output 72 [2025-04-13 17:58:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:58:17,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:17,075 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:17,075 INFO L354 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 51 treesize of output 27 [2025-04-13 17:58:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:17,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787181379] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:17,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:17,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 22 [2025-04-13 17:58:17,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367279851] [2025-04-13 17:58:17,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:17,153 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:58:17,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:17,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:58:17,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:58:17,153 INFO L87 Difference]: Start difference. First operand 345 states and 930 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 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) [2025-04-13 17:58:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:20,545 INFO L93 Difference]: Finished difference Result 493 states and 1217 transitions. [2025-04-13 17:58:20,545 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 17:58:20,545 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 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) Word has length 21 [2025-04-13 17:58:20,545 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:20,547 INFO L225 Difference]: With dead ends: 493 [2025-04-13 17:58:20,547 INFO L226 Difference]: Without dead ends: 481 [2025-04-13 17:58:20,547 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=1529, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 17:58:20,547 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:20,547 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:58:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2025-04-13 17:58:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 343. [2025-04-13 17:58:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 2.692982456140351) internal successors, (921), 342 states have internal predecessors, (921), 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) [2025-04-13 17:58:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 921 transitions. [2025-04-13 17:58:21,511 INFO L79 Accepts]: Start accepts. Automaton has 343 states and 921 transitions. Word has length 21 [2025-04-13 17:58:21,511 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:21,511 INFO L485 AbstractCegarLoop]: Abstraction has 343 states and 921 transitions. [2025-04-13 17:58:21,511 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 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) [2025-04-13 17:58:21,511 INFO L278 IsEmpty]: Start isEmpty. Operand 343 states and 921 transitions. [2025-04-13 17:58:21,512 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:21,512 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:21,512 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:21,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2025-04-13 17:58:21,712 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2025-04-13 17:58:21,712 INFO L403 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:21,712 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:21,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1738568559, now seen corresponding path program 137 times [2025-04-13 17:58:21,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:21,713 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774044033] [2025-04-13 17:58:21,713 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:58:21,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:21,720 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:58:21,728 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:21,728 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:58:21,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:58:21,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:21,953 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774044033] [2025-04-13 17:58:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774044033] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:21,953 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639677390] [2025-04-13 17:58:21,953 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:58:21,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:21,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:21,955 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:21,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2025-04-13 17:58:22,200 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:58:22,225 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:22,225 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:58:22,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:22,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 17:58:22,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:58:22,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:22,428 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:22,429 INFO L354 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 51 treesize of output 27 [2025-04-13 17:58:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:22,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639677390] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:22,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:22,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 23 [2025-04-13 17:58:22,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458326626] [2025-04-13 17:58:22,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:22,499 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:58:22,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:22,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:58:22,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:58:22,500 INFO L87 Difference]: Start difference. First operand 343 states and 921 transitions. Second operand has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 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) [2025-04-13 17:58:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:26,344 INFO L93 Difference]: Finished difference Result 562 states and 1420 transitions. [2025-04-13 17:58:26,344 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 17:58:26,344 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 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) Word has length 21 [2025-04-13 17:58:26,344 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:26,346 INFO L225 Difference]: With dead ends: 562 [2025-04-13 17:58:26,346 INFO L226 Difference]: Without dead ends: 495 [2025-04-13 17:58:26,346 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=493, Invalid=2057, Unknown=0, NotChecked=0, Total=2550 [2025-04-13 17:58:26,346 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 140 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:26,346 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 0 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:58:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2025-04-13 17:58:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 335. [2025-04-13 17:58:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.6077844311377247) internal successors, (871), 334 states have internal predecessors, (871), 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) [2025-04-13 17:58:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 871 transitions. [2025-04-13 17:58:27,270 INFO L79 Accepts]: Start accepts. Automaton has 335 states and 871 transitions. Word has length 21 [2025-04-13 17:58:27,270 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:27,270 INFO L485 AbstractCegarLoop]: Abstraction has 335 states and 871 transitions. [2025-04-13 17:58:27,270 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 23 states have internal predecessors, (39), 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) [2025-04-13 17:58:27,270 INFO L278 IsEmpty]: Start isEmpty. Operand 335 states and 871 transitions. [2025-04-13 17:58:27,271 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:27,271 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:27,271 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:27,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2025-04-13 17:58:27,471 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2025-04-13 17:58:27,471 INFO L403 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:27,471 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:27,471 INFO L85 PathProgramCache]: Analyzing trace with hash -529336694, now seen corresponding path program 138 times [2025-04-13 17:58:27,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:27,471 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810252273] [2025-04-13 17:58:27,472 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:58:27,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:27,481 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:58:27,492 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:27,493 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 17:58:27,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:27,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:27,682 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810252273] [2025-04-13 17:58:27,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810252273] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:27,682 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601128038] [2025-04-13 17:58:27,682 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:58:27,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:27,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:27,683 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:27,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2025-04-13 17:58:27,933 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:58:27,956 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:27,957 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 17:58:27,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:27,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:58:27,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:28,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:28,128 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:28,128 INFO L354 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 51 treesize of output 27 [2025-04-13 17:58:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:28,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601128038] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:28,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:28,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2025-04-13 17:58:28,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842868062] [2025-04-13 17:58:28,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:28,189 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:58:28,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:28,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:58:28,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:58:28,189 INFO L87 Difference]: Start difference. First operand 335 states and 871 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 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) [2025-04-13 17:58:31,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:31,237 INFO L93 Difference]: Finished difference Result 508 states and 1195 transitions. [2025-04-13 17:58:31,237 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 17:58:31,237 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 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) Word has length 21 [2025-04-13 17:58:31,237 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:31,239 INFO L225 Difference]: With dead ends: 508 [2025-04-13 17:58:31,239 INFO L226 Difference]: Without dead ends: 501 [2025-04-13 17:58:31,239 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=248, Invalid=1392, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 17:58:31,239 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 140 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:31,239 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 0 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:58:31,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2025-04-13 17:58:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 335. [2025-04-13 17:58:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.6077844311377247) internal successors, (871), 334 states have internal predecessors, (871), 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) [2025-04-13 17:58:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 871 transitions. [2025-04-13 17:58:32,155 INFO L79 Accepts]: Start accepts. Automaton has 335 states and 871 transitions. Word has length 21 [2025-04-13 17:58:32,155 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:32,155 INFO L485 AbstractCegarLoop]: Abstraction has 335 states and 871 transitions. [2025-04-13 17:58:32,155 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 23 states have internal predecessors, (40), 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) [2025-04-13 17:58:32,155 INFO L278 IsEmpty]: Start isEmpty. Operand 335 states and 871 transitions. [2025-04-13 17:58:32,155 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:32,155 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:32,155 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:32,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2025-04-13 17:58:32,356 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2025-04-13 17:58:32,356 INFO L403 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:32,356 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2047286896, now seen corresponding path program 139 times [2025-04-13 17:58:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:32,356 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267731811] [2025-04-13 17:58:32,356 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:58:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:32,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:58:32,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:32,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:58:32,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:32,680 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:58:32,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:32,680 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267731811] [2025-04-13 17:58:32,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267731811] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:32,680 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831417039] [2025-04-13 17:58:32,680 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:58:32,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:32,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:32,682 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:32,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2025-04-13 17:58:32,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:58:32,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:32,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:58:32,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:32,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:58:32,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:33,031 INFO L354 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 107 treesize of output 59 [2025-04-13 17:58:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:33,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:33,119 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:33,119 INFO L354 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 51 treesize of output 27 [2025-04-13 17:58:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:33,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831417039] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:33,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:33,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:58:33,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162172915] [2025-04-13 17:58:33,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:33,189 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:58:33,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:33,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:58:33,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:58:33,189 INFO L87 Difference]: Start difference. First operand 335 states and 871 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2025-04-13 17:58:36,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:36,826 INFO L93 Difference]: Finished difference Result 491 states and 1170 transitions. [2025-04-13 17:58:36,827 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 17:58:36,827 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:58:36,827 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:36,828 INFO L225 Difference]: With dead ends: 491 [2025-04-13 17:58:36,828 INFO L226 Difference]: Without dead ends: 486 [2025-04-13 17:58:36,828 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=1825, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 17:58:36,829 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 111 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:36,829 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 0 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:58:36,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2025-04-13 17:58:37,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 335. [2025-04-13 17:58:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.6077844311377247) internal successors, (871), 334 states have internal predecessors, (871), 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) [2025-04-13 17:58:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 871 transitions. [2025-04-13 17:58:37,784 INFO L79 Accepts]: Start accepts. Automaton has 335 states and 871 transitions. Word has length 21 [2025-04-13 17:58:37,784 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:37,784 INFO L485 AbstractCegarLoop]: Abstraction has 335 states and 871 transitions. [2025-04-13 17:58:37,784 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2025-04-13 17:58:37,784 INFO L278 IsEmpty]: Start isEmpty. Operand 335 states and 871 transitions. [2025-04-13 17:58:37,784 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:37,784 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:37,785 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:37,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2025-04-13 17:58:37,985 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:37,985 INFO L403 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:37,985 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2133174349, now seen corresponding path program 140 times [2025-04-13 17:58:37,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:37,985 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556472138] [2025-04-13 17:58:37,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:58:37,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:37,994 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:58:38,004 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:38,005 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:58:38,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:58:38,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:38,269 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556472138] [2025-04-13 17:58:38,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556472138] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:38,269 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773857920] [2025-04-13 17:58:38,269 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:58:38,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:38,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:38,271 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:38,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2025-04-13 17:58:38,519 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:58:38,538 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:38,538 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:58:38,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:38,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:58:38,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:38,614 INFO L354 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 91 treesize of output 59 [2025-04-13 17:58:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:58:38,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:38,680 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:38,681 INFO L354 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 87 treesize of output 47 [2025-04-13 17:58:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:38,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773857920] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:38,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:38,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 22 [2025-04-13 17:58:38,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154859867] [2025-04-13 17:58:38,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:38,747 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:58:38,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:38,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:58:38,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:58:38,747 INFO L87 Difference]: Start difference. First operand 335 states and 871 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:58:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:41,625 INFO L93 Difference]: Finished difference Result 476 states and 1136 transitions. [2025-04-13 17:58:41,625 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 17:58:41,625 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) Word has length 21 [2025-04-13 17:58:41,626 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:41,627 INFO L225 Difference]: With dead ends: 476 [2025-04-13 17:58:41,627 INFO L226 Difference]: Without dead ends: 458 [2025-04-13 17:58:41,628 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=1209, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 17:58:41,628 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 101 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:41,628 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 0 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:58:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2025-04-13 17:58:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 337. [2025-04-13 17:58:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 2.5892857142857144) internal successors, (870), 336 states have internal predecessors, (870), 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) [2025-04-13 17:58:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 870 transitions. [2025-04-13 17:58:42,573 INFO L79 Accepts]: Start accepts. Automaton has 337 states and 870 transitions. Word has length 21 [2025-04-13 17:58:42,573 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:42,573 INFO L485 AbstractCegarLoop]: Abstraction has 337 states and 870 transitions. [2025-04-13 17:58:42,573 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 17:58:42,573 INFO L278 IsEmpty]: Start isEmpty. Operand 337 states and 870 transitions. [2025-04-13 17:58:42,574 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:42,574 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:42,574 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:42,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2025-04-13 17:58:42,774 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:42,774 INFO L403 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:42,774 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:42,774 INFO L85 PathProgramCache]: Analyzing trace with hash -427725904, now seen corresponding path program 141 times [2025-04-13 17:58:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:42,774 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883911133] [2025-04-13 17:58:42,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:58:42,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:42,782 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:58:42,792 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:42,793 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:58:42,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:42,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:42,972 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883911133] [2025-04-13 17:58:42,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883911133] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:42,972 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070528321] [2025-04-13 17:58:42,972 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:58:42,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:42,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:42,974 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:42,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2025-04-13 17:58:43,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:58:43,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:43,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:58:43,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:43,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:58:43,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:43,364 INFO L354 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 61 treesize of output 37 [2025-04-13 17:58:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:43,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:43,439 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:43,439 INFO L354 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 117 treesize of output 61 [2025-04-13 17:58:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:43,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070528321] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:43,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:43,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2025-04-13 17:58:43,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674455962] [2025-04-13 17:58:43,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:43,517 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:58:43,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:43,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:58:43,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:58:43,517 INFO L87 Difference]: Start difference. First operand 337 states and 870 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) [2025-04-13 17:58:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:46,461 INFO L93 Difference]: Finished difference Result 504 states and 1188 transitions. [2025-04-13 17:58:46,462 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 17:58:46,462 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:58:46,462 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:46,463 INFO L225 Difference]: With dead ends: 504 [2025-04-13 17:58:46,463 INFO L226 Difference]: Without dead ends: 470 [2025-04-13 17:58:46,463 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=1600, Unknown=0, NotChecked=0, Total=1892 [2025-04-13 17:58:46,463 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 200 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:46,464 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 0 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:58:46,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2025-04-13 17:58:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 335. [2025-04-13 17:58:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.57185628742515) internal successors, (859), 334 states have internal predecessors, (859), 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) [2025-04-13 17:58:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 859 transitions. [2025-04-13 17:58:47,408 INFO L79 Accepts]: Start accepts. Automaton has 335 states and 859 transitions. Word has length 21 [2025-04-13 17:58:47,408 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:47,408 INFO L485 AbstractCegarLoop]: Abstraction has 335 states and 859 transitions. [2025-04-13 17:58:47,408 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) [2025-04-13 17:58:47,408 INFO L278 IsEmpty]: Start isEmpty. Operand 335 states and 859 transitions. [2025-04-13 17:58:47,409 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:47,409 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:47,409 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:47,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2025-04-13 17:58:47,609 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:47,609 INFO L403 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:47,610 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:47,610 INFO L85 PathProgramCache]: Analyzing trace with hash 431743272, now seen corresponding path program 142 times [2025-04-13 17:58:47,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:47,610 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590421776] [2025-04-13 17:58:47,610 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:58:47,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:47,618 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:58:47,626 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:47,627 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:58:47,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:58:47,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:47,948 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590421776] [2025-04-13 17:58:47,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590421776] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:47,948 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113461558] [2025-04-13 17:58:47,948 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:58:47,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:47,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:47,949 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:47,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2025-04-13 17:58:48,212 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:58:48,234 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:48,234 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:58:48,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:48,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:58:48,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:48,327 INFO L354 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 107 treesize of output 59 [2025-04-13 17:58:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:58:48,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:48,429 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:48,429 INFO L354 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 87 treesize of output 47 [2025-04-13 17:58:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:48,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113461558] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:48,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:48,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 28 [2025-04-13 17:58:48,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507908435] [2025-04-13 17:58:48,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:48,508 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:58:48,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:48,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:58:48,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:58:48,508 INFO L87 Difference]: Start difference. First operand 335 states and 859 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) [2025-04-13 17:58:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:51,694 INFO L93 Difference]: Finished difference Result 469 states and 1108 transitions. [2025-04-13 17:58:51,694 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 17:58:51,694 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:58:51,694 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:51,695 INFO L225 Difference]: With dead ends: 469 [2025-04-13 17:58:51,695 INFO L226 Difference]: Without dead ends: 460 [2025-04-13 17:58:51,696 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=303, Invalid=1859, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 17:58:51,696 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 206 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:51,696 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 0 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:58:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2025-04-13 17:58:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 335. [2025-04-13 17:58:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.565868263473054) internal successors, (857), 334 states have internal predecessors, (857), 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) [2025-04-13 17:58:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 857 transitions. [2025-04-13 17:58:52,663 INFO L79 Accepts]: Start accepts. Automaton has 335 states and 857 transitions. Word has length 21 [2025-04-13 17:58:52,663 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:52,663 INFO L485 AbstractCegarLoop]: Abstraction has 335 states and 857 transitions. [2025-04-13 17:58:52,663 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) [2025-04-13 17:58:52,663 INFO L278 IsEmpty]: Start isEmpty. Operand 335 states and 857 transitions. [2025-04-13 17:58:52,664 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:52,664 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:52,664 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:52,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2025-04-13 17:58:52,864 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:52,864 INFO L403 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:52,865 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash 320920752, now seen corresponding path program 143 times [2025-04-13 17:58:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:52,865 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744258849] [2025-04-13 17:58:52,865 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:58:52,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:52,873 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:58:52,882 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:52,882 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 17:58:52,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:53,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:53,116 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744258849] [2025-04-13 17:58:53,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744258849] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:53,116 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702760940] [2025-04-13 17:58:53,116 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:58:53,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:53,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:53,118 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:53,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2025-04-13 17:58:53,376 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:58:53,400 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:53,400 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 17:58:53,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:53,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 17:58:53,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:53,478 INFO L354 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 107 treesize of output 59 [2025-04-13 17:58:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:53,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:53,556 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:53,556 INFO L354 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 117 treesize of output 61 [2025-04-13 17:58:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:53,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702760940] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:53,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:53,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 17:58:53,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491170903] [2025-04-13 17:58:53,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:53,626 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:58:53,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:53,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:58:53,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:58:53,627 INFO L87 Difference]: Start difference. First operand 335 states and 857 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 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) [2025-04-13 17:58:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:58,029 INFO L93 Difference]: Finished difference Result 592 states and 1346 transitions. [2025-04-13 17:58:58,029 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 17:58:58,029 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 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) Word has length 21 [2025-04-13 17:58:58,029 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:58,030 INFO L225 Difference]: With dead ends: 592 [2025-04-13 17:58:58,030 INFO L226 Difference]: Without dead ends: 585 [2025-04-13 17:58:58,031 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=354, Invalid=1998, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 17:58:58,031 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:58,031 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 0 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:58:58,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2025-04-13 17:58:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 335. [2025-04-13 17:58:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.565868263473054) internal successors, (857), 334 states have internal predecessors, (857), 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) [2025-04-13 17:58:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 857 transitions. [2025-04-13 17:58:58,957 INFO L79 Accepts]: Start accepts. Automaton has 335 states and 857 transitions. Word has length 21 [2025-04-13 17:58:58,957 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:58,957 INFO L485 AbstractCegarLoop]: Abstraction has 335 states and 857 transitions. [2025-04-13 17:58:58,957 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 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) [2025-04-13 17:58:58,957 INFO L278 IsEmpty]: Start isEmpty. Operand 335 states and 857 transitions. [2025-04-13 17:58:58,958 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:58:58,958 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:58,958 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:58,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2025-04-13 17:58:59,158 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2025-04-13 17:58:59,158 INFO L403 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:58:59,159 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:59,159 INFO L85 PathProgramCache]: Analyzing trace with hash 354222285, now seen corresponding path program 144 times [2025-04-13 17:58:59,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:59,159 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72919218] [2025-04-13 17:58:59,159 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:58:59,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:59,167 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:58:59,178 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:59,178 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:58:59,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:58:59,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:59,492 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72919218] [2025-04-13 17:58:59,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72919218] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:59,492 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270656505] [2025-04-13 17:58:59,492 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:58:59,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:59,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:59,495 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:58:59,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2025-04-13 17:58:59,773 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:58:59,795 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:58:59,795 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:58:59,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:59,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:58:59,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:59,875 INFO L354 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 91 treesize of output 59 [2025-04-13 17:58:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:58:59,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:59,968 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:58:59,968 INFO L354 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 51 treesize of output 27 [2025-04-13 17:59:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:00,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270656505] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:00,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:00,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 26 [2025-04-13 17:59:00,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862370777] [2025-04-13 17:59:00,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:00,035 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:59:00,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:00,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:59:00,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:59:00,035 INFO L87 Difference]: Start difference. First operand 335 states and 857 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 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) [2025-04-13 17:59:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:03,917 INFO L93 Difference]: Finished difference Result 524 states and 1233 transitions. [2025-04-13 17:59:03,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 17:59:03,917 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 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) Word has length 21 [2025-04-13 17:59:03,918 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:03,919 INFO L225 Difference]: With dead ends: 524 [2025-04-13 17:59:03,919 INFO L226 Difference]: Without dead ends: 472 [2025-04-13 17:59:03,920 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=523, Invalid=3017, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 17:59:03,920 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 185 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:03,920 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 0 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:59:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2025-04-13 17:59:04,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 337. [2025-04-13 17:59:04,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 2.5595238095238093) internal successors, (860), 336 states have internal predecessors, (860), 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) [2025-04-13 17:59:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 860 transitions. [2025-04-13 17:59:04,959 INFO L79 Accepts]: Start accepts. Automaton has 337 states and 860 transitions. Word has length 21 [2025-04-13 17:59:04,959 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:04,959 INFO L485 AbstractCegarLoop]: Abstraction has 337 states and 860 transitions. [2025-04-13 17:59:04,960 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 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) [2025-04-13 17:59:04,960 INFO L278 IsEmpty]: Start isEmpty. Operand 337 states and 860 transitions. [2025-04-13 17:59:04,960 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:04,960 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:04,960 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:04,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2025-04-13 17:59:05,160 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2025-04-13 17:59:05,161 INFO L403 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:05,161 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash 406808205, now seen corresponding path program 145 times [2025-04-13 17:59:05,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:05,161 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353777054] [2025-04-13 17:59:05,161 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:05,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:05,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:59:05,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:05,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:05,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:05,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:05,482 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353777054] [2025-04-13 17:59:05,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353777054] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:05,482 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534629341] [2025-04-13 17:59:05,483 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:05,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:05,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:05,484 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:05,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2025-04-13 17:59:05,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:59:05,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:05,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:05,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:05,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-13 17:59:05,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:05,880 INFO L354 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 107 treesize of output 59 [2025-04-13 17:59:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:05,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:05,972 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:59:05,972 INFO L354 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 51 treesize of output 27 [2025-04-13 17:59:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:06,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534629341] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:06,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:06,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:59:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455455030] [2025-04-13 17:59:06,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:06,049 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:59:06,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:06,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:59:06,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:59:06,049 INFO L87 Difference]: Start difference. First operand 337 states and 860 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2025-04-13 17:59:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:09,468 INFO L93 Difference]: Finished difference Result 468 states and 1074 transitions. [2025-04-13 17:59:09,468 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 17:59:09,469 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:59:09,469 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:09,470 INFO L225 Difference]: With dead ends: 468 [2025-04-13 17:59:09,470 INFO L226 Difference]: Without dead ends: 460 [2025-04-13 17:59:09,470 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=548, Invalid=3358, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 17:59:09,470 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:09,470 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:59:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2025-04-13 17:59:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 335. [2025-04-13 17:59:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.553892215568862) internal successors, (853), 334 states have internal predecessors, (853), 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) [2025-04-13 17:59:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 853 transitions. [2025-04-13 17:59:10,408 INFO L79 Accepts]: Start accepts. Automaton has 335 states and 853 transitions. Word has length 21 [2025-04-13 17:59:10,408 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:10,408 INFO L485 AbstractCegarLoop]: Abstraction has 335 states and 853 transitions. [2025-04-13 17:59:10,408 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2025-04-13 17:59:10,408 INFO L278 IsEmpty]: Start isEmpty. Operand 335 states and 853 transitions. [2025-04-13 17:59:10,409 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:10,409 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:10,409 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:10,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:10,609 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2025-04-13 17:59:10,609 INFO L403 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:10,609 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:10,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1200712981, now seen corresponding path program 146 times [2025-04-13 17:59:10,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:10,610 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611863841] [2025-04-13 17:59:10,610 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:10,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:10,618 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:59:10,625 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:10,625 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:10,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:10,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:10,815 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611863841] [2025-04-13 17:59:10,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611863841] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:10,815 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972691511] [2025-04-13 17:59:10,815 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:10,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:10,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:10,817 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:10,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2025-04-13 17:59:11,076 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:59:11,096 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:11,096 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:11,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:11,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:59:11,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:11,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:11,282 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:59:11,282 INFO L354 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 51 treesize of output 27 [2025-04-13 17:59:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:11,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972691511] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:11,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:11,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2025-04-13 17:59:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013795928] [2025-04-13 17:59:11,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:11,348 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:59:11,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:11,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:59:11,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:59:11,348 INFO L87 Difference]: Start difference. First operand 335 states and 853 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) [2025-04-13 17:59:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:14,390 INFO L93 Difference]: Finished difference Result 461 states and 1074 transitions. [2025-04-13 17:59:14,391 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 17:59:14,391 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:59:14,391 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:14,392 INFO L225 Difference]: With dead ends: 461 [2025-04-13 17:59:14,392 INFO L226 Difference]: Without dead ends: 453 [2025-04-13 17:59:14,392 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=293, Invalid=1687, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 17:59:14,393 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 127 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:14,393 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 0 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:59:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2025-04-13 17:59:15,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 333. [2025-04-13 17:59:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 2.5481927710843375) internal successors, (846), 332 states have internal predecessors, (846), 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) [2025-04-13 17:59:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 846 transitions. [2025-04-13 17:59:15,365 INFO L79 Accepts]: Start accepts. Automaton has 333 states and 846 transitions. Word has length 21 [2025-04-13 17:59:15,365 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:15,365 INFO L485 AbstractCegarLoop]: Abstraction has 333 states and 846 transitions. [2025-04-13 17:59:15,365 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) [2025-04-13 17:59:15,365 INFO L278 IsEmpty]: Start isEmpty. Operand 333 states and 846 transitions. [2025-04-13 17:59:15,365 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:15,365 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:15,365 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:15,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:15,566 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2025-04-13 17:59:15,566 INFO L403 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:15,566 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:15,566 INFO L85 PathProgramCache]: Analyzing trace with hash 932640910, now seen corresponding path program 147 times [2025-04-13 17:59:15,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:15,566 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483767554] [2025-04-13 17:59:15,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:15,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:15,575 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:59:15,587 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:15,588 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:59:15,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:15,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:15,755 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483767554] [2025-04-13 17:59:15,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483767554] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:15,755 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589097829] [2025-04-13 17:59:15,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:15,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:15,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:15,757 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:15,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2025-04-13 17:59:16,019 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:59:16,041 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:16,041 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:59:16,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:16,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:59:16,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:16,154 INFO L354 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 61 treesize of output 37 [2025-04-13 17:59:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:16,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:16,231 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:59:16,231 INFO L354 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 89 treesize of output 49 [2025-04-13 17:59:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:16,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589097829] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:16,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:16,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 24 [2025-04-13 17:59:16,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637716076] [2025-04-13 17:59:16,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:16,286 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 17:59:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:16,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 17:59:16,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:59:16,286 INFO L87 Difference]: Start difference. First operand 333 states and 846 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 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) [2025-04-13 17:59:18,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:18,205 INFO L93 Difference]: Finished difference Result 366 states and 896 transitions. [2025-04-13 17:59:18,205 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 17:59:18,205 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 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) Word has length 21 [2025-04-13 17:59:18,205 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:18,207 INFO L225 Difference]: With dead ends: 366 [2025-04-13 17:59:18,207 INFO L226 Difference]: Without dead ends: 353 [2025-04-13 17:59:18,207 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:59:18,207 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:18,207 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:59:18,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2025-04-13 17:59:19,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 333. [2025-04-13 17:59:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 2.5421686746987953) internal successors, (844), 332 states have internal predecessors, (844), 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) [2025-04-13 17:59:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 844 transitions. [2025-04-13 17:59:19,187 INFO L79 Accepts]: Start accepts. Automaton has 333 states and 844 transitions. Word has length 21 [2025-04-13 17:59:19,187 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:19,187 INFO L485 AbstractCegarLoop]: Abstraction has 333 states and 844 transitions. [2025-04-13 17:59:19,188 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 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) [2025-04-13 17:59:19,188 INFO L278 IsEmpty]: Start isEmpty. Operand 333 states and 844 transitions. [2025-04-13 17:59:19,188 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:19,188 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:19,188 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:19,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:19,388 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:19,388 INFO L403 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:19,389 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:19,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1806381590, now seen corresponding path program 148 times [2025-04-13 17:59:19,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:19,389 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100708492] [2025-04-13 17:59:19,389 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:19,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:19,397 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:59:19,406 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:19,407 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:19,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:19,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:19,705 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100708492] [2025-04-13 17:59:19,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100708492] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:19,705 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238267958] [2025-04-13 17:59:19,705 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:19,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:19,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:19,707 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:19,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2025-04-13 17:59:19,970 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:59:19,991 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:19,992 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:19,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:19,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:59:19,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:20,143 INFO L354 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 98 treesize of output 50 [2025-04-13 17:59:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:59:20,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:20,270 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:59:20,270 INFO L354 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 119 treesize of output 63 [2025-04-13 17:59:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:20,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238267958] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:20,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:20,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 28 [2025-04-13 17:59:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164963946] [2025-04-13 17:59:20,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:20,339 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 17:59:20,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:20,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 17:59:20,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:59:20,339 INFO L87 Difference]: Start difference. First operand 333 states and 844 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) [2025-04-13 17:59:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:22,750 INFO L93 Difference]: Finished difference Result 398 states and 960 transitions. [2025-04-13 17:59:22,751 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 17:59:22,751 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:59:22,751 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:22,752 INFO L225 Difference]: With dead ends: 398 [2025-04-13 17:59:22,752 INFO L226 Difference]: Without dead ends: 387 [2025-04-13 17:59:22,752 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=1381, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 17:59:22,753 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:22,753 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:59:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2025-04-13 17:59:23,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 333. [2025-04-13 17:59:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 2.536144578313253) internal successors, (842), 332 states have internal predecessors, (842), 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) [2025-04-13 17:59:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 842 transitions. [2025-04-13 17:59:23,702 INFO L79 Accepts]: Start accepts. Automaton has 333 states and 842 transitions. Word has length 21 [2025-04-13 17:59:23,702 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:23,702 INFO L485 AbstractCegarLoop]: Abstraction has 333 states and 842 transitions. [2025-04-13 17:59:23,702 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) [2025-04-13 17:59:23,702 INFO L278 IsEmpty]: Start isEmpty. Operand 333 states and 842 transitions. [2025-04-13 17:59:23,703 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:23,703 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:23,703 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:23,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:23,903 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:23,903 INFO L403 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:23,903 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1742620240, now seen corresponding path program 149 times [2025-04-13 17:59:23,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:23,904 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195034106] [2025-04-13 17:59:23,904 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:23,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:23,912 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:59:23,919 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:23,919 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 17:59:23,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:24,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:24,139 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195034106] [2025-04-13 17:59:24,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195034106] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:24,139 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874615107] [2025-04-13 17:59:24,139 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:24,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:24,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:24,141 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:24,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2025-04-13 17:59:24,404 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:59:24,438 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:24,438 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 17:59:24,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:24,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 17:59:24,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:24,538 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:59:24,538 INFO L354 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 119 treesize of output 67 [2025-04-13 17:59:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:24,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:24,682 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:59:24,682 INFO L354 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 87 treesize of output 42 [2025-04-13 17:59:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:24,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874615107] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:24,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:24,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2025-04-13 17:59:24,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191281767] [2025-04-13 17:59:24,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:24,761 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:59:24,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:24,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:59:24,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:59:24,761 INFO L87 Difference]: Start difference. First operand 333 states and 842 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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) [2025-04-13 17:59:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:28,718 INFO L93 Difference]: Finished difference Result 568 states and 1300 transitions. [2025-04-13 17:59:28,718 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 17:59:28,718 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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) Word has length 21 [2025-04-13 17:59:28,718 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:28,719 INFO L225 Difference]: With dead ends: 568 [2025-04-13 17:59:28,719 INFO L226 Difference]: Without dead ends: 563 [2025-04-13 17:59:28,719 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=1087, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 17:59:28,720 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:28,720 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 0 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:59:28,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2025-04-13 17:59:29,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 335. [2025-04-13 17:59:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.535928143712575) internal successors, (847), 334 states have internal predecessors, (847), 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) [2025-04-13 17:59:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 847 transitions. [2025-04-13 17:59:29,656 INFO L79 Accepts]: Start accepts. Automaton has 335 states and 847 transitions. Word has length 21 [2025-04-13 17:59:29,656 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:29,656 INFO L485 AbstractCegarLoop]: Abstraction has 335 states and 847 transitions. [2025-04-13 17:59:29,656 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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) [2025-04-13 17:59:29,656 INFO L278 IsEmpty]: Start isEmpty. Operand 335 states and 847 transitions. [2025-04-13 17:59:29,657 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:29,657 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:29,657 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:29,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:29,857 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:29,857 INFO L403 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:29,857 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:29,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1656732787, now seen corresponding path program 150 times [2025-04-13 17:59:29,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:29,857 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824942931] [2025-04-13 17:59:29,858 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:29,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:29,866 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:59:29,879 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:29,879 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 17:59:29,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:30,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:30,161 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824942931] [2025-04-13 17:59:30,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824942931] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:30,161 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392441592] [2025-04-13 17:59:30,161 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:30,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:30,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:30,162 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:30,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2025-04-13 17:59:30,424 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 4 equivalence classes. [2025-04-13 17:59:30,446 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:30,446 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 17:59:30,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:30,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 17:59:30,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:30,536 INFO L354 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 112 treesize of output 72 [2025-04-13 17:59:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:59:30,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:30,644 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:59:30,644 INFO L354 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 53 treesize of output 29 [2025-04-13 17:59:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:30,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392441592] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:30,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:30,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 23 [2025-04-13 17:59:30,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965551178] [2025-04-13 17:59:30,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:30,691 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:59:30,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:30,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:59:30,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:59:30,692 INFO L87 Difference]: Start difference. First operand 335 states and 847 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 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) [2025-04-13 17:59:33,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:33,120 INFO L93 Difference]: Finished difference Result 407 states and 979 transitions. [2025-04-13 17:59:33,120 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 17:59:33,120 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 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) Word has length 21 [2025-04-13 17:59:33,120 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:33,122 INFO L225 Difference]: With dead ends: 407 [2025-04-13 17:59:33,122 INFO L226 Difference]: Without dead ends: 388 [2025-04-13 17:59:33,122 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1359, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 17:59:33,123 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 150 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:33,123 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 0 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:59:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2025-04-13 17:59:34,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 331. [2025-04-13 17:59:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.5242424242424244) internal successors, (833), 330 states have internal predecessors, (833), 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) [2025-04-13 17:59:34,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 833 transitions. [2025-04-13 17:59:34,075 INFO L79 Accepts]: Start accepts. Automaton has 331 states and 833 transitions. Word has length 21 [2025-04-13 17:59:34,075 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:34,075 INFO L485 AbstractCegarLoop]: Abstraction has 331 states and 833 transitions. [2025-04-13 17:59:34,075 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 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) [2025-04-13 17:59:34,075 INFO L278 IsEmpty]: Start isEmpty. Operand 331 states and 833 transitions. [2025-04-13 17:59:34,075 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:34,075 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:34,075 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:34,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2025-04-13 17:59:34,276 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:34,276 INFO L403 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:34,276 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1033394513, now seen corresponding path program 151 times [2025-04-13 17:59:34,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:34,276 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543055241] [2025-04-13 17:59:34,276 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:34,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:34,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:59:34,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:34,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:34,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:34,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:34,570 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543055241] [2025-04-13 17:59:34,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543055241] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:34,570 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964907163] [2025-04-13 17:59:34,570 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:34,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:34,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:34,572 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:34,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2025-04-13 17:59:34,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 17:59:34,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:34,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:34,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:34,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 17:59:34,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:34,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:35,064 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:59:35,064 INFO L354 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 53 treesize of output 29 [2025-04-13 17:59:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:35,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964907163] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:35,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:35,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 17:59:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33524135] [2025-04-13 17:59:35,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:35,125 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 17:59:35,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:35,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 17:59:35,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:59:35,126 INFO L87 Difference]: Start difference. First operand 331 states and 833 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) [2025-04-13 17:59:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:37,681 INFO L93 Difference]: Finished difference Result 384 states and 926 transitions. [2025-04-13 17:59:37,681 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 17:59:37,681 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) Word has length 21 [2025-04-13 17:59:37,681 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:37,682 INFO L225 Difference]: With dead ends: 384 [2025-04-13 17:59:37,683 INFO L226 Difference]: Without dead ends: 376 [2025-04-13 17:59:37,683 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=1440, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 17:59:37,683 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:37,683 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:59:37,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2025-04-13 17:59:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 329. [2025-04-13 17:59:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 2.518292682926829) internal successors, (826), 328 states have internal predecessors, (826), 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) [2025-04-13 17:59:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 826 transitions. [2025-04-13 17:59:38,739 INFO L79 Accepts]: Start accepts. Automaton has 329 states and 826 transitions. Word has length 21 [2025-04-13 17:59:38,739 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:38,739 INFO L485 AbstractCegarLoop]: Abstraction has 329 states and 826 transitions. [2025-04-13 17:59:38,739 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) [2025-04-13 17:59:38,739 INFO L278 IsEmpty]: Start isEmpty. Operand 329 states and 826 transitions. [2025-04-13 17:59:38,739 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:38,739 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:38,739 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:38,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:38,940 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable163 [2025-04-13 17:59:38,940 INFO L403 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:38,940 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:38,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1555121997, now seen corresponding path program 152 times [2025-04-13 17:59:38,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:38,940 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880323274] [2025-04-13 17:59:38,940 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:38,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:38,949 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:59:38,957 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:38,957 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:38,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:39,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:39,131 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880323274] [2025-04-13 17:59:39,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880323274] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:39,131 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372491483] [2025-04-13 17:59:39,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:39,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:39,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:39,133 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:39,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2025-04-13 17:59:39,414 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:59:39,435 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:39,435 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:39,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:39,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 17:59:39,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:39,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:39,652 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:59:39,652 INFO L354 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 53 treesize of output 29 [2025-04-13 17:59:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:39,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372491483] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:39,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:39,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2025-04-13 17:59:39,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661210163] [2025-04-13 17:59:39,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:39,702 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 17:59:39,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:39,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 17:59:39,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:59:39,702 INFO L87 Difference]: Start difference. First operand 329 states and 826 transitions. Second operand has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) [2025-04-13 17:59:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:41,669 INFO L93 Difference]: Finished difference Result 366 states and 888 transitions. [2025-04-13 17:59:41,669 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 17:59:41,669 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:59:41,669 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:41,670 INFO L225 Difference]: With dead ends: 366 [2025-04-13 17:59:41,670 INFO L226 Difference]: Without dead ends: 358 [2025-04-13 17:59:41,670 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2025-04-13 17:59:41,670 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:41,671 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:59:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2025-04-13 17:59:42,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 325. [2025-04-13 17:59:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 2.5185185185185186) internal successors, (816), 324 states have internal predecessors, (816), 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) [2025-04-13 17:59:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 816 transitions. [2025-04-13 17:59:42,590 INFO L79 Accepts]: Start accepts. Automaton has 325 states and 816 transitions. Word has length 21 [2025-04-13 17:59:42,590 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:42,590 INFO L485 AbstractCegarLoop]: Abstraction has 325 states and 816 transitions. [2025-04-13 17:59:42,590 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 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) [2025-04-13 17:59:42,590 INFO L278 IsEmpty]: Start isEmpty. Operand 325 states and 816 transitions. [2025-04-13 17:59:42,590 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:42,590 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:42,590 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:42,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2025-04-13 17:59:42,790 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:42,791 INFO L403 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:42,791 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:42,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1658846482, now seen corresponding path program 153 times [2025-04-13 17:59:42,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:42,791 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650651873] [2025-04-13 17:59:42,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:42,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:42,799 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:59:42,809 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:42,809 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:59:42,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:42,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:42,969 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650651873] [2025-04-13 17:59:42,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650651873] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:42,969 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204399238] [2025-04-13 17:59:42,969 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:42,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:42,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:42,971 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:42,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2025-04-13 17:59:43,239 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:59:43,259 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:43,259 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:59:43,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:43,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-04-13 17:59:43,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:43,283 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-13 17:59:43,294 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-04-13 17:59:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:43,410 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:43,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204399238] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:43,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:43,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 9] total 25 [2025-04-13 17:59:43,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897140192] [2025-04-13 17:59:43,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:43,549 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:59:43,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:43,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:59:43,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:59:43,549 INFO L87 Difference]: Start difference. First operand 325 states and 816 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) [2025-04-13 17:59:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:46,882 INFO L93 Difference]: Finished difference Result 508 states and 1212 transitions. [2025-04-13 17:59:46,882 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 17:59:46,882 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 17:59:46,882 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:46,884 INFO L225 Difference]: With dead ends: 508 [2025-04-13 17:59:46,884 INFO L226 Difference]: Without dead ends: 501 [2025-04-13 17:59:46,884 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=1490, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 17:59:46,884 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:46,884 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:59:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2025-04-13 17:59:47,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 335. [2025-04-13 17:59:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 2.5479041916167664) internal successors, (851), 334 states have internal predecessors, (851), 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) [2025-04-13 17:59:47,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 851 transitions. [2025-04-13 17:59:47,857 INFO L79 Accepts]: Start accepts. Automaton has 335 states and 851 transitions. Word has length 21 [2025-04-13 17:59:47,857 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:47,857 INFO L485 AbstractCegarLoop]: Abstraction has 335 states and 851 transitions. [2025-04-13 17:59:47,857 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) [2025-04-13 17:59:47,857 INFO L278 IsEmpty]: Start isEmpty. Operand 335 states and 851 transitions. [2025-04-13 17:59:47,857 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:47,857 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:47,857 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:47,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2025-04-13 17:59:48,058 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:48,058 INFO L403 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:48,058 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash -59497224, now seen corresponding path program 154 times [2025-04-13 17:59:48,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:48,058 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791666491] [2025-04-13 17:59:48,058 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:48,067 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:59:48,078 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:48,078 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:48,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:48,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:48,394 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791666491] [2025-04-13 17:59:48,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791666491] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:48,394 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060871569] [2025-04-13 17:59:48,395 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:48,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:48,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:48,396 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:48,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2025-04-13 17:59:48,696 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 17:59:48,727 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:48,727 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:48,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:48,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 17:59:48,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:48,822 INFO L354 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 132 treesize of output 72 [2025-04-13 17:59:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 17:59:48,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:48,913 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:59:48,914 INFO L354 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 51 treesize of output 27 [2025-04-13 17:59:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:48,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060871569] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:48,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:48,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 24 [2025-04-13 17:59:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641847922] [2025-04-13 17:59:48,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:48,974 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 17:59:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:48,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 17:59:48,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:59:48,974 INFO L87 Difference]: Start difference. First operand 335 states and 851 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 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) [2025-04-13 17:59:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:52,706 INFO L93 Difference]: Finished difference Result 499 states and 1185 transitions. [2025-04-13 17:59:52,706 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 17:59:52,707 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 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) Word has length 21 [2025-04-13 17:59:52,707 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:52,708 INFO L225 Difference]: With dead ends: 499 [2025-04-13 17:59:52,708 INFO L226 Difference]: Without dead ends: 492 [2025-04-13 17:59:52,708 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=1825, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 17:59:52,708 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:52,708 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:59:52,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2025-04-13 17:59:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 337. [2025-04-13 17:59:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 2.5595238095238093) internal successors, (860), 336 states have internal predecessors, (860), 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) [2025-04-13 17:59:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 860 transitions. [2025-04-13 17:59:53,687 INFO L79 Accepts]: Start accepts. Automaton has 337 states and 860 transitions. Word has length 21 [2025-04-13 17:59:53,687 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:53,687 INFO L485 AbstractCegarLoop]: Abstraction has 337 states and 860 transitions. [2025-04-13 17:59:53,687 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 states have internal predecessors, (39), 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) [2025-04-13 17:59:53,687 INFO L278 IsEmpty]: Start isEmpty. Operand 337 states and 860 transitions. [2025-04-13 17:59:53,688 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 17:59:53,688 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:53,688 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:53,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:53,888 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2025-04-13 17:59:53,888 INFO L403 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:53,888 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash 26390229, now seen corresponding path program 155 times [2025-04-13 17:59:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:53,889 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827949592] [2025-04-13 17:59:53,889 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:53,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:53,897 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:59:53,904 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:53,905 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:59:53,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:54,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:54,111 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827949592] [2025-04-13 17:59:54,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827949592] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:54,111 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803949646] [2025-04-13 17:59:54,111 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:54,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:54,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:54,113 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:54,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2025-04-13 17:59:54,388 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 17:59:54,418 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 17:59:54,418 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:59:54,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:54,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 17:59:54,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:54,512 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 17:59:54,512 INFO L354 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 150 treesize of output 80 [2025-04-13 17:59:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:54,586 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:54,644 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 17:59:54,645 INFO L354 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 117 treesize of output 56 [2025-04-13 17:59:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 17:59:54,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803949646] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:54,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:54,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2025-04-13 17:59:54,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939864835] [2025-04-13 17:59:54,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:54,699 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:59:54,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:54,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:59:54,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:59:54,699 INFO L87 Difference]: Start difference. First operand 337 states and 860 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 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) [2025-04-13 17:59:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:59,209 INFO L93 Difference]: Finished difference Result 602 states and 1388 transitions. [2025-04-13 17:59:59,209 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 17:59:59,209 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 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) Word has length 21 [2025-04-13 17:59:59,209 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:59,211 INFO L225 Difference]: With dead ends: 602 [2025-04-13 17:59:59,211 INFO L226 Difference]: Without dead ends: 565 [2025-04-13 17:59:59,211 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=2032, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 17:59:59,211 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:59,211 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:59:59,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-04-13 18:00:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 347. [2025-04-13 18:00:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 2.5578034682080926) internal successors, (885), 346 states have internal predecessors, (885), 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) [2025-04-13 18:00:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 885 transitions. [2025-04-13 18:00:00,343 INFO L79 Accepts]: Start accepts. Automaton has 347 states and 885 transitions. Word has length 21 [2025-04-13 18:00:00,343 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:00,343 INFO L485 AbstractCegarLoop]: Abstraction has 347 states and 885 transitions. [2025-04-13 18:00:00,343 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 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) [2025-04-13 18:00:00,343 INFO L278 IsEmpty]: Start isEmpty. Operand 347 states and 885 transitions. [2025-04-13 18:00:00,343 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:00:00,343 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:00,344 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:00,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2025-04-13 18:00:00,544 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2025-04-13 18:00:00,544 INFO L403 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:00,544 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1788544558, now seen corresponding path program 156 times [2025-04-13 18:00:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:00,544 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039162654] [2025-04-13 18:00:00,544 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:00,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:00,553 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:00:00,563 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:00,563 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:00,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:00,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:00,811 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039162654] [2025-04-13 18:00:00,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039162654] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:00,811 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391650610] [2025-04-13 18:00:00,811 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:00,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:00,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:00,813 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:00,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2025-04-13 18:00:01,092 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:00:01,112 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:01,112 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:01,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:01,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-04-13 18:00:01,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:01,189 INFO L354 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 112 treesize of output 72 [2025-04-13 18:00:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:00:01,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:01,278 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:00:01,279 INFO L354 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 117 treesize of output 61 [2025-04-13 18:00:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:01,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391650610] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:01,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:01,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 22 [2025-04-13 18:00:01,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020283288] [2025-04-13 18:00:01,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:01,340 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:00:01,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:01,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:00:01,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:00:01,341 INFO L87 Difference]: Start difference. First operand 347 states and 885 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 18:00:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:07,129 INFO L93 Difference]: Finished difference Result 603 states and 1348 transitions. [2025-04-13 18:00:07,129 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-04-13 18:00:07,130 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) Word has length 21 [2025-04-13 18:00:07,130 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:07,131 INFO L225 Difference]: With dead ends: 603 [2025-04-13 18:00:07,131 INFO L226 Difference]: Without dead ends: 596 [2025-04-13 18:00:07,131 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=437, Invalid=2643, Unknown=0, NotChecked=0, Total=3080 [2025-04-13 18:00:07,132 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 206 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:07,132 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 0 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:00:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2025-04-13 18:00:08,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 345. [2025-04-13 18:00:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.558139534883721) internal successors, (880), 344 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 880 transitions. [2025-04-13 18:00:08,268 INFO L79 Accepts]: Start accepts. Automaton has 345 states and 880 transitions. Word has length 21 [2025-04-13 18:00:08,268 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:08,268 INFO L485 AbstractCegarLoop]: Abstraction has 345 states and 880 transitions. [2025-04-13 18:00:08,268 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 18:00:08,268 INFO L278 IsEmpty]: Start isEmpty. Operand 345 states and 880 transitions. [2025-04-13 18:00:08,268 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:00:08,268 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:08,268 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:08,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2025-04-13 18:00:08,468 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2025-04-13 18:00:08,469 INFO L403 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:08,469 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:08,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1702657105, now seen corresponding path program 157 times [2025-04-13 18:00:08,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:08,469 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372310208] [2025-04-13 18:00:08,469 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:08,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:08,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:00:08,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:08,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:08,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:08,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:08,784 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372310208] [2025-04-13 18:00:08,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372310208] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:08,784 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88035013] [2025-04-13 18:00:08,784 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:08,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:08,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:08,785 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:08,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2025-04-13 18:00:09,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:00:09,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:09,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:09,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:09,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-04-13 18:00:09,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:09,184 INFO L354 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 107 treesize of output 59 [2025-04-13 18:00:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:09,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:09,268 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:00:09,268 INFO L354 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 51 treesize of output 27 [2025-04-13 18:00:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88035013] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:09,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:09,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 18:00:09,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207253162] [2025-04-13 18:00:09,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:09,334 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:00:09,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:09,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:00:09,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:00:09,335 INFO L87 Difference]: Start difference. First operand 345 states and 880 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2025-04-13 18:00:15,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:15,077 INFO L93 Difference]: Finished difference Result 570 states and 1295 transitions. [2025-04-13 18:00:15,078 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 18:00:15,078 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 18:00:15,078 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:15,080 INFO L225 Difference]: With dead ends: 570 [2025-04-13 18:00:15,080 INFO L226 Difference]: Without dead ends: 555 [2025-04-13 18:00:15,084 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=392, Invalid=2914, Unknown=0, NotChecked=0, Total=3306 [2025-04-13 18:00:15,084 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:15,084 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:00:15,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2025-04-13 18:00:16,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 343. [2025-04-13 18:00:16,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 2.5526315789473686) internal successors, (873), 342 states have internal predecessors, (873), 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) [2025-04-13 18:00:16,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 873 transitions. [2025-04-13 18:00:16,684 INFO L79 Accepts]: Start accepts. Automaton has 343 states and 873 transitions. Word has length 21 [2025-04-13 18:00:16,684 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:16,685 INFO L485 AbstractCegarLoop]: Abstraction has 343 states and 873 transitions. [2025-04-13 18:00:16,685 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2025-04-13 18:00:16,685 INFO L278 IsEmpty]: Start isEmpty. Operand 343 states and 873 transitions. [2025-04-13 18:00:16,685 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:00:16,685 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:16,686 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:16,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2025-04-13 18:00:16,888 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2025-04-13 18:00:16,888 INFO L403 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:16,888 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash 873966485, now seen corresponding path program 158 times [2025-04-13 18:00:16,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:16,888 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225422708] [2025-04-13 18:00:16,888 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:16,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:16,900 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:00:16,911 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:16,911 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:16,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:17,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:17,317 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225422708] [2025-04-13 18:00:17,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225422708] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:17,318 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803246244] [2025-04-13 18:00:17,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:17,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:17,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:17,320 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:17,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2025-04-13 18:00:17,689 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:00:17,719 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:17,719 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:17,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:17,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-04-13 18:00:17,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:00:17,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:18,019 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:00:18,019 INFO L354 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 51 treesize of output 27 [2025-04-13 18:00:18,116 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:18,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803246244] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:18,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:18,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 26 [2025-04-13 18:00:18,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545716053] [2025-04-13 18:00:18,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:18,117 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:00:18,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:18,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:00:18,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:00:18,118 INFO L87 Difference]: Start difference. First operand 343 states and 873 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) [2025-04-13 18:00:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:24,244 INFO L93 Difference]: Finished difference Result 548 states and 1257 transitions. [2025-04-13 18:00:24,245 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:00:24,245 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) Word has length 21 [2025-04-13 18:00:24,245 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:24,247 INFO L225 Difference]: With dead ends: 548 [2025-04-13 18:00:24,247 INFO L226 Difference]: Without dead ends: 540 [2025-04-13 18:00:24,248 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=408, Invalid=2784, Unknown=0, NotChecked=0, Total=3192 [2025-04-13 18:00:24,248 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:24,248 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 18:00:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2025-04-13 18:00:25,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 339. [2025-04-13 18:00:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 2.5473372781065087) internal successors, (861), 338 states have internal predecessors, (861), 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) [2025-04-13 18:00:25,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 861 transitions. [2025-04-13 18:00:25,793 INFO L79 Accepts]: Start accepts. Automaton has 339 states and 861 transitions. Word has length 21 [2025-04-13 18:00:25,793 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:25,793 INFO L485 AbstractCegarLoop]: Abstraction has 339 states and 861 transitions. [2025-04-13 18:00:25,793 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) [2025-04-13 18:00:25,793 INFO L278 IsEmpty]: Start isEmpty. Operand 339 states and 861 transitions. [2025-04-13 18:00:25,794 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:00:25,794 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:25,794 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:25,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2025-04-13 18:00:25,994 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2025-04-13 18:00:25,994 INFO L403 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:25,995 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:25,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1174143210, now seen corresponding path program 159 times [2025-04-13 18:00:25,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:25,995 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24538239] [2025-04-13 18:00:25,995 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:26,007 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:00:26,023 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:26,023 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:00:26,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:26,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:26,307 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24538239] [2025-04-13 18:00:26,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24538239] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:26,307 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468970747] [2025-04-13 18:00:26,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:26,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:26,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:26,309 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:26,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2025-04-13 18:00:26,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:00:26,712 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:26,712 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:00:26,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:26,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:00:26,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:26,901 INFO L354 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 61 treesize of output 37 [2025-04-13 18:00:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:26,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:27,030 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:00:27,030 INFO L354 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 119 treesize of output 63 [2025-04-13 18:00:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:27,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468970747] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:27,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:27,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 24 [2025-04-13 18:00:27,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609629423] [2025-04-13 18:00:27,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:27,108 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:00:27,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:27,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:00:27,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:00:27,108 INFO L87 Difference]: Start difference. First operand 339 states and 861 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 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) [2025-04-13 18:00:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:30,762 INFO L93 Difference]: Finished difference Result 408 states and 994 transitions. [2025-04-13 18:00:30,762 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 18:00:30,762 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 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) Word has length 21 [2025-04-13 18:00:30,762 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:30,764 INFO L225 Difference]: With dead ends: 408 [2025-04-13 18:00:30,765 INFO L226 Difference]: Without dead ends: 389 [2025-04-13 18:00:30,765 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=1088, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 18:00:30,765 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:30,765 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:00:30,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2025-04-13 18:00:32,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 339. [2025-04-13 18:00:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 2.529585798816568) internal successors, (855), 338 states have internal predecessors, (855), 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) [2025-04-13 18:00:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 855 transitions. [2025-04-13 18:00:32,361 INFO L79 Accepts]: Start accepts. Automaton has 339 states and 855 transitions. Word has length 21 [2025-04-13 18:00:32,361 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:32,361 INFO L485 AbstractCegarLoop]: Abstraction has 339 states and 855 transitions. [2025-04-13 18:00:32,361 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 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) [2025-04-13 18:00:32,361 INFO L278 IsEmpty]: Start isEmpty. Operand 339 states and 855 transitions. [2025-04-13 18:00:32,361 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:00:32,361 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:32,361 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:32,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Forceful destruction successful, exit code 0 [2025-04-13 18:00:32,562 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2025-04-13 18:00:32,562 INFO L403 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:32,562 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash 445562936, now seen corresponding path program 160 times [2025-04-13 18:00:32,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:32,563 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563255267] [2025-04-13 18:00:32,563 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:32,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:32,574 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:00:32,584 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:32,584 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:32,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:32,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:32,982 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563255267] [2025-04-13 18:00:32,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563255267] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:32,982 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094433303] [2025-04-13 18:00:32,982 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:32,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:32,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:32,985 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:32,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2025-04-13 18:00:33,360 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:00:33,388 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:33,389 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:33,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:33,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-13 18:00:33,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:33,546 INFO L354 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 132 treesize of output 72 [2025-04-13 18:00:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:00:33,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:33,685 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:00:33,685 INFO L354 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 89 treesize of output 49 [2025-04-13 18:00:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:33,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094433303] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:33,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:33,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 21 [2025-04-13 18:00:33,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84307396] [2025-04-13 18:00:33,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:33,765 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:00:33,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:33,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:00:33,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:00:33,765 INFO L87 Difference]: Start difference. First operand 339 states and 855 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 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) [2025-04-13 18:00:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:38,207 INFO L93 Difference]: Finished difference Result 452 states and 1067 transitions. [2025-04-13 18:00:38,207 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:00:38,207 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 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) Word has length 21 [2025-04-13 18:00:38,208 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:38,210 INFO L225 Difference]: With dead ends: 452 [2025-04-13 18:00:38,210 INFO L226 Difference]: Without dead ends: 445 [2025-04-13 18:00:38,210 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:00:38,210 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:38,210 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:00:38,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2025-04-13 18:00:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 339. [2025-04-13 18:00:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 2.5414201183431953) internal successors, (859), 338 states have internal predecessors, (859), 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) [2025-04-13 18:00:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 859 transitions. [2025-04-13 18:00:39,746 INFO L79 Accepts]: Start accepts. Automaton has 339 states and 859 transitions. Word has length 21 [2025-04-13 18:00:39,746 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:39,746 INFO L485 AbstractCegarLoop]: Abstraction has 339 states and 859 transitions. [2025-04-13 18:00:39,746 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 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) [2025-04-13 18:00:39,746 INFO L278 IsEmpty]: Start isEmpty. Operand 339 states and 859 transitions. [2025-04-13 18:00:39,746 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:00:39,746 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:39,746 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:39,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Forceful destruction successful, exit code 0 [2025-04-13 18:00:39,950 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2025-04-13 18:00:39,950 INFO L403 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:39,950 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:39,950 INFO L85 PathProgramCache]: Analyzing trace with hash 531450389, now seen corresponding path program 161 times [2025-04-13 18:00:39,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:39,951 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079394824] [2025-04-13 18:00:39,951 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:39,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:39,962 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:00:39,973 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:39,974 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:39,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:40,269 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079394824] [2025-04-13 18:00:40,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079394824] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:40,269 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615562101] [2025-04-13 18:00:40,269 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:40,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:40,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:40,271 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:40,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2025-04-13 18:00:40,652 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:00:40,694 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:40,694 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:40,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:40,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-04-13 18:00:40,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:40,827 INFO L354 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 132 treesize of output 72 [2025-04-13 18:00:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:40,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:41,042 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:00:41,043 INFO L354 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 53 treesize of output 29 [2025-04-13 18:00:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:41,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615562101] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:41,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:41,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2025-04-13 18:00:41,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898189843] [2025-04-13 18:00:41,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:41,107 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:00:41,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:41,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:00:41,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:00:41,107 INFO L87 Difference]: Start difference. First operand 339 states and 859 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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) [2025-04-13 18:00:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:46,173 INFO L93 Difference]: Finished difference Result 572 states and 1333 transitions. [2025-04-13 18:00:46,173 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 18:00:46,173 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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) Word has length 21 [2025-04-13 18:00:46,173 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:46,175 INFO L225 Difference]: With dead ends: 572 [2025-04-13 18:00:46,175 INFO L226 Difference]: Without dead ends: 552 [2025-04-13 18:00:46,175 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=1643, Unknown=0, NotChecked=0, Total=1892 [2025-04-13 18:00:46,175 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:46,175 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 0 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:00:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-04-13 18:00:47,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 345. [2025-04-13 18:00:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.5348837209302326) internal successors, (872), 344 states have internal predecessors, (872), 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) [2025-04-13 18:00:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 872 transitions. [2025-04-13 18:00:47,283 INFO L79 Accepts]: Start accepts. Automaton has 345 states and 872 transitions. Word has length 21 [2025-04-13 18:00:47,283 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:47,283 INFO L485 AbstractCegarLoop]: Abstraction has 345 states and 872 transitions. [2025-04-13 18:00:47,283 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 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) [2025-04-13 18:00:47,283 INFO L278 IsEmpty]: Start isEmpty. Operand 345 states and 872 transitions. [2025-04-13 18:00:47,283 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:00:47,283 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:47,283 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:47,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Forceful destruction successful, exit code 0 [2025-04-13 18:00:47,484 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:47,484 INFO L403 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:47,484 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:47,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1186893317, now seen corresponding path program 162 times [2025-04-13 18:00:47,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:47,484 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446507507] [2025-04-13 18:00:47,484 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:47,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:47,497 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:00:47,513 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:47,513 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:47,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:47,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:47,774 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446507507] [2025-04-13 18:00:47,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446507507] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:47,774 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721275355] [2025-04-13 18:00:47,774 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:47,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:47,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:47,776 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:47,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2025-04-13 18:00:48,088 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:00:48,111 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:48,111 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:48,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:48,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:00:48,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:48,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:48,330 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:00:48,330 INFO L354 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 53 treesize of output 29 [2025-04-13 18:00:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:48,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721275355] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:48,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:48,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 22 [2025-04-13 18:00:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750659028] [2025-04-13 18:00:48,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:48,372 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:00:48,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:48,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:00:48,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:00:48,372 INFO L87 Difference]: Start difference. First operand 345 states and 872 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 18:00:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:53,308 INFO L93 Difference]: Finished difference Result 574 states and 1312 transitions. [2025-04-13 18:00:53,308 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 18:00:53,308 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) Word has length 21 [2025-04-13 18:00:53,308 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:53,310 INFO L225 Difference]: With dead ends: 574 [2025-04-13 18:00:53,310 INFO L226 Difference]: Without dead ends: 566 [2025-04-13 18:00:53,310 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=331, Invalid=2119, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 18:00:53,310 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:53,310 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:00:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-04-13 18:00:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 345. [2025-04-13 18:00:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.5348837209302326) internal successors, (872), 344 states have internal predecessors, (872), 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) [2025-04-13 18:00:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 872 transitions. [2025-04-13 18:00:54,359 INFO L79 Accepts]: Start accepts. Automaton has 345 states and 872 transitions. Word has length 21 [2025-04-13 18:00:54,359 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:54,359 INFO L485 AbstractCegarLoop]: Abstraction has 345 states and 872 transitions. [2025-04-13 18:00:54,359 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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) [2025-04-13 18:00:54,359 INFO L278 IsEmpty]: Start isEmpty. Operand 345 states and 872 transitions. [2025-04-13 18:00:54,359 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:00:54,359 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:54,359 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:54,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2025-04-13 18:00:54,560 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:54,560 INFO L403 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:54,560 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:54,560 INFO L85 PathProgramCache]: Analyzing trace with hash 633061179, now seen corresponding path program 163 times [2025-04-13 18:00:54,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:54,560 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559725600] [2025-04-13 18:00:54,561 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:54,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:54,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:00:54,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:54,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:54,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:54,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:54,885 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559725600] [2025-04-13 18:00:54,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559725600] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:54,885 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071429391] [2025-04-13 18:00:54,885 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:54,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:54,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:54,886 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:54,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2025-04-13 18:00:55,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:00:55,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:00:55,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:55,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:55,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 18:00:55,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:55,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:55,403 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:00:55,403 INFO L354 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 53 treesize of output 29 [2025-04-13 18:00:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:00:55,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071429391] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:55,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 18:00:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746086409] [2025-04-13 18:00:55,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:55,454 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:00:55,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:55,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:00:55,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:00:55,454 INFO L87 Difference]: Start difference. First operand 345 states and 872 transitions. Second operand has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) [2025-04-13 18:00:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:59,113 INFO L93 Difference]: Finished difference Result 516 states and 1211 transitions. [2025-04-13 18:00:59,113 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:00:59,113 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) Word has length 21 [2025-04-13 18:00:59,113 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:59,115 INFO L225 Difference]: With dead ends: 516 [2025-04-13 18:00:59,115 INFO L226 Difference]: Without dead ends: 502 [2025-04-13 18:00:59,115 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=2786, Unknown=0, NotChecked=0, Total=3192 [2025-04-13 18:00:59,115 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:59,115 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:00:59,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2025-04-13 18:01:00,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 331. [2025-04-13 18:01:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.5) internal successors, (825), 330 states have internal predecessors, (825), 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) [2025-04-13 18:01:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 825 transitions. [2025-04-13 18:01:00,538 INFO L79 Accepts]: Start accepts. Automaton has 331 states and 825 transitions. Word has length 21 [2025-04-13 18:01:00,538 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:00,538 INFO L485 AbstractCegarLoop]: Abstraction has 331 states and 825 transitions. [2025-04-13 18:01:00,538 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) [2025-04-13 18:01:00,538 INFO L278 IsEmpty]: Start isEmpty. Operand 331 states and 825 transitions. [2025-04-13 18:01:00,539 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:01:00,539 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:00,539 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:00,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2025-04-13 18:01:00,739 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:00,739 INFO L403 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:00,740 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:00,740 INFO L85 PathProgramCache]: Analyzing trace with hash 974653326, now seen corresponding path program 164 times [2025-04-13 18:01:00,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:00,740 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087593873] [2025-04-13 18:01:00,740 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:00,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:00,752 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:01:00,764 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:00,764 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:00,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:01,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:01,153 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087593873] [2025-04-13 18:01:01,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087593873] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:01,154 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562147208] [2025-04-13 18:01:01,154 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:01,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:01,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:01,156 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:01,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2025-04-13 18:01:01,537 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:01:01,568 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:01,568 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:01,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:01,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 18:01:01,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:01,720 INFO L354 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 61 treesize of output 37 [2025-04-13 18:01:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:01:01,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:01,868 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:01:01,869 INFO L354 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 113 treesize of output 56 [2025-04-13 18:01:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:01,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562147208] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:01,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:01,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 24 [2025-04-13 18:01:01,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851503600] [2025-04-13 18:01:01,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:01,911 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:01:01,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:01,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:01:01,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:01,911 INFO L87 Difference]: Start difference. First operand 331 states and 825 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 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) [2025-04-13 18:01:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:05,325 INFO L93 Difference]: Finished difference Result 392 states and 946 transitions. [2025-04-13 18:01:05,325 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:01:05,325 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 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) Word has length 21 [2025-04-13 18:01:05,325 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:05,327 INFO L225 Difference]: With dead ends: 392 [2025-04-13 18:01:05,327 INFO L226 Difference]: Without dead ends: 379 [2025-04-13 18:01:05,327 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:01:05,327 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:05,328 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:01:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2025-04-13 18:01:06,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 331. [2025-04-13 18:01:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.487878787878788) internal successors, (821), 330 states have internal predecessors, (821), 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) [2025-04-13 18:01:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 821 transitions. [2025-04-13 18:01:06,915 INFO L79 Accepts]: Start accepts. Automaton has 331 states and 821 transitions. Word has length 21 [2025-04-13 18:01:06,915 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:06,915 INFO L485 AbstractCegarLoop]: Abstraction has 331 states and 821 transitions. [2025-04-13 18:01:06,915 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 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) [2025-04-13 18:01:06,915 INFO L278 IsEmpty]: Start isEmpty. Operand 331 states and 821 transitions. [2025-04-13 18:01:06,916 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:01:06,916 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:06,916 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:06,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2025-04-13 18:01:07,116 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:07,116 INFO L403 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:07,117 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:07,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1848394006, now seen corresponding path program 165 times [2025-04-13 18:01:07,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:07,117 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736775852] [2025-04-13 18:01:07,117 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:07,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:07,128 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:01:07,139 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 21 statements. [2025-04-13 18:01:07,140 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:01:07,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:07,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:07,446 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736775852] [2025-04-13 18:01:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736775852] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:07,446 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703997828] [2025-04-13 18:01:07,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:07,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:07,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:07,450 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:07,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2025-04-13 18:01:07,840 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:01:07,868 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 21 statements. [2025-04-13 18:01:07,868 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:01:07,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:07,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:01:07,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:08,104 INFO L354 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 61 treesize of output 37 [2025-04-13 18:01:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:08,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:08,241 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:01:08,242 INFO L354 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 83 treesize of output 42 [2025-04-13 18:01:08,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:08,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703997828] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:08,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:08,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 24 [2025-04-13 18:01:08,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842585925] [2025-04-13 18:01:08,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:08,279 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:01:08,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:08,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:01:08,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:08,279 INFO L87 Difference]: Start difference. First operand 331 states and 821 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2025-04-13 18:01:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:12,571 INFO L93 Difference]: Finished difference Result 442 states and 1028 transitions. [2025-04-13 18:01:12,572 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:01:12,572 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 18:01:12,572 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:12,574 INFO L225 Difference]: With dead ends: 442 [2025-04-13 18:01:12,574 INFO L226 Difference]: Without dead ends: 431 [2025-04-13 18:01:12,574 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=269, Invalid=1537, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:01:12,574 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 142 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:12,574 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 0 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:01:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2025-04-13 18:01:14,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 331. [2025-04-13 18:01:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.4757575757575756) internal successors, (817), 330 states have internal predecessors, (817), 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) [2025-04-13 18:01:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 817 transitions. [2025-04-13 18:01:14,118 INFO L79 Accepts]: Start accepts. Automaton has 331 states and 817 transitions. Word has length 21 [2025-04-13 18:01:14,118 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:14,118 INFO L485 AbstractCegarLoop]: Abstraction has 331 states and 817 transitions. [2025-04-13 18:01:14,118 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2025-04-13 18:01:14,118 INFO L278 IsEmpty]: Start isEmpty. Operand 331 states and 817 transitions. [2025-04-13 18:01:14,118 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:01:14,118 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:14,118 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:14,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2025-04-13 18:01:14,319 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2025-04-13 18:01:14,319 INFO L403 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:14,319 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1587104114, now seen corresponding path program 166 times [2025-04-13 18:01:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:14,320 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941092029] [2025-04-13 18:01:14,320 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:14,334 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:01:14,347 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:14,347 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:14,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:14,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:14,829 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941092029] [2025-04-13 18:01:14,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941092029] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:14,829 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027932440] [2025-04-13 18:01:14,829 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:14,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:14,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:14,831 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:14,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2025-04-13 18:01:15,216 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:01:15,244 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:15,245 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:15,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:15,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:01:15,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:15,500 INFO L354 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 132 treesize of output 72 [2025-04-13 18:01:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:01:15,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:15,703 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:01:15,704 INFO L354 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 113 treesize of output 56 [2025-04-13 18:01:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:15,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027932440] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:15,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:15,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 28 [2025-04-13 18:01:15,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509004314] [2025-04-13 18:01:15,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:15,756 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 18:01:15,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:15,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 18:01:15,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:01:15,757 INFO L87 Difference]: Start difference. First operand 331 states and 817 transitions. Second operand has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) [2025-04-13 18:01:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:21,164 INFO L93 Difference]: Finished difference Result 488 states and 1108 transitions. [2025-04-13 18:01:21,165 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 18:01:21,165 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 18:01:21,165 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:21,167 INFO L225 Difference]: With dead ends: 488 [2025-04-13 18:01:21,168 INFO L226 Difference]: Without dead ends: 477 [2025-04-13 18:01:21,168 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=343, Invalid=2107, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 18:01:21,168 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 229 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:21,169 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 0 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:01:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2025-04-13 18:01:22,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 331. [2025-04-13 18:01:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.463636363636364) internal successors, (813), 330 states have internal predecessors, (813), 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) [2025-04-13 18:01:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 813 transitions. [2025-04-13 18:01:22,738 INFO L79 Accepts]: Start accepts. Automaton has 331 states and 813 transitions. Word has length 21 [2025-04-13 18:01:22,738 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:22,738 INFO L485 AbstractCegarLoop]: Abstraction has 331 states and 813 transitions. [2025-04-13 18:01:22,738 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) [2025-04-13 18:01:22,738 INFO L278 IsEmpty]: Start isEmpty. Operand 331 states and 813 transitions. [2025-04-13 18:01:22,738 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:01:22,738 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:22,738 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:22,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2025-04-13 18:01:22,943 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:22,943 INFO L403 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:22,943 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:22,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1697926634, now seen corresponding path program 167 times [2025-04-13 18:01:22,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:22,943 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154283879] [2025-04-13 18:01:22,943 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:22,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:22,957 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:01:22,966 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:22,967 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:22,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:23,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:23,319 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154283879] [2025-04-13 18:01:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154283879] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:23,319 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161792218] [2025-04-13 18:01:23,319 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:23,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:23,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:23,321 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:23,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2025-04-13 18:01:23,708 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:01:23,796 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:23,796 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:23,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:23,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 18:01:23,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:23,957 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:01:23,957 INFO L354 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 115 treesize of output 67 [2025-04-13 18:01:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:24,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:24,202 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:01:24,202 INFO L354 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 83 treesize of output 42 [2025-04-13 18:01:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:24,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161792218] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:24,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:24,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2025-04-13 18:01:24,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685946628] [2025-04-13 18:01:24,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:24,245 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:24,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:24,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:24,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:01:24,246 INFO L87 Difference]: Start difference. First operand 331 states and 813 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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) [2025-04-13 18:01:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:28,949 INFO L93 Difference]: Finished difference Result 468 states and 1085 transitions. [2025-04-13 18:01:28,949 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 18:01:28,949 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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) Word has length 21 [2025-04-13 18:01:28,949 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:28,951 INFO L225 Difference]: With dead ends: 468 [2025-04-13 18:01:28,951 INFO L226 Difference]: Without dead ends: 461 [2025-04-13 18:01:28,952 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:01:28,952 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:28,952 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:01:28,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2025-04-13 18:01:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 331. [2025-04-13 18:01:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.4575757575757575) internal successors, (811), 330 states have internal predecessors, (811), 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) [2025-04-13 18:01:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 811 transitions. [2025-04-13 18:01:30,403 INFO L79 Accepts]: Start accepts. Automaton has 331 states and 811 transitions. Word has length 21 [2025-04-13 18:01:30,404 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:30,404 INFO L485 AbstractCegarLoop]: Abstraction has 331 states and 811 transitions. [2025-04-13 18:01:30,404 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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) [2025-04-13 18:01:30,404 INFO L278 IsEmpty]: Start isEmpty. Operand 331 states and 811 transitions. [2025-04-13 18:01:30,404 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:01:30,404 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:30,404 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:30,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2025-04-13 18:01:30,607 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2025-04-13 18:01:30,607 INFO L403 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:30,607 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:30,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1664625101, now seen corresponding path program 168 times [2025-04-13 18:01:30,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:30,607 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379908988] [2025-04-13 18:01:30,609 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:30,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:30,621 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:01:30,633 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:30,633 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:01:30,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:31,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:31,130 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379908988] [2025-04-13 18:01:31,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379908988] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:31,130 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834335270] [2025-04-13 18:01:31,130 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:31,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:31,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:31,132 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:31,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2025-04-13 18:01:31,515 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:01:31,545 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:31,545 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:01:31,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:31,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:01:31,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:31,804 INFO L354 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 112 treesize of output 72 [2025-04-13 18:01:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:31,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:32,003 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:01:32,004 INFO L354 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 44 treesize of output 19 [2025-04-13 18:01:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:32,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834335270] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:32,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:32,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 27 [2025-04-13 18:01:32,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551001601] [2025-04-13 18:01:32,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:32,043 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 18:01:32,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:32,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 18:01:32,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:01:32,043 INFO L87 Difference]: Start difference. First operand 331 states and 811 transitions. Second operand has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 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) [2025-04-13 18:01:35,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:35,310 INFO L93 Difference]: Finished difference Result 431 states and 1015 transitions. [2025-04-13 18:01:35,310 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 18:01:35,310 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 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) Word has length 21 [2025-04-13 18:01:35,310 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:35,312 INFO L225 Difference]: With dead ends: 431 [2025-04-13 18:01:35,312 INFO L226 Difference]: Without dead ends: 322 [2025-04-13 18:01:35,312 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=270, Invalid=1452, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:01:35,312 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:35,313 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:01:35,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2025-04-13 18:01:35,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 184. [2025-04-13 18:01:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.180327868852459) internal successors, (399), 183 states have internal predecessors, (399), 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) [2025-04-13 18:01:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 399 transitions. [2025-04-13 18:01:35,877 INFO L79 Accepts]: Start accepts. Automaton has 184 states and 399 transitions. Word has length 21 [2025-04-13 18:01:35,877 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:35,877 INFO L485 AbstractCegarLoop]: Abstraction has 184 states and 399 transitions. [2025-04-13 18:01:35,877 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 27 states have internal predecessors, (49), 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) [2025-04-13 18:01:35,877 INFO L278 IsEmpty]: Start isEmpty. Operand 184 states and 399 transitions. [2025-04-13 18:01:35,877 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:01:35,877 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:35,877 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:35,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2025-04-13 18:01:36,078 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2025-04-13 18:01:36,078 INFO L403 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:36,078 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:36,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1612039181, now seen corresponding path program 169 times [2025-04-13 18:01:36,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:36,078 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67703306] [2025-04-13 18:01:36,078 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:36,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:36,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:01:36,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:36,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:36,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:36,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:36,410 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67703306] [2025-04-13 18:01:36,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67703306] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:36,410 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997834676] [2025-04-13 18:01:36,410 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:36,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:36,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:36,412 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:36,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2025-04-13 18:01:36,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:01:36,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:36,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:36,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:36,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 18:01:36,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:36,894 INFO L354 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 107 treesize of output 59 [2025-04-13 18:01:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:36,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:37,048 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:01:37,048 INFO L354 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 44 treesize of output 19 [2025-04-13 18:01:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:37,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997834676] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:37,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:37,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-04-13 18:01:37,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667868444] [2025-04-13 18:01:37,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:37,080 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:01:37,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:37,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:01:37,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:01:37,080 INFO L87 Difference]: Start difference. First operand 184 states and 399 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2025-04-13 18:01:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:39,099 INFO L93 Difference]: Finished difference Result 227 states and 465 transitions. [2025-04-13 18:01:39,099 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 18:01:39,099 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 18:01:39,099 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:39,100 INFO L225 Difference]: With dead ends: 227 [2025-04-13 18:01:39,100 INFO L226 Difference]: Without dead ends: 219 [2025-04-13 18:01:39,100 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=1424, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:01:39,101 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:39,101 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 0 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:01:39,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2025-04-13 18:01:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 182. [2025-04-13 18:01:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.1767955801104972) internal successors, (394), 181 states have internal predecessors, (394), 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) [2025-04-13 18:01:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 394 transitions. [2025-04-13 18:01:39,617 INFO L79 Accepts]: Start accepts. Automaton has 182 states and 394 transitions. Word has length 21 [2025-04-13 18:01:39,617 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:39,617 INFO L485 AbstractCegarLoop]: Abstraction has 182 states and 394 transitions. [2025-04-13 18:01:39,617 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2025-04-13 18:01:39,617 INFO L278 IsEmpty]: Start isEmpty. Operand 182 states and 394 transitions. [2025-04-13 18:01:39,617 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:01:39,617 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:39,617 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:39,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2025-04-13 18:01:39,818 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:39,818 INFO L403 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:39,818 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:39,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1075406929, now seen corresponding path program 170 times [2025-04-13 18:01:39,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:39,818 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831479675] [2025-04-13 18:01:39,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:39,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:39,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:01:39,840 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:39,840 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:39,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:40,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:40,083 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831479675] [2025-04-13 18:01:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831479675] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:40,083 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371411157] [2025-04-13 18:01:40,083 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:40,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:40,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:40,085 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:40,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2025-04-13 18:01:40,405 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:01:40,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:40,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:40,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:40,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:01:40,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:40,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:40,746 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:01:40,747 INFO L354 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 44 treesize of output 19 [2025-04-13 18:01:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:40,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371411157] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:40,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:40,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2025-04-13 18:01:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931734954] [2025-04-13 18:01:40,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:40,778 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:01:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:40,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:01:40,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:40,778 INFO L87 Difference]: Start difference. First operand 182 states and 394 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2025-04-13 18:01:43,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:43,363 INFO L93 Difference]: Finished difference Result 237 states and 486 transitions. [2025-04-13 18:01:43,363 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:01:43,363 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 18:01:43,363 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:43,365 INFO L225 Difference]: With dead ends: 237 [2025-04-13 18:01:43,365 INFO L226 Difference]: Without dead ends: 229 [2025-04-13 18:01:43,365 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=221, Invalid=1185, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:01:43,365 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:43,365 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:01:43,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-04-13 18:01:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 180. [2025-04-13 18:01:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.1731843575418996) internal successors, (389), 179 states have internal predecessors, (389), 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) [2025-04-13 18:01:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 389 transitions. [2025-04-13 18:01:44,187 INFO L79 Accepts]: Start accepts. Automaton has 180 states and 389 transitions. Word has length 21 [2025-04-13 18:01:44,187 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:44,187 INFO L485 AbstractCegarLoop]: Abstraction has 180 states and 389 transitions. [2025-04-13 18:01:44,187 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2025-04-13 18:01:44,187 INFO L278 IsEmpty]: Start isEmpty. Operand 180 states and 389 transitions. [2025-04-13 18:01:44,187 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:01:44,187 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:44,187 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:44,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Forceful destruction successful, exit code 0 [2025-04-13 18:01:44,388 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:44,388 INFO L403 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:44,388 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1513109581, now seen corresponding path program 171 times [2025-04-13 18:01:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:44,389 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287036035] [2025-04-13 18:01:44,389 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:44,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:44,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:01:44,413 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 21 statements. [2025-04-13 18:01:44,413 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:01:44,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:44,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:44,732 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287036035] [2025-04-13 18:01:44,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287036035] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:44,732 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404344118] [2025-04-13 18:01:44,732 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:44,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:44,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:44,735 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:44,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2025-04-13 18:01:45,127 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:01:45,156 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 20 of 21 statements. [2025-04-13 18:01:45,157 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:01:45,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:45,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-04-13 18:01:45,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:45,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:45,597 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:01:45,597 INFO L354 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 44 treesize of output 19 [2025-04-13 18:01:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:45,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404344118] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:45,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:45,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2025-04-13 18:01:45,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772665543] [2025-04-13 18:01:45,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:45,635 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:01:45,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:45,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:01:45,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:45,635 INFO L87 Difference]: Start difference. First operand 180 states and 389 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2025-04-13 18:01:47,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:47,726 INFO L93 Difference]: Finished difference Result 214 states and 446 transitions. [2025-04-13 18:01:47,726 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:01:47,726 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) Word has length 21 [2025-04-13 18:01:47,726 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:47,728 INFO L225 Difference]: With dead ends: 214 [2025-04-13 18:01:47,728 INFO L226 Difference]: Without dead ends: 206 [2025-04-13 18:01:47,728 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:01:47,729 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:47,729 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 0 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:01:47,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-04-13 18:01:48,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 178. [2025-04-13 18:01:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.169491525423729) internal successors, (384), 177 states have internal predecessors, (384), 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) [2025-04-13 18:01:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 384 transitions. [2025-04-13 18:01:48,531 INFO L79 Accepts]: Start accepts. Automaton has 178 states and 384 transitions. Word has length 21 [2025-04-13 18:01:48,531 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:48,531 INFO L485 AbstractCegarLoop]: Abstraction has 178 states and 384 transitions. [2025-04-13 18:01:48,532 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2025-04-13 18:01:48,532 INFO L278 IsEmpty]: Start isEmpty. Operand 178 states and 384 transitions. [2025-04-13 18:01:48,532 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:01:48,532 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:48,532 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:48,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2025-04-13 18:01:48,732 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:48,733 INFO L403 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:48,733 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1465700411, now seen corresponding path program 172 times [2025-04-13 18:01:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:48,733 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765810564] [2025-04-13 18:01:48,733 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:48,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:48,747 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:01:48,757 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:48,757 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:48,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:49,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:49,096 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765810564] [2025-04-13 18:01:49,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765810564] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:49,096 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305619810] [2025-04-13 18:01:49,096 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:49,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:49,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:49,098 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:49,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2025-04-13 18:01:49,494 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:01:49,524 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:01:49,525 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:49,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:49,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-04-13 18:01:49,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:01:49,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:49,770 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:01:49,770 INFO L354 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 44 treesize of output 19 [2025-04-13 18:01:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:49,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305619810] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:49,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:49,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2025-04-13 18:01:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62503273] [2025-04-13 18:01:49,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:49,803 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:01:49,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:49,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:01:49,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:01:49,804 INFO L87 Difference]: Start difference. First operand 178 states and 384 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 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) [2025-04-13 18:01:51,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:51,833 INFO L93 Difference]: Finished difference Result 202 states and 423 transitions. [2025-04-13 18:01:51,834 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 18:01:51,834 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 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) Word has length 21 [2025-04-13 18:01:51,834 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:51,835 INFO L225 Difference]: With dead ends: 202 [2025-04-13 18:01:51,835 INFO L226 Difference]: Without dead ends: 194 [2025-04-13 18:01:51,836 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:01:51,836 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:51,836 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:01:51,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-04-13 18:01:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 166. [2025-04-13 18:01:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.1575757575757577) internal successors, (356), 165 states have internal predecessors, (356), 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) [2025-04-13 18:01:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 356 transitions. [2025-04-13 18:01:52,536 INFO L79 Accepts]: Start accepts. Automaton has 166 states and 356 transitions. Word has length 21 [2025-04-13 18:01:52,536 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:52,536 INFO L485 AbstractCegarLoop]: Abstraction has 166 states and 356 transitions. [2025-04-13 18:01:52,536 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 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) [2025-04-13 18:01:52,536 INFO L278 IsEmpty]: Start isEmpty. Operand 166 states and 356 transitions. [2025-04-13 18:01:52,537 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-13 18:01:52,537 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:52,537 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:52,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Ended with exit code 0 [2025-04-13 18:01:52,737 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:52,737 INFO L403 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:52,738 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:52,738 INFO L85 PathProgramCache]: Analyzing trace with hash -952673529, now seen corresponding path program 173 times [2025-04-13 18:01:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:52,738 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566437331] [2025-04-13 18:01:52,738 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:52,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:52,750 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 3 equivalence classes. [2025-04-13 18:01:52,764 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:01:52,764 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:52,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:53,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:53,418 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566437331] [2025-04-13 18:01:53,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566437331] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:53,418 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298023859] [2025-04-13 18:01:53,418 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:53,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:53,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:53,420 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:53,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2025-04-13 18:01:53,725 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 3 equivalence classes. [2025-04-13 18:01:53,768 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:01:53,768 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:53,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:53,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-13 18:01:53,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:54,241 INFO L354 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 210 treesize of output 120 [2025-04-13 18:01:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:54,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:55,260 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:01:55,260 INFO L354 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 352 treesize of output 216 [2025-04-13 18:01:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:55,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298023859] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:55,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:55,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2025-04-13 18:01:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283208418] [2025-04-13 18:01:55,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:55,424 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-13 18:01:55,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:55,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-13 18:01:55,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:01:55,424 INFO L87 Difference]: Start difference. First operand 166 states and 356 transitions. Second operand has 32 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 32 states have internal predecessors, (52), 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) [2025-04-13 18:01:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:57,114 INFO L93 Difference]: Finished difference Result 183 states and 380 transitions. [2025-04-13 18:01:57,114 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 18:01:57,114 INFO L79 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 32 states have internal predecessors, (52), 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) Word has length 22 [2025-04-13 18:01:57,114 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:57,115 INFO L225 Difference]: With dead ends: 183 [2025-04-13 18:01:57,115 INFO L226 Difference]: Without dead ends: 161 [2025-04-13 18:01:57,116 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=266, Invalid=1216, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:01:57,116 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 154 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:57,116 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 0 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:01:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-04-13 18:01:57,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2025-04-13 18:01:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.15625) internal successors, (345), 160 states have internal predecessors, (345), 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) [2025-04-13 18:01:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 345 transitions. [2025-04-13 18:01:57,598 INFO L79 Accepts]: Start accepts. Automaton has 161 states and 345 transitions. Word has length 22 [2025-04-13 18:01:57,598 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:57,598 INFO L485 AbstractCegarLoop]: Abstraction has 161 states and 345 transitions. [2025-04-13 18:01:57,598 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 32 states have internal predecessors, (52), 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) [2025-04-13 18:01:57,598 INFO L278 IsEmpty]: Start isEmpty. Operand 161 states and 345 transitions. [2025-04-13 18:01:57,598 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-13 18:01:57,598 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:57,598 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:57,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Ended with exit code 0 [2025-04-13 18:01:57,798 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:57,799 INFO L403 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:57,799 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1265788067, now seen corresponding path program 174 times [2025-04-13 18:01:57,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:57,799 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198158109] [2025-04-13 18:01:57,799 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:57,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:57,808 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 3 equivalence classes. [2025-04-13 18:01:57,821 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:01:57,821 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:01:57,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:58,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:58,668 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198158109] [2025-04-13 18:01:58,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198158109] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:58,668 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834311952] [2025-04-13 18:01:58,668 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:58,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:58,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:58,670 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:58,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2025-04-13 18:01:58,981 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 3 equivalence classes. [2025-04-13 18:01:59,006 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:01:59,006 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:01:59,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:59,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 18:01:59,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:59,531 INFO L354 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 180 treesize of output 120 [2025-04-13 18:01:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:01:59,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:00,803 INFO L325 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-04-13 18:02:00,804 INFO L354 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 260 treesize of output 163 [2025-04-13 18:02:00,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:02:00,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834311952] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:00,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:00,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 35 [2025-04-13 18:02:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828485793] [2025-04-13 18:02:00,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:00,894 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-04-13 18:02:00,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:00,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-04-13 18:02:00,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 18:02:00,895 INFO L87 Difference]: Start difference. First operand 161 states and 345 transitions. Second operand has 36 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 36 states have internal predecessors, (59), 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) [2025-04-13 18:02:05,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:05,238 INFO L93 Difference]: Finished difference Result 215 states and 427 transitions. [2025-04-13 18:02:05,239 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:02:05,239 INFO L79 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 36 states have internal predecessors, (59), 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) Word has length 22 [2025-04-13 18:02:05,239 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:05,241 INFO L225 Difference]: With dead ends: 215 [2025-04-13 18:02:05,241 INFO L226 Difference]: Without dead ends: 198 [2025-04-13 18:02:05,241 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=395, Invalid=2575, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 18:02:05,242 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:05,242 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 0 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:02:05,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-04-13 18:02:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2025-04-13 18:02:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 2.1481481481481484) internal successors, (348), 162 states have internal predecessors, (348), 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) [2025-04-13 18:02:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 348 transitions. [2025-04-13 18:02:06,062 INFO L79 Accepts]: Start accepts. Automaton has 163 states and 348 transitions. Word has length 22 [2025-04-13 18:02:06,062 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:06,062 INFO L485 AbstractCegarLoop]: Abstraction has 163 states and 348 transitions. [2025-04-13 18:02:06,062 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 36 states have internal predecessors, (59), 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) [2025-04-13 18:02:06,062 INFO L278 IsEmpty]: Start isEmpty. Operand 163 states and 348 transitions. [2025-04-13 18:02:06,062 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-13 18:02:06,062 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:06,062 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:06,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Ended with exit code 0 [2025-04-13 18:02:06,263 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:06,263 INFO L403 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:06,263 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:06,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2118121491, now seen corresponding path program 175 times [2025-04-13 18:02:06,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:06,264 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432725546] [2025-04-13 18:02:06,264 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:06,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:06,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-13 18:02:06,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:02:06,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:06,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:07,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:07,778 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432725546] [2025-04-13 18:02:07,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432725546] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:07,778 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29379723] [2025-04-13 18:02:07,778 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:07,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:07,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:07,780 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:07,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2025-04-13 18:02:08,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-13 18:02:08,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:02:08,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:08,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:08,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-04-13 18:02:08,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:08,923 INFO L354 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 187 treesize of output 109 [2025-04-13 18:02:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:02:09,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:10,622 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:02:10,622 INFO L354 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 297 treesize of output 189 [2025-04-13 18:02:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:02:10,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29379723] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:10,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:10,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 36 [2025-04-13 18:02:10,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519601008] [2025-04-13 18:02:10,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:10,896 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 18:02:10,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:10,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 18:02:10,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1212, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:02:10,897 INFO L87 Difference]: Start difference. First operand 163 states and 348 transitions. Second operand has 37 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 37 states have internal predecessors, (58), 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) [2025-04-13 18:02:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:16,877 INFO L93 Difference]: Finished difference Result 222 states and 428 transitions. [2025-04-13 18:02:16,877 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:02:16,878 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 37 states have internal predecessors, (58), 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) Word has length 22 [2025-04-13 18:02:16,878 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:16,879 INFO L225 Difference]: With dead ends: 222 [2025-04-13 18:02:16,879 INFO L226 Difference]: Without dead ends: 208 [2025-04-13 18:02:16,880 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=390, Invalid=3032, Unknown=0, NotChecked=0, Total=3422 [2025-04-13 18:02:16,880 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:16,880 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 18:02:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-04-13 18:02:17,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 165. [2025-04-13 18:02:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.1402439024390243) internal successors, (351), 164 states have internal predecessors, (351), 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) [2025-04-13 18:02:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 351 transitions. [2025-04-13 18:02:17,644 INFO L79 Accepts]: Start accepts. Automaton has 165 states and 351 transitions. Word has length 22 [2025-04-13 18:02:17,644 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:17,644 INFO L485 AbstractCegarLoop]: Abstraction has 165 states and 351 transitions. [2025-04-13 18:02:17,645 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 37 states have internal predecessors, (58), 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) [2025-04-13 18:02:17,645 INFO L278 IsEmpty]: Start isEmpty. Operand 165 states and 351 transitions. [2025-04-13 18:02:17,645 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-13 18:02:17,645 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:17,645 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:17,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Forceful destruction successful, exit code 0 [2025-04-13 18:02:17,845 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2025-04-13 18:02:17,846 INFO L403 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:17,846 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash -625330525, now seen corresponding path program 176 times [2025-04-13 18:02:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:17,846 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677156311] [2025-04-13 18:02:17,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:17,861 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-13 18:02:17,877 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:02:17,877 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:17,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:19,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:19,299 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677156311] [2025-04-13 18:02:19,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677156311] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:19,299 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945329119] [2025-04-13 18:02:19,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:19,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:19,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:19,302 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:19,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2025-04-13 18:02:19,739 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-04-13 18:02:19,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:02:19,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:19,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:19,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 18:02:19,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:20,491 INFO L354 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 177 treesize of output 117 [2025-04-13 18:02:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:02:20,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:21,755 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:02:21,756 INFO L354 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 267 treesize of output 175 [2025-04-13 18:02:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:02:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945329119] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:21,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:21,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 34 [2025-04-13 18:02:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129016840] [2025-04-13 18:02:21,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:21,924 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-13 18:02:21,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:21,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-13 18:02:21,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1047, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:02:21,925 INFO L87 Difference]: Start difference. First operand 165 states and 351 transitions. Second operand has 35 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 35 states have internal predecessors, (59), 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) [2025-04-13 18:02:24,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:24,681 INFO L93 Difference]: Finished difference Result 203 states and 403 transitions. [2025-04-13 18:02:24,681 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 18:02:24,681 INFO L79 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 35 states have internal predecessors, (59), 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) Word has length 22 [2025-04-13 18:02:24,681 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:24,683 INFO L225 Difference]: With dead ends: 203 [2025-04-13 18:02:24,683 INFO L226 Difference]: Without dead ends: 192 [2025-04-13 18:02:24,683 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=355, Invalid=2297, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 18:02:24,683 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 127 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:24,683 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 0 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:02:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-04-13 18:02:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 165. [2025-04-13 18:02:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.1402439024390243) internal successors, (351), 164 states have internal predecessors, (351), 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) [2025-04-13 18:02:25,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 351 transitions. [2025-04-13 18:02:25,275 INFO L79 Accepts]: Start accepts. Automaton has 165 states and 351 transitions. Word has length 22 [2025-04-13 18:02:25,276 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:25,276 INFO L485 AbstractCegarLoop]: Abstraction has 165 states and 351 transitions. [2025-04-13 18:02:25,276 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 35 states have internal predecessors, (59), 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) [2025-04-13 18:02:25,276 INFO L278 IsEmpty]: Start isEmpty. Operand 165 states and 351 transitions. [2025-04-13 18:02:25,276 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-13 18:02:25,276 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:25,276 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:25,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Forceful destruction successful, exit code 0 [2025-04-13 18:02:25,476 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:25,476 INFO L403 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:25,477 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash -572744605, now seen corresponding path program 177 times [2025-04-13 18:02:25,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:25,477 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125194871] [2025-04-13 18:02:25,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:25,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:25,487 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 3 equivalence classes. [2025-04-13 18:02:25,501 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:02:25,501 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:25,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:02:26,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:26,648 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125194871] [2025-04-13 18:02:26,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125194871] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:26,649 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317931395] [2025-04-13 18:02:26,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:26,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:26,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:26,660 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:26,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2025-04-13 18:02:27,027 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 3 equivalence classes. [2025-04-13 18:02:27,059 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 22 of 22 statements. [2025-04-13 18:02:27,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:27,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:27,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-13 18:02:27,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:27,517 INFO L354 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 161 treesize of output 105 [2025-04-13 18:02:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:02:27,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:29,024 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-13 18:02:29,025 INFO L354 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 287 treesize of output 191 [2025-04-13 18:02:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-04-13 18:02:29,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317931395] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:29,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:29,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 35 [2025-04-13 18:02:29,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744265215] [2025-04-13 18:02:29,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:29,227 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-04-13 18:02:29,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:29,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-04-13 18:02:29,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1112, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 18:02:29,228 INFO L87 Difference]: Start difference. First operand 165 states and 351 transitions. Second operand has 36 states, 35 states have (on average 1.7142857142857142) internal successors, (60), 36 states have internal predecessors, (60), 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) Received shutdown request... [2025-04-13 18:02:31,158 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 18:02:31,159 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=258, Invalid=1548, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:02:31,159 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:31,159 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 0 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:02:31,164 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 18:02:31,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2025-04-13 18:02:31,181 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:02:31,181 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:02:31,365 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2025-04-13 18:02:31,365 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (165states) and FLOYD_HOARE automaton (currently 13 states, 36 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-3-4-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. [2025-04-13 18:02:31,367 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 18:02:31,367 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 18:02:31,370 INFO L422 BasicCegarLoop]: Path program histogram: [177, 5, 5, 2, 1] [2025-04-13 18:02:31,372 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 18:02:31,372 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 18:02:31,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 06:02:31 BasicIcfg [2025-04-13 18:02:31,374 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 18:02:31,375 INFO L158 Benchmark]: Toolchain (without parser) took 867993.89ms. Allocated memory was 155.2MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 108.8MB in the beginning and 383.9MB in the end (delta: -275.2MB). Peak memory consumption was 696.9MB. Max. memory is 8.0GB. [2025-04-13 18:02:31,375 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:02:31,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.20ms. Allocated memory is still 155.2MB. Free memory was 107.9MB in the beginning and 92.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2025-04-13 18:02:31,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.33ms. Allocated memory is still 155.2MB. Free memory was 92.2MB in the beginning and 89.7MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:02:31,375 INFO L158 Benchmark]: Boogie Preprocessor took 52.62ms. Allocated memory is still 155.2MB. Free memory was 89.7MB in the beginning and 87.3MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 18:02:31,375 INFO L158 Benchmark]: RCFGBuilder took 733.77ms. Allocated memory is still 155.2MB. Free memory was 87.3MB in the beginning and 61.6MB in the end (delta: 25.7MB). Peak memory consumption was 70.2MB. Max. memory is 8.0GB. [2025-04-13 18:02:31,375 INFO L158 Benchmark]: TraceAbstraction took 866874.74ms. Allocated memory was 155.2MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 61.6MB in the beginning and 383.9MB in the end (delta: -322.3MB). Peak memory consumption was 652.0MB. Max. memory is 8.0GB. [2025-04-13 18:02:31,376 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 284.20ms. Allocated memory is still 155.2MB. Free memory was 107.9MB in the beginning and 92.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.33ms. Allocated memory is still 155.2MB. Free memory was 92.2MB in the beginning and 89.7MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 52.62ms. Allocated memory is still 155.2MB. Free memory was 89.7MB in the beginning and 87.3MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 733.77ms. Allocated memory is still 155.2MB. Free memory was 87.3MB in the beginning and 61.6MB in the end (delta: 25.7MB). Peak memory consumption was 70.2MB. Max. memory is 8.0GB. * TraceAbstraction took 866874.74ms. Allocated memory was 155.2MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 61.6MB in the beginning and 383.9MB in the end (delta: -322.3MB). Peak memory consumption was 652.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (165states) and FLOYD_HOARE automaton (currently 13 states, 36 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-3-4-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (165states) and FLOYD_HOARE automaton (currently 13 states, 36 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-3-4-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (165states) and FLOYD_HOARE automaton (currently 13 states, 36 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-21-3-4-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 25 locations, 29 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 866.8s, OverallIterations: 190, TraceHistogramMax: 3, PathProgramHistogramMax: 177, EmptinessCheckTime: 0.1s, AutomataDifference: 495.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21282 SdHoareTripleChecker+Valid, 75.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21282 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 64.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4355 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 172899 IncrementalHoareTripleChecker+Invalid, 177254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4355 mSolverCounterUnsat, 0 mSDtfsCounter, 172899 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14134 GetRequests, 6571 SyntacticMatches, 6 SemanticMatches, 7556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80616 ImplicationChecksByTransitivity, 170.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=919occurred in iteration=98, InterpolantAutomatonStates: 4690, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 125.2s AutomataMinimizationTime, 189 MinimizatonAttempts, 21611 StatesRemovedByMinimization, 184 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.2s SsaConstructionTime, 6.2s SatisfiabilityAnalysisTime, 167.1s InterpolantComputationTime, 7498 NumberOfCodeBlocks, 7469 NumberOfCodeBlocksAsserted, 857 NumberOfCheckSat, 10620 ConstructedInterpolants, 2 QuantifiedInterpolants, 153275 SizeOfPredicates, 3700 NumberOfNonLiveVariables, 40711 ConjunctsInSsa, 5617 ConjunctsInUnsatCore, 555 InterpolantComputations, 12 PerfectInterpolantSequences, 2916/7866 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