/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/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 17:06:38,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 17:06:38,737 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 17:06:38,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 17:06:38,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 17:06:38,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 17:06:38,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 17:06:38,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 17:06:38,761 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 17:06:38,762 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 17:06:38,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 17:06:38,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 17:06:38,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 17:06:38,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 17:06:38,763 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 17:06:38,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 17:06:38,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 17:06:38,763 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 17:06:38,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 17:06:38,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 17:06:38,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 17:06:38,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 17:06:38,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 17:06:38,764 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:06:38,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:06:38,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:06:38,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 17:06:38,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 17:06:38,765 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 17:06:38,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 17:06:38,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 17:06:38,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 17:06:38,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 17:06:38,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 17:06:38,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 17:06:38,765 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 17:06:38,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 17:06:38,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 17:06:38,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 17:06:38,982 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 17:06:38,982 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 17:06:38,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2025-04-13 17:06:40,297 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4025b0623/bee53e2177ef40e597b8640a02237e26/FLAGc1916c271 [2025-04-13 17:06:40,541 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 17:06:40,542 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2025-04-13 17:06:40,556 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4025b0623/bee53e2177ef40e597b8640a02237e26/FLAGc1916c271 [2025-04-13 17:06:41,297 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4025b0623/bee53e2177ef40e597b8640a02237e26 [2025-04-13 17:06:41,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 17:06:41,300 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 17:06:41,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 17:06:41,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 17:06:41,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 17:06:41,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ecb8c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41, skipping insertion in model container [2025-04-13 17:06:41,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,339 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 17:06:41,588 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2025-04-13 17:06:41,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:06:41,600 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 17:06:41,647 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2025-04-13 17:06:41,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:06:41,673 INFO L204 MainTranslator]: Completed translation [2025-04-13 17:06:41,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41 WrapperNode [2025-04-13 17:06:41,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 17:06:41,675 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 17:06:41,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 17:06:41,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 17:06:41,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,703 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2025-04-13 17:06:41,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 17:06:41,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 17:06:41,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 17:06:41,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 17:06:41,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,712 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,725 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 17:06:41,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,728 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 17:06:41,734 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 17:06:41,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 17:06:41,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 17:06:41,735 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (1/1) ... [2025-04-13 17:06:41,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:06:41,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:06:41,761 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 17:06:41,763 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 17:06:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-13 17:06:41,781 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-13 17:06:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-13 17:06:41,781 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-13 17:06:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 17:06:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 17:06:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 17:06:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 17:06:41,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 17:06:41,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 17:06:41,782 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 17:06:41,873 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 17:06:41,875 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 17:06:41,976 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 17:06:41,976 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 17:06:41,976 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 17:06:42,046 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:06:42,049 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:06:42,052 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 17:06:42,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:06:42 BoogieIcfgContainer [2025-04-13 17:06:42,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 17:06:42,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 17:06:42,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 17:06:42,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 17:06:42,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 05:06:41" (1/3) ... [2025-04-13 17:06:42,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227db330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:06:42, skipping insertion in model container [2025-04-13 17:06:42,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:06:41" (2/3) ... [2025-04-13 17:06:42,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227db330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:06:42, skipping insertion in model container [2025-04-13 17:06:42,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:06:42" (3/3) ... [2025-04-13 17:06:42,060 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2025-04-13 17:06:42,069 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 17:06:42,070 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-1.i that has 3 procedures, 18 locations, 19 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-13 17:06:42,071 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 17:06:42,096 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 17:06:42,118 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 21 transitions, 50 flow [2025-04-13 17:06:42,143 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 90 states, 89 states have (on average 3.191011235955056) internal successors, (284), 89 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 17:06:42,162 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:06:42,170 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;@65021a3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:06:42,170 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 17:06:42,172 INFO L278 IsEmpty]: Start isEmpty. Operand has 90 states, 89 states have (on average 3.191011235955056) internal successors, (284), 89 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 17:06:42,177 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-13 17:06:42,177 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:42,177 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:42,178 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 17:06:42,181 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:42,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1193666932, now seen corresponding path program 1 times [2025-04-13 17:06:42,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:42,187 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898332686] [2025-04-13 17:06:42,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:06:42,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:42,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-13 17:06:42,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-13 17:06:42,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:06:42,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:42,562 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 17:06:42,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:42,563 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898332686] [2025-04-13 17:06:42,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898332686] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:06:42,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:06:42,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 17:06:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109935380] [2025-04-13 17:06:42,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:06:42,569 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:06:42,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:42,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:06:42,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:06:42,586 INFO L87 Difference]: Start difference. First operand has 90 states, 89 states have (on average 3.191011235955056) internal successors, (284), 89 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) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:42,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:42,755 INFO L93 Difference]: Finished difference Result 160 states and 472 transitions. [2025-04-13 17:06:42,755 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 17:06:42,756 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2025-04-13 17:06:42,757 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:42,763 INFO L225 Difference]: With dead ends: 160 [2025-04-13 17:06:42,764 INFO L226 Difference]: Without dead ends: 94 [2025-04-13 17:06:42,767 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 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 17:06:42,770 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:42,770 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:06:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-04-13 17:06:42,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2025-04-13 17:06:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.6881720430107525) internal successors, (250), 93 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 17:06:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 250 transitions. [2025-04-13 17:06:42,799 INFO L79 Accepts]: Start accepts. Automaton has 94 states and 250 transitions. Word has length 8 [2025-04-13 17:06:42,799 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:42,800 INFO L485 AbstractCegarLoop]: Abstraction has 94 states and 250 transitions. [2025-04-13 17:06:42,800 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:42,800 INFO L278 IsEmpty]: Start isEmpty. Operand 94 states and 250 transitions. [2025-04-13 17:06:42,802 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-13 17:06:42,802 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:42,802 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:42,803 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 17:06:42,803 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 17:06:42,803 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash -113514130, now seen corresponding path program 1 times [2025-04-13 17:06:42,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:42,804 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251694516] [2025-04-13 17:06:42,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:06:42,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:42,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-13 17:06:42,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-13 17:06:42,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:06:42,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:06:42,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:42,957 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251694516] [2025-04-13 17:06:42,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251694516] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:06:42,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:06:42,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 17:06:42,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008738150] [2025-04-13 17:06:42,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:06:42,958 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 17:06:42,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:42,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 17:06:42,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-13 17:06:42,961 INFO L87 Difference]: Start difference. First operand 94 states and 250 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:43,114 INFO L93 Difference]: Finished difference Result 156 states and 417 transitions. [2025-04-13 17:06:43,115 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 17:06:43,115 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2025-04-13 17:06:43,115 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:43,116 INFO L225 Difference]: With dead ends: 156 [2025-04-13 17:06:43,116 INFO L226 Difference]: Without dead ends: 115 [2025-04-13 17:06:43,116 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:06:43,117 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:43,117 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:06:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-04-13 17:06:43,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104. [2025-04-13 17:06:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.6407766990291264) internal successors, (272), 103 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 17:06:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 272 transitions. [2025-04-13 17:06:43,127 INFO L79 Accepts]: Start accepts. Automaton has 104 states and 272 transitions. Word has length 10 [2025-04-13 17:06:43,128 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:43,128 INFO L485 AbstractCegarLoop]: Abstraction has 104 states and 272 transitions. [2025-04-13 17:06:43,128 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:43,128 INFO L278 IsEmpty]: Start isEmpty. Operand 104 states and 272 transitions. [2025-04-13 17:06:43,129 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 17:06:43,129 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:43,129 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:43,129 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 17:06:43,129 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 17:06:43,130 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash -74058640, now seen corresponding path program 1 times [2025-04-13 17:06:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:43,130 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348597591] [2025-04-13 17:06:43,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:06:43,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:43,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 17:06:43,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 17:06:43,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:06:43,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:43,269 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 17:06:43,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:43,271 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348597591] [2025-04-13 17:06:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348597591] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:06:43,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:06:43,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:06:43,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507003955] [2025-04-13 17:06:43,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:06:43,271 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 17:06:43,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:43,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 17:06:43,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:06:43,272 INFO L87 Difference]: Start difference. First operand 104 states and 272 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:43,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:43,437 INFO L93 Difference]: Finished difference Result 181 states and 489 transitions. [2025-04-13 17:06:43,438 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:06:43,438 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2025-04-13 17:06:43,438 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:43,439 INFO L225 Difference]: With dead ends: 181 [2025-04-13 17:06:43,439 INFO L226 Difference]: Without dead ends: 123 [2025-04-13 17:06:43,440 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:06:43,440 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:43,440 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:06:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-04-13 17:06:43,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2025-04-13 17:06:43,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 2.63) internal successors, (263), 100 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:43,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 263 transitions. [2025-04-13 17:06:43,450 INFO L79 Accepts]: Start accepts. Automaton has 101 states and 263 transitions. Word has length 12 [2025-04-13 17:06:43,451 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:43,451 INFO L485 AbstractCegarLoop]: Abstraction has 101 states and 263 transitions. [2025-04-13 17:06:43,451 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:43,451 INFO L278 IsEmpty]: Start isEmpty. Operand 101 states and 263 transitions. [2025-04-13 17:06:43,451 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 17:06:43,451 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:43,452 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:43,452 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 17:06:43,452 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 17:06:43,452 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:43,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1181930978, now seen corresponding path program 2 times [2025-04-13 17:06:43,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:43,453 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334028636] [2025-04-13 17:06:43,453 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:06:43,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:43,464 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-04-13 17:06:43,470 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 17:06:43,471 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 17:06:43,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:43,610 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 17:06:43,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:43,611 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334028636] [2025-04-13 17:06:43,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334028636] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:06:43,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:06:43,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:06:43,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840515298] [2025-04-13 17:06:43,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:06:43,611 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 17:06:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:43,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 17:06:43,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:06:43,612 INFO L87 Difference]: Start difference. First operand 101 states and 263 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:43,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:43,778 INFO L93 Difference]: Finished difference Result 181 states and 477 transitions. [2025-04-13 17:06:43,779 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:06:43,779 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2025-04-13 17:06:43,779 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:43,780 INFO L225 Difference]: With dead ends: 181 [2025-04-13 17:06:43,780 INFO L226 Difference]: Without dead ends: 141 [2025-04-13 17:06:43,780 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:06:43,781 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:43,781 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:06:43,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-04-13 17:06:43,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2025-04-13 17:06:43,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 2.683333333333333) internal successors, (322), 120 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:43,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 322 transitions. [2025-04-13 17:06:43,792 INFO L79 Accepts]: Start accepts. Automaton has 121 states and 322 transitions. Word has length 12 [2025-04-13 17:06:43,792 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:43,792 INFO L485 AbstractCegarLoop]: Abstraction has 121 states and 322 transitions. [2025-04-13 17:06:43,792 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:43,793 INFO L278 IsEmpty]: Start isEmpty. Operand 121 states and 322 transitions. [2025-04-13 17:06:43,793 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:06:43,793 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:43,793 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:43,793 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 17:06:43,797 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 17:06:43,798 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:43,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1785516029, now seen corresponding path program 1 times [2025-04-13 17:06:43,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:43,798 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916800607] [2025-04-13 17:06:43,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:06:43,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:43,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:06:43,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:06:43,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:06:43,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:43,919 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 17:06:43,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:43,919 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916800607] [2025-04-13 17:06:43,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916800607] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:06:43,919 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524102781] [2025-04-13 17:06:43,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:06:43,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:43,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:06:43,922 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 17:06:43,924 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 17:06:43,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:06:43,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:06:43,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:06:43,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:43,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-04-13 17:06:43,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:06:44,067 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 17:06:44,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:06:44,166 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 17:06:44,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524102781] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:06:44,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:06:44,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-04-13 17:06:44,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067350377] [2025-04-13 17:06:44,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:06:44,167 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:06:44,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:44,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:06:44,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:06:44,167 INFO L87 Difference]: Start difference. First operand 121 states and 322 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:44,484 INFO L93 Difference]: Finished difference Result 283 states and 799 transitions. [2025-04-13 17:06:44,484 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 17:06:44,484 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 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 17:06:44,484 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:44,488 INFO L225 Difference]: With dead ends: 283 [2025-04-13 17:06:44,488 INFO L226 Difference]: Without dead ends: 165 [2025-04-13 17:06:44,489 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2025-04-13 17:06:44,489 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 194 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:44,489 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:06:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-04-13 17:06:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 143. [2025-04-13 17:06:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.676056338028169) internal successors, (380), 142 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 380 transitions. [2025-04-13 17:06:44,498 INFO L79 Accepts]: Start accepts. Automaton has 143 states and 380 transitions. Word has length 14 [2025-04-13 17:06:44,498 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:44,498 INFO L485 AbstractCegarLoop]: Abstraction has 143 states and 380 transitions. [2025-04-13 17:06:44,498 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:44,498 INFO L278 IsEmpty]: Start isEmpty. Operand 143 states and 380 transitions. [2025-04-13 17:06:44,499 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-04-13 17:06:44,499 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:44,499 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:44,506 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 17:06:44,704 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:44,704 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 17:06:44,704 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1086548674, now seen corresponding path program 1 times [2025-04-13 17:06:44,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:44,705 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648764863] [2025-04-13 17:06:44,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:06:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:44,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:06:44,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:06:44,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:06:44,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 17:06:44,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:44,828 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648764863] [2025-04-13 17:06:44,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648764863] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:06:44,828 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571338454] [2025-04-13 17:06:44,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:06:44,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:44,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:06:44,830 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 17:06:44,831 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 17:06:44,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 17:06:44,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 17:06:44,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:06:44,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:44,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 17:06:44,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:06:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 17:06:44,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:06:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 17:06:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571338454] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:06:45,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:06:45,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-04-13 17:06:45,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008790215] [2025-04-13 17:06:45,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:06:45,076 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:06:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:45,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:06:45,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:06:45,077 INFO L87 Difference]: Start difference. First operand 143 states and 380 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 17:06:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:45,698 INFO L93 Difference]: Finished difference Result 583 states and 1639 transitions. [2025-04-13 17:06:45,698 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 17:06:45,698 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 20 [2025-04-13 17:06:45,698 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:45,700 INFO L225 Difference]: With dead ends: 583 [2025-04-13 17:06:45,700 INFO L226 Difference]: Without dead ends: 365 [2025-04-13 17:06:45,703 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=652, Invalid=1700, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 17:06:45,704 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 266 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:45,704 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:06:45,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2025-04-13 17:06:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 215. [2025-04-13 17:06:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.6448598130841123) internal successors, (566), 214 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 566 transitions. [2025-04-13 17:06:45,720 INFO L79 Accepts]: Start accepts. Automaton has 215 states and 566 transitions. Word has length 20 [2025-04-13 17:06:45,720 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:45,723 INFO L485 AbstractCegarLoop]: Abstraction has 215 states and 566 transitions. [2025-04-13 17:06:45,723 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 17:06:45,723 INFO L278 IsEmpty]: Start isEmpty. Operand 215 states and 566 transitions. [2025-04-13 17:06:45,725 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-13 17:06:45,725 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:45,725 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:45,732 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 17:06:45,926 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 17:06:45,926 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 17:06:45,927 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:45,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1894636035, now seen corresponding path program 2 times [2025-04-13 17:06:45,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:45,927 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114686527] [2025-04-13 17:06:45,927 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:06:45,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:45,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 17:06:45,941 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 17:06:45,942 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:06:45,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:06:46,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:46,102 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114686527] [2025-04-13 17:06:46,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114686527] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:06:46,102 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67137978] [2025-04-13 17:06:46,103 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:06:46,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:46,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:06:46,105 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 17:06:46,107 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 17:06:46,140 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-04-13 17:06:46,154 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-04-13 17:06:46,154 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:06:46,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:46,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 17:06:46,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:06:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:06:46,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:06:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:06:46,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67137978] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:06:46,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:06:46,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2025-04-13 17:06:46,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577562529] [2025-04-13 17:06:46,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:06:46,384 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 17:06:46,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:46,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 17:06:46,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:06:46,384 INFO L87 Difference]: Start difference. First operand 215 states and 566 transitions. Second operand has 25 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 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 17:06:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:47,260 INFO L93 Difference]: Finished difference Result 739 states and 2071 transitions. [2025-04-13 17:06:47,260 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-04-13 17:06:47,261 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 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 26 [2025-04-13 17:06:47,261 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:47,264 INFO L225 Difference]: With dead ends: 739 [2025-04-13 17:06:47,264 INFO L226 Difference]: Without dead ends: 469 [2025-04-13 17:06:47,265 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1340, Invalid=3490, Unknown=0, NotChecked=0, Total=4830 [2025-04-13 17:06:47,266 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 543 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:47,266 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:06:47,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2025-04-13 17:06:47,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 287. [2025-04-13 17:06:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.6713286713286712) internal successors, (764), 286 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 764 transitions. [2025-04-13 17:06:47,279 INFO L79 Accepts]: Start accepts. Automaton has 287 states and 764 transitions. Word has length 26 [2025-04-13 17:06:47,279 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:47,279 INFO L485 AbstractCegarLoop]: Abstraction has 287 states and 764 transitions. [2025-04-13 17:06:47,279 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 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 17:06:47,279 INFO L278 IsEmpty]: Start isEmpty. Operand 287 states and 764 transitions. [2025-04-13 17:06:47,280 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-04-13 17:06:47,280 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:47,280 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:47,287 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 17:06:47,481 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:47,481 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 17:06:47,481 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:47,482 INFO L85 PathProgramCache]: Analyzing trace with hash -391232322, now seen corresponding path program 3 times [2025-04-13 17:06:47,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:47,482 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859040266] [2025-04-13 17:06:47,482 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:06:47,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:47,488 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 15 equivalence classes. [2025-04-13 17:06:47,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 17:06:47,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-04-13 17:06:47,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 1 proven. 189 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 17:06:47,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:47,826 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859040266] [2025-04-13 17:06:47,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859040266] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:06:47,826 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592018274] [2025-04-13 17:06:47,826 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:06:47,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:47,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:06:47,829 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 17:06:47,830 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 17:06:47,870 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 15 equivalence classes. [2025-04-13 17:06:47,890 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 44 of 44 statements. [2025-04-13 17:06:47,890 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-04-13 17:06:47,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:47,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-04-13 17:06:47,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:06:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 1 proven. 189 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 17:06:47,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:06:48,307 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 17:06:48,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592018274] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:06:48,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:06:48,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 40 [2025-04-13 17:06:48,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290764722] [2025-04-13 17:06:48,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:06:48,308 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-04-13 17:06:48,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:48,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-04-13 17:06:48,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1321, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 17:06:48,309 INFO L87 Difference]: Start difference. First operand 287 states and 764 transitions. Second operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:50,377 INFO L93 Difference]: Finished difference Result 1509 states and 4237 transitions. [2025-04-13 17:06:50,377 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2025-04-13 17:06:50,378 INFO L79 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 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 44 [2025-04-13 17:06:50,378 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:50,382 INFO L225 Difference]: With dead ends: 1509 [2025-04-13 17:06:50,382 INFO L226 Difference]: Without dead ends: 1005 [2025-04-13 17:06:50,386 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6190 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4605, Invalid=12951, Unknown=0, NotChecked=0, Total=17556 [2025-04-13 17:06:50,386 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1173 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:50,386 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:06:50,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2025-04-13 17:06:50,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 495. [2025-04-13 17:06:50,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 2.651821862348178) internal successors, (1310), 494 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 1310 transitions. [2025-04-13 17:06:50,403 INFO L79 Accepts]: Start accepts. Automaton has 495 states and 1310 transitions. Word has length 44 [2025-04-13 17:06:50,405 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:50,405 INFO L485 AbstractCegarLoop]: Abstraction has 495 states and 1310 transitions. [2025-04-13 17:06:50,405 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:50,405 INFO L278 IsEmpty]: Start isEmpty. Operand 495 states and 1310 transitions. [2025-04-13 17:06:50,407 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-04-13 17:06:50,407 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:50,407 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:50,414 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 17:06:50,611 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:50,611 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 17:06:50,611 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash 930407388, now seen corresponding path program 4 times [2025-04-13 17:06:50,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:50,612 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847372101] [2025-04-13 17:06:50,612 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:06:50,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:50,617 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 72 statements into 2 equivalence classes. [2025-04-13 17:06:50,626 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-04-13 17:06:50,626 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:06:50,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:06:51,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:51,328 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847372101] [2025-04-13 17:06:51,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847372101] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:06:51,328 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452108924] [2025-04-13 17:06:51,328 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:06:51,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:51,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:06:51,330 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 17:06:51,331 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 17:06:51,369 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 72 statements into 2 equivalence classes. [2025-04-13 17:06:51,388 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-04-13 17:06:51,388 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:06:51,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:51,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-04-13 17:06:51,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:06:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:06:51,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:06:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:06:52,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452108924] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:06:52,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:06:52,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 68 [2025-04-13 17:06:52,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910033490] [2025-04-13 17:06:52,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:06:52,161 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-04-13 17:06:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:52,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-04-13 17:06:52,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1098, Invalid=3732, Unknown=0, NotChecked=0, Total=4830 [2025-04-13 17:06:52,163 INFO L87 Difference]: Start difference. First operand 495 states and 1310 transitions. Second operand has 70 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 69 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:54,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:54,346 INFO L93 Difference]: Finished difference Result 1645 states and 4465 transitions. [2025-04-13 17:06:54,346 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2025-04-13 17:06:54,346 INFO L79 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 69 states have internal predecessors, (146), 0 states have call successors, (0), 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 72 [2025-04-13 17:06:54,346 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:54,352 INFO L225 Difference]: With dead ends: 1645 [2025-04-13 17:06:54,352 INFO L226 Difference]: Without dead ends: 1393 [2025-04-13 17:06:54,356 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7691 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=6419, Invalid=17761, Unknown=0, NotChecked=0, Total=24180 [2025-04-13 17:06:54,357 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1431 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:54,357 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 17:06:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2025-04-13 17:06:54,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 539. [2025-04-13 17:06:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 2.6691449814126393) internal successors, (1436), 538 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 1436 transitions. [2025-04-13 17:06:54,379 INFO L79 Accepts]: Start accepts. Automaton has 539 states and 1436 transitions. Word has length 72 [2025-04-13 17:06:54,380 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:54,380 INFO L485 AbstractCegarLoop]: Abstraction has 539 states and 1436 transitions. [2025-04-13 17:06:54,380 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.1159420289855073) internal successors, (146), 69 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:54,380 INFO L278 IsEmpty]: Start isEmpty. Operand 539 states and 1436 transitions. [2025-04-13 17:06:54,382 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-04-13 17:06:54,382 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:54,382 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:54,389 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 17:06:54,582 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:54,583 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 17:06:54,583 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:54,583 INFO L85 PathProgramCache]: Analyzing trace with hash -307235491, now seen corresponding path program 5 times [2025-04-13 17:06:54,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:54,583 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407996849] [2025-04-13 17:06:54,583 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:06:54,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:54,589 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 86 statements into 37 equivalence classes. [2025-04-13 17:06:54,612 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) and asserted 86 of 86 statements. [2025-04-13 17:06:54,613 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2025-04-13 17:06:54,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:06:55,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:55,449 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407996849] [2025-04-13 17:06:55,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407996849] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:06:55,449 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918576124] [2025-04-13 17:06:55,449 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:06:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:06:55,453 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 17:06:55,454 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 17:06:55,490 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 86 statements into 37 equivalence classes. [2025-04-13 17:06:55,525 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) and asserted 86 of 86 statements. [2025-04-13 17:06:55,525 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2025-04-13 17:06:55,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:55,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-04-13 17:06:55,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:06:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 1 proven. 1026 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:06:55,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:06:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:06:56,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918576124] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:06:56,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:06:56,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 48 [2025-04-13 17:06:56,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360561044] [2025-04-13 17:06:56,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:06:56,188 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-04-13 17:06:56,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:56,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-04-13 17:06:56,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=1903, Unknown=0, NotChecked=0, Total=2450 [2025-04-13 17:06:56,189 INFO L87 Difference]: Start difference. First operand 539 states and 1436 transitions. Second operand has 50 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:58,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:58,364 INFO L93 Difference]: Finished difference Result 1219 states and 3311 transitions. [2025-04-13 17:06:58,364 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2025-04-13 17:06:58,364 INFO L79 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 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 86 [2025-04-13 17:06:58,364 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:58,369 INFO L225 Difference]: With dead ends: 1219 [2025-04-13 17:06:58,369 INFO L226 Difference]: Without dead ends: 1061 [2025-04-13 17:06:58,371 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 129 SyntacticMatches, 35 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7148 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5723, Invalid=14583, Unknown=0, NotChecked=0, Total=20306 [2025-04-13 17:06:58,372 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 1184 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:58,372 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 17:06:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2025-04-13 17:06:58,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 599. [2025-04-13 17:06:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 2.6588628762541804) internal successors, (1590), 598 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 1590 transitions. [2025-04-13 17:06:58,393 INFO L79 Accepts]: Start accepts. Automaton has 599 states and 1590 transitions. Word has length 86 [2025-04-13 17:06:58,394 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:58,394 INFO L485 AbstractCegarLoop]: Abstraction has 599 states and 1590 transitions. [2025-04-13 17:06:58,394 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:58,394 INFO L278 IsEmpty]: Start isEmpty. Operand 599 states and 1590 transitions. [2025-04-13 17:06:58,397 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-04-13 17:06:58,397 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:06:58,397 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:06:58,404 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 17:06:58,598 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:58,598 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 17:06:58,599 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:06:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash 780223997, now seen corresponding path program 6 times [2025-04-13 17:06:58,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:06:58,599 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312145732] [2025-04-13 17:06:58,599 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:06:58,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:06:58,604 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 90 statements into 39 equivalence classes. [2025-04-13 17:06:58,636 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) and asserted 90 of 90 statements. [2025-04-13 17:06:58,636 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2025-04-13 17:06:58,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 1102 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-04-13 17:06:58,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:06:58,905 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312145732] [2025-04-13 17:06:58,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312145732] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:06:58,905 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546240696] [2025-04-13 17:06:58,905 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:06:58,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:58,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:06:58,907 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 17:06:58,908 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 17:06:58,939 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 90 statements into 39 equivalence classes. [2025-04-13 17:06:58,969 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) and asserted 90 of 90 statements. [2025-04-13 17:06:58,969 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2025-04-13 17:06:58,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:06:58,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-04-13 17:06:58,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:06:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 1103 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-04-13 17:06:59,036 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-13 17:06:59,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546240696] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:06:59,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-13 17:06:59,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [22] total 23 [2025-04-13 17:06:59,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434062433] [2025-04-13 17:06:59,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:06:59,036 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 17:06:59,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:06:59,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 17:06:59,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:06:59,037 INFO L87 Difference]: Start difference. First operand 599 states and 1590 transitions. Second operand has 22 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:06:59,190 INFO L93 Difference]: Finished difference Result 6058 states and 16095 transitions. [2025-04-13 17:06:59,190 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 17:06:59,190 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2025-04-13 17:06:59,190 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:06:59,192 INFO L225 Difference]: With dead ends: 6058 [2025-04-13 17:06:59,192 INFO L226 Difference]: Without dead ends: 0 [2025-04-13 17:06:59,198 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:06:59,199 INFO L437 NwaCegarLoop]: 62 mSDtfsCounter, 107 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:06:59,199 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 177 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:06:59,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-13 17:06:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-13 17:06:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-13 17:06:59,202 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2025-04-13 17:06:59,202 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:06:59,202 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-13 17:06:59,202 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:06:59,202 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-13 17:06:59,202 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-13 17:06:59,204 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 17:06:59,204 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 17:06:59,204 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 17:06:59,211 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 17:06:59,405 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:06:59,407 INFO L422 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1] [2025-04-13 17:06:59,409 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 17:06:59,409 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 17:06:59,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 05:06:59 BasicIcfg [2025-04-13 17:06:59,411 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 17:06:59,412 INFO L158 Benchmark]: Toolchain (without parser) took 18111.46ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 107.7MB in the beginning and 90.1MB in the end (delta: 17.6MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2025-04-13 17:06:59,412 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:06:59,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.19ms. Allocated memory is still 155.2MB. Free memory was 107.7MB in the beginning and 85.9MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 17:06:59,413 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.11ms. Allocated memory is still 155.2MB. Free memory was 85.9MB in the beginning and 83.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 17:06:59,413 INFO L158 Benchmark]: Boogie Preprocessor took 29.73ms. Allocated memory is still 155.2MB. Free memory was 83.3MB in the beginning and 81.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:06:59,413 INFO L158 Benchmark]: RCFGBuilder took 317.80ms. Allocated memory is still 155.2MB. Free memory was 81.7MB in the beginning and 61.6MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 17:06:59,413 INFO L158 Benchmark]: TraceAbstraction took 17357.12ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 60.8MB in the beginning and 90.1MB in the end (delta: -29.3MB). Peak memory consumption was 25.1MB. Max. memory is 8.0GB. [2025-04-13 17:06:59,415 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 159.4MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 373.19ms. Allocated memory is still 155.2MB. Free memory was 107.7MB in the beginning and 85.9MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.11ms. Allocated memory is still 155.2MB. Free memory was 85.9MB in the beginning and 83.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.73ms. Allocated memory is still 155.2MB. Free memory was 83.3MB in the beginning and 81.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 317.80ms. Allocated memory is still 155.2MB. Free memory was 81.7MB in the beginning and 61.6MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 17357.12ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 60.8MB in the beginning and 90.1MB in the end (delta: -29.3MB). Peak memory consumption was 25.1MB. 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 - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 33 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 17.3s, OverallIterations: 11, TraceHistogramMax: 21, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5100 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5100 mSDsluCounter, 185 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 404 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4894 IncrementalHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 404 mSolverCounterUnsat, 62 mSDtfsCounter, 4894 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1142 GetRequests, 483 SyntacticMatches, 35 SemanticMatches, 624 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23329 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=10, InterpolantAutomatonStates: 444, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 2233 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 746 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 198 NumberOfCheckSat, 984 ConstructedInterpolants, 0 QuantifiedInterpolants, 3308 SizeOfPredicates, 110 NumberOfNonLiveVariables, 1251 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 2262/8025 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 17:06:59,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...