/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 17:59:07,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 17:59:07,623 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 17:59:07,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 17:59:07,628 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 17:59:07,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 17:59:07,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 17:59:07,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 17:59:07,653 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 17:59:07,654 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 17:59:07,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 17:59:07,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 17:59:07,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 17:59:07,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 17:59:07,655 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 17:59:07,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 17:59:07,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 17:59:07,655 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 17:59:07,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 17:59:07,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 17:59:07,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 17:59:07,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 17:59:07,656 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:59:07,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:59:07,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:59:07,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:59:07,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:59:07,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 17:59:07,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 17:59:07,657 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 17:59:07,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 17:59:07,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 17:59:07,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 17:59:07,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 17:59:07,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 17:59:07,657 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 17:59:07,657 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 17:59:07,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 17:59:07,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 17:59:07,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 17:59:07,875 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 17:59:07,876 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 17:59:07,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2025-04-13 17:59:09,093 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f88415b/e3a2c81746eb41da8b14b82bcf7f5abe/FLAG15195c55e [2025-04-13 17:59:09,273 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 17:59:09,273 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2025-04-13 17:59:09,284 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f88415b/e3a2c81746eb41da8b14b82bcf7f5abe/FLAG15195c55e [2025-04-13 17:59:10,094 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f88415b/e3a2c81746eb41da8b14b82bcf7f5abe [2025-04-13 17:59:10,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 17:59:10,097 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 17:59:10,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 17:59:10,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 17:59:10,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 17:59:10,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74833c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10, skipping insertion in model container [2025-04-13 17:59:10,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,116 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 17:59:10,249 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c[2356,2369] [2025-04-13 17:59:10,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:59:10,260 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 17:59:10,277 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c[2356,2369] [2025-04-13 17:59:10,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:59:10,291 INFO L204 MainTranslator]: Completed translation [2025-04-13 17:59:10,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10 WrapperNode [2025-04-13 17:59:10,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 17:59:10,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 17:59:10,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 17:59:10,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 17:59:10,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,308 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,327 INFO L138 Inliner]: procedures = 22, calls = 18, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 154 [2025-04-13 17:59:10,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 17:59:10,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 17:59:10,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 17:59:10,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 17:59:10,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,357 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 17:59:10,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,360 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,360 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,362 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 17:59:10,366 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 17:59:10,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 17:59:10,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 17:59:10,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (1/1) ... [2025-04-13 17:59:10,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:59:10,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:10,393 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 17:59:10,394 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 17:59:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 17:59:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 17:59:10,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 17:59:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 17:59:10,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 17:59:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 17:59:10,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 17:59:10,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 17:59:10,414 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 17:59:10,488 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 17:59:10,490 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 17:59:10,751 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 17:59:10,752 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 17:59:10,752 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 17:59:11,017 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 17:59:11,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:59:11 BoogieIcfgContainer [2025-04-13 17:59:11,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 17:59:11,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 17:59:11,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 17:59:11,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 17:59:11,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 05:59:10" (1/3) ... [2025-04-13 17:59:11,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d73b5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:59:11, skipping insertion in model container [2025-04-13 17:59:11,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:59:10" (2/3) ... [2025-04-13 17:59:11,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d73b5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:59:11, skipping insertion in model container [2025-04-13 17:59:11,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:59:11" (3/3) ... [2025-04-13 17:59:11,025 INFO L128 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2025-04-13 17:59:11,035 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 17:59:11,036 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibonacci.wvr.c that has 3 procedures, 16 locations, 15 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-13 17:59:11,036 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 17:59:11,070 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 17:59:11,091 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions, 48 flow [2025-04-13 17:59:11,101 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 31 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:11,119 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:59:11,126 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;@3260d497, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:59:11,126 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 17:59:11,128 INFO L278 IsEmpty]: Start isEmpty. Operand has 31 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:11,131 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 17:59:11,131 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:11,131 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:11,131 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 17:59:11,134 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash -886300646, now seen corresponding path program 1 times [2025-04-13 17:59:11,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:11,139 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748486719] [2025-04-13 17:59:11,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:59:11,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:11,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 17:59:11,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 17:59:11,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:11,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:11,567 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 17:59:11,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:11,567 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748486719] [2025-04-13 17:59:11,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748486719] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:59:11,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:59:11,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 17:59:11,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316101859] [2025-04-13 17:59:11,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:59:11,574 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:59:11,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:11,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:59:11,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:11,589 INFO L87 Difference]: Start difference. First operand has 31 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 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 3.0) internal successors, (12), 4 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 17:59:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:11,711 INFO L93 Difference]: Finished difference Result 61 states and 127 transitions. [2025-04-13 17:59:11,712 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:59:11,712 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 17:59:11,713 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:11,718 INFO L225 Difference]: With dead ends: 61 [2025-04-13 17:59:11,718 INFO L226 Difference]: Without dead ends: 56 [2025-04-13 17:59:11,721 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:59:11,723 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:11,723 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-04-13 17:59:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2025-04-13 17:59:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 2.347826086956522) internal successors, (108), 46 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 108 transitions. [2025-04-13 17:59:11,750 INFO L79 Accepts]: Start accepts. Automaton has 47 states and 108 transitions. Word has length 12 [2025-04-13 17:59:11,750 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:11,750 INFO L485 AbstractCegarLoop]: Abstraction has 47 states and 108 transitions. [2025-04-13 17:59:11,750 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 17:59:11,751 INFO L278 IsEmpty]: Start isEmpty. Operand 47 states and 108 transitions. [2025-04-13 17:59:11,751 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 17:59:11,751 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:11,751 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:11,751 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 17:59:11,753 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 17:59:11,753 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2145322250, now seen corresponding path program 2 times [2025-04-13 17:59:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:11,753 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604735868] [2025-04-13 17:59:11,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:11,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:11,763 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 1 equivalence classes. [2025-04-13 17:59:11,770 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 17:59:11,770 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 17:59:11,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:11,921 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 17:59:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:11,921 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604735868] [2025-04-13 17:59:11,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604735868] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:59:11,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:59:11,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 17:59:11,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42338147] [2025-04-13 17:59:11,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:59:11,922 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:59:11,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:11,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:59:11,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:11,923 INFO L87 Difference]: Start difference. First operand 47 states and 108 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 17:59:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:12,010 INFO L93 Difference]: Finished difference Result 56 states and 120 transitions. [2025-04-13 17:59:12,010 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:59:12,010 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 17:59:12,010 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:12,011 INFO L225 Difference]: With dead ends: 56 [2025-04-13 17:59:12,011 INFO L226 Difference]: Without dead ends: 51 [2025-04-13 17:59:12,011 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 17:59:12,012 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:12,012 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:12,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-04-13 17:59:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-04-13 17:59:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 2.28) internal successors, (114), 50 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 114 transitions. [2025-04-13 17:59:12,019 INFO L79 Accepts]: Start accepts. Automaton has 51 states and 114 transitions. Word has length 12 [2025-04-13 17:59:12,021 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:12,021 INFO L485 AbstractCegarLoop]: Abstraction has 51 states and 114 transitions. [2025-04-13 17:59:12,021 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 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 17:59:12,021 INFO L278 IsEmpty]: Start isEmpty. Operand 51 states and 114 transitions. [2025-04-13 17:59:12,021 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:12,021 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:12,021 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:12,021 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 17:59:12,021 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 17:59:12,022 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:12,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1667234590, now seen corresponding path program 1 times [2025-04-13 17:59:12,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:12,022 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327856234] [2025-04-13 17:59:12,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:59:12,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:12,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 17:59:12,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:12,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:12,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:12,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:12,093 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327856234] [2025-04-13 17:59:12,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327856234] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:59:12,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:59:12,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:59:12,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248877387] [2025-04-13 17:59:12,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:59:12,093 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:59:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:12,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:59:12,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:12,094 INFO L87 Difference]: Start difference. First operand 51 states and 114 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:12,155 INFO L93 Difference]: Finished difference Result 74 states and 157 transitions. [2025-04-13 17:59:12,155 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:59:12,155 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:12,155 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:12,156 INFO L225 Difference]: With dead ends: 74 [2025-04-13 17:59:12,156 INFO L226 Difference]: Without dead ends: 58 [2025-04-13 17:59:12,156 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:12,157 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:12,158 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-04-13 17:59:12,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2025-04-13 17:59:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 45 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:12,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 103 transitions. [2025-04-13 17:59:12,168 INFO L79 Accepts]: Start accepts. Automaton has 46 states and 103 transitions. Word has length 13 [2025-04-13 17:59:12,168 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:12,169 INFO L485 AbstractCegarLoop]: Abstraction has 46 states and 103 transitions. [2025-04-13 17:59:12,169 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:12,169 INFO L278 IsEmpty]: Start isEmpty. Operand 46 states and 103 transitions. [2025-04-13 17:59:12,169 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:12,169 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:12,169 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:12,169 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 17:59:12,169 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 17:59:12,170 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:12,170 INFO L85 PathProgramCache]: Analyzing trace with hash -636126205, now seen corresponding path program 1 times [2025-04-13 17:59:12,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:12,170 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691291953] [2025-04-13 17:59:12,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:59:12,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:12,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 17:59:12,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:12,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:12,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:12,227 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 17:59:12,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:12,227 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691291953] [2025-04-13 17:59:12,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691291953] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:12,227 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905697951] [2025-04-13 17:59:12,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:59:12,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:12,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:12,230 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 17:59:12,232 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 17:59:12,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 17:59:12,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:12,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:12,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:12,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 17:59:12,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:12,329 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 17:59:12,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:12,354 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 17:59:12,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905697951] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:12,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:12,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-04-13 17:59:12,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876209866] [2025-04-13 17:59:12,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:12,356 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 17:59:12,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:12,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 17:59:12,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-04-13 17:59:12,357 INFO L87 Difference]: Start difference. First operand 46 states and 103 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:12,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:12,501 INFO L93 Difference]: Finished difference Result 70 states and 155 transitions. [2025-04-13 17:59:12,501 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:12,502 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:12,502 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:12,502 INFO L225 Difference]: With dead ends: 70 [2025-04-13 17:59:12,502 INFO L226 Difference]: Without dead ends: 63 [2025-04-13 17:59:12,503 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:12,503 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:12,503 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:12,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-04-13 17:59:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 48. [2025-04-13 17:59:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.3404255319148937) internal successors, (110), 47 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 110 transitions. [2025-04-13 17:59:12,511 INFO L79 Accepts]: Start accepts. Automaton has 48 states and 110 transitions. Word has length 13 [2025-04-13 17:59:12,511 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:12,511 INFO L485 AbstractCegarLoop]: Abstraction has 48 states and 110 transitions. [2025-04-13 17:59:12,511 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:12,511 INFO L278 IsEmpty]: Start isEmpty. Operand 48 states and 110 transitions. [2025-04-13 17:59:12,512 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:12,512 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:12,512 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:12,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-13 17:59:12,712 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:12,713 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 17:59:12,713 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash -323854944, now seen corresponding path program 2 times [2025-04-13 17:59:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:12,713 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112702651] [2025-04-13 17:59:12,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:12,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:12,718 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:12,723 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:12,724 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:12,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:12,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:12,776 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112702651] [2025-04-13 17:59:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112702651] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:59:12,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:59:12,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:59:12,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566740169] [2025-04-13 17:59:12,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:59:12,776 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:59:12,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:12,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:59:12,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:12,776 INFO L87 Difference]: Start difference. First operand 48 states and 110 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:12,825 INFO L93 Difference]: Finished difference Result 65 states and 150 transitions. [2025-04-13 17:59:12,825 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:59:12,825 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:12,825 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:12,826 INFO L225 Difference]: With dead ends: 65 [2025-04-13 17:59:12,826 INFO L226 Difference]: Without dead ends: 54 [2025-04-13 17:59:12,826 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:12,826 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:12,827 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:59:12,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-04-13 17:59:12,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2025-04-13 17:59:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 117 transitions. [2025-04-13 17:59:12,831 INFO L79 Accepts]: Start accepts. Automaton has 50 states and 117 transitions. Word has length 13 [2025-04-13 17:59:12,831 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:12,831 INFO L485 AbstractCegarLoop]: Abstraction has 50 states and 117 transitions. [2025-04-13 17:59:12,831 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:12,831 INFO L278 IsEmpty]: Start isEmpty. Operand 50 states and 117 transitions. [2025-04-13 17:59:12,831 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:12,831 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:12,831 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:12,831 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 17:59:12,831 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 17:59:12,832 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:12,832 INFO L85 PathProgramCache]: Analyzing trace with hash 449132133, now seen corresponding path program 2 times [2025-04-13 17:59:12,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:12,832 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289399521] [2025-04-13 17:59:12,832 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:12,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:12,835 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:12,840 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:12,840 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:12,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:12,874 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 17:59:12,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:12,874 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289399521] [2025-04-13 17:59:12,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289399521] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:12,874 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406014923] [2025-04-13 17:59:12,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:12,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:12,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:12,876 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 17:59:12,878 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 17:59:12,912 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:12,925 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:12,925 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:12,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:12,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 17:59:12,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:12,954 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 17:59:12,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:12,979 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 17:59:12,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406014923] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:12,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:12,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-04-13 17:59:12,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221603798] [2025-04-13 17:59:12,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:12,980 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 17:59:12,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:12,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 17:59:12,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:12,981 INFO L87 Difference]: Start difference. First operand 50 states and 117 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:13,093 INFO L93 Difference]: Finished difference Result 71 states and 169 transitions. [2025-04-13 17:59:13,094 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:59:13,094 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:13,094 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:13,094 INFO L225 Difference]: With dead ends: 71 [2025-04-13 17:59:13,095 INFO L226 Difference]: Without dead ends: 64 [2025-04-13 17:59:13,095 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:59:13,095 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:13,095 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-04-13 17:59:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2025-04-13 17:59:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.3877551020408165) internal successors, (117), 49 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 117 transitions. [2025-04-13 17:59:13,100 INFO L79 Accepts]: Start accepts. Automaton has 50 states and 117 transitions. Word has length 13 [2025-04-13 17:59:13,100 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:13,100 INFO L485 AbstractCegarLoop]: Abstraction has 50 states and 117 transitions. [2025-04-13 17:59:13,101 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,101 INFO L278 IsEmpty]: Start isEmpty. Operand 50 states and 117 transitions. [2025-04-13 17:59:13,101 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:13,101 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:13,101 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:13,109 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 17:59:13,301 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 17:59:13,302 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 17:59:13,302 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:13,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2044969213, now seen corresponding path program 3 times [2025-04-13 17:59:13,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:13,302 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385070054] [2025-04-13 17:59:13,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:13,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:13,308 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:13,312 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:13,313 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:13,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:13,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:13,360 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385070054] [2025-04-13 17:59:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385070054] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:59:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:59:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:59:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872053541] [2025-04-13 17:59:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:59:13,360 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:59:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:13,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:59:13,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:13,361 INFO L87 Difference]: Start difference. First operand 50 states and 117 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:13,415 INFO L93 Difference]: Finished difference Result 63 states and 143 transitions. [2025-04-13 17:59:13,415 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:59:13,415 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:13,416 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:13,416 INFO L225 Difference]: With dead ends: 63 [2025-04-13 17:59:13,416 INFO L226 Difference]: Without dead ends: 54 [2025-04-13 17:59:13,416 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:13,417 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:13,417 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:59:13,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-04-13 17:59:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2025-04-13 17:59:13,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 115 transitions. [2025-04-13 17:59:13,421 INFO L79 Accepts]: Start accepts. Automaton has 50 states and 115 transitions. Word has length 13 [2025-04-13 17:59:13,421 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:13,421 INFO L485 AbstractCegarLoop]: Abstraction has 50 states and 115 transitions. [2025-04-13 17:59:13,421 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,421 INFO L278 IsEmpty]: Start isEmpty. Operand 50 states and 115 transitions. [2025-04-13 17:59:13,421 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:13,421 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:13,421 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:13,421 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 17:59:13,421 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 17:59:13,422 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:13,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1183324120, now seen corresponding path program 3 times [2025-04-13 17:59:13,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:13,422 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817024563] [2025-04-13 17:59:13,422 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:13,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:13,425 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:13,430 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:13,430 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:13,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:13,476 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 17:59:13,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:13,476 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817024563] [2025-04-13 17:59:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817024563] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:13,476 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073076570] [2025-04-13 17:59:13,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:13,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:13,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:13,479 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 17:59:13,480 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 17:59:13,515 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:13,529 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:13,529 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:13,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:13,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 17:59:13,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:13,553 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 17:59:13,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:13,571 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 17:59:13,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073076570] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:13,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:13,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-04-13 17:59:13,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181627996] [2025-04-13 17:59:13,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:13,571 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 17:59:13,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:13,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 17:59:13,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:13,572 INFO L87 Difference]: Start difference. First operand 50 states and 115 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:13,634 INFO L93 Difference]: Finished difference Result 66 states and 155 transitions. [2025-04-13 17:59:13,634 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 17:59:13,634 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:13,634 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:13,635 INFO L225 Difference]: With dead ends: 66 [2025-04-13 17:59:13,635 INFO L226 Difference]: Without dead ends: 58 [2025-04-13 17:59:13,635 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-04-13 17:59:13,635 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:13,635 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-04-13 17:59:13,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2025-04-13 17:59:13,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.392156862745098) internal successors, (122), 51 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 122 transitions. [2025-04-13 17:59:13,640 INFO L79 Accepts]: Start accepts. Automaton has 52 states and 122 transitions. Word has length 13 [2025-04-13 17:59:13,640 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:13,640 INFO L485 AbstractCegarLoop]: Abstraction has 52 states and 122 transitions. [2025-04-13 17:59:13,640 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,640 INFO L278 IsEmpty]: Start isEmpty. Operand 52 states and 122 transitions. [2025-04-13 17:59:13,640 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:13,640 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:13,640 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:13,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-13 17:59:13,845 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:13,845 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 17:59:13,845 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:13,846 INFO L85 PathProgramCache]: Analyzing trace with hash -873553276, now seen corresponding path program 4 times [2025-04-13 17:59:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:13,846 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512116214] [2025-04-13 17:59:13,846 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:13,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:13,849 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:13,853 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:13,853 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:13,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:13,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:13,882 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512116214] [2025-04-13 17:59:13,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512116214] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:59:13,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:59:13,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:59:13,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702237996] [2025-04-13 17:59:13,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:59:13,882 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:59:13,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:13,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:59:13,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:13,883 INFO L87 Difference]: Start difference. First operand 52 states and 122 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:13,939 INFO L93 Difference]: Finished difference Result 68 states and 156 transitions. [2025-04-13 17:59:13,939 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:59:13,939 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:13,939 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:13,940 INFO L225 Difference]: With dead ends: 68 [2025-04-13 17:59:13,940 INFO L226 Difference]: Without dead ends: 57 [2025-04-13 17:59:13,940 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:59:13,940 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:13,940 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:59:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-04-13 17:59:13,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-04-13 17:59:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.392857142857143) internal successors, (134), 56 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 134 transitions. [2025-04-13 17:59:13,945 INFO L79 Accepts]: Start accepts. Automaton has 57 states and 134 transitions. Word has length 13 [2025-04-13 17:59:13,945 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:13,945 INFO L485 AbstractCegarLoop]: Abstraction has 57 states and 134 transitions. [2025-04-13 17:59:13,945 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:13,945 INFO L278 IsEmpty]: Start isEmpty. Operand 57 states and 134 transitions. [2025-04-13 17:59:13,945 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:13,945 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:13,945 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:13,946 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 17:59:13,946 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 17:59:13,946 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:13,946 INFO L85 PathProgramCache]: Analyzing trace with hash -100566199, now seen corresponding path program 4 times [2025-04-13 17:59:13,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:13,946 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363845519] [2025-04-13 17:59:13,946 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:13,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:13,951 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:13,957 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:13,957 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:13,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:13,990 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 17:59:13,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:13,990 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363845519] [2025-04-13 17:59:13,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363845519] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:13,990 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72382820] [2025-04-13 17:59:13,990 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:13,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:13,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:13,993 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 17:59:13,997 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 17:59:14,032 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:14,047 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:14,048 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:14,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:14,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 17:59:14,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:14,072 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 17:59:14,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:14,085 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 17:59:14,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72382820] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:14,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:14,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-04-13 17:59:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881753081] [2025-04-13 17:59:14,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:14,085 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-13 17:59:14,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:14,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-13 17:59:14,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:59:14,086 INFO L87 Difference]: Start difference. First operand 57 states and 134 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:14,173 INFO L93 Difference]: Finished difference Result 69 states and 160 transitions. [2025-04-13 17:59:14,173 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 17:59:14,173 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:14,173 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:14,174 INFO L225 Difference]: With dead ends: 69 [2025-04-13 17:59:14,174 INFO L226 Difference]: Without dead ends: 62 [2025-04-13 17:59:14,174 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-04-13 17:59:14,174 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:14,175 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-04-13 17:59:14,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2025-04-13 17:59:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.392857142857143) internal successors, (134), 56 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 134 transitions. [2025-04-13 17:59:14,179 INFO L79 Accepts]: Start accepts. Automaton has 57 states and 134 transitions. Word has length 13 [2025-04-13 17:59:14,179 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:14,179 INFO L485 AbstractCegarLoop]: Abstraction has 57 states and 134 transitions. [2025-04-13 17:59:14,179 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,179 INFO L278 IsEmpty]: Start isEmpty. Operand 57 states and 134 transitions. [2025-04-13 17:59:14,179 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:14,179 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:14,179 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:14,185 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 17:59:14,380 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:14,380 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 17:59:14,381 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:14,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1700299751, now seen corresponding path program 5 times [2025-04-13 17:59:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:14,381 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918313484] [2025-04-13 17:59:14,381 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:14,387 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:14,394 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:14,395 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:14,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:14,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:14,427 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918313484] [2025-04-13 17:59:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918313484] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:59:14,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:59:14,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:59:14,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850584908] [2025-04-13 17:59:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:59:14,428 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:59:14,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:14,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:59:14,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:14,428 INFO L87 Difference]: Start difference. First operand 57 states and 134 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:14,476 INFO L93 Difference]: Finished difference Result 68 states and 153 transitions. [2025-04-13 17:59:14,476 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:59:14,476 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:14,476 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:14,477 INFO L225 Difference]: With dead ends: 68 [2025-04-13 17:59:14,477 INFO L226 Difference]: Without dead ends: 59 [2025-04-13 17:59:14,477 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:14,477 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:14,478 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:59:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-04-13 17:59:14,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2025-04-13 17:59:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.357142857142857) internal successors, (132), 56 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 132 transitions. [2025-04-13 17:59:14,481 INFO L79 Accepts]: Start accepts. Automaton has 57 states and 132 transitions. Word has length 13 [2025-04-13 17:59:14,482 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:14,482 INFO L485 AbstractCegarLoop]: Abstraction has 57 states and 132 transitions. [2025-04-13 17:59:14,482 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,482 INFO L278 IsEmpty]: Start isEmpty. Operand 57 states and 132 transitions. [2025-04-13 17:59:14,482 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:14,482 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:14,482 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:14,482 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-04-13 17:59:14,482 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:14,482 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:14,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1733022452, now seen corresponding path program 5 times [2025-04-13 17:59:14,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:14,483 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771148401] [2025-04-13 17:59:14,483 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:14,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:14,486 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:14,488 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:14,488 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:14,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:14,516 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 17:59:14,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:14,516 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771148401] [2025-04-13 17:59:14,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771148401] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:14,516 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166412004] [2025-04-13 17:59:14,516 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:14,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:14,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:14,518 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 17:59:14,520 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 17:59:14,550 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:14,560 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:14,560 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:14,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:14,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 17:59:14,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:14,577 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 17:59:14,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:14,592 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 17:59:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166412004] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:14,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-04-13 17:59:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559485337] [2025-04-13 17:59:14,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:14,593 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 17:59:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:14,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 17:59:14,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-04-13 17:59:14,593 INFO L87 Difference]: Start difference. First operand 57 states and 132 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:14,662 INFO L93 Difference]: Finished difference Result 69 states and 155 transitions. [2025-04-13 17:59:14,662 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 17:59:14,662 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:14,663 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:14,663 INFO L225 Difference]: With dead ends: 69 [2025-04-13 17:59:14,663 INFO L226 Difference]: Without dead ends: 61 [2025-04-13 17:59:14,663 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:14,664 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:14,664 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:14,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-04-13 17:59:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2025-04-13 17:59:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 2.3518518518518516) internal successors, (127), 54 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 127 transitions. [2025-04-13 17:59:14,667 INFO L79 Accepts]: Start accepts. Automaton has 55 states and 127 transitions. Word has length 13 [2025-04-13 17:59:14,667 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:14,667 INFO L485 AbstractCegarLoop]: Abstraction has 55 states and 127 transitions. [2025-04-13 17:59:14,668 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,668 INFO L278 IsEmpty]: Start isEmpty. Operand 55 states and 127 transitions. [2025-04-13 17:59:14,668 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:14,668 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:14,668 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:14,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-13 17:59:14,868 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-04-13 17:59:14,869 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:14,869 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:14,869 INFO L85 PathProgramCache]: Analyzing trace with hash 826559071, now seen corresponding path program 6 times [2025-04-13 17:59:14,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:14,869 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611315881] [2025-04-13 17:59:14,869 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:14,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:14,873 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:14,878 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:14,878 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:14,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:14,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:14,904 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611315881] [2025-04-13 17:59:14,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611315881] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:59:14,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:59:14,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-13 17:59:14,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129232602] [2025-04-13 17:59:14,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:59:14,905 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:59:14,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:14,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:59:14,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:14,905 INFO L87 Difference]: Start difference. First operand 55 states and 127 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:14,934 INFO L93 Difference]: Finished difference Result 64 states and 139 transitions. [2025-04-13 17:59:14,934 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:59:14,934 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:14,934 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:14,935 INFO L225 Difference]: With dead ends: 64 [2025-04-13 17:59:14,935 INFO L226 Difference]: Without dead ends: 53 [2025-04-13 17:59:14,935 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:59:14,935 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:14,935 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:59:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-04-13 17:59:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2025-04-13 17:59:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 2.3461538461538463) internal successors, (122), 52 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 122 transitions. [2025-04-13 17:59:14,940 INFO L79 Accepts]: Start accepts. Automaton has 53 states and 122 transitions. Word has length 13 [2025-04-13 17:59:14,940 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:14,940 INFO L485 AbstractCegarLoop]: Abstraction has 53 states and 122 transitions. [2025-04-13 17:59:14,940 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:14,940 INFO L278 IsEmpty]: Start isEmpty. Operand 53 states and 122 transitions. [2025-04-13 17:59:14,940 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:14,940 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:14,943 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:14,943 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-13 17:59:14,943 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:14,943 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1751456478, now seen corresponding path program 6 times [2025-04-13 17:59:14,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:14,944 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910847400] [2025-04-13 17:59:14,944 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:14,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:14,947 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:14,952 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:14,952 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:14,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:14,984 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 17:59:14,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:14,984 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910847400] [2025-04-13 17:59:14,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910847400] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:14,985 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236893029] [2025-04-13 17:59:14,985 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:14,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:14,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:14,986 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 17:59:14,988 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 17:59:15,016 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:15,027 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:15,027 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:15,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:15,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-13 17:59:15,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:15,041 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 17:59:15,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:15,055 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 17:59:15,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236893029] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:15,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:15,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-04-13 17:59:15,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855740634] [2025-04-13 17:59:15,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:15,055 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 17:59:15,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:15,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 17:59:15,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-04-13 17:59:15,056 INFO L87 Difference]: Start difference. First operand 53 states and 122 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:15,123 INFO L93 Difference]: Finished difference Result 64 states and 141 transitions. [2025-04-13 17:59:15,123 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:15,123 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-04-13 17:59:15,123 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:15,124 INFO L225 Difference]: With dead ends: 64 [2025-04-13 17:59:15,124 INFO L226 Difference]: Without dead ends: 56 [2025-04-13 17:59:15,124 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:15,124 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:15,124 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-04-13 17:59:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2025-04-13 17:59:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.297872340425532) internal successors, (108), 47 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 108 transitions. [2025-04-13 17:59:15,127 INFO L79 Accepts]: Start accepts. Automaton has 48 states and 108 transitions. Word has length 13 [2025-04-13 17:59:15,127 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:15,127 INFO L485 AbstractCegarLoop]: Abstraction has 48 states and 108 transitions. [2025-04-13 17:59:15,127 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:15,127 INFO L278 IsEmpty]: Start isEmpty. Operand 48 states and 108 transitions. [2025-04-13 17:59:15,128 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:59:15,128 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:15,128 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:15,133 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 17:59:15,332 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:15,332 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:15,332 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1793205785, now seen corresponding path program 1 times [2025-04-13 17:59:15,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:15,332 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512540587] [2025-04-13 17:59:15,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:59:15,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:15,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:59:15,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:15,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:15,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:15,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:15,498 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512540587] [2025-04-13 17:59:15,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512540587] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:15,498 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78259852] [2025-04-13 17:59:15,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:59:15,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:15,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:15,500 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 17:59:15,501 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 17:59:15,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:59:15,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:15,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:15,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:15,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 17:59:15,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:15,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:15,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78259852] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:15,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:15,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-04-13 17:59:15,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59308709] [2025-04-13 17:59:15,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:15,776 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 17:59:15,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:15,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 17:59:15,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-04-13 17:59:15,776 INFO L87 Difference]: Start difference. First operand 48 states and 108 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:15,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:15,902 INFO L93 Difference]: Finished difference Result 70 states and 152 transitions. [2025-04-13 17:59:15,902 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:15,902 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 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 17:59:15,902 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:15,903 INFO L225 Difference]: With dead ends: 70 [2025-04-13 17:59:15,903 INFO L226 Difference]: Without dead ends: 65 [2025-04-13 17:59:15,903 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:15,903 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:15,904 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-04-13 17:59:15,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2025-04-13 17:59:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.2950819672131146) internal successors, (140), 61 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 140 transitions. [2025-04-13 17:59:15,908 INFO L79 Accepts]: Start accepts. Automaton has 62 states and 140 transitions. Word has length 14 [2025-04-13 17:59:15,908 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:15,908 INFO L485 AbstractCegarLoop]: Abstraction has 62 states and 140 transitions. [2025-04-13 17:59:15,908 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:15,908 INFO L278 IsEmpty]: Start isEmpty. Operand 62 states and 140 transitions. [2025-04-13 17:59:15,908 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:59:15,908 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:15,908 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:15,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-13 17:59:16,109 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:16,109 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:16,109 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:16,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2017851041, now seen corresponding path program 2 times [2025-04-13 17:59:16,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:16,109 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030740506] [2025-04-13 17:59:16,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:16,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:16,113 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:59:16,120 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:16,120 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:16,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:16,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:16,263 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030740506] [2025-04-13 17:59:16,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030740506] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:16,263 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680311115] [2025-04-13 17:59:16,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:16,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:16,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:16,265 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:16,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-13 17:59:16,297 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:59:16,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:16,310 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:16,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:16,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 17:59:16,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:16,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:16,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680311115] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:16,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:16,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-04-13 17:59:16,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930951590] [2025-04-13 17:59:16,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:16,497 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 17:59:16,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:16,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 17:59:16,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:59:16,498 INFO L87 Difference]: Start difference. First operand 62 states and 140 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:16,658 INFO L93 Difference]: Finished difference Result 82 states and 175 transitions. [2025-04-13 17:59:16,658 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:16,658 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-13 17:59:16,658 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:16,659 INFO L225 Difference]: With dead ends: 82 [2025-04-13 17:59:16,659 INFO L226 Difference]: Without dead ends: 77 [2025-04-13 17:59:16,659 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:16,659 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:16,659 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-04-13 17:59:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2025-04-13 17:59:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.365079365079365) internal successors, (149), 63 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 149 transitions. [2025-04-13 17:59:16,666 INFO L79 Accepts]: Start accepts. Automaton has 64 states and 149 transitions. Word has length 14 [2025-04-13 17:59:16,666 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:16,666 INFO L485 AbstractCegarLoop]: Abstraction has 64 states and 149 transitions. [2025-04-13 17:59:16,666 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:16,666 INFO L278 IsEmpty]: Start isEmpty. Operand 64 states and 149 transitions. [2025-04-13 17:59:16,666 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:59:16,666 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:16,666 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:16,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:16,867 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 17:59:16,867 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:16,868 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:16,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1934734151, now seen corresponding path program 3 times [2025-04-13 17:59:16,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:16,868 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046295405] [2025-04-13 17:59:16,868 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:16,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:16,872 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:59:16,877 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:16,878 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:16,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:17,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:17,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046295405] [2025-04-13 17:59:17,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046295405] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:17,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143123055] [2025-04-13 17:59:17,012 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:17,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:17,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:17,014 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:17,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-13 17:59:17,047 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:59:17,059 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:17,059 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:17,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:17,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 17:59:17,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:17,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:17,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143123055] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:17,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:17,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-04-13 17:59:17,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568245134] [2025-04-13 17:59:17,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:17,242 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:17,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:17,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:17,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:17,242 INFO L87 Difference]: Start difference. First operand 64 states and 149 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:17,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:17,352 INFO L93 Difference]: Finished difference Result 74 states and 163 transitions. [2025-04-13 17:59:17,352 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:17,353 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-13 17:59:17,353 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:17,353 INFO L225 Difference]: With dead ends: 74 [2025-04-13 17:59:17,353 INFO L226 Difference]: Without dead ends: 69 [2025-04-13 17:59:17,354 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:17,354 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:17,354 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:17,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-04-13 17:59:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 64. [2025-04-13 17:59:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.365079365079365) internal successors, (149), 63 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 149 transitions. [2025-04-13 17:59:17,362 INFO L79 Accepts]: Start accepts. Automaton has 64 states and 149 transitions. Word has length 14 [2025-04-13 17:59:17,362 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:17,362 INFO L485 AbstractCegarLoop]: Abstraction has 64 states and 149 transitions. [2025-04-13 17:59:17,362 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:17,365 INFO L278 IsEmpty]: Start isEmpty. Operand 64 states and 149 transitions. [2025-04-13 17:59:17,365 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:59:17,365 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:17,365 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:17,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-13 17:59:17,566 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-04-13 17:59:17,566 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:17,566 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:17,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1512040615, now seen corresponding path program 4 times [2025-04-13 17:59:17,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:17,566 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248978570] [2025-04-13 17:59:17,566 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:17,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:17,570 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:59:17,573 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:17,573 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:17,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:17,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:17,674 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248978570] [2025-04-13 17:59:17,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248978570] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:17,674 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483532333] [2025-04-13 17:59:17,674 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:17,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:17,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:17,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:17,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-13 17:59:17,707 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:59:17,718 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:17,718 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:17,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:17,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 17:59:17,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:17,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:17,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483532333] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:17,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:17,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-04-13 17:59:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809332385] [2025-04-13 17:59:17,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:17,863 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 17:59:17,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:17,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 17:59:17,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-04-13 17:59:17,864 INFO L87 Difference]: Start difference. First operand 64 states and 149 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:17,962 INFO L93 Difference]: Finished difference Result 89 states and 199 transitions. [2025-04-13 17:59:17,965 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:17,966 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 17:59:17,966 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:17,966 INFO L225 Difference]: With dead ends: 89 [2025-04-13 17:59:17,966 INFO L226 Difference]: Without dead ends: 84 [2025-04-13 17:59:17,967 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:17,967 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:17,967 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-04-13 17:59:17,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 70. [2025-04-13 17:59:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.4927536231884058) internal successors, (172), 69 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 172 transitions. [2025-04-13 17:59:17,975 INFO L79 Accepts]: Start accepts. Automaton has 70 states and 172 transitions. Word has length 14 [2025-04-13 17:59:17,975 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:17,975 INFO L485 AbstractCegarLoop]: Abstraction has 70 states and 172 transitions. [2025-04-13 17:59:17,975 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:17,975 INFO L278 IsEmpty]: Start isEmpty. Operand 70 states and 172 transitions. [2025-04-13 17:59:17,976 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:59:17,976 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:17,976 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:17,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-13 17:59:18,176 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-04-13 17:59:18,176 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:18,177 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:18,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1428923725, now seen corresponding path program 5 times [2025-04-13 17:59:18,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:18,177 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107421270] [2025-04-13 17:59:18,177 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:18,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:18,180 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:59:18,184 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:18,184 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:18,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:18,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:18,308 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107421270] [2025-04-13 17:59:18,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107421270] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:18,308 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503207410] [2025-04-13 17:59:18,308 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:18,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:18,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:18,310 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:18,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-04-13 17:59:18,343 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:59:18,354 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:18,354 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:18,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:18,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 17:59:18,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:18,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:18,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503207410] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:18,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:18,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-04-13 17:59:18,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390641492] [2025-04-13 17:59:18,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:18,523 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 17:59:18,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:18,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 17:59:18,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:18,524 INFO L87 Difference]: Start difference. First operand 70 states and 172 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:18,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:18,627 INFO L93 Difference]: Finished difference Result 91 states and 201 transitions. [2025-04-13 17:59:18,627 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:18,627 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-13 17:59:18,627 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:18,628 INFO L225 Difference]: With dead ends: 91 [2025-04-13 17:59:18,628 INFO L226 Difference]: Without dead ends: 86 [2025-04-13 17:59:18,628 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:59:18,628 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:18,629 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-04-13 17:59:18,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 68. [2025-04-13 17:59:18,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.4328358208955225) internal successors, (163), 67 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:18,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 163 transitions. [2025-04-13 17:59:18,634 INFO L79 Accepts]: Start accepts. Automaton has 68 states and 163 transitions. Word has length 14 [2025-04-13 17:59:18,634 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:18,635 INFO L485 AbstractCegarLoop]: Abstraction has 68 states and 163 transitions. [2025-04-13 17:59:18,635 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:18,635 INFO L278 IsEmpty]: Start isEmpty. Operand 68 states and 163 transitions. [2025-04-13 17:59:18,635 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:59:18,635 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:18,635 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:18,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:18,835 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:18,836 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:18,836 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 288825335, now seen corresponding path program 6 times [2025-04-13 17:59:18,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:18,836 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983492876] [2025-04-13 17:59:18,836 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:18,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:18,839 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:59:18,844 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:18,844 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:18,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:18,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:18,946 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983492876] [2025-04-13 17:59:18,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983492876] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:18,946 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069095450] [2025-04-13 17:59:18,946 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:18,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:18,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:18,948 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:18,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-04-13 17:59:18,978 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:59:18,989 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:59:18,989 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:18,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:18,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 17:59:18,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:19,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069095450] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:19,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:19,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-04-13 17:59:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407830711] [2025-04-13 17:59:19,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:19,151 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 17:59:19,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:19,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 17:59:19,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-04-13 17:59:19,152 INFO L87 Difference]: Start difference. First operand 68 states and 163 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:19,254 INFO L93 Difference]: Finished difference Result 79 states and 178 transitions. [2025-04-13 17:59:19,255 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:19,255 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 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 17:59:19,255 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:19,255 INFO L225 Difference]: With dead ends: 79 [2025-04-13 17:59:19,255 INFO L226 Difference]: Without dead ends: 74 [2025-04-13 17:59:19,255 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:19,256 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:19,256 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:19,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-04-13 17:59:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2025-04-13 17:59:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 2.380281690140845) internal successors, (169), 71 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 169 transitions. [2025-04-13 17:59:19,261 INFO L79 Accepts]: Start accepts. Automaton has 72 states and 169 transitions. Word has length 14 [2025-04-13 17:59:19,261 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:19,261 INFO L485 AbstractCegarLoop]: Abstraction has 72 states and 169 transitions. [2025-04-13 17:59:19,261 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:19,261 INFO L278 IsEmpty]: Start isEmpty. Operand 72 states and 169 transitions. [2025-04-13 17:59:19,261 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:19,261 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:19,262 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:19,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-04-13 17:59:19,462 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:19,462 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:19,463 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:19,463 INFO L85 PathProgramCache]: Analyzing trace with hash -206913853, now seen corresponding path program 7 times [2025-04-13 17:59:19,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:19,463 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579208415] [2025-04-13 17:59:19,463 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:19,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:19,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:19,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:19,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:19,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:19,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:19,516 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579208415] [2025-04-13 17:59:19,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579208415] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:19,517 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842703760] [2025-04-13 17:59:19,517 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:19,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:19,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:19,518 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:19,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-04-13 17:59:19,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:19,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:19,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:19,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:19,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:19,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:19,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:19,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:19,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842703760] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:19,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:19,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-04-13 17:59:19,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207570740] [2025-04-13 17:59:19,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:19,615 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 17:59:19,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:19,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 17:59:19,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-04-13 17:59:19,616 INFO L87 Difference]: Start difference. First operand 72 states and 169 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:19,712 INFO L93 Difference]: Finished difference Result 103 states and 225 transitions. [2025-04-13 17:59:19,712 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:19,713 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:19,713 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:19,714 INFO L225 Difference]: With dead ends: 103 [2025-04-13 17:59:19,714 INFO L226 Difference]: Without dead ends: 84 [2025-04-13 17:59:19,714 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-04-13 17:59:19,714 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:19,714 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-04-13 17:59:19,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2025-04-13 17:59:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 2.393939393939394) internal successors, (158), 66 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 158 transitions. [2025-04-13 17:59:19,719 INFO L79 Accepts]: Start accepts. Automaton has 67 states and 158 transitions. Word has length 15 [2025-04-13 17:59:19,719 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:19,719 INFO L485 AbstractCegarLoop]: Abstraction has 67 states and 158 transitions. [2025-04-13 17:59:19,719 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:19,720 INFO L278 IsEmpty]: Start isEmpty. Operand 67 states and 158 transitions. [2025-04-13 17:59:19,721 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:19,721 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:19,721 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:19,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:19,921 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-04-13 17:59:19,922 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:19,922 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:19,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1692675010, now seen corresponding path program 8 times [2025-04-13 17:59:19,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:19,922 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883409279] [2025-04-13 17:59:19,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:19,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:19,925 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:19,929 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:19,930 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:19,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:19,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:19,971 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883409279] [2025-04-13 17:59:19,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883409279] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:19,971 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015785063] [2025-04-13 17:59:19,972 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:19,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:19,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:19,973 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:19,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-04-13 17:59:20,006 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:20,020 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:20,020 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:20,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:20,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:20,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:20,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:20,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015785063] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:20,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:20,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-04-13 17:59:20,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78678279] [2025-04-13 17:59:20,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:20,082 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 17:59:20,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:20,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 17:59:20,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-04-13 17:59:20,082 INFO L87 Difference]: Start difference. First operand 67 states and 158 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:20,195 INFO L93 Difference]: Finished difference Result 101 states and 230 transitions. [2025-04-13 17:59:20,195 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:59:20,196 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:20,196 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:20,196 INFO L225 Difference]: With dead ends: 101 [2025-04-13 17:59:20,196 INFO L226 Difference]: Without dead ends: 94 [2025-04-13 17:59:20,196 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:20,197 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:20,197 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-04-13 17:59:20,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 69. [2025-04-13 17:59:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.426470588235294) internal successors, (165), 68 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 165 transitions. [2025-04-13 17:59:20,202 INFO L79 Accepts]: Start accepts. Automaton has 69 states and 165 transitions. Word has length 15 [2025-04-13 17:59:20,202 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:20,203 INFO L485 AbstractCegarLoop]: Abstraction has 69 states and 165 transitions. [2025-04-13 17:59:20,203 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:20,203 INFO L278 IsEmpty]: Start isEmpty. Operand 69 states and 165 transitions. [2025-04-13 17:59:20,203 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:20,203 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:20,203 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:20,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:20,403 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:20,404 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:20,404 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:20,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1511817787, now seen corresponding path program 9 times [2025-04-13 17:59:20,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:20,404 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042458028] [2025-04-13 17:59:20,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:20,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:20,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:20,410 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:20,410 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:20,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:20,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:20,445 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042458028] [2025-04-13 17:59:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042458028] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:20,446 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379565451] [2025-04-13 17:59:20,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:20,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:20,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:20,447 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:20,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-04-13 17:59:20,478 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:20,491 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:20,492 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:20,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:20,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:20,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:20,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:20,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379565451] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:20,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:20,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 17:59:20,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301782063] [2025-04-13 17:59:20,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:20,551 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:20,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:20,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:20,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:20,552 INFO L87 Difference]: Start difference. First operand 69 states and 165 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:20,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:20,672 INFO L93 Difference]: Finished difference Result 110 states and 269 transitions. [2025-04-13 17:59:20,672 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:59:20,672 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:20,672 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:20,673 INFO L225 Difference]: With dead ends: 110 [2025-04-13 17:59:20,673 INFO L226 Difference]: Without dead ends: 96 [2025-04-13 17:59:20,673 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:20,673 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:20,673 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-04-13 17:59:20,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2025-04-13 17:59:20,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.5280898876404496) internal successors, (225), 89 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 225 transitions. [2025-04-13 17:59:20,680 INFO L79 Accepts]: Start accepts. Automaton has 90 states and 225 transitions. Word has length 15 [2025-04-13 17:59:20,680 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:20,680 INFO L485 AbstractCegarLoop]: Abstraction has 90 states and 225 transitions. [2025-04-13 17:59:20,680 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:20,680 INFO L278 IsEmpty]: Start isEmpty. Operand 90 states and 225 transitions. [2025-04-13 17:59:20,681 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:20,681 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:20,681 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:20,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:20,881 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:20,881 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:20,881 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:20,882 INFO L85 PathProgramCache]: Analyzing trace with hash 975945120, now seen corresponding path program 10 times [2025-04-13 17:59:20,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:20,882 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082373613] [2025-04-13 17:59:20,882 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:20,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:20,885 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:20,888 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:20,888 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:20,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:20,920 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082373613] [2025-04-13 17:59:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082373613] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:20,920 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9698906] [2025-04-13 17:59:20,920 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:20,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:20,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:20,922 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:20,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-04-13 17:59:20,952 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:20,965 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:20,965 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:20,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:20,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:20,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:20,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:21,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9698906] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:21,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:21,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-04-13 17:59:21,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498288821] [2025-04-13 17:59:21,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:21,019 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 17:59:21,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:21,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 17:59:21,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:21,019 INFO L87 Difference]: Start difference. First operand 90 states and 225 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:21,150 INFO L93 Difference]: Finished difference Result 140 states and 357 transitions. [2025-04-13 17:59:21,150 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 17:59:21,150 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 17:59:21,151 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:21,151 INFO L225 Difference]: With dead ends: 140 [2025-04-13 17:59:21,151 INFO L226 Difference]: Without dead ends: 133 [2025-04-13 17:59:21,152 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:59:21,152 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:21,153 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:21,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-04-13 17:59:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 100. [2025-04-13 17:59:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.606060606060606) internal successors, (258), 99 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 258 transitions. [2025-04-13 17:59:21,161 INFO L79 Accepts]: Start accepts. Automaton has 100 states and 258 transitions. Word has length 15 [2025-04-13 17:59:21,161 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:21,161 INFO L485 AbstractCegarLoop]: Abstraction has 100 states and 258 transitions. [2025-04-13 17:59:21,161 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:21,161 INFO L278 IsEmpty]: Start isEmpty. Operand 100 states and 258 transitions. [2025-04-13 17:59:21,162 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:21,162 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:21,162 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:21,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-04-13 17:59:21,362 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-04-13 17:59:21,362 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:21,363 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1909408829, now seen corresponding path program 11 times [2025-04-13 17:59:21,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:21,363 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290059159] [2025-04-13 17:59:21,363 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:21,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:21,366 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:21,369 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:21,369 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:21,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:21,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:21,408 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290059159] [2025-04-13 17:59:21,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290059159] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:21,408 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453803940] [2025-04-13 17:59:21,408 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:21,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:21,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:21,410 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:21,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-04-13 17:59:21,442 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:21,454 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:21,455 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:21,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:21,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:21,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:21,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453803940] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:21,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:21,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-04-13 17:59:21,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929958864] [2025-04-13 17:59:21,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:21,507 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 17:59:21,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:21,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 17:59:21,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:21,508 INFO L87 Difference]: Start difference. First operand 100 states and 258 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:21,619 INFO L93 Difference]: Finished difference Result 121 states and 313 transitions. [2025-04-13 17:59:21,620 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 17:59:21,620 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:21,620 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:21,620 INFO L225 Difference]: With dead ends: 121 [2025-04-13 17:59:21,620 INFO L226 Difference]: Without dead ends: 107 [2025-04-13 17:59:21,621 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:59:21,621 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:21,622 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-04-13 17:59:21,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2025-04-13 17:59:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.6526315789473682) internal successors, (252), 95 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:21,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 252 transitions. [2025-04-13 17:59:21,630 INFO L79 Accepts]: Start accepts. Automaton has 96 states and 252 transitions. Word has length 15 [2025-04-13 17:59:21,630 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:21,630 INFO L485 AbstractCegarLoop]: Abstraction has 96 states and 252 transitions. [2025-04-13 17:59:21,630 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:21,630 INFO L278 IsEmpty]: Start isEmpty. Operand 96 states and 252 transitions. [2025-04-13 17:59:21,631 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:21,631 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:21,631 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:21,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:21,835 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:21,835 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:21,835 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1612571390, now seen corresponding path program 12 times [2025-04-13 17:59:21,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:21,835 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261287996] [2025-04-13 17:59:21,835 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:21,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:21,838 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:21,841 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:21,841 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:21,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:21,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:21,876 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261287996] [2025-04-13 17:59:21,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261287996] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:21,876 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644312162] [2025-04-13 17:59:21,876 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:21,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:21,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:21,878 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:21,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-04-13 17:59:21,910 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:21,927 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:21,928 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:21,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:21,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:21,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:21,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:22,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644312162] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:22,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:22,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-04-13 17:59:22,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166592742] [2025-04-13 17:59:22,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:22,010 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 17:59:22,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:22,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 17:59:22,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:59:22,010 INFO L87 Difference]: Start difference. First operand 96 states and 252 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:22,203 INFO L93 Difference]: Finished difference Result 146 states and 400 transitions. [2025-04-13 17:59:22,203 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 17:59:22,204 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:22,204 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:22,204 INFO L225 Difference]: With dead ends: 146 [2025-04-13 17:59:22,204 INFO L226 Difference]: Without dead ends: 139 [2025-04-13 17:59:22,205 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:59:22,205 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:22,205 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-04-13 17:59:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 110. [2025-04-13 17:59:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.7981651376146788) internal successors, (305), 109 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 305 transitions. [2025-04-13 17:59:22,216 INFO L79 Accepts]: Start accepts. Automaton has 110 states and 305 transitions. Word has length 15 [2025-04-13 17:59:22,216 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:22,216 INFO L485 AbstractCegarLoop]: Abstraction has 110 states and 305 transitions. [2025-04-13 17:59:22,216 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:22,216 INFO L278 IsEmpty]: Start isEmpty. Operand 110 states and 305 transitions. [2025-04-13 17:59:22,216 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:22,216 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:22,216 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:22,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-04-13 17:59:22,421 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:22,421 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:22,421 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 188294560, now seen corresponding path program 13 times [2025-04-13 17:59:22,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:22,421 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511776368] [2025-04-13 17:59:22,421 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:22,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:22,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:22,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:22,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:22,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:22,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:22,460 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511776368] [2025-04-13 17:59:22,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511776368] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:22,460 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143935887] [2025-04-13 17:59:22,460 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:22,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:22,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:22,463 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:22,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-04-13 17:59:22,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:22,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:22,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:22,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:22,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:22,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:22,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:22,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143935887] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:22,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:22,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-04-13 17:59:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759181097] [2025-04-13 17:59:22,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:22,574 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 17:59:22,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:22,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 17:59:22,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:59:22,574 INFO L87 Difference]: Start difference. First operand 110 states and 305 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:22,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:22,702 INFO L93 Difference]: Finished difference Result 129 states and 346 transitions. [2025-04-13 17:59:22,702 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 17:59:22,702 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:22,702 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:22,703 INFO L225 Difference]: With dead ends: 129 [2025-04-13 17:59:22,703 INFO L226 Difference]: Without dead ends: 120 [2025-04-13 17:59:22,703 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-04-13 17:59:22,703 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:22,704 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-04-13 17:59:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2025-04-13 17:59:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.7567567567567566) internal successors, (306), 111 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 306 transitions. [2025-04-13 17:59:22,713 INFO L79 Accepts]: Start accepts. Automaton has 112 states and 306 transitions. Word has length 15 [2025-04-13 17:59:22,713 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:22,713 INFO L485 AbstractCegarLoop]: Abstraction has 112 states and 306 transitions. [2025-04-13 17:59:22,713 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:22,713 INFO L278 IsEmpty]: Start isEmpty. Operand 112 states and 306 transitions. [2025-04-13 17:59:22,714 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:22,714 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:22,714 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:22,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:22,918 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:22,918 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:22,918 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:22,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1049939653, now seen corresponding path program 14 times [2025-04-13 17:59:22,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:22,918 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811004394] [2025-04-13 17:59:22,918 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:22,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:22,921 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:22,924 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:22,924 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:22,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:22,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:22,959 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811004394] [2025-04-13 17:59:22,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811004394] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:22,959 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353240771] [2025-04-13 17:59:22,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:22,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:22,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:22,961 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:22,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-04-13 17:59:22,991 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:23,004 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:23,004 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:23,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:23,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:23,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:23,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:23,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353240771] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:23,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:23,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-04-13 17:59:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82167266] [2025-04-13 17:59:23,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:23,066 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 17:59:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:23,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 17:59:23,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:59:23,066 INFO L87 Difference]: Start difference. First operand 112 states and 306 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:23,218 INFO L93 Difference]: Finished difference Result 138 states and 366 transitions. [2025-04-13 17:59:23,218 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 17:59:23,218 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:23,218 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:23,219 INFO L225 Difference]: With dead ends: 138 [2025-04-13 17:59:23,219 INFO L226 Difference]: Without dead ends: 130 [2025-04-13 17:59:23,219 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:23,219 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:23,219 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:23,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-04-13 17:59:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 110. [2025-04-13 17:59:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.743119266055046) internal successors, (299), 109 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 299 transitions. [2025-04-13 17:59:23,229 INFO L79 Accepts]: Start accepts. Automaton has 110 states and 299 transitions. Word has length 15 [2025-04-13 17:59:23,229 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:23,229 INFO L485 AbstractCegarLoop]: Abstraction has 110 states and 299 transitions. [2025-04-13 17:59:23,229 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:23,229 INFO L278 IsEmpty]: Start isEmpty. Operand 110 states and 299 transitions. [2025-04-13 17:59:23,230 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:23,230 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:23,230 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:23,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-04-13 17:59:23,430 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-04-13 17:59:23,430 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:23,431 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1537058944, now seen corresponding path program 15 times [2025-04-13 17:59:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:23,431 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448813560] [2025-04-13 17:59:23,431 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:23,433 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:23,436 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:23,436 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:23,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:23,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:23,473 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448813560] [2025-04-13 17:59:23,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448813560] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:23,473 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159092248] [2025-04-13 17:59:23,473 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:23,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:23,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:23,475 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:23,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-04-13 17:59:23,502 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:23,512 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:23,512 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:23,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:23,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:23,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:23,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:23,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159092248] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:23,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:23,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-04-13 17:59:23,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002712544] [2025-04-13 17:59:23,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:23,575 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:23,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:23,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:23,575 INFO L87 Difference]: Start difference. First operand 110 states and 299 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:23,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:23,829 INFO L93 Difference]: Finished difference Result 182 states and 479 transitions. [2025-04-13 17:59:23,829 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 17:59:23,830 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:23,830 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:23,831 INFO L225 Difference]: With dead ends: 182 [2025-04-13 17:59:23,831 INFO L226 Difference]: Without dead ends: 175 [2025-04-13 17:59:23,831 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:59:23,831 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:23,832 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-04-13 17:59:23,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2025-04-13 17:59:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.7876106194690267) internal successors, (315), 113 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:23,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 315 transitions. [2025-04-13 17:59:23,847 INFO L79 Accepts]: Start accepts. Automaton has 114 states and 315 transitions. Word has length 15 [2025-04-13 17:59:23,847 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:23,847 INFO L485 AbstractCegarLoop]: Abstraction has 114 states and 315 transitions. [2025-04-13 17:59:23,847 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:23,847 INFO L278 IsEmpty]: Start isEmpty. Operand 114 states and 315 transitions. [2025-04-13 17:59:23,847 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:23,847 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:23,847 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:23,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-13 17:59:24,048 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-04-13 17:59:24,048 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:24,048 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:24,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1182649928, now seen corresponding path program 16 times [2025-04-13 17:59:24,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:24,048 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583189514] [2025-04-13 17:59:24,049 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:24,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:24,051 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:24,059 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:24,059 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:24,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:24,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:24,090 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583189514] [2025-04-13 17:59:24,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583189514] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:24,090 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448353902] [2025-04-13 17:59:24,090 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:24,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:24,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:24,092 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:24,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-04-13 17:59:24,123 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:24,135 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:24,135 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:24,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:24,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:24,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:24,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:24,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:24,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448353902] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:24,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:24,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2025-04-13 17:59:24,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889157891] [2025-04-13 17:59:24,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:24,193 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 17:59:24,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:24,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 17:59:24,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:24,193 INFO L87 Difference]: Start difference. First operand 114 states and 315 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:24,356 INFO L93 Difference]: Finished difference Result 181 states and 521 transitions. [2025-04-13 17:59:24,356 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 17:59:24,356 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:24,356 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:24,357 INFO L225 Difference]: With dead ends: 181 [2025-04-13 17:59:24,357 INFO L226 Difference]: Without dead ends: 174 [2025-04-13 17:59:24,358 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:59:24,358 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:24,358 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-04-13 17:59:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 136. [2025-04-13 17:59:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.962962962962963) internal successors, (400), 135 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 400 transitions. [2025-04-13 17:59:24,372 INFO L79 Accepts]: Start accepts. Automaton has 136 states and 400 transitions. Word has length 15 [2025-04-13 17:59:24,372 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:24,372 INFO L485 AbstractCegarLoop]: Abstraction has 136 states and 400 transitions. [2025-04-13 17:59:24,372 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:24,372 INFO L278 IsEmpty]: Start isEmpty. Operand 136 states and 400 transitions. [2025-04-13 17:59:24,372 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:24,372 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:24,372 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:24,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:24,572 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:24,573 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:24,573 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:24,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1311451418, now seen corresponding path program 17 times [2025-04-13 17:59:24,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:24,573 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070581540] [2025-04-13 17:59:24,573 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:24,576 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:24,579 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:24,579 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:24,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:24,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:24,608 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070581540] [2025-04-13 17:59:24,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070581540] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:24,609 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448132561] [2025-04-13 17:59:24,609 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:24,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:24,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:24,610 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:24,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-04-13 17:59:24,639 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:24,649 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:24,649 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:24,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:24,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:24,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:24,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448132561] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:24,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:24,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2025-04-13 17:59:24,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871256858] [2025-04-13 17:59:24,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:24,691 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 17:59:24,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:24,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 17:59:24,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:24,692 INFO L87 Difference]: Start difference. First operand 136 states and 400 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:24,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:24,789 INFO L93 Difference]: Finished difference Result 159 states and 459 transitions. [2025-04-13 17:59:24,789 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:59:24,790 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 17:59:24,790 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:24,790 INFO L225 Difference]: With dead ends: 159 [2025-04-13 17:59:24,790 INFO L226 Difference]: Without dead ends: 150 [2025-04-13 17:59:24,791 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:24,791 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:24,791 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:24,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-04-13 17:59:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2025-04-13 17:59:24,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.948148148148148) internal successors, (398), 135 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 398 transitions. [2025-04-13 17:59:24,804 INFO L79 Accepts]: Start accepts. Automaton has 136 states and 398 transitions. Word has length 15 [2025-04-13 17:59:24,805 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:24,805 INFO L485 AbstractCegarLoop]: Abstraction has 136 states and 398 transitions. [2025-04-13 17:59:24,805 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:24,805 INFO L278 IsEmpty]: Start isEmpty. Operand 136 states and 398 transitions. [2025-04-13 17:59:24,805 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:24,805 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:24,805 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:24,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:25,005 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:25,006 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:25,006 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash 399161890, now seen corresponding path program 18 times [2025-04-13 17:59:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:25,006 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957931178] [2025-04-13 17:59:25,006 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:25,009 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:25,012 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:25,012 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:25,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:25,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:25,051 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957931178] [2025-04-13 17:59:25,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957931178] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:25,051 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272013350] [2025-04-13 17:59:25,051 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:25,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:25,053 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:25,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-04-13 17:59:25,087 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:25,100 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:25,100 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:25,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:25,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:25,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:25,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:25,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272013350] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:25,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:25,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-04-13 17:59:25,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406521107] [2025-04-13 17:59:25,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:25,167 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:25,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:25,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:25,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:25,168 INFO L87 Difference]: Start difference. First operand 136 states and 398 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:25,345 INFO L93 Difference]: Finished difference Result 183 states and 527 transitions. [2025-04-13 17:59:25,345 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 17:59:25,345 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:25,345 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:25,346 INFO L225 Difference]: With dead ends: 183 [2025-04-13 17:59:25,346 INFO L226 Difference]: Without dead ends: 172 [2025-04-13 17:59:25,347 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:59:25,347 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:25,347 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:25,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-04-13 17:59:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 152. [2025-04-13 17:59:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 3.006622516556291) internal successors, (454), 151 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:25,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 454 transitions. [2025-04-13 17:59:25,363 INFO L79 Accepts]: Start accepts. Automaton has 152 states and 454 transitions. Word has length 15 [2025-04-13 17:59:25,363 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:25,363 INFO L485 AbstractCegarLoop]: Abstraction has 152 states and 454 transitions. [2025-04-13 17:59:25,364 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:25,364 INFO L278 IsEmpty]: Start isEmpty. Operand 152 states and 454 transitions. [2025-04-13 17:59:25,364 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:25,364 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:25,364 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:25,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-04-13 17:59:25,564 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:25,565 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:25,565 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:25,565 INFO L85 PathProgramCache]: Analyzing trace with hash -929823607, now seen corresponding path program 19 times [2025-04-13 17:59:25,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:25,565 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169792878] [2025-04-13 17:59:25,565 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:25,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:25,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:25,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:25,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:25,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:25,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:25,608 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169792878] [2025-04-13 17:59:25,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169792878] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:25,608 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715463559] [2025-04-13 17:59:25,608 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:25,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:25,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:25,610 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:25,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-04-13 17:59:25,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:25,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:25,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:25,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:25,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:25,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:25,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:25,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:25,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715463559] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:25,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:25,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-04-13 17:59:25,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367662832] [2025-04-13 17:59:25,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:25,706 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:25,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:25,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:25,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:25,706 INFO L87 Difference]: Start difference. First operand 152 states and 454 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:25,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:25,880 INFO L93 Difference]: Finished difference Result 203 states and 581 transitions. [2025-04-13 17:59:25,880 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 17:59:25,881 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:25,881 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:25,882 INFO L225 Difference]: With dead ends: 203 [2025-04-13 17:59:25,882 INFO L226 Difference]: Without dead ends: 186 [2025-04-13 17:59:25,882 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:59:25,882 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:25,882 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-04-13 17:59:25,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 164. [2025-04-13 17:59:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 3.0061349693251533) internal successors, (490), 163 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:25,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 490 transitions. [2025-04-13 17:59:25,900 INFO L79 Accepts]: Start accepts. Automaton has 164 states and 490 transitions. Word has length 15 [2025-04-13 17:59:25,900 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:25,900 INFO L485 AbstractCegarLoop]: Abstraction has 164 states and 490 transitions. [2025-04-13 17:59:25,900 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:25,900 INFO L278 IsEmpty]: Start isEmpty. Operand 164 states and 490 transitions. [2025-04-13 17:59:25,900 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:25,900 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:25,900 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:25,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:26,101 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-04-13 17:59:26,101 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:26,101 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:26,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1557939300, now seen corresponding path program 20 times [2025-04-13 17:59:26,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:26,101 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365932470] [2025-04-13 17:59:26,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:26,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:26,104 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:26,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:26,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:26,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:26,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:26,146 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365932470] [2025-04-13 17:59:26,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365932470] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:26,146 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925787498] [2025-04-13 17:59:26,146 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:26,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:26,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:26,148 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:26,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-04-13 17:59:26,178 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:26,188 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:26,188 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:26,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:26,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:26,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:26,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:26,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925787498] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:26,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:26,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-04-13 17:59:26,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957169827] [2025-04-13 17:59:26,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:26,251 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:26,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:26,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:26,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:26,251 INFO L87 Difference]: Start difference. First operand 164 states and 490 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:26,440 INFO L93 Difference]: Finished difference Result 210 states and 630 transitions. [2025-04-13 17:59:26,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 17:59:26,440 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:26,440 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:26,441 INFO L225 Difference]: With dead ends: 210 [2025-04-13 17:59:26,441 INFO L226 Difference]: Without dead ends: 203 [2025-04-13 17:59:26,442 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:59:26,442 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:26,442 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-04-13 17:59:26,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 174. [2025-04-13 17:59:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 3.0578034682080926) internal successors, (529), 173 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 529 transitions. [2025-04-13 17:59:26,460 INFO L79 Accepts]: Start accepts. Automaton has 174 states and 529 transitions. Word has length 15 [2025-04-13 17:59:26,460 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:26,460 INFO L485 AbstractCegarLoop]: Abstraction has 174 states and 529 transitions. [2025-04-13 17:59:26,460 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:26,460 INFO L278 IsEmpty]: Start isEmpty. Operand 174 states and 529 transitions. [2025-04-13 17:59:26,461 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:26,461 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:26,461 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:26,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-04-13 17:59:26,661 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-04-13 17:59:26,661 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:26,662 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash 770288740, now seen corresponding path program 21 times [2025-04-13 17:59:26,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:26,662 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901235973] [2025-04-13 17:59:26,662 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:26,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:26,664 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:26,667 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:26,667 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:26,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:26,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:26,701 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901235973] [2025-04-13 17:59:26,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901235973] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:26,701 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688593029] [2025-04-13 17:59:26,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:26,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:26,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:26,703 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:26,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-04-13 17:59:26,733 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:26,746 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:26,746 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:26,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:26,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:26,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:26,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:26,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688593029] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:26,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:26,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2025-04-13 17:59:26,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503245314] [2025-04-13 17:59:26,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:26,801 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:26,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:26,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:26,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:26,801 INFO L87 Difference]: Start difference. First operand 174 states and 529 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:26,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:26,927 INFO L93 Difference]: Finished difference Result 198 states and 586 transitions. [2025-04-13 17:59:26,927 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:59:26,927 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:26,927 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:26,928 INFO L225 Difference]: With dead ends: 198 [2025-04-13 17:59:26,928 INFO L226 Difference]: Without dead ends: 189 [2025-04-13 17:59:26,929 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:26,929 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:26,929 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-04-13 17:59:26,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 166. [2025-04-13 17:59:26,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 3.012121212121212) internal successors, (497), 165 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:26,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 497 transitions. [2025-04-13 17:59:26,946 INFO L79 Accepts]: Start accepts. Automaton has 166 states and 497 transitions. Word has length 15 [2025-04-13 17:59:26,946 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:26,946 INFO L485 AbstractCegarLoop]: Abstraction has 166 states and 497 transitions. [2025-04-13 17:59:26,946 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:26,946 INFO L278 IsEmpty]: Start isEmpty. Operand 166 states and 497 transitions. [2025-04-13 17:59:26,947 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:26,947 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:26,947 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:26,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-04-13 17:59:27,147 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-04-13 17:59:27,147 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:27,148 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:27,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1631933833, now seen corresponding path program 22 times [2025-04-13 17:59:27,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:27,148 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111854573] [2025-04-13 17:59:27,148 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:27,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:27,150 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:27,153 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:27,153 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:27,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:27,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:27,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:27,179 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111854573] [2025-04-13 17:59:27,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111854573] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:27,179 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071671876] [2025-04-13 17:59:27,179 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:27,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:27,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:27,181 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:27,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-04-13 17:59:27,213 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:27,226 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:27,226 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:27,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:27,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:27,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:27,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:27,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071671876] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:27,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:27,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2025-04-13 17:59:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178709579] [2025-04-13 17:59:27,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:27,267 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 17:59:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:27,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 17:59:27,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:27,267 INFO L87 Difference]: Start difference. First operand 166 states and 497 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:27,392 INFO L93 Difference]: Finished difference Result 216 states and 652 transitions. [2025-04-13 17:59:27,392 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 17:59:27,392 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 17:59:27,392 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:27,393 INFO L225 Difference]: With dead ends: 216 [2025-04-13 17:59:27,393 INFO L226 Difference]: Without dead ends: 202 [2025-04-13 17:59:27,393 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:59:27,394 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:27,394 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:27,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-04-13 17:59:27,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 186. [2025-04-13 17:59:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 3.108108108108108) internal successors, (575), 185 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 575 transitions. [2025-04-13 17:59:27,412 INFO L79 Accepts]: Start accepts. Automaton has 186 states and 575 transitions. Word has length 15 [2025-04-13 17:59:27,413 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:27,413 INFO L485 AbstractCegarLoop]: Abstraction has 186 states and 575 transitions. [2025-04-13 17:59:27,413 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:27,413 INFO L278 IsEmpty]: Start isEmpty. Operand 186 states and 575 transitions. [2025-04-13 17:59:27,413 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:27,413 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:27,413 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:27,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:27,613 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:27,614 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:27,614 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash 430543207, now seen corresponding path program 23 times [2025-04-13 17:59:27,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:27,614 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005185052] [2025-04-13 17:59:27,614 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:27,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:27,617 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:27,620 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:27,620 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:27,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:27,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:27,646 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005185052] [2025-04-13 17:59:27,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005185052] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:27,646 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207019322] [2025-04-13 17:59:27,646 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:27,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:27,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:27,648 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:27,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-04-13 17:59:27,678 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:27,691 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:27,691 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:27,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:27,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:27,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:27,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:27,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207019322] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:27,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:27,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2025-04-13 17:59:27,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157954800] [2025-04-13 17:59:27,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:27,741 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 17:59:27,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:27,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 17:59:27,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:27,741 INFO L87 Difference]: Start difference. First operand 186 states and 575 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:27,864 INFO L93 Difference]: Finished difference Result 214 states and 642 transitions. [2025-04-13 17:59:27,864 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:59:27,864 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 17:59:27,864 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:27,865 INFO L225 Difference]: With dead ends: 214 [2025-04-13 17:59:27,865 INFO L226 Difference]: Without dead ends: 203 [2025-04-13 17:59:27,865 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:27,866 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:27,866 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-04-13 17:59:27,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 190. [2025-04-13 17:59:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 3.126984126984127) internal successors, (591), 189 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 591 transitions. [2025-04-13 17:59:27,886 INFO L79 Accepts]: Start accepts. Automaton has 190 states and 591 transitions. Word has length 15 [2025-04-13 17:59:27,886 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:27,886 INFO L485 AbstractCegarLoop]: Abstraction has 190 states and 591 transitions. [2025-04-13 17:59:27,886 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:27,886 INFO L278 IsEmpty]: Start isEmpty. Operand 190 states and 591 transitions. [2025-04-13 17:59:27,886 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:27,886 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:27,886 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:27,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:28,087 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-04-13 17:59:28,087 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:28,087 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:28,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1203530284, now seen corresponding path program 24 times [2025-04-13 17:59:28,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:28,087 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160740252] [2025-04-13 17:59:28,087 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:28,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:28,090 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 3 equivalence classes. [2025-04-13 17:59:28,094 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:28,094 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:59:28,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:28,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:28,140 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160740252] [2025-04-13 17:59:28,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160740252] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:28,140 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433539659] [2025-04-13 17:59:28,140 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:28,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:28,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:28,142 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:28,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-04-13 17:59:28,176 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 3 equivalence classes. [2025-04-13 17:59:28,189 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:28,189 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:59:28,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:28,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:28,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:28,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:28,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433539659] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:28,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:28,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2025-04-13 17:59:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156046991] [2025-04-13 17:59:28,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:28,256 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:28,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:28,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:28,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:28,256 INFO L87 Difference]: Start difference. First operand 190 states and 591 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:28,423 INFO L93 Difference]: Finished difference Result 267 states and 831 transitions. [2025-04-13 17:59:28,423 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 17:59:28,423 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:28,423 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:28,424 INFO L225 Difference]: With dead ends: 267 [2025-04-13 17:59:28,424 INFO L226 Difference]: Without dead ends: 260 [2025-04-13 17:59:28,425 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:59:28,425 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:28,425 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2025-04-13 17:59:28,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2025-04-13 17:59:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.2511415525114153) internal successors, (712), 219 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:28,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 712 transitions. [2025-04-13 17:59:28,451 INFO L79 Accepts]: Start accepts. Automaton has 220 states and 712 transitions. Word has length 15 [2025-04-13 17:59:28,451 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:28,451 INFO L485 AbstractCegarLoop]: Abstraction has 220 states and 712 transitions. [2025-04-13 17:59:28,451 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:28,451 INFO L278 IsEmpty]: Start isEmpty. Operand 220 states and 712 transitions. [2025-04-13 17:59:28,451 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:28,451 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:28,451 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:28,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-04-13 17:59:28,652 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-04-13 17:59:28,652 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:28,652 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1290571062, now seen corresponding path program 25 times [2025-04-13 17:59:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:28,652 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408179881] [2025-04-13 17:59:28,652 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:28,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:28,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:28,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:28,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:28,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:28,687 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408179881] [2025-04-13 17:59:28,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408179881] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:28,687 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885734832] [2025-04-13 17:59:28,687 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:28,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:28,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:28,689 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:28,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-04-13 17:59:28,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:28,730 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:28,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:28,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:28,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:28,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:28,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:28,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885734832] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:28,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2025-04-13 17:59:28,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415182323] [2025-04-13 17:59:28,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:28,779 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:28,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:28,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:28,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:28,779 INFO L87 Difference]: Start difference. First operand 220 states and 712 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:28,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:28,896 INFO L93 Difference]: Finished difference Result 250 states and 792 transitions. [2025-04-13 17:59:28,896 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:59:28,896 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:28,896 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:28,897 INFO L225 Difference]: With dead ends: 250 [2025-04-13 17:59:28,897 INFO L226 Difference]: Without dead ends: 241 [2025-04-13 17:59:28,897 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:28,899 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:28,899 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:28,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2025-04-13 17:59:28,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 210. [2025-04-13 17:59:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.210526315789474) internal successors, (671), 209 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:28,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 671 transitions. [2025-04-13 17:59:28,921 INFO L79 Accepts]: Start accepts. Automaton has 210 states and 671 transitions. Word has length 15 [2025-04-13 17:59:28,921 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:28,921 INFO L485 AbstractCegarLoop]: Abstraction has 210 states and 671 transitions. [2025-04-13 17:59:28,921 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:28,921 INFO L278 IsEmpty]: Start isEmpty. Operand 210 states and 671 transitions. [2025-04-13 17:59:28,921 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:28,921 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:28,921 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:28,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:29,122 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-04-13 17:59:29,122 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:29,123 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:29,123 INFO L85 PathProgramCache]: Analyzing trace with hash 420042246, now seen corresponding path program 26 times [2025-04-13 17:59:29,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:29,123 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443966811] [2025-04-13 17:59:29,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:29,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:29,125 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:29,128 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:29,128 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:29,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:29,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:29,171 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443966811] [2025-04-13 17:59:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443966811] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:29,171 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071038290] [2025-04-13 17:59:29,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:29,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:29,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:29,173 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:29,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-04-13 17:59:29,207 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:29,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:29,221 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:29,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:29,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:29,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:29,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:29,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071038290] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:29,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:29,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-04-13 17:59:29,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400204454] [2025-04-13 17:59:29,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:29,283 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:29,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:29,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:29,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:29,283 INFO L87 Difference]: Start difference. First operand 210 states and 671 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:29,414 INFO L93 Difference]: Finished difference Result 260 states and 807 transitions. [2025-04-13 17:59:29,414 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 17:59:29,414 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:29,414 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:29,415 INFO L225 Difference]: With dead ends: 260 [2025-04-13 17:59:29,415 INFO L226 Difference]: Without dead ends: 249 [2025-04-13 17:59:29,416 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-04-13 17:59:29,416 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:29,416 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:29,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2025-04-13 17:59:29,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 210. [2025-04-13 17:59:29,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.200956937799043) internal successors, (669), 209 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 669 transitions. [2025-04-13 17:59:29,438 INFO L79 Accepts]: Start accepts. Automaton has 210 states and 669 transitions. Word has length 15 [2025-04-13 17:59:29,439 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:29,439 INFO L485 AbstractCegarLoop]: Abstraction has 210 states and 669 transitions. [2025-04-13 17:59:29,439 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:29,439 INFO L278 IsEmpty]: Start isEmpty. Operand 210 states and 669 transitions. [2025-04-13 17:59:29,440 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:29,440 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:29,440 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:29,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-04-13 17:59:29,644 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-04-13 17:59:29,644 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:29,644 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash -357107353, now seen corresponding path program 27 times [2025-04-13 17:59:29,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:29,644 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553384230] [2025-04-13 17:59:29,644 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:29,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:29,647 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:29,650 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:29,650 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:29,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:29,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:29,687 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553384230] [2025-04-13 17:59:29,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553384230] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:29,687 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168267099] [2025-04-13 17:59:29,687 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:29,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:29,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:29,688 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:29,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-04-13 17:59:29,716 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:29,726 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:29,726 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:29,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:29,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:29,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:29,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:29,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168267099] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:29,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:29,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-04-13 17:59:29,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850863243] [2025-04-13 17:59:29,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:29,785 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:29,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:29,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:29,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:29,786 INFO L87 Difference]: Start difference. First operand 210 states and 669 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:29,980 INFO L93 Difference]: Finished difference Result 251 states and 756 transitions. [2025-04-13 17:59:29,980 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 17:59:29,980 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:29,981 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:29,982 INFO L225 Difference]: With dead ends: 251 [2025-04-13 17:59:29,982 INFO L226 Difference]: Without dead ends: 243 [2025-04-13 17:59:29,982 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:59:29,982 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:29,982 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-04-13 17:59:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 210. [2025-04-13 17:59:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.1818181818181817) internal successors, (665), 209 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 665 transitions. [2025-04-13 17:59:30,005 INFO L79 Accepts]: Start accepts. Automaton has 210 states and 665 transitions. Word has length 15 [2025-04-13 17:59:30,006 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:30,006 INFO L485 AbstractCegarLoop]: Abstraction has 210 states and 665 transitions. [2025-04-13 17:59:30,006 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:30,006 INFO L278 IsEmpty]: Start isEmpty. Operand 210 states and 665 transitions. [2025-04-13 17:59:30,006 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:30,006 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:30,006 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:30,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-04-13 17:59:30,206 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-04-13 17:59:30,207 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:30,208 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:30,208 INFO L85 PathProgramCache]: Analyzing trace with hash -104686595, now seen corresponding path program 28 times [2025-04-13 17:59:30,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:30,208 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164782968] [2025-04-13 17:59:30,208 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:30,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:30,211 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:30,213 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:30,213 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:30,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:30,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:30,244 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164782968] [2025-04-13 17:59:30,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164782968] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:30,244 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203036544] [2025-04-13 17:59:30,244 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:30,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:30,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:30,246 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:30,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-04-13 17:59:30,277 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:30,289 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:30,289 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:30,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:30,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:30,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:30,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:30,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203036544] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:30,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:30,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-04-13 17:59:30,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669293074] [2025-04-13 17:59:30,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:30,326 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 17:59:30,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:30,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 17:59:30,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:30,327 INFO L87 Difference]: Start difference. First operand 210 states and 665 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:30,471 INFO L93 Difference]: Finished difference Result 256 states and 788 transitions. [2025-04-13 17:59:30,472 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 17:59:30,472 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:30,472 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:30,473 INFO L225 Difference]: With dead ends: 256 [2025-04-13 17:59:30,473 INFO L226 Difference]: Without dead ends: 245 [2025-04-13 17:59:30,473 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:30,473 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:30,473 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:30,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2025-04-13 17:59:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 216. [2025-04-13 17:59:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.2) internal successors, (688), 215 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 688 transitions. [2025-04-13 17:59:30,498 INFO L79 Accepts]: Start accepts. Automaton has 216 states and 688 transitions. Word has length 15 [2025-04-13 17:59:30,498 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:30,498 INFO L485 AbstractCegarLoop]: Abstraction has 216 states and 688 transitions. [2025-04-13 17:59:30,499 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:30,499 INFO L278 IsEmpty]: Start isEmpty. Operand 216 states and 688 transitions. [2025-04-13 17:59:30,499 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:30,499 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:30,499 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:30,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:30,699 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:30,700 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:30,700 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:30,700 INFO L85 PathProgramCache]: Analyzing trace with hash 668300482, now seen corresponding path program 29 times [2025-04-13 17:59:30,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:30,700 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412157065] [2025-04-13 17:59:30,700 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:30,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:30,702 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:30,705 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:30,705 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:30,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:30,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:30,737 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412157065] [2025-04-13 17:59:30,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412157065] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:30,737 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98040087] [2025-04-13 17:59:30,737 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:30,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:30,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:30,738 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:30,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-04-13 17:59:30,769 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:30,779 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:30,779 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:30,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:30,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:30,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:30,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:30,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98040087] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:30,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:30,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2025-04-13 17:59:30,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927434598] [2025-04-13 17:59:30,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:30,820 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 17:59:30,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:30,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 17:59:30,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-04-13 17:59:30,821 INFO L87 Difference]: Start difference. First operand 216 states and 688 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:30,967 INFO L93 Difference]: Finished difference Result 312 states and 976 transitions. [2025-04-13 17:59:30,967 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 17:59:30,967 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 17:59:30,967 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:30,969 INFO L225 Difference]: With dead ends: 312 [2025-04-13 17:59:30,969 INFO L226 Difference]: Without dead ends: 305 [2025-04-13 17:59:30,969 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:59:30,969 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:30,970 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2025-04-13 17:59:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 226. [2025-04-13 17:59:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 3.2488888888888887) internal successors, (731), 225 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 731 transitions. [2025-04-13 17:59:30,999 INFO L79 Accepts]: Start accepts. Automaton has 226 states and 731 transitions. Word has length 15 [2025-04-13 17:59:30,999 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:30,999 INFO L485 AbstractCegarLoop]: Abstraction has 226 states and 731 transitions. [2025-04-13 17:59:30,999 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:30,999 INFO L278 IsEmpty]: Start isEmpty. Operand 226 states and 731 transitions. [2025-04-13 17:59:30,999 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:30,999 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:30,999 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:31,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:31,200 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-04-13 17:59:31,200 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:31,200 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1825800864, now seen corresponding path program 30 times [2025-04-13 17:59:31,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:31,200 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835710485] [2025-04-13 17:59:31,200 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:31,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:31,203 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:31,206 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:31,206 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:31,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:31,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:31,238 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835710485] [2025-04-13 17:59:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835710485] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:31,238 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807115326] [2025-04-13 17:59:31,238 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:31,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:31,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:31,240 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:31,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-04-13 17:59:31,269 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:31,279 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:31,279 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:31,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:31,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:31,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:31,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:31,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807115326] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:31,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:31,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-04-13 17:59:31,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735815161] [2025-04-13 17:59:31,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:31,320 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 17:59:31,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:31,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 17:59:31,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:59:31,321 INFO L87 Difference]: Start difference. First operand 226 states and 731 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:31,446 INFO L93 Difference]: Finished difference Result 297 states and 942 transitions. [2025-04-13 17:59:31,446 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 17:59:31,446 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:31,446 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:31,448 INFO L225 Difference]: With dead ends: 297 [2025-04-13 17:59:31,448 INFO L226 Difference]: Without dead ends: 288 [2025-04-13 17:59:31,448 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:31,448 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:31,448 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2025-04-13 17:59:31,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 220. [2025-04-13 17:59:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.2146118721461185) internal successors, (704), 219 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 704 transitions. [2025-04-13 17:59:31,473 INFO L79 Accepts]: Start accepts. Automaton has 220 states and 704 transitions. Word has length 15 [2025-04-13 17:59:31,473 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:31,473 INFO L485 AbstractCegarLoop]: Abstraction has 220 states and 704 transitions. [2025-04-13 17:59:31,473 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:31,473 INFO L278 IsEmpty]: Start isEmpty. Operand 220 states and 704 transitions. [2025-04-13 17:59:31,474 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:31,474 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:31,474 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:31,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:31,674 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:31,674 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:31,674 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash -964155771, now seen corresponding path program 31 times [2025-04-13 17:59:31,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:31,675 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21616649] [2025-04-13 17:59:31,675 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:31,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:31,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:31,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:31,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:31,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:31,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:31,708 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21616649] [2025-04-13 17:59:31,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21616649] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:31,708 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068159511] [2025-04-13 17:59:31,708 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:31,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:31,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:31,710 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:31,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-04-13 17:59:31,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:31,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:31,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:31,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:31,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:31,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:31,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:31,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068159511] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:31,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:31,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-04-13 17:59:31,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465597539] [2025-04-13 17:59:31,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:31,801 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 17:59:31,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:31,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 17:59:31,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:59:31,801 INFO L87 Difference]: Start difference. First operand 220 states and 704 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:31,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:31,986 INFO L93 Difference]: Finished difference Result 263 states and 808 transitions. [2025-04-13 17:59:31,986 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 17:59:31,987 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:31,987 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:31,988 INFO L225 Difference]: With dead ends: 263 [2025-04-13 17:59:31,988 INFO L226 Difference]: Without dead ends: 255 [2025-04-13 17:59:31,988 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:59:31,989 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:31,989 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-04-13 17:59:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 216. [2025-04-13 17:59:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.181395348837209) internal successors, (684), 215 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:32,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 684 transitions. [2025-04-13 17:59:32,014 INFO L79 Accepts]: Start accepts. Automaton has 216 states and 684 transitions. Word has length 15 [2025-04-13 17:59:32,014 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:32,014 INFO L485 AbstractCegarLoop]: Abstraction has 216 states and 684 transitions. [2025-04-13 17:59:32,014 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:32,014 INFO L278 IsEmpty]: Start isEmpty. Operand 216 states and 684 transitions. [2025-04-13 17:59:32,014 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:32,014 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:32,014 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:32,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-04-13 17:59:32,215 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-04-13 17:59:32,215 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:32,215 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:32,215 INFO L85 PathProgramCache]: Analyzing trace with hash -115187556, now seen corresponding path program 32 times [2025-04-13 17:59:32,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:32,216 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726867785] [2025-04-13 17:59:32,216 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:32,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:32,218 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:32,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:32,221 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:32,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:32,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:32,255 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726867785] [2025-04-13 17:59:32,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726867785] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:32,256 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93056227] [2025-04-13 17:59:32,256 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:32,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:32,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:32,257 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:32,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-04-13 17:59:32,287 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:32,299 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:32,299 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:32,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:32,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:32,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:32,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93056227] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:32,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:32,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 17:59:32,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329958035] [2025-04-13 17:59:32,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:32,342 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:32,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:32,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:32,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:32,343 INFO L87 Difference]: Start difference. First operand 216 states and 684 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:32,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:32,452 INFO L93 Difference]: Finished difference Result 265 states and 810 transitions. [2025-04-13 17:59:32,452 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:59:32,452 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:32,452 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:32,453 INFO L225 Difference]: With dead ends: 265 [2025-04-13 17:59:32,453 INFO L226 Difference]: Without dead ends: 254 [2025-04-13 17:59:32,453 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:32,454 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:32,454 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:32,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2025-04-13 17:59:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 216. [2025-04-13 17:59:32,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.172093023255814) internal successors, (682), 215 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:32,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 682 transitions. [2025-04-13 17:59:32,477 INFO L79 Accepts]: Start accepts. Automaton has 216 states and 682 transitions. Word has length 15 [2025-04-13 17:59:32,478 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:32,478 INFO L485 AbstractCegarLoop]: Abstraction has 216 states and 682 transitions. [2025-04-13 17:59:32,478 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:32,478 INFO L278 IsEmpty]: Start isEmpty. Operand 216 states and 682 transitions. [2025-04-13 17:59:32,478 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:32,478 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:32,478 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:32,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-04-13 17:59:32,678 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-04-13 17:59:32,679 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:32,679 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:32,679 INFO L85 PathProgramCache]: Analyzing trace with hash -892337155, now seen corresponding path program 33 times [2025-04-13 17:59:32,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:32,679 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899674565] [2025-04-13 17:59:32,679 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:32,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:32,682 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:32,684 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:32,685 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:32,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:32,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:32,719 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899674565] [2025-04-13 17:59:32,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899674565] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:32,719 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566341257] [2025-04-13 17:59:32,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:32,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:32,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:32,721 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:32,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-04-13 17:59:32,749 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:32,759 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:32,759 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:32,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:32,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:32,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:32,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:32,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566341257] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:32,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:32,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 17:59:32,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557043854] [2025-04-13 17:59:32,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:32,818 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:32,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:32,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:32,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:32,819 INFO L87 Difference]: Start difference. First operand 216 states and 682 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:32,957 INFO L93 Difference]: Finished difference Result 252 states and 763 transitions. [2025-04-13 17:59:32,957 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 17:59:32,957 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:32,957 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:32,958 INFO L225 Difference]: With dead ends: 252 [2025-04-13 17:59:32,958 INFO L226 Difference]: Without dead ends: 247 [2025-04-13 17:59:32,959 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:32,959 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:32,959 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:32,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2025-04-13 17:59:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 214. [2025-04-13 17:59:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.1690140845070425) internal successors, (675), 213 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 675 transitions. [2025-04-13 17:59:32,988 INFO L79 Accepts]: Start accepts. Automaton has 214 states and 675 transitions. Word has length 15 [2025-04-13 17:59:32,989 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:32,989 INFO L485 AbstractCegarLoop]: Abstraction has 214 states and 675 transitions. [2025-04-13 17:59:32,989 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:32,989 INFO L278 IsEmpty]: Start isEmpty. Operand 214 states and 675 transitions. [2025-04-13 17:59:32,989 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:32,989 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:32,989 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:32,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-04-13 17:59:33,190 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-04-13 17:59:33,190 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:33,190 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:33,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1431344860, now seen corresponding path program 34 times [2025-04-13 17:59:33,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:33,190 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811479200] [2025-04-13 17:59:33,190 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:33,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:33,193 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:33,195 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:33,195 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:33,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:33,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:33,219 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811479200] [2025-04-13 17:59:33,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811479200] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:33,219 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827839895] [2025-04-13 17:59:33,219 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:33,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:33,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:33,221 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:33,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-04-13 17:59:33,248 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:33,260 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:33,260 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:33,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:33,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:33,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:33,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:33,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827839895] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:33,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:33,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2025-04-13 17:59:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135970276] [2025-04-13 17:59:33,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:33,292 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 17:59:33,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:33,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 17:59:33,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-04-13 17:59:33,292 INFO L87 Difference]: Start difference. First operand 214 states and 675 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:33,365 INFO L93 Difference]: Finished difference Result 253 states and 766 transitions. [2025-04-13 17:59:33,366 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:33,366 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:33,366 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:33,367 INFO L225 Difference]: With dead ends: 253 [2025-04-13 17:59:33,367 INFO L226 Difference]: Without dead ends: 240 [2025-04-13 17:59:33,367 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-04-13 17:59:33,367 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:33,367 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:59:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-04-13 17:59:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 212. [2025-04-13 17:59:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.175355450236967) internal successors, (670), 211 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 670 transitions. [2025-04-13 17:59:33,391 INFO L79 Accepts]: Start accepts. Automaton has 212 states and 670 transitions. Word has length 15 [2025-04-13 17:59:33,391 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:33,391 INFO L485 AbstractCegarLoop]: Abstraction has 212 states and 670 transitions. [2025-04-13 17:59:33,391 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:33,391 INFO L278 IsEmpty]: Start isEmpty. Operand 212 states and 670 transitions. [2025-04-13 17:59:33,392 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:33,392 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:33,392 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:33,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-04-13 17:59:33,592 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-04-13 17:59:33,592 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:33,592 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:33,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1030309385, now seen corresponding path program 35 times [2025-04-13 17:59:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:33,593 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109541286] [2025-04-13 17:59:33,593 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:33,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:33,595 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:33,597 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:33,597 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:33,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:33,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:33,622 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109541286] [2025-04-13 17:59:33,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109541286] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:33,622 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214568658] [2025-04-13 17:59:33,622 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:33,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:33,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:33,624 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:33,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-04-13 17:59:33,651 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:33,661 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:33,662 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:33,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:33,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 17:59:33,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:33,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:33,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214568658] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:33,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:33,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2025-04-13 17:59:33,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444004213] [2025-04-13 17:59:33,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:33,691 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 17:59:33,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:33,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 17:59:33,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-04-13 17:59:33,692 INFO L87 Difference]: Start difference. First operand 212 states and 670 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:33,807 INFO L93 Difference]: Finished difference Result 270 states and 816 transitions. [2025-04-13 17:59:33,807 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:59:33,807 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 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 15 [2025-04-13 17:59:33,807 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:33,808 INFO L225 Difference]: With dead ends: 270 [2025-04-13 17:59:33,808 INFO L226 Difference]: Without dead ends: 262 [2025-04-13 17:59:33,809 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:59:33,809 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:33,809 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-04-13 17:59:33,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 214. [2025-04-13 17:59:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.1784037558685445) internal successors, (677), 213 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 677 transitions. [2025-04-13 17:59:33,834 INFO L79 Accepts]: Start accepts. Automaton has 214 states and 677 transitions. Word has length 15 [2025-04-13 17:59:33,834 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:33,834 INFO L485 AbstractCegarLoop]: Abstraction has 214 states and 677 transitions. [2025-04-13 17:59:33,834 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:33,834 INFO L278 IsEmpty]: Start isEmpty. Operand 214 states and 677 transitions. [2025-04-13 17:59:33,835 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:33,835 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:33,835 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:33,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2025-04-13 17:59:34,035 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-04-13 17:59:34,035 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:34,035 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash 971599418, now seen corresponding path program 36 times [2025-04-13 17:59:34,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:34,036 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756249614] [2025-04-13 17:59:34,036 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:34,038 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:34,042 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:34,042 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:34,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:34,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:34,169 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756249614] [2025-04-13 17:59:34,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756249614] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:34,169 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397816457] [2025-04-13 17:59:34,169 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:34,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:34,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:34,171 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:34,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-04-13 17:59:34,198 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:34,210 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:34,210 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:34,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:34,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:34,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:34,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:34,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397816457] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:34,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:34,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 17:59:34,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339360663] [2025-04-13 17:59:34,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:34,418 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:34,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:34,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:34,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:34,419 INFO L87 Difference]: Start difference. First operand 214 states and 677 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:34,694 INFO L93 Difference]: Finished difference Result 276 states and 793 transitions. [2025-04-13 17:59:34,694 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 17:59:34,694 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:34,694 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:34,695 INFO L225 Difference]: With dead ends: 276 [2025-04-13 17:59:34,695 INFO L226 Difference]: Without dead ends: 261 [2025-04-13 17:59:34,696 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:59:34,696 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:34,696 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:59:34,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2025-04-13 17:59:34,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 237. [2025-04-13 17:59:34,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 3.093220338983051) internal successors, (730), 236 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 730 transitions. [2025-04-13 17:59:34,724 INFO L79 Accepts]: Start accepts. Automaton has 237 states and 730 transitions. Word has length 16 [2025-04-13 17:59:34,724 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:34,724 INFO L485 AbstractCegarLoop]: Abstraction has 237 states and 730 transitions. [2025-04-13 17:59:34,724 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:34,725 INFO L278 IsEmpty]: Start isEmpty. Operand 237 states and 730 transitions. [2025-04-13 17:59:34,725 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:34,725 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:34,725 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:34,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2025-04-13 17:59:34,925 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-04-13 17:59:34,926 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:34,926 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:34,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1207045196, now seen corresponding path program 37 times [2025-04-13 17:59:34,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:34,926 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288671112] [2025-04-13 17:59:34,926 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:34,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:34,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 17:59:34,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:34,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:34,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:35,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:35,065 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288671112] [2025-04-13 17:59:35,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288671112] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:35,065 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262761598] [2025-04-13 17:59:35,065 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:35,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:35,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:35,067 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:35,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-04-13 17:59:35,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 17:59:35,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:35,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:35,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:35,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:35,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:35,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:35,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262761598] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:35,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:35,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-04-13 17:59:35,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101559163] [2025-04-13 17:59:35,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:35,283 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 17:59:35,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:35,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 17:59:35,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2025-04-13 17:59:35,283 INFO L87 Difference]: Start difference. First operand 237 states and 730 transitions. Second operand has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:35,534 INFO L93 Difference]: Finished difference Result 287 states and 818 transitions. [2025-04-13 17:59:35,534 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:59:35,534 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:35,534 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:35,536 INFO L225 Difference]: With dead ends: 287 [2025-04-13 17:59:35,536 INFO L226 Difference]: Without dead ends: 282 [2025-04-13 17:59:35,536 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:59:35,536 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:35,536 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:59:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2025-04-13 17:59:35,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 245. [2025-04-13 17:59:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 3.1147540983606556) internal successors, (760), 244 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 760 transitions. [2025-04-13 17:59:35,569 INFO L79 Accepts]: Start accepts. Automaton has 245 states and 760 transitions. Word has length 16 [2025-04-13 17:59:35,569 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:35,569 INFO L485 AbstractCegarLoop]: Abstraction has 245 states and 760 transitions. [2025-04-13 17:59:35,569 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:35,569 INFO L278 IsEmpty]: Start isEmpty. Operand 245 states and 760 transitions. [2025-04-13 17:59:35,569 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:35,569 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:35,569 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:35,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:35,771 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2025-04-13 17:59:35,772 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:35,772 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2066514372, now seen corresponding path program 38 times [2025-04-13 17:59:35,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:35,772 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855527320] [2025-04-13 17:59:35,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:35,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:35,775 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:35,792 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:35,792 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:35,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:35,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:35,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:35,937 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855527320] [2025-04-13 17:59:35,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855527320] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:35,937 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134700295] [2025-04-13 17:59:35,937 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:35,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:35,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:35,939 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:35,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-04-13 17:59:35,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:35,979 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:35,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:35,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:35,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:35,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:36,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:36,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134700295] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:36,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:36,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-04-13 17:59:36,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648441693] [2025-04-13 17:59:36,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:36,182 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:59:36,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:36,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:59:36,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:36,183 INFO L87 Difference]: Start difference. First operand 245 states and 760 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:36,418 INFO L93 Difference]: Finished difference Result 290 states and 833 transitions. [2025-04-13 17:59:36,418 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:59:36,418 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:36,418 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:36,419 INFO L225 Difference]: With dead ends: 290 [2025-04-13 17:59:36,419 INFO L226 Difference]: Without dead ends: 285 [2025-04-13 17:59:36,419 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:59:36,420 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:36,420 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:59:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2025-04-13 17:59:36,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 249. [2025-04-13 17:59:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 3.1370967741935485) internal successors, (778), 248 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 778 transitions. [2025-04-13 17:59:36,451 INFO L79 Accepts]: Start accepts. Automaton has 249 states and 778 transitions. Word has length 16 [2025-04-13 17:59:36,451 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:36,451 INFO L485 AbstractCegarLoop]: Abstraction has 249 states and 778 transitions. [2025-04-13 17:59:36,452 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:36,452 INFO L278 IsEmpty]: Start isEmpty. Operand 249 states and 778 transitions. [2025-04-13 17:59:36,452 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:36,452 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:36,452 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:36,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2025-04-13 17:59:36,653 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:36,653 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:36,653 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:36,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1983397482, now seen corresponding path program 39 times [2025-04-13 17:59:36,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:36,653 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819828071] [2025-04-13 17:59:36,653 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:36,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:36,656 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:36,660 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:36,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:36,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:36,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:36,778 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819828071] [2025-04-13 17:59:36,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819828071] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:36,778 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494911014] [2025-04-13 17:59:36,778 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:36,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:36,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:36,780 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:36,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-04-13 17:59:36,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:36,821 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:36,822 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:36,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:36,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:36,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:36,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:37,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494911014] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:37,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:37,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-04-13 17:59:37,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611523456] [2025-04-13 17:59:37,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:37,015 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:59:37,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:37,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:59:37,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:37,016 INFO L87 Difference]: Start difference. First operand 249 states and 778 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:37,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:37,244 INFO L93 Difference]: Finished difference Result 281 states and 821 transitions. [2025-04-13 17:59:37,244 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:59:37,244 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:37,245 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:37,246 INFO L225 Difference]: With dead ends: 281 [2025-04-13 17:59:37,246 INFO L226 Difference]: Without dead ends: 270 [2025-04-13 17:59:37,246 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:59:37,246 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:37,246 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2025-04-13 17:59:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 247. [2025-04-13 17:59:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 3.1178861788617884) internal successors, (767), 246 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 767 transitions. [2025-04-13 17:59:37,277 INFO L79 Accepts]: Start accepts. Automaton has 247 states and 767 transitions. Word has length 16 [2025-04-13 17:59:37,277 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:37,277 INFO L485 AbstractCegarLoop]: Abstraction has 247 states and 767 transitions. [2025-04-13 17:59:37,277 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:37,277 INFO L278 IsEmpty]: Start isEmpty. Operand 247 states and 767 transitions. [2025-04-13 17:59:37,278 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:37,278 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:37,278 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:37,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2025-04-13 17:59:37,478 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2025-04-13 17:59:37,478 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:37,479 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1000340388, now seen corresponding path program 40 times [2025-04-13 17:59:37,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:37,479 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832716696] [2025-04-13 17:59:37,479 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:37,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:37,481 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:37,484 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:37,484 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:37,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:37,598 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832716696] [2025-04-13 17:59:37,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832716696] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:37,598 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162708971] [2025-04-13 17:59:37,598 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:37,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:37,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:37,600 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:37,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-04-13 17:59:37,629 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:37,640 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:37,640 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:37,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:37,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:37,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:37,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:37,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162708971] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:37,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:37,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2025-04-13 17:59:37,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845006681] [2025-04-13 17:59:37,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:37,820 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 17:59:37,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:37,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 17:59:37,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:59:37,821 INFO L87 Difference]: Start difference. First operand 247 states and 767 transitions. Second operand has 16 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:37,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:37,989 INFO L93 Difference]: Finished difference Result 295 states and 874 transitions. [2025-04-13 17:59:37,989 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 17:59:37,989 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:37,989 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:37,990 INFO L225 Difference]: With dead ends: 295 [2025-04-13 17:59:37,990 INFO L226 Difference]: Without dead ends: 290 [2025-04-13 17:59:37,991 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:59:37,991 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:37,991 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:37,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2025-04-13 17:59:38,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 262. [2025-04-13 17:59:38,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.1494252873563218) internal successors, (822), 261 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 822 transitions. [2025-04-13 17:59:38,024 INFO L79 Accepts]: Start accepts. Automaton has 262 states and 822 transitions. Word has length 16 [2025-04-13 17:59:38,024 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:38,024 INFO L485 AbstractCegarLoop]: Abstraction has 262 states and 822 transitions. [2025-04-13 17:59:38,024 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:38,024 INFO L278 IsEmpty]: Start isEmpty. Operand 262 states and 822 transitions. [2025-04-13 17:59:38,024 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:38,024 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:38,025 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:38,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:38,225 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:38,225 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:38,225 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:38,225 INFO L85 PathProgramCache]: Analyzing trace with hash -917223498, now seen corresponding path program 41 times [2025-04-13 17:59:38,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:38,225 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651486976] [2025-04-13 17:59:38,225 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:38,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:38,228 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:59:38,232 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:38,232 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:59:38,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:38,345 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651486976] [2025-04-13 17:59:38,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651486976] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:38,345 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065778360] [2025-04-13 17:59:38,345 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:38,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:38,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:38,347 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:38,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-04-13 17:59:38,380 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:59:38,394 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:38,394 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:59:38,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:38,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:38,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:38,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:38,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:38,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065778360] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:38,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:38,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 17 [2025-04-13 17:59:38,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122969823] [2025-04-13 17:59:38,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:38,591 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:59:38,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:38,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:59:38,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:38,591 INFO L87 Difference]: Start difference. First operand 262 states and 822 transitions. Second operand has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:38,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:38,780 INFO L93 Difference]: Finished difference Result 297 states and 873 transitions. [2025-04-13 17:59:38,780 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 17:59:38,780 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:38,780 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:38,782 INFO L225 Difference]: With dead ends: 297 [2025-04-13 17:59:38,782 INFO L226 Difference]: Without dead ends: 290 [2025-04-13 17:59:38,782 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:59:38,782 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:38,782 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2025-04-13 17:59:38,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 262. [2025-04-13 17:59:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.1340996168582373) internal successors, (818), 261 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:38,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 818 transitions. [2025-04-13 17:59:38,814 INFO L79 Accepts]: Start accepts. Automaton has 262 states and 818 transitions. Word has length 16 [2025-04-13 17:59:38,814 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:38,815 INFO L485 AbstractCegarLoop]: Abstraction has 262 states and 818 transitions. [2025-04-13 17:59:38,815 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:38,815 INFO L278 IsEmpty]: Start isEmpty. Operand 262 states and 818 transitions. [2025-04-13 17:59:38,815 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:38,815 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:38,815 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:38,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:39,015 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:39,016 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:39,016 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:39,016 INFO L85 PathProgramCache]: Analyzing trace with hash 800525562, now seen corresponding path program 42 times [2025-04-13 17:59:39,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:39,016 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364069848] [2025-04-13 17:59:39,016 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:39,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:39,019 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:39,022 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:39,022 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:39,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:39,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:39,123 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364069848] [2025-04-13 17:59:39,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364069848] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:39,123 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029733791] [2025-04-13 17:59:39,123 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:39,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:39,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:39,125 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:39,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-04-13 17:59:39,156 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:39,168 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:39,168 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:39,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:39,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:39,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:39,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:39,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029733791] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:39,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:39,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2025-04-13 17:59:39,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41155999] [2025-04-13 17:59:39,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:39,345 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 17:59:39,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:39,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 17:59:39,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:59:39,345 INFO L87 Difference]: Start difference. First operand 262 states and 818 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:39,544 INFO L93 Difference]: Finished difference Result 285 states and 852 transitions. [2025-04-13 17:59:39,544 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 17:59:39,544 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:39,545 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:39,546 INFO L225 Difference]: With dead ends: 285 [2025-04-13 17:59:39,546 INFO L226 Difference]: Without dead ends: 280 [2025-04-13 17:59:39,546 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:59:39,546 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:39,546 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:39,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2025-04-13 17:59:39,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 262. [2025-04-13 17:59:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.1340996168582373) internal successors, (818), 261 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 818 transitions. [2025-04-13 17:59:39,578 INFO L79 Accepts]: Start accepts. Automaton has 262 states and 818 transitions. Word has length 16 [2025-04-13 17:59:39,579 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:39,579 INFO L485 AbstractCegarLoop]: Abstraction has 262 states and 818 transitions. [2025-04-13 17:59:39,579 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:39,579 INFO L278 IsEmpty]: Start isEmpty. Operand 262 states and 818 transitions. [2025-04-13 17:59:39,579 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:39,579 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:39,579 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:39,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2025-04-13 17:59:39,779 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2025-04-13 17:59:39,780 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:39,780 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1954276236, now seen corresponding path program 43 times [2025-04-13 17:59:39,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:39,780 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807225178] [2025-04-13 17:59:39,780 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:39,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:39,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 17:59:39,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:39,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:39,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:39,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:39,886 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807225178] [2025-04-13 17:59:39,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807225178] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:39,886 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072291218] [2025-04-13 17:59:39,886 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:39,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:39,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:39,888 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:39,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-04-13 17:59:39,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 17:59:39,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:39,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:39,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:39,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:39,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:39,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072291218] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:40,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:40,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2025-04-13 17:59:40,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944542099] [2025-04-13 17:59:40,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:40,084 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:40,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:40,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:40,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:40,084 INFO L87 Difference]: Start difference. First operand 262 states and 818 transitions. Second operand has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:40,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:40,320 INFO L93 Difference]: Finished difference Result 322 states and 930 transitions. [2025-04-13 17:59:40,320 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:59:40,320 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:40,320 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:40,321 INFO L225 Difference]: With dead ends: 322 [2025-04-13 17:59:40,321 INFO L226 Difference]: Without dead ends: 310 [2025-04-13 17:59:40,321 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:40,322 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:40,322 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2025-04-13 17:59:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 270. [2025-04-13 17:59:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 3.1449814126394053) internal successors, (846), 269 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 846 transitions. [2025-04-13 17:59:40,357 INFO L79 Accepts]: Start accepts. Automaton has 270 states and 846 transitions. Word has length 16 [2025-04-13 17:59:40,357 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:40,357 INFO L485 AbstractCegarLoop]: Abstraction has 270 states and 846 transitions. [2025-04-13 17:59:40,357 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:40,357 INFO L278 IsEmpty]: Start isEmpty. Operand 270 states and 846 transitions. [2025-04-13 17:59:40,358 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:40,358 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:40,358 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:40,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2025-04-13 17:59:40,558 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-04-13 17:59:40,558 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:40,558 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:40,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1481221884, now seen corresponding path program 44 times [2025-04-13 17:59:40,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:40,559 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236604178] [2025-04-13 17:59:40,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:40,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:40,561 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:40,566 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:40,566 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:40,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:40,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:40,663 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236604178] [2025-04-13 17:59:40,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236604178] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:40,663 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236057735] [2025-04-13 17:59:40,663 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:40,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:40,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:40,665 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:40,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-04-13 17:59:40,694 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:40,706 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:40,706 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:40,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:40,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:40,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:40,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:40,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236057735] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:40,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:40,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2025-04-13 17:59:40,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381628525] [2025-04-13 17:59:40,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:40,893 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:59:40,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:40,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:59:40,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:59:40,894 INFO L87 Difference]: Start difference. First operand 270 states and 846 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:41,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:41,130 INFO L93 Difference]: Finished difference Result 340 states and 979 transitions. [2025-04-13 17:59:41,130 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 17:59:41,130 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:41,130 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:41,132 INFO L225 Difference]: With dead ends: 340 [2025-04-13 17:59:41,132 INFO L226 Difference]: Without dead ends: 332 [2025-04-13 17:59:41,132 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:59:41,132 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:41,132 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:41,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2025-04-13 17:59:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 278. [2025-04-13 17:59:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 3.1768953068592056) internal successors, (880), 277 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 880 transitions. [2025-04-13 17:59:41,175 INFO L79 Accepts]: Start accepts. Automaton has 278 states and 880 transitions. Word has length 16 [2025-04-13 17:59:41,175 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:41,175 INFO L485 AbstractCegarLoop]: Abstraction has 278 states and 880 transitions. [2025-04-13 17:59:41,175 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:41,175 INFO L278 IsEmpty]: Start isEmpty. Operand 278 states and 880 transitions. [2025-04-13 17:59:41,175 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:41,175 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:41,175 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:41,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2025-04-13 17:59:41,376 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-04-13 17:59:41,376 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:41,376 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1564338774, now seen corresponding path program 45 times [2025-04-13 17:59:41,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:41,376 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226110549] [2025-04-13 17:59:41,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:41,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:41,379 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:59:41,383 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:41,383 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:59:41,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:41,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:41,479 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226110549] [2025-04-13 17:59:41,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226110549] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:41,479 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235580760] [2025-04-13 17:59:41,479 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:41,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:41,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:41,481 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:41,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2025-04-13 17:59:41,510 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:59:41,522 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:41,522 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:59:41,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:41,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:41,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:41,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:41,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235580760] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:41,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:41,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2025-04-13 17:59:41,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970579931] [2025-04-13 17:59:41,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:41,698 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:59:41,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:41,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:59:41,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:59:41,698 INFO L87 Difference]: Start difference. First operand 278 states and 880 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:41,962 INFO L93 Difference]: Finished difference Result 335 states and 967 transitions. [2025-04-13 17:59:41,963 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:59:41,963 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:41,963 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:41,964 INFO L225 Difference]: With dead ends: 335 [2025-04-13 17:59:41,964 INFO L226 Difference]: Without dead ends: 324 [2025-04-13 17:59:41,965 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:59:41,965 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:41,965 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:41,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2025-04-13 17:59:42,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 274. [2025-04-13 17:59:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 3.15018315018315) internal successors, (860), 273 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 860 transitions. [2025-04-13 17:59:42,001 INFO L79 Accepts]: Start accepts. Automaton has 274 states and 860 transitions. Word has length 16 [2025-04-13 17:59:42,001 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:42,001 INFO L485 AbstractCegarLoop]: Abstraction has 274 states and 860 transitions. [2025-04-13 17:59:42,001 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:42,002 INFO L278 IsEmpty]: Start isEmpty. Operand 274 states and 860 transitions. [2025-04-13 17:59:42,002 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:42,002 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:42,002 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:42,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:42,202 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-04-13 17:59:42,203 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:42,203 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1553040500, now seen corresponding path program 46 times [2025-04-13 17:59:42,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:42,203 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313118876] [2025-04-13 17:59:42,203 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:42,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:42,205 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:42,208 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:42,208 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:42,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:42,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:42,374 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313118876] [2025-04-13 17:59:42,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313118876] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:42,374 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177536674] [2025-04-13 17:59:42,374 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:42,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:42,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:42,376 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:42,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2025-04-13 17:59:42,408 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:42,426 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:42,426 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:42,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:42,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:42,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:42,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:42,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177536674] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:42,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:42,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2025-04-13 17:59:42,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646187479] [2025-04-13 17:59:42,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:42,624 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:42,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:42,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:42,625 INFO L87 Difference]: Start difference. First operand 274 states and 860 transitions. Second operand has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:42,787 INFO L93 Difference]: Finished difference Result 303 states and 905 transitions. [2025-04-13 17:59:42,787 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:59:42,787 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:42,788 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:42,789 INFO L225 Difference]: With dead ends: 303 [2025-04-13 17:59:42,789 INFO L226 Difference]: Without dead ends: 294 [2025-04-13 17:59:42,789 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:59:42,789 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:42,789 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:42,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2025-04-13 17:59:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 274. [2025-04-13 17:59:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 3.1355311355311355) internal successors, (856), 273 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 856 transitions. [2025-04-13 17:59:42,829 INFO L79 Accepts]: Start accepts. Automaton has 274 states and 856 transitions. Word has length 16 [2025-04-13 17:59:42,829 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:42,829 INFO L485 AbstractCegarLoop]: Abstraction has 274 states and 856 transitions. [2025-04-13 17:59:42,829 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:42,829 INFO L278 IsEmpty]: Start isEmpty. Operand 274 states and 856 transitions. [2025-04-13 17:59:42,830 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:42,830 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:42,830 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:42,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:43,033 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-04-13 17:59:43,034 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:43,034 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:43,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1986282044, now seen corresponding path program 47 times [2025-04-13 17:59:43,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:43,034 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509938070] [2025-04-13 17:59:43,034 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:43,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:43,037 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:59:43,041 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:43,042 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:59:43,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:43,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:43,157 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509938070] [2025-04-13 17:59:43,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509938070] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:43,157 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4368284] [2025-04-13 17:59:43,157 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:43,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:43,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:43,159 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:43,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2025-04-13 17:59:43,189 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:59:43,203 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:43,204 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:59:43,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:43,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:43,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:43,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:43,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4368284] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:43,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:43,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-04-13 17:59:43,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83342440] [2025-04-13 17:59:43,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:43,413 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:59:43,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:43,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:59:43,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:59:43,414 INFO L87 Difference]: Start difference. First operand 274 states and 856 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:43,631 INFO L93 Difference]: Finished difference Result 370 states and 1076 transitions. [2025-04-13 17:59:43,632 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:59:43,632 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:43,632 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:43,633 INFO L225 Difference]: With dead ends: 370 [2025-04-13 17:59:43,633 INFO L226 Difference]: Without dead ends: 365 [2025-04-13 17:59:43,633 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:59:43,634 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:43,634 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2025-04-13 17:59:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 306. [2025-04-13 17:59:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.2065573770491804) internal successors, (978), 305 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 978 transitions. [2025-04-13 17:59:43,674 INFO L79 Accepts]: Start accepts. Automaton has 306 states and 978 transitions. Word has length 16 [2025-04-13 17:59:43,674 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:43,674 INFO L485 AbstractCegarLoop]: Abstraction has 306 states and 978 transitions. [2025-04-13 17:59:43,674 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:43,674 INFO L278 IsEmpty]: Start isEmpty. Operand 306 states and 978 transitions. [2025-04-13 17:59:43,675 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:43,675 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:43,675 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:43,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2025-04-13 17:59:43,875 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:43,875 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:43,876 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:43,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2069398934, now seen corresponding path program 48 times [2025-04-13 17:59:43,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:43,876 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734743566] [2025-04-13 17:59:43,876 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:43,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:43,879 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:59:43,882 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:43,882 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:59:43,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:44,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:44,007 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734743566] [2025-04-13 17:59:44,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734743566] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:44,007 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370635077] [2025-04-13 17:59:44,007 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:44,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:44,009 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:44,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2025-04-13 17:59:44,039 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 3 equivalence classes. [2025-04-13 17:59:44,052 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:44,052 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:59:44,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:44,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:44,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:44,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:44,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370635077] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:44,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:44,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-04-13 17:59:44,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864318180] [2025-04-13 17:59:44,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:44,233 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:59:44,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:44,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:59:44,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:44,233 INFO L87 Difference]: Start difference. First operand 306 states and 978 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:44,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:44,428 INFO L93 Difference]: Finished difference Result 372 states and 1078 transitions. [2025-04-13 17:59:44,428 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 17:59:44,428 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:44,428 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:44,429 INFO L225 Difference]: With dead ends: 372 [2025-04-13 17:59:44,429 INFO L226 Difference]: Without dead ends: 367 [2025-04-13 17:59:44,430 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:59:44,430 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:44,430 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2025-04-13 17:59:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 302. [2025-04-13 17:59:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.1893687707641196) internal successors, (960), 301 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 960 transitions. [2025-04-13 17:59:44,470 INFO L79 Accepts]: Start accepts. Automaton has 302 states and 960 transitions. Word has length 16 [2025-04-13 17:59:44,471 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:44,471 INFO L485 AbstractCegarLoop]: Abstraction has 302 states and 960 transitions. [2025-04-13 17:59:44,471 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:44,471 INFO L278 IsEmpty]: Start isEmpty. Operand 302 states and 960 transitions. [2025-04-13 17:59:44,471 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:44,471 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:44,471 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:44,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2025-04-13 17:59:44,671 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:44,672 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:44,672 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:44,672 INFO L85 PathProgramCache]: Analyzing trace with hash -507819302, now seen corresponding path program 49 times [2025-04-13 17:59:44,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:44,672 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443796354] [2025-04-13 17:59:44,672 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:44,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:44,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 17:59:44,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:44,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:44,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:44,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:44,791 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443796354] [2025-04-13 17:59:44,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443796354] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:44,791 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262671585] [2025-04-13 17:59:44,791 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:44,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:44,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:44,793 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:44,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2025-04-13 17:59:44,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 17:59:44,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:44,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:44,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:44,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:44,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:44,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:45,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262671585] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:45,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:45,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-04-13 17:59:45,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979495282] [2025-04-13 17:59:45,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:45,000 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 17:59:45,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:45,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 17:59:45,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2025-04-13 17:59:45,001 INFO L87 Difference]: Start difference. First operand 302 states and 960 transitions. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:45,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:45,224 INFO L93 Difference]: Finished difference Result 367 states and 1058 transitions. [2025-04-13 17:59:45,224 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:59:45,224 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:45,225 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:45,226 INFO L225 Difference]: With dead ends: 367 [2025-04-13 17:59:45,226 INFO L226 Difference]: Without dead ends: 362 [2025-04-13 17:59:45,226 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:59:45,227 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:45,227 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2025-04-13 17:59:45,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 302. [2025-04-13 17:59:45,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.1827242524916945) internal successors, (958), 301 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 958 transitions. [2025-04-13 17:59:45,274 INFO L79 Accepts]: Start accepts. Automaton has 302 states and 958 transitions. Word has length 16 [2025-04-13 17:59:45,275 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:45,275 INFO L485 AbstractCegarLoop]: Abstraction has 302 states and 958 transitions. [2025-04-13 17:59:45,275 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:45,275 INFO L278 IsEmpty]: Start isEmpty. Operand 302 states and 958 transitions. [2025-04-13 17:59:45,275 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 17:59:45,275 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:45,275 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:45,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2025-04-13 17:59:45,475 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:45,476 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:45,476 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:45,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1202794006, now seen corresponding path program 50 times [2025-04-13 17:59:45,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:45,476 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276685714] [2025-04-13 17:59:45,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:45,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:45,479 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:45,482 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:45,482 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:45,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:45,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:45,606 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276685714] [2025-04-13 17:59:45,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276685714] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:45,606 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792760095] [2025-04-13 17:59:45,606 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:45,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:45,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:45,608 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:45,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2025-04-13 17:59:45,642 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 17:59:45,658 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 17:59:45,658 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:45,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:45,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-04-13 17:59:45,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:45,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:45,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792760095] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:45,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:45,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-04-13 17:59:45,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057378832] [2025-04-13 17:59:45,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:45,862 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:45,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:45,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:45,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:45,862 INFO L87 Difference]: Start difference. First operand 302 states and 958 transitions. Second operand has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:46,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:46,177 INFO L93 Difference]: Finished difference Result 352 states and 1031 transitions. [2025-04-13 17:59:46,177 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:59:46,177 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 17:59:46,177 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:46,179 INFO L225 Difference]: With dead ends: 352 [2025-04-13 17:59:46,179 INFO L226 Difference]: Without dead ends: 347 [2025-04-13 17:59:46,179 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:46,179 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:46,179 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:59:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-04-13 17:59:46,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 308. [2025-04-13 17:59:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.1498371335504887) internal successors, (967), 307 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 967 transitions. [2025-04-13 17:59:46,222 INFO L79 Accepts]: Start accepts. Automaton has 308 states and 967 transitions. Word has length 16 [2025-04-13 17:59:46,222 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:46,222 INFO L485 AbstractCegarLoop]: Abstraction has 308 states and 967 transitions. [2025-04-13 17:59:46,222 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:46,222 INFO L278 IsEmpty]: Start isEmpty. Operand 308 states and 967 transitions. [2025-04-13 17:59:46,223 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:46,223 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:46,223 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:46,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:46,423 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:46,423 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:46,424 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:46,424 INFO L85 PathProgramCache]: Analyzing trace with hash 93092546, now seen corresponding path program 51 times [2025-04-13 17:59:46,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:46,424 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185223475] [2025-04-13 17:59:46,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:46,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:46,427 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:59:46,432 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:46,432 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:59:46,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:46,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:46,480 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185223475] [2025-04-13 17:59:46,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185223475] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:46,480 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559730451] [2025-04-13 17:59:46,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:46,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:46,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:46,483 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:46,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2025-04-13 17:59:46,512 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:59:46,526 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:46,526 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:59:46,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:46,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:46,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:46,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:46,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559730451] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:46,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:46,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-04-13 17:59:46,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069350388] [2025-04-13 17:59:46,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:46,600 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 17:59:46,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:46,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 17:59:46,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:46,601 INFO L87 Difference]: Start difference. First operand 308 states and 967 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:46,781 INFO L93 Difference]: Finished difference Result 489 states and 1484 transitions. [2025-04-13 17:59:46,781 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 17:59:46,781 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:46,781 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:46,783 INFO L225 Difference]: With dead ends: 489 [2025-04-13 17:59:46,783 INFO L226 Difference]: Without dead ends: 467 [2025-04-13 17:59:46,783 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:46,783 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:46,783 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2025-04-13 17:59:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 303. [2025-04-13 17:59:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 3.165562913907285) internal successors, (956), 302 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 956 transitions. [2025-04-13 17:59:46,828 INFO L79 Accepts]: Start accepts. Automaton has 303 states and 956 transitions. Word has length 17 [2025-04-13 17:59:46,828 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:46,828 INFO L485 AbstractCegarLoop]: Abstraction has 303 states and 956 transitions. [2025-04-13 17:59:46,828 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:46,828 INFO L278 IsEmpty]: Start isEmpty. Operand 303 states and 956 transitions. [2025-04-13 17:59:46,829 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:46,829 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:46,829 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:46,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2025-04-13 17:59:47,029 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2025-04-13 17:59:47,029 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:47,029 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1149194845, now seen corresponding path program 52 times [2025-04-13 17:59:47,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:47,030 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672792038] [2025-04-13 17:59:47,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:47,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:47,032 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:47,035 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:47,035 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:47,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:47,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:47,083 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672792038] [2025-04-13 17:59:47,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672792038] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:47,083 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363329666] [2025-04-13 17:59:47,083 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:47,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:47,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:47,085 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:47,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2025-04-13 17:59:47,114 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:47,126 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:47,127 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:47,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:47,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:47,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:47,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:47,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363329666] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:47,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:47,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-04-13 17:59:47,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077678554] [2025-04-13 17:59:47,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:47,179 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 17:59:47,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:47,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 17:59:47,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-04-13 17:59:47,180 INFO L87 Difference]: Start difference. First operand 303 states and 956 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:47,408 INFO L93 Difference]: Finished difference Result 524 states and 1606 transitions. [2025-04-13 17:59:47,409 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 17:59:47,409 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:47,409 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:47,411 INFO L225 Difference]: With dead ends: 524 [2025-04-13 17:59:47,411 INFO L226 Difference]: Without dead ends: 515 [2025-04-13 17:59:47,411 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:59:47,411 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:47,411 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:47,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2025-04-13 17:59:47,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 315. [2025-04-13 17:59:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 3.178343949044586) internal successors, (998), 314 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 998 transitions. [2025-04-13 17:59:47,466 INFO L79 Accepts]: Start accepts. Automaton has 315 states and 998 transitions. Word has length 17 [2025-04-13 17:59:47,466 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:47,466 INFO L485 AbstractCegarLoop]: Abstraction has 315 states and 998 transitions. [2025-04-13 17:59:47,466 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:47,466 INFO L278 IsEmpty]: Start isEmpty. Operand 315 states and 998 transitions. [2025-04-13 17:59:47,467 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:47,467 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:47,467 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:47,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2025-04-13 17:59:47,667 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2025-04-13 17:59:47,667 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:47,667 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:47,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1704223744, now seen corresponding path program 53 times [2025-04-13 17:59:47,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:47,668 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158626213] [2025-04-13 17:59:47,668 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:47,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:47,670 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:59:47,675 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:47,675 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:59:47,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:47,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:47,724 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158626213] [2025-04-13 17:59:47,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158626213] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:47,724 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247341900] [2025-04-13 17:59:47,724 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:47,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:47,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:47,726 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:47,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2025-04-13 17:59:47,757 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:59:47,770 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:47,770 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 17:59:47,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:47,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:47,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:47,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:47,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247341900] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:47,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:47,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-04-13 17:59:47,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739535455] [2025-04-13 17:59:47,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:47,826 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:47,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:47,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:47,826 INFO L87 Difference]: Start difference. First operand 315 states and 998 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:48,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:48,023 INFO L93 Difference]: Finished difference Result 501 states and 1555 transitions. [2025-04-13 17:59:48,024 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 17:59:48,024 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:48,024 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:48,025 INFO L225 Difference]: With dead ends: 501 [2025-04-13 17:59:48,026 INFO L226 Difference]: Without dead ends: 484 [2025-04-13 17:59:48,026 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:48,026 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:48,026 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2025-04-13 17:59:48,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 354. [2025-04-13 17:59:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 3.1926345609065154) internal successors, (1127), 353 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:48,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1127 transitions. [2025-04-13 17:59:48,090 INFO L79 Accepts]: Start accepts. Automaton has 354 states and 1127 transitions. Word has length 17 [2025-04-13 17:59:48,090 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:48,090 INFO L485 AbstractCegarLoop]: Abstraction has 354 states and 1127 transitions. [2025-04-13 17:59:48,090 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:48,090 INFO L278 IsEmpty]: Start isEmpty. Operand 354 states and 1127 transitions. [2025-04-13 17:59:48,091 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:48,091 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:48,091 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:48,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2025-04-13 17:59:48,291 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2025-04-13 17:59:48,291 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:48,291 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1892984955, now seen corresponding path program 54 times [2025-04-13 17:59:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:48,292 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560282394] [2025-04-13 17:59:48,292 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:48,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:48,295 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:48,297 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:48,297 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:48,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:48,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:48,342 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560282394] [2025-04-13 17:59:48,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560282394] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:48,342 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209304789] [2025-04-13 17:59:48,342 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:48,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:48,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:48,344 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:48,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2025-04-13 17:59:48,373 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:48,386 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:48,386 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:48,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:48,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:48,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:48,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:48,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209304789] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:48,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:48,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-04-13 17:59:48,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202008091] [2025-04-13 17:59:48,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:48,452 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 17:59:48,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:48,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 17:59:48,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-04-13 17:59:48,453 INFO L87 Difference]: Start difference. First operand 354 states and 1127 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:48,770 INFO L93 Difference]: Finished difference Result 472 states and 1437 transitions. [2025-04-13 17:59:48,771 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 17:59:48,771 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:48,771 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:48,773 INFO L225 Difference]: With dead ends: 472 [2025-04-13 17:59:48,773 INFO L226 Difference]: Without dead ends: 463 [2025-04-13 17:59:48,773 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:59:48,773 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:48,773 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:48,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2025-04-13 17:59:48,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 360. [2025-04-13 17:59:48,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 3.1977715877437327) internal successors, (1148), 359 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 1148 transitions. [2025-04-13 17:59:48,845 INFO L79 Accepts]: Start accepts. Automaton has 360 states and 1148 transitions. Word has length 17 [2025-04-13 17:59:48,846 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:48,846 INFO L485 AbstractCegarLoop]: Abstraction has 360 states and 1148 transitions. [2025-04-13 17:59:48,846 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:48,846 INFO L278 IsEmpty]: Start isEmpty. Operand 360 states and 1148 transitions. [2025-04-13 17:59:48,846 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:48,846 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:48,846 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:48,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2025-04-13 17:59:49,046 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:49,047 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:49,047 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1274586248, now seen corresponding path program 55 times [2025-04-13 17:59:49,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:49,047 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284774498] [2025-04-13 17:59:49,047 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:49,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:49,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 17:59:49,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:49,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:49,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:49,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:49,099 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284774498] [2025-04-13 17:59:49,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284774498] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:49,099 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179689404] [2025-04-13 17:59:49,099 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:49,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:49,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:49,101 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:49,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2025-04-13 17:59:49,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 17:59:49,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:49,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:49,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:49,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:49,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:49,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:49,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179689404] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:49,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:49,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-04-13 17:59:49,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627631987] [2025-04-13 17:59:49,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:49,216 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:49,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:49,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:49,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:49,217 INFO L87 Difference]: Start difference. First operand 360 states and 1148 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:49,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:49,529 INFO L93 Difference]: Finished difference Result 559 states and 1762 transitions. [2025-04-13 17:59:49,529 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 17:59:49,530 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:49,530 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:49,532 INFO L225 Difference]: With dead ends: 559 [2025-04-13 17:59:49,532 INFO L226 Difference]: Without dead ends: 536 [2025-04-13 17:59:49,532 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:49,533 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:49,533 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:49,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2025-04-13 17:59:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 387. [2025-04-13 17:59:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.2746113989637307) internal successors, (1264), 386 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1264 transitions. [2025-04-13 17:59:49,611 INFO L79 Accepts]: Start accepts. Automaton has 387 states and 1264 transitions. Word has length 17 [2025-04-13 17:59:49,611 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:49,611 INFO L485 AbstractCegarLoop]: Abstraction has 387 states and 1264 transitions. [2025-04-13 17:59:49,611 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:49,611 INFO L278 IsEmpty]: Start isEmpty. Operand 387 states and 1264 transitions. [2025-04-13 17:59:49,612 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:49,612 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:49,612 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:49,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2025-04-13 17:59:49,812 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:49,812 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:49,813 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:49,813 INFO L85 PathProgramCache]: Analyzing trace with hash -532618141, now seen corresponding path program 56 times [2025-04-13 17:59:49,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:49,813 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440033100] [2025-04-13 17:59:49,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:49,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:49,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:49,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:49,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:49,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:49,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:49,861 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440033100] [2025-04-13 17:59:49,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440033100] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:49,861 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968864615] [2025-04-13 17:59:49,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:49,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:49,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:49,863 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:49,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2025-04-13 17:59:49,891 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:49,904 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:49,904 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:49,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:49,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:49,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:49,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:49,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968864615] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:49,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:49,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-04-13 17:59:49,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895431704] [2025-04-13 17:59:49,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:49,969 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:49,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:49,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:49,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:49,970 INFO L87 Difference]: Start difference. First operand 387 states and 1264 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:50,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:50,296 INFO L93 Difference]: Finished difference Result 527 states and 1651 transitions. [2025-04-13 17:59:50,296 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 17:59:50,296 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:50,296 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:50,298 INFO L225 Difference]: With dead ends: 527 [2025-04-13 17:59:50,298 INFO L226 Difference]: Without dead ends: 518 [2025-04-13 17:59:50,298 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2025-04-13 17:59:50,299 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:50,299 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2025-04-13 17:59:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 397. [2025-04-13 17:59:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.2702020202020203) internal successors, (1295), 396 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1295 transitions. [2025-04-13 17:59:50,374 INFO L79 Accepts]: Start accepts. Automaton has 397 states and 1295 transitions. Word has length 17 [2025-04-13 17:59:50,374 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:50,374 INFO L485 AbstractCegarLoop]: Abstraction has 397 states and 1295 transitions. [2025-04-13 17:59:50,374 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:50,374 INFO L278 IsEmpty]: Start isEmpty. Operand 397 states and 1295 transitions. [2025-04-13 17:59:50,374 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:50,374 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:50,375 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:50,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2025-04-13 17:59:50,575 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2025-04-13 17:59:50,575 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:50,575 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash 400845568, now seen corresponding path program 57 times [2025-04-13 17:59:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:50,576 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299152773] [2025-04-13 17:59:50,576 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:50,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:50,578 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:50,581 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:50,581 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:50,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:50,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:50,633 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299152773] [2025-04-13 17:59:50,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299152773] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:50,634 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366228101] [2025-04-13 17:59:50,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:50,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:50,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:50,635 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:50,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2025-04-13 17:59:50,663 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:50,676 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:50,676 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:50,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:50,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:50,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:50,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:50,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366228101] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:50,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:50,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-04-13 17:59:50,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538045524] [2025-04-13 17:59:50,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:50,753 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:50,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:50,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:50,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:50,754 INFO L87 Difference]: Start difference. First operand 397 states and 1295 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:51,044 INFO L93 Difference]: Finished difference Result 596 states and 1925 transitions. [2025-04-13 17:59:51,045 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 17:59:51,045 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:51,045 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:51,047 INFO L225 Difference]: With dead ends: 596 [2025-04-13 17:59:51,047 INFO L226 Difference]: Without dead ends: 576 [2025-04-13 17:59:51,047 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2025-04-13 17:59:51,047 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:51,048 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-04-13 17:59:51,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 433. [2025-04-13 17:59:51,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 3.3125) internal successors, (1431), 432 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1431 transitions. [2025-04-13 17:59:51,134 INFO L79 Accepts]: Start accepts. Automaton has 433 states and 1431 transitions. Word has length 17 [2025-04-13 17:59:51,134 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:51,134 INFO L485 AbstractCegarLoop]: Abstraction has 433 states and 1431 transitions. [2025-04-13 17:59:51,134 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:51,134 INFO L278 IsEmpty]: Start isEmpty. Operand 433 states and 1431 transitions. [2025-04-13 17:59:51,134 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:51,134 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:51,134 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:51,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2025-04-13 17:59:51,335 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:51,335 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:51,335 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:51,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1173832645, now seen corresponding path program 58 times [2025-04-13 17:59:51,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:51,335 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315211192] [2025-04-13 17:59:51,335 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:51,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:51,338 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:51,340 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:51,340 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:51,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:51,377 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315211192] [2025-04-13 17:59:51,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315211192] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:51,377 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489369171] [2025-04-13 17:59:51,377 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:51,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:51,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:51,379 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:51,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2025-04-13 17:59:51,409 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:51,423 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:51,423 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:51,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:51,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:51,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:51,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489369171] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:51,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:51,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-04-13 17:59:51,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549424375] [2025-04-13 17:59:51,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:51,480 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:51,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:51,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:51,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:51,480 INFO L87 Difference]: Start difference. First operand 433 states and 1431 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:51,847 INFO L93 Difference]: Finished difference Result 581 states and 1898 transitions. [2025-04-13 17:59:51,847 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 17:59:51,847 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:51,847 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:51,850 INFO L225 Difference]: With dead ends: 581 [2025-04-13 17:59:51,850 INFO L226 Difference]: Without dead ends: 572 [2025-04-13 17:59:51,850 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=259, Invalid=443, Unknown=0, NotChecked=0, Total=702 [2025-04-13 17:59:51,850 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:51,850 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:51,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2025-04-13 17:59:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 447. [2025-04-13 17:59:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.3497757847533634) internal successors, (1494), 446 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1494 transitions. [2025-04-13 17:59:51,936 INFO L79 Accepts]: Start accepts. Automaton has 447 states and 1494 transitions. Word has length 17 [2025-04-13 17:59:51,936 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:51,936 INFO L485 AbstractCegarLoop]: Abstraction has 447 states and 1494 transitions. [2025-04-13 17:59:51,936 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:51,936 INFO L278 IsEmpty]: Start isEmpty. Operand 447 states and 1494 transitions. [2025-04-13 17:59:51,937 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:51,937 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:51,937 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:51,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2025-04-13 17:59:52,137 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:52,138 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:52,138 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:52,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1320268701, now seen corresponding path program 59 times [2025-04-13 17:59:52,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:52,138 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950967459] [2025-04-13 17:59:52,138 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:52,141 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:52,144 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:52,144 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:52,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:52,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:52,188 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950967459] [2025-04-13 17:59:52,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950967459] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:52,188 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644296361] [2025-04-13 17:59:52,188 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:52,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:52,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:52,190 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:52,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2025-04-13 17:59:52,220 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:52,237 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:52,237 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:52,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:52,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:52,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:52,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:52,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644296361] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:52,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:52,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-04-13 17:59:52,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357438334] [2025-04-13 17:59:52,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:52,287 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:52,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:52,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:52,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:52,287 INFO L87 Difference]: Start difference. First operand 447 states and 1494 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:52,580 INFO L93 Difference]: Finished difference Result 520 states and 1690 transitions. [2025-04-13 17:59:52,580 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 17:59:52,580 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:52,580 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:52,582 INFO L225 Difference]: With dead ends: 520 [2025-04-13 17:59:52,582 INFO L226 Difference]: Without dead ends: 509 [2025-04-13 17:59:52,583 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2025-04-13 17:59:52,583 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:52,583 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2025-04-13 17:59:52,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 439. [2025-04-13 17:59:52,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 3.3333333333333335) internal successors, (1460), 438 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:52,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 1460 transitions. [2025-04-13 17:59:52,682 INFO L79 Accepts]: Start accepts. Automaton has 439 states and 1460 transitions. Word has length 17 [2025-04-13 17:59:52,682 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:52,682 INFO L485 AbstractCegarLoop]: Abstraction has 439 states and 1460 transitions. [2025-04-13 17:59:52,682 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:52,682 INFO L278 IsEmpty]: Start isEmpty. Operand 439 states and 1460 transitions. [2025-04-13 17:59:52,683 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:52,683 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:52,683 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:52,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:52,883 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2025-04-13 17:59:52,883 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:52,883 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash -458623608, now seen corresponding path program 60 times [2025-04-13 17:59:52,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:52,884 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417371732] [2025-04-13 17:59:52,884 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:52,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:52,886 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:59:52,890 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:52,890 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:59:52,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:52,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:52,941 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417371732] [2025-04-13 17:59:52,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417371732] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:52,941 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856585658] [2025-04-13 17:59:52,942 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:52,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:52,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:52,943 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:52,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2025-04-13 17:59:52,976 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:59:52,989 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:52,989 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:59:52,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:52,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:52,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:53,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856585658] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:53,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:53,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-04-13 17:59:53,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88445673] [2025-04-13 17:59:53,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:53,059 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:53,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:53,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:53,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:53,060 INFO L87 Difference]: Start difference. First operand 439 states and 1460 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:53,412 INFO L93 Difference]: Finished difference Result 603 states and 1923 transitions. [2025-04-13 17:59:53,412 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 17:59:53,413 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:53,413 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:53,415 INFO L225 Difference]: With dead ends: 603 [2025-04-13 17:59:53,415 INFO L226 Difference]: Without dead ends: 593 [2025-04-13 17:59:53,415 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=238, Invalid=632, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:59:53,415 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:53,415 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:53,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2025-04-13 17:59:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 417. [2025-04-13 17:59:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 3.2764423076923075) internal successors, (1363), 416 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1363 transitions. [2025-04-13 17:59:53,501 INFO L79 Accepts]: Start accepts. Automaton has 417 states and 1363 transitions. Word has length 17 [2025-04-13 17:59:53,501 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:53,501 INFO L485 AbstractCegarLoop]: Abstraction has 417 states and 1363 transitions. [2025-04-13 17:59:53,501 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:53,501 INFO L278 IsEmpty]: Start isEmpty. Operand 417 states and 1363 transitions. [2025-04-13 17:59:53,502 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:53,502 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:53,502 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:53,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:53,702 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:53,702 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:53,703 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1678325595, now seen corresponding path program 61 times [2025-04-13 17:59:53,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:53,703 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561065160] [2025-04-13 17:59:53,703 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:53,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:53,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 17:59:53,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:53,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:53,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:53,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:53,753 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561065160] [2025-04-13 17:59:53,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561065160] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:53,753 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391694253] [2025-04-13 17:59:53,753 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:53,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:53,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:53,755 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:53,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2025-04-13 17:59:53,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 17:59:53,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:53,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:53,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:53,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:53,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:53,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:53,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391694253] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:53,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:53,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 17:59:53,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926514388] [2025-04-13 17:59:53,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:53,870 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 17:59:53,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:53,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 17:59:53,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-04-13 17:59:53,871 INFO L87 Difference]: Start difference. First operand 417 states and 1363 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:54,397 INFO L93 Difference]: Finished difference Result 553 states and 1706 transitions. [2025-04-13 17:59:54,397 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 17:59:54,397 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:54,397 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:54,399 INFO L225 Difference]: With dead ends: 553 [2025-04-13 17:59:54,399 INFO L226 Difference]: Without dead ends: 546 [2025-04-13 17:59:54,399 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 17:59:54,399 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:54,399 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:59:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2025-04-13 17:59:54,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 427. [2025-04-13 17:59:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 3.276995305164319) internal successors, (1396), 426 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1396 transitions. [2025-04-13 17:59:54,492 INFO L79 Accepts]: Start accepts. Automaton has 427 states and 1396 transitions. Word has length 17 [2025-04-13 17:59:54,492 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:54,492 INFO L485 AbstractCegarLoop]: Abstraction has 427 states and 1396 transitions. [2025-04-13 17:59:54,492 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:54,492 INFO L278 IsEmpty]: Start isEmpty. Operand 427 states and 1396 transitions. [2025-04-13 17:59:54,493 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:54,493 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:54,493 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:54,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2025-04-13 17:59:54,693 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2025-04-13 17:59:54,693 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:54,693 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:54,693 INFO L85 PathProgramCache]: Analyzing trace with hash 219896797, now seen corresponding path program 62 times [2025-04-13 17:59:54,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:54,694 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132937287] [2025-04-13 17:59:54,694 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:54,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:54,696 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:54,699 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:54,699 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:54,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:54,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:54,750 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132937287] [2025-04-13 17:59:54,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132937287] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:54,750 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102761604] [2025-04-13 17:59:54,750 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:54,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:54,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:54,752 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:54,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2025-04-13 17:59:54,783 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:54,799 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:54,799 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:54,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:54,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:54,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:54,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:54,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102761604] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:54,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:54,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2025-04-13 17:59:54,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995134746] [2025-04-13 17:59:54,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:54,888 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:54,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:54,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:54,889 INFO L87 Difference]: Start difference. First operand 427 states and 1396 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17:59:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:55,359 INFO L93 Difference]: Finished difference Result 612 states and 1936 transitions. [2025-04-13 17:59:55,359 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 17:59:55,360 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17 [2025-04-13 17:59:55,360 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:55,361 INFO L225 Difference]: With dead ends: 612 [2025-04-13 17:59:55,361 INFO L226 Difference]: Without dead ends: 602 [2025-04-13 17:59:55,362 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=658, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:59:55,362 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:55,362 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:55,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2025-04-13 17:59:55,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 435. [2025-04-13 17:59:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.294930875576037) internal successors, (1430), 434 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1430 transitions. [2025-04-13 17:59:55,466 INFO L79 Accepts]: Start accepts. Automaton has 435 states and 1430 transitions. Word has length 17 [2025-04-13 17:59:55,466 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:55,466 INFO L485 AbstractCegarLoop]: Abstraction has 435 states and 1430 transitions. [2025-04-13 17:59:55,466 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17:59:55,466 INFO L278 IsEmpty]: Start isEmpty. Operand 435 states and 1430 transitions. [2025-04-13 17:59:55,466 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:55,466 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:55,466 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:55,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:55,667 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2025-04-13 17:59:55,667 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:55,667 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:55,667 INFO L85 PathProgramCache]: Analyzing trace with hash -134512219, now seen corresponding path program 63 times [2025-04-13 17:59:55,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:55,667 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365332608] [2025-04-13 17:59:55,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:55,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:55,670 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:59:55,674 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:55,675 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:59:55,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:55,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:55,714 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365332608] [2025-04-13 17:59:55,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365332608] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:55,714 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353226297] [2025-04-13 17:59:55,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:55,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:55,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:55,716 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:55,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2025-04-13 17:59:55,744 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:59:55,757 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:55,758 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 17:59:55,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:55,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:55,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:55,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:55,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353226297] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:55,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:55,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2025-04-13 17:59:55,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028596765] [2025-04-13 17:59:55,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:55,834 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 17:59:55,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:55,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 17:59:55,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:59:55,834 INFO L87 Difference]: Start difference. First operand 435 states and 1430 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17:59:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:56,294 INFO L93 Difference]: Finished difference Result 624 states and 2058 transitions. [2025-04-13 17:59:56,294 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 17:59:56,294 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17 [2025-04-13 17:59:56,294 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:56,296 INFO L225 Difference]: With dead ends: 624 [2025-04-13 17:59:56,296 INFO L226 Difference]: Without dead ends: 613 [2025-04-13 17:59:56,296 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=278, Invalid=592, Unknown=0, NotChecked=0, Total=870 [2025-04-13 17:59:56,296 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:56,297 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2025-04-13 17:59:56,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 461. [2025-04-13 17:59:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 3.3152173913043477) internal successors, (1525), 460 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1525 transitions. [2025-04-13 17:59:56,406 INFO L79 Accepts]: Start accepts. Automaton has 461 states and 1525 transitions. Word has length 17 [2025-04-13 17:59:56,406 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:56,406 INFO L485 AbstractCegarLoop]: Abstraction has 461 states and 1525 transitions. [2025-04-13 17:59:56,406 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17:59:56,406 INFO L278 IsEmpty]: Start isEmpty. Operand 461 states and 1525 transitions. [2025-04-13 17:59:56,407 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:56,407 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:56,407 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:56,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:56,607 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:56,607 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:56,608 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:56,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1666353731, now seen corresponding path program 64 times [2025-04-13 17:59:56,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:56,608 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838231837] [2025-04-13 17:59:56,608 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:56,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:56,610 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:56,613 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:56,613 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:56,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:56,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:56,652 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838231837] [2025-04-13 17:59:56,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838231837] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:56,652 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614861183] [2025-04-13 17:59:56,652 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:56,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:56,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:56,654 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:56,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2025-04-13 17:59:56,683 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:56,696 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:56,696 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:56,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:56,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:56,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:56,732 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:56,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614861183] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:56,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:56,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2025-04-13 17:59:56,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002773699] [2025-04-13 17:59:56,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:56,752 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:56,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:56,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:56,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:56,753 INFO L87 Difference]: Start difference. First operand 461 states and 1525 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:57,092 INFO L93 Difference]: Finished difference Result 588 states and 1924 transitions. [2025-04-13 17:59:57,092 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 17:59:57,092 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:57,092 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:57,093 INFO L225 Difference]: With dead ends: 588 [2025-04-13 17:59:57,093 INFO L226 Difference]: Without dead ends: 573 [2025-04-13 17:59:57,094 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2025-04-13 17:59:57,094 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:57,094 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:57,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2025-04-13 17:59:57,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 459. [2025-04-13 17:59:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 3.3100436681222707) internal successors, (1516), 458 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 1516 transitions. [2025-04-13 17:59:57,203 INFO L79 Accepts]: Start accepts. Automaton has 459 states and 1516 transitions. Word has length 17 [2025-04-13 17:59:57,203 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:57,204 INFO L485 AbstractCegarLoop]: Abstraction has 459 states and 1516 transitions. [2025-04-13 17:59:57,204 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:57,204 INFO L278 IsEmpty]: Start isEmpty. Operand 459 states and 1516 transitions. [2025-04-13 17:59:57,204 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:57,204 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:57,204 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:57,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2025-04-13 17:59:57,405 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:57,405 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:57,405 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:57,405 INFO L85 PathProgramCache]: Analyzing trace with hash -918000257, now seen corresponding path program 65 times [2025-04-13 17:59:57,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:57,405 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246925075] [2025-04-13 17:59:57,405 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:57,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:57,408 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:57,411 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:57,411 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:57,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:57,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:57,458 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246925075] [2025-04-13 17:59:57,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246925075] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:57,458 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375898947] [2025-04-13 17:59:57,458 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:57,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:57,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:57,460 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:57,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2025-04-13 17:59:57,497 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 17:59:57,510 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:57,510 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:57,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:57,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:57,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:57,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:57,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375898947] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:57,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:57,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-04-13 17:59:57,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435226589] [2025-04-13 17:59:57,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:57,566 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 17:59:57,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:57,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 17:59:57,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-04-13 17:59:57,567 INFO L87 Difference]: Start difference. First operand 459 states and 1516 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:57,927 INFO L93 Difference]: Finished difference Result 584 states and 1894 transitions. [2025-04-13 17:59:57,927 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 17:59:57,928 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:57,928 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:57,929 INFO L225 Difference]: With dead ends: 584 [2025-04-13 17:59:57,929 INFO L226 Difference]: Without dead ends: 569 [2025-04-13 17:59:57,929 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2025-04-13 17:59:57,930 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:57,930 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:57,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-04-13 17:59:58,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 473. [2025-04-13 17:59:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 3.3241525423728815) internal successors, (1569), 472 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 1569 transitions. [2025-04-13 17:59:58,044 INFO L79 Accepts]: Start accepts. Automaton has 473 states and 1569 transitions. Word has length 17 [2025-04-13 17:59:58,044 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:58,044 INFO L485 AbstractCegarLoop]: Abstraction has 473 states and 1569 transitions. [2025-04-13 17:59:58,044 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:58,044 INFO L278 IsEmpty]: Start isEmpty. Operand 473 states and 1569 transitions. [2025-04-13 17:59:58,044 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:58,045 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:58,045 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:58,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2025-04-13 17:59:58,245 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2025-04-13 17:59:58,245 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:58,245 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:58,245 INFO L85 PathProgramCache]: Analyzing trace with hash 681147269, now seen corresponding path program 66 times [2025-04-13 17:59:58,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:58,245 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485126750] [2025-04-13 17:59:58,246 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:58,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:58,248 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:59:58,252 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:58,252 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:59:58,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:58,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:58,301 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485126750] [2025-04-13 17:59:58,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485126750] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:58,301 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918109328] [2025-04-13 17:59:58,301 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:58,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:58,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:58,303 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:58,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2025-04-13 17:59:58,331 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 17:59:58,344 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:58,344 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 17:59:58,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:58,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:58,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:58,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:58,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918109328] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:58,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:58,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 17:59:58,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80048365] [2025-04-13 17:59:58,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:58,429 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:59:58,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:58,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:59:58,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:59:58,429 INFO L87 Difference]: Start difference. First operand 473 states and 1569 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:59,102 INFO L93 Difference]: Finished difference Result 703 states and 2233 transitions. [2025-04-13 17:59:59,103 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 17:59:59,103 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 17:59:59,103 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:59,105 INFO L225 Difference]: With dead ends: 703 [2025-04-13 17:59:59,105 INFO L226 Difference]: Without dead ends: 696 [2025-04-13 17:59:59,105 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=451, Invalid=1355, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 17:59:59,105 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:59,105 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:59:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2025-04-13 17:59:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 509. [2025-04-13 17:59:59,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 3.328740157480315) internal successors, (1691), 508 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 1691 transitions. [2025-04-13 17:59:59,239 INFO L79 Accepts]: Start accepts. Automaton has 509 states and 1691 transitions. Word has length 17 [2025-04-13 17:59:59,239 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:59,240 INFO L485 AbstractCegarLoop]: Abstraction has 509 states and 1691 transitions. [2025-04-13 17:59:59,240 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:59,240 INFO L278 IsEmpty]: Start isEmpty. Operand 509 states and 1691 transitions. [2025-04-13 17:59:59,240 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 17:59:59,240 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:59,240 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:59,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2025-04-13 17:59:59,441 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2025-04-13 17:59:59,441 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 17:59:59,441 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:59,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2073023395, now seen corresponding path program 67 times [2025-04-13 17:59:59,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:59,441 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876990855] [2025-04-13 17:59:59,441 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:59,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:59,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 17:59:59,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:59,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:59,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:59,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:59,496 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876990855] [2025-04-13 17:59:59,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876990855] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:59,496 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092254343] [2025-04-13 17:59:59,496 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:59,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:59,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:59,498 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 17:59:59,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2025-04-13 17:59:59,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 17:59:59,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 17:59:59,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:59,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:59,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:59:59,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:59:59,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092254343] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:59,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:59,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2025-04-13 17:59:59,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224315279] [2025-04-13 17:59:59,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:59,637 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 17:59:59,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:59,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 17:59:59,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-04-13 17:59:59,637 INFO L87 Difference]: Start difference. First operand 509 states and 1691 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:00,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:00,298 INFO L93 Difference]: Finished difference Result 725 states and 2356 transitions. [2025-04-13 18:00:00,298 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:00:00,298 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:00,298 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:00,300 INFO L225 Difference]: With dead ends: 725 [2025-04-13 18:00:00,300 INFO L226 Difference]: Without dead ends: 716 [2025-04-13 18:00:00,300 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:00:00,301 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:00,301 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:00:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2025-04-13 18:00:00,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 559. [2025-04-13 18:00:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 3.3620071684587813) internal successors, (1876), 558 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:00,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 1876 transitions. [2025-04-13 18:00:00,451 INFO L79 Accepts]: Start accepts. Automaton has 559 states and 1876 transitions. Word has length 17 [2025-04-13 18:00:00,451 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:00,451 INFO L485 AbstractCegarLoop]: Abstraction has 559 states and 1876 transitions. [2025-04-13 18:00:00,451 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:00,451 INFO L278 IsEmpty]: Start isEmpty. Operand 559 states and 1876 transitions. [2025-04-13 18:00:00,451 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:00,451 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:00,452 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:00,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2025-04-13 18:00:00,652 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:00,652 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:00,652 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2038497339, now seen corresponding path program 68 times [2025-04-13 18:00:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:00,652 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479866926] [2025-04-13 18:00:00,653 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:00,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:00,655 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:00,658 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:00,658 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:00,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:00,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:00,711 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479866926] [2025-04-13 18:00:00,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479866926] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:00,711 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253416366] [2025-04-13 18:00:00,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:00,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:00,713 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:00,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2025-04-13 18:00:00,745 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:00,760 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:00,760 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:00,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:00,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:00,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:00,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:00:00,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253416366] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:00,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:00,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2025-04-13 18:00:00,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637992633] [2025-04-13 18:00:00,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:00,860 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:00:00,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:00,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:00:00,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:00,860 INFO L87 Difference]: Start difference. First operand 559 states and 1876 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:01,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:01,446 INFO L93 Difference]: Finished difference Result 837 states and 2824 transitions. [2025-04-13 18:00:01,446 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:00:01,447 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:01,447 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:01,449 INFO L225 Difference]: With dead ends: 837 [2025-04-13 18:00:01,449 INFO L226 Difference]: Without dead ends: 830 [2025-04-13 18:00:01,449 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2025-04-13 18:00:01,449 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:01,450 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2025-04-13 18:00:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 679. [2025-04-13 18:00:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 3.4365781710914454) internal successors, (2330), 678 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2330 transitions. [2025-04-13 18:00:01,638 INFO L79 Accepts]: Start accepts. Automaton has 679 states and 2330 transitions. Word has length 17 [2025-04-13 18:00:01,638 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:01,638 INFO L485 AbstractCegarLoop]: Abstraction has 679 states and 2330 transitions. [2025-04-13 18:00:01,638 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:01,638 INFO L278 IsEmpty]: Start isEmpty. Operand 679 states and 2330 transitions. [2025-04-13 18:00:01,639 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:01,639 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:01,639 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:01,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2025-04-13 18:00:01,839 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:01,840 INFO L403 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:01,840 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash -237631389, now seen corresponding path program 69 times [2025-04-13 18:00:01,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:01,840 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394220175] [2025-04-13 18:00:01,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:01,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:01,843 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:01,846 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:01,846 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:00:01,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:01,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:01,895 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394220175] [2025-04-13 18:00:01,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394220175] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:01,895 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248219066] [2025-04-13 18:00:01,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:01,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:01,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:01,897 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:01,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2025-04-13 18:00:01,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:01,941 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:01,941 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:00:01,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:01,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:01,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:01,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:01,985 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:00:02,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248219066] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:02,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:02,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2025-04-13 18:00:02,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854887423] [2025-04-13 18:00:02,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:02,011 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:00:02,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:02,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:00:02,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:02,011 INFO L87 Difference]: Start difference. First operand 679 states and 2330 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:02,457 INFO L93 Difference]: Finished difference Result 778 states and 2637 transitions. [2025-04-13 18:00:02,457 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 18:00:02,457 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:02,458 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:02,460 INFO L225 Difference]: With dead ends: 778 [2025-04-13 18:00:02,460 INFO L226 Difference]: Without dead ends: 767 [2025-04-13 18:00:02,460 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:00:02,460 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:02,460 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:02,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2025-04-13 18:00:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 675. [2025-04-13 18:00:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 3.427299703264095) internal successors, (2310), 674 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 2310 transitions. [2025-04-13 18:00:02,653 INFO L79 Accepts]: Start accepts. Automaton has 675 states and 2310 transitions. Word has length 17 [2025-04-13 18:00:02,653 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:02,653 INFO L485 AbstractCegarLoop]: Abstraction has 675 states and 2310 transitions. [2025-04-13 18:00:02,653 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:02,653 INFO L278 IsEmpty]: Start isEmpty. Operand 675 states and 2310 transitions. [2025-04-13 18:00:02,654 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:02,654 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:02,654 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:02,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2025-04-13 18:00:02,854 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2025-04-13 18:00:02,856 INFO L403 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:02,856 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1472981919, now seen corresponding path program 70 times [2025-04-13 18:00:02,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:02,856 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921116274] [2025-04-13 18:00:02,856 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:02,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:02,859 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:02,862 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:02,862 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:02,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:02,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:02,906 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921116274] [2025-04-13 18:00:02,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921116274] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:02,906 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916949239] [2025-04-13 18:00:02,906 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:02,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:02,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:02,908 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:02,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2025-04-13 18:00:02,943 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:02,955 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:02,956 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:02,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:02,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:02,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:03,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:03,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916949239] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:03,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2025-04-13 18:00:03,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204038749] [2025-04-13 18:00:03,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:03,054 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:00:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:03,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:00:03,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:00:03,054 INFO L87 Difference]: Start difference. First operand 675 states and 2310 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:03,582 INFO L93 Difference]: Finished difference Result 812 states and 2746 transitions. [2025-04-13 18:00:03,583 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:00:03,583 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:03,583 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:03,585 INFO L225 Difference]: With dead ends: 812 [2025-04-13 18:00:03,585 INFO L226 Difference]: Without dead ends: 797 [2025-04-13 18:00:03,585 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:00:03,586 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:03,586 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:03,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2025-04-13 18:00:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 699. [2025-04-13 18:00:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 3.444126074498567) internal successors, (2404), 698 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 2404 transitions. [2025-04-13 18:00:03,788 INFO L79 Accepts]: Start accepts. Automaton has 699 states and 2404 transitions. Word has length 17 [2025-04-13 18:00:03,789 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:03,789 INFO L485 AbstractCegarLoop]: Abstraction has 699 states and 2404 transitions. [2025-04-13 18:00:03,789 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:03,789 INFO L278 IsEmpty]: Start isEmpty. Operand 699 states and 2404 transitions. [2025-04-13 18:00:03,790 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:03,790 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:03,790 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:03,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2025-04-13 18:00:03,990 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:03,990 INFO L403 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:03,991 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:03,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1332580381, now seen corresponding path program 71 times [2025-04-13 18:00:03,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:03,991 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722120007] [2025-04-13 18:00:03,991 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:03,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:03,994 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:04,003 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:04,003 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:04,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:04,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:04,057 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722120007] [2025-04-13 18:00:04,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722120007] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:04,057 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925861225] [2025-04-13 18:00:04,057 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:04,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:04,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:04,059 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:04,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2025-04-13 18:00:04,089 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:04,103 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:04,103 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:04,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:04,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:04,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:04,145 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:04,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925861225] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:04,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:04,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-04-13 18:00:04,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426176634] [2025-04-13 18:00:04,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:04,166 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:00:04,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:04,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:00:04,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:00:04,167 INFO L87 Difference]: Start difference. First operand 699 states and 2404 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:04,731 INFO L93 Difference]: Finished difference Result 856 states and 2880 transitions. [2025-04-13 18:00:04,731 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 18:00:04,731 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:04,731 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:04,734 INFO L225 Difference]: With dead ends: 856 [2025-04-13 18:00:04,734 INFO L226 Difference]: Without dead ends: 837 [2025-04-13 18:00:04,734 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:00:04,734 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:04,734 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:04,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2025-04-13 18:00:04,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 731. [2025-04-13 18:00:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 3.4493150684931506) internal successors, (2518), 730 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2518 transitions. [2025-04-13 18:00:04,965 INFO L79 Accepts]: Start accepts. Automaton has 731 states and 2518 transitions. Word has length 17 [2025-04-13 18:00:04,965 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:04,965 INFO L485 AbstractCegarLoop]: Abstraction has 731 states and 2518 transitions. [2025-04-13 18:00:04,965 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:04,966 INFO L278 IsEmpty]: Start isEmpty. Operand 731 states and 2518 transitions. [2025-04-13 18:00:04,967 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:04,968 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:04,968 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:04,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2025-04-13 18:00:05,168 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:05,168 INFO L403 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:05,168 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash -538905884, now seen corresponding path program 72 times [2025-04-13 18:00:05,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:05,169 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202471374] [2025-04-13 18:00:05,169 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:05,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:05,172 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:05,176 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:05,176 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:05,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:05,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:05,223 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202471374] [2025-04-13 18:00:05,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202471374] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:05,223 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96197088] [2025-04-13 18:00:05,223 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:05,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:05,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:05,225 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:05,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2025-04-13 18:00:05,255 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:05,272 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:05,272 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:05,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:05,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:05,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:05,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:05,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96197088] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:05,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:05,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 18:00:05,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024310652] [2025-04-13 18:00:05,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:05,376 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:00:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:05,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:00:05,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:00:05,376 INFO L87 Difference]: Start difference. First operand 731 states and 2518 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:06,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:06,105 INFO L93 Difference]: Finished difference Result 957 states and 3168 transitions. [2025-04-13 18:00:06,105 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:00:06,105 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:06,105 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:06,108 INFO L225 Difference]: With dead ends: 957 [2025-04-13 18:00:06,108 INFO L226 Difference]: Without dead ends: 922 [2025-04-13 18:00:06,108 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:00:06,108 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:06,108 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:00:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2025-04-13 18:00:06,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 766. [2025-04-13 18:00:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 765 states have (on average 3.4496732026143793) internal successors, (2639), 765 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 2639 transitions. [2025-04-13 18:00:06,331 INFO L79 Accepts]: Start accepts. Automaton has 766 states and 2639 transitions. Word has length 17 [2025-04-13 18:00:06,331 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:06,331 INFO L485 AbstractCegarLoop]: Abstraction has 766 states and 2639 transitions. [2025-04-13 18:00:06,331 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:06,331 INFO L278 IsEmpty]: Start isEmpty. Operand 766 states and 2639 transitions. [2025-04-13 18:00:06,332 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:06,332 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:06,332 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:06,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2025-04-13 18:00:06,533 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:06,533 INFO L403 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:06,533 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:06,533 INFO L85 PathProgramCache]: Analyzing trace with hash -727667095, now seen corresponding path program 73 times [2025-04-13 18:00:06,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:06,533 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098913826] [2025-04-13 18:00:06,533 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:06,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:06,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:06,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:06,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:06,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:06,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:06,586 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098913826] [2025-04-13 18:00:06,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098913826] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:06,586 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142051410] [2025-04-13 18:00:06,586 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:06,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:06,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:06,588 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:06,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2025-04-13 18:00:06,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:06,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:06,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:06,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:06,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:06,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:06,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:06,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142051410] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:06,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:06,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 18:00:06,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195159307] [2025-04-13 18:00:06,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:06,702 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:00:06,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:06,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:00:06,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:00:06,703 INFO L87 Difference]: Start difference. First operand 766 states and 2639 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:07,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:07,328 INFO L93 Difference]: Finished difference Result 884 states and 2995 transitions. [2025-04-13 18:00:07,328 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 18:00:07,328 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:07,329 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:07,331 INFO L225 Difference]: With dead ends: 884 [2025-04-13 18:00:07,331 INFO L226 Difference]: Without dead ends: 875 [2025-04-13 18:00:07,332 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:00:07,332 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:07,332 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2025-04-13 18:00:07,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 758. [2025-04-13 18:00:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.4491413474240424) internal successors, (2611), 757 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2611 transitions. [2025-04-13 18:00:07,551 INFO L79 Accepts]: Start accepts. Automaton has 758 states and 2611 transitions. Word has length 17 [2025-04-13 18:00:07,551 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:07,551 INFO L485 AbstractCegarLoop]: Abstraction has 758 states and 2611 transitions. [2025-04-13 18:00:07,551 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:07,551 INFO L278 IsEmpty]: Start isEmpty. Operand 758 states and 2611 transitions. [2025-04-13 18:00:07,552 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:07,552 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:07,552 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:07,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2025-04-13 18:00:07,752 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2025-04-13 18:00:07,752 INFO L403 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:07,753 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:07,753 INFO L85 PathProgramCache]: Analyzing trace with hash -154950841, now seen corresponding path program 74 times [2025-04-13 18:00:07,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:07,753 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862207071] [2025-04-13 18:00:07,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:07,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:07,755 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:07,758 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:07,758 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:07,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:07,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:07,801 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862207071] [2025-04-13 18:00:07,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862207071] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:07,801 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377389900] [2025-04-13 18:00:07,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:07,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:07,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:07,803 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:07,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2025-04-13 18:00:07,831 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:07,844 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:07,844 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:07,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:07,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:07,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:07,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:00:07,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377389900] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:07,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:07,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2025-04-13 18:00:07,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667659458] [2025-04-13 18:00:07,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:07,912 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:00:07,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:07,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:00:07,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:07,913 INFO L87 Difference]: Start difference. First operand 758 states and 2611 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:08,388 INFO L93 Difference]: Finished difference Result 804 states and 2737 transitions. [2025-04-13 18:00:08,388 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 18:00:08,388 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:08,388 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:08,390 INFO L225 Difference]: With dead ends: 804 [2025-04-13 18:00:08,390 INFO L226 Difference]: Without dead ends: 793 [2025-04-13 18:00:08,390 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:00:08,391 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:08,391 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:08,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2025-04-13 18:00:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 746. [2025-04-13 18:00:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 3.442953020134228) internal successors, (2565), 745 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 2565 transitions. [2025-04-13 18:00:08,611 INFO L79 Accepts]: Start accepts. Automaton has 746 states and 2565 transitions. Word has length 17 [2025-04-13 18:00:08,611 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:08,611 INFO L485 AbstractCegarLoop]: Abstraction has 746 states and 2565 transitions. [2025-04-13 18:00:08,611 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:08,612 INFO L278 IsEmpty]: Start isEmpty. Operand 746 states and 2565 transitions. [2025-04-13 18:00:08,613 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:08,613 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:08,613 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:08,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2025-04-13 18:00:08,813 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2025-04-13 18:00:08,813 INFO L403 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:08,813 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash 706694252, now seen corresponding path program 75 times [2025-04-13 18:00:08,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:08,814 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176183550] [2025-04-13 18:00:08,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:08,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:08,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 4 equivalence classes. [2025-04-13 18:00:08,822 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:08,822 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:00:08,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:08,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:08,874 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176183550] [2025-04-13 18:00:08,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176183550] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:08,874 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041502896] [2025-04-13 18:00:08,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:08,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:08,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:08,876 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:08,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2025-04-13 18:00:08,907 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 4 equivalence classes. [2025-04-13 18:00:08,923 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:08,924 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:00:08,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:08,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:08,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:08,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:00:09,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041502896] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:09,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:09,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2025-04-13 18:00:09,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710753684] [2025-04-13 18:00:09,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:09,013 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:00:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:09,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:00:09,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:09,013 INFO L87 Difference]: Start difference. First operand 746 states and 2565 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:09,534 INFO L93 Difference]: Finished difference Result 948 states and 3264 transitions. [2025-04-13 18:00:09,534 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:00:09,534 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:09,534 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:09,537 INFO L225 Difference]: With dead ends: 948 [2025-04-13 18:00:09,537 INFO L226 Difference]: Without dead ends: 931 [2025-04-13 18:00:09,537 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2025-04-13 18:00:09,537 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:09,537 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:09,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2025-04-13 18:00:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 828. [2025-04-13 18:00:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 3.47037484885127) internal successors, (2870), 827 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2870 transitions. [2025-04-13 18:00:09,772 INFO L79 Accepts]: Start accepts. Automaton has 828 states and 2870 transitions. Word has length 17 [2025-04-13 18:00:09,772 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:09,772 INFO L485 AbstractCegarLoop]: Abstraction has 828 states and 2870 transitions. [2025-04-13 18:00:09,772 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:09,772 INFO L278 IsEmpty]: Start isEmpty. Operand 828 states and 2870 transitions. [2025-04-13 18:00:09,773 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:09,773 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:09,773 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:09,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2025-04-13 18:00:09,973 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2025-04-13 18:00:09,974 INFO L403 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:09,974 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:09,974 INFO L85 PathProgramCache]: Analyzing trace with hash 43159204, now seen corresponding path program 76 times [2025-04-13 18:00:09,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:09,974 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784620845] [2025-04-13 18:00:09,974 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:09,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:09,977 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:09,979 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:09,979 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:09,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:00:10,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:10,016 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784620845] [2025-04-13 18:00:10,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784620845] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:10,016 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346310586] [2025-04-13 18:00:10,016 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:10,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:10,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:10,017 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:10,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2025-04-13 18:00:10,052 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:10,067 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:10,067 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:10,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:10,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:10,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:10,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:00:10,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346310586] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:10,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:10,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2025-04-13 18:00:10,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210182319] [2025-04-13 18:00:10,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:10,140 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:00:10,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:10,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:00:10,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:00:10,141 INFO L87 Difference]: Start difference. First operand 828 states and 2870 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:10,657 INFO L93 Difference]: Finished difference Result 917 states and 3146 transitions. [2025-04-13 18:00:10,658 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 18:00:10,658 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:10,658 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:10,660 INFO L225 Difference]: With dead ends: 917 [2025-04-13 18:00:10,660 INFO L226 Difference]: Without dead ends: 894 [2025-04-13 18:00:10,661 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:00:10,661 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:10,661 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:10,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2025-04-13 18:00:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 862. [2025-04-13 18:00:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 3.492450638792102) internal successors, (3007), 861 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 3007 transitions. [2025-04-13 18:00:10,902 INFO L79 Accepts]: Start accepts. Automaton has 862 states and 3007 transitions. Word has length 17 [2025-04-13 18:00:10,903 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:10,903 INFO L485 AbstractCegarLoop]: Abstraction has 862 states and 3007 transitions. [2025-04-13 18:00:10,903 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:10,903 INFO L278 IsEmpty]: Start isEmpty. Operand 862 states and 3007 transitions. [2025-04-13 18:00:10,904 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:10,904 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:10,904 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:10,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2025-04-13 18:00:11,104 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2025-04-13 18:00:11,105 INFO L403 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:11,105 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:11,105 INFO L85 PathProgramCache]: Analyzing trace with hash 32658243, now seen corresponding path program 77 times [2025-04-13 18:00:11,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:11,105 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205539533] [2025-04-13 18:00:11,105 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:11,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:11,108 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:11,111 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:11,111 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:11,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:11,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:11,148 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205539533] [2025-04-13 18:00:11,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205539533] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:11,148 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040699720] [2025-04-13 18:00:11,148 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:11,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:11,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:11,150 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:11,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2025-04-13 18:00:11,178 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:11,192 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:11,192 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:11,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:11,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:11,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:11,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:11,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040699720] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:11,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:11,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2025-04-13 18:00:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276768863] [2025-04-13 18:00:11,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:11,267 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:00:11,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:11,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:00:11,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:00:11,268 INFO L87 Difference]: Start difference. First operand 862 states and 3007 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:11,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:11,806 INFO L93 Difference]: Finished difference Result 980 states and 3363 transitions. [2025-04-13 18:00:11,806 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:00:11,807 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:11,807 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:11,809 INFO L225 Difference]: With dead ends: 980 [2025-04-13 18:00:11,809 INFO L226 Difference]: Without dead ends: 961 [2025-04-13 18:00:11,809 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:11,809 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:11,810 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2025-04-13 18:00:12,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 868. [2025-04-13 18:00:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 3.4878892733564015) internal successors, (3024), 867 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 3024 transitions. [2025-04-13 18:00:12,048 INFO L79 Accepts]: Start accepts. Automaton has 868 states and 3024 transitions. Word has length 17 [2025-04-13 18:00:12,048 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:12,048 INFO L485 AbstractCegarLoop]: Abstraction has 868 states and 3024 transitions. [2025-04-13 18:00:12,048 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:12,048 INFO L278 IsEmpty]: Start isEmpty. Operand 868 states and 3024 transitions. [2025-04-13 18:00:12,050 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:12,050 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:12,050 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:12,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2025-04-13 18:00:12,250 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:12,250 INFO L403 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:12,251 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:12,251 INFO L85 PathProgramCache]: Analyzing trace with hash -744491356, now seen corresponding path program 78 times [2025-04-13 18:00:12,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:12,251 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162001400] [2025-04-13 18:00:12,251 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:12,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:12,254 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:12,257 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:12,257 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:12,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:12,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:12,305 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162001400] [2025-04-13 18:00:12,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162001400] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:12,305 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264851195] [2025-04-13 18:00:12,305 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:12,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:12,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:12,309 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:12,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2025-04-13 18:00:12,341 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:12,356 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:12,356 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:12,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:12,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:12,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:12,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:12,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264851195] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:12,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:12,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2025-04-13 18:00:12,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67544390] [2025-04-13 18:00:12,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:12,452 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:00:12,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:12,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:00:12,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:12,452 INFO L87 Difference]: Start difference. First operand 868 states and 3024 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:13,085 INFO L93 Difference]: Finished difference Result 945 states and 3211 transitions. [2025-04-13 18:00:13,085 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:00:13,085 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:13,085 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:13,088 INFO L225 Difference]: With dead ends: 945 [2025-04-13 18:00:13,088 INFO L226 Difference]: Without dead ends: 937 [2025-04-13 18:00:13,089 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:00:13,089 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:13,089 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:13,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2025-04-13 18:00:13,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 836. [2025-04-13 18:00:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 3.465868263473054) internal successors, (2894), 835 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2894 transitions. [2025-04-13 18:00:13,336 INFO L79 Accepts]: Start accepts. Automaton has 836 states and 2894 transitions. Word has length 17 [2025-04-13 18:00:13,336 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:13,336 INFO L485 AbstractCegarLoop]: Abstraction has 836 states and 2894 transitions. [2025-04-13 18:00:13,336 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:13,336 INFO L278 IsEmpty]: Start isEmpty. Operand 836 states and 2894 transitions. [2025-04-13 18:00:13,338 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:13,338 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:13,338 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:13,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2025-04-13 18:00:13,538 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:13,538 INFO L403 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:13,539 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1823553876, now seen corresponding path program 79 times [2025-04-13 18:00:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:13,539 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101488092] [2025-04-13 18:00:13,539 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:13,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:13,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:13,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:13,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:13,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:13,596 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101488092] [2025-04-13 18:00:13,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101488092] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:13,596 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132121866] [2025-04-13 18:00:13,596 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:13,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:13,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:13,599 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:13,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2025-04-13 18:00:13,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:13,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:13,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:13,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:13,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:13,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:13,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:13,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132121866] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:13,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:13,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2025-04-13 18:00:13,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871934762] [2025-04-13 18:00:13,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:13,774 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:00:13,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:13,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:00:13,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:13,775 INFO L87 Difference]: Start difference. First operand 836 states and 2894 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18:00:14,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:14,457 INFO L93 Difference]: Finished difference Result 931 states and 3131 transitions. [2025-04-13 18:00:14,457 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:00:14,457 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 17 [2025-04-13 18:00:14,457 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:14,459 INFO L225 Difference]: With dead ends: 931 [2025-04-13 18:00:14,459 INFO L226 Difference]: Without dead ends: 911 [2025-04-13 18:00:14,460 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:00:14,460 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:14,460 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2025-04-13 18:00:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 836. [2025-04-13 18:00:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 3.461077844311377) internal successors, (2890), 835 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2890 transitions. [2025-04-13 18:00:14,705 INFO L79 Accepts]: Start accepts. Automaton has 836 states and 2890 transitions. Word has length 17 [2025-04-13 18:00:14,705 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:14,705 INFO L485 AbstractCegarLoop]: Abstraction has 836 states and 2890 transitions. [2025-04-13 18:00:14,705 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18:00:14,705 INFO L278 IsEmpty]: Start isEmpty. Operand 836 states and 2890 transitions. [2025-04-13 18:00:14,707 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:14,707 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:14,707 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:14,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2025-04-13 18:00:14,907 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:14,907 INFO L403 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:14,907 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash 664209031, now seen corresponding path program 80 times [2025-04-13 18:00:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:14,908 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396422439] [2025-04-13 18:00:14,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:14,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:14,911 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:14,914 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:14,914 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:14,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:14,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:14,964 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396422439] [2025-04-13 18:00:14,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396422439] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:14,964 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586315531] [2025-04-13 18:00:14,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:14,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:14,966 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:14,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2025-04-13 18:00:14,997 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:15,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:15,016 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:15,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:15,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:15,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:15,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:15,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586315531] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:15,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:15,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2025-04-13 18:00:15,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916825907] [2025-04-13 18:00:15,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:15,116 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:00:15,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:15,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:00:15,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:15,116 INFO L87 Difference]: Start difference. First operand 836 states and 2890 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:15,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:15,882 INFO L93 Difference]: Finished difference Result 1033 states and 3456 transitions. [2025-04-13 18:00:15,882 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:00:15,882 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:15,882 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:15,885 INFO L225 Difference]: With dead ends: 1033 [2025-04-13 18:00:15,885 INFO L226 Difference]: Without dead ends: 1024 [2025-04-13 18:00:15,885 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:00:15,885 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:15,886 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:15,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2025-04-13 18:00:16,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 844. [2025-04-13 18:00:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 3.4424673784104387) internal successors, (2902), 843 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2902 transitions. [2025-04-13 18:00:16,140 INFO L79 Accepts]: Start accepts. Automaton has 844 states and 2902 transitions. Word has length 17 [2025-04-13 18:00:16,140 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:16,140 INFO L485 AbstractCegarLoop]: Abstraction has 844 states and 2902 transitions. [2025-04-13 18:00:16,140 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:16,140 INFO L278 IsEmpty]: Start isEmpty. Operand 844 states and 2902 transitions. [2025-04-13 18:00:16,141 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:16,141 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:16,141 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:16,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2025-04-13 18:00:16,346 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:16,346 INFO L403 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:16,346 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:16,346 INFO L85 PathProgramCache]: Analyzing trace with hash 847655593, now seen corresponding path program 81 times [2025-04-13 18:00:16,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:16,346 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736990167] [2025-04-13 18:00:16,346 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:16,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:16,349 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 4 equivalence classes. [2025-04-13 18:00:16,358 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:16,358 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:00:16,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:16,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:16,409 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736990167] [2025-04-13 18:00:16,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736990167] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:16,409 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851496641] [2025-04-13 18:00:16,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:16,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:16,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:16,411 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:16,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2025-04-13 18:00:16,442 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 4 equivalence classes. [2025-04-13 18:00:16,455 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:16,456 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:00:16,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:16,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:16,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:16,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:00:16,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851496641] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:16,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:16,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2025-04-13 18:00:16,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681696452] [2025-04-13 18:00:16,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:16,533 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:00:16,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:16,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:00:16,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:16,534 INFO L87 Difference]: Start difference. First operand 844 states and 2902 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:17,304 INFO L93 Difference]: Finished difference Result 1100 states and 3764 transitions. [2025-04-13 18:00:17,304 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 18:00:17,304 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:17,304 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:17,308 INFO L225 Difference]: With dead ends: 1100 [2025-04-13 18:00:17,308 INFO L226 Difference]: Without dead ends: 1093 [2025-04-13 18:00:17,308 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:00:17,308 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:17,308 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:00:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2025-04-13 18:00:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 980. [2025-04-13 18:00:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 979 states have (on average 3.495403472931563) internal successors, (3422), 979 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 3422 transitions. [2025-04-13 18:00:17,601 INFO L79 Accepts]: Start accepts. Automaton has 980 states and 3422 transitions. Word has length 17 [2025-04-13 18:00:17,601 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:17,601 INFO L485 AbstractCegarLoop]: Abstraction has 980 states and 3422 transitions. [2025-04-13 18:00:17,602 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:17,602 INFO L278 IsEmpty]: Start isEmpty. Operand 980 states and 3422 transitions. [2025-04-13 18:00:17,603 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:17,603 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:17,603 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:17,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2025-04-13 18:00:17,803 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:17,804 INFO L403 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:17,804 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:17,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1646445753, now seen corresponding path program 82 times [2025-04-13 18:00:17,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:17,804 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004806394] [2025-04-13 18:00:17,804 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:17,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:17,807 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:17,810 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:17,810 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:17,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:00:17,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:17,847 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004806394] [2025-04-13 18:00:17,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004806394] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:17,847 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505913686] [2025-04-13 18:00:17,847 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:17,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:17,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:17,849 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:17,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2025-04-13 18:00:17,883 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:17,897 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:17,897 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:17,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:17,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:17,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:17,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:00:17,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505913686] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:17,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:17,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 13 [2025-04-13 18:00:17,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582930284] [2025-04-13 18:00:17,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:17,955 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:00:17,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:17,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:00:17,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:00:17,955 INFO L87 Difference]: Start difference. First operand 980 states and 3422 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:18,496 INFO L93 Difference]: Finished difference Result 1052 states and 3641 transitions. [2025-04-13 18:00:18,496 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:00:18,496 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:18,496 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:18,499 INFO L225 Difference]: With dead ends: 1052 [2025-04-13 18:00:18,499 INFO L226 Difference]: Without dead ends: 1041 [2025-04-13 18:00:18,499 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:18,499 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:18,499 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2025-04-13 18:00:18,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 952. [2025-04-13 18:00:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 3.4763406940063093) internal successors, (3306), 951 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 3306 transitions. [2025-04-13 18:00:18,776 INFO L79 Accepts]: Start accepts. Automaton has 952 states and 3306 transitions. Word has length 17 [2025-04-13 18:00:18,776 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:18,776 INFO L485 AbstractCegarLoop]: Abstraction has 952 states and 3306 transitions. [2025-04-13 18:00:18,776 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:18,776 INFO L278 IsEmpty]: Start isEmpty. Operand 952 states and 3306 transitions. [2025-04-13 18:00:18,778 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:18,778 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:18,778 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:18,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2025-04-13 18:00:18,978 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2025-04-13 18:00:18,978 INFO L403 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:18,979 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:18,979 INFO L85 PathProgramCache]: Analyzing trace with hash 64167555, now seen corresponding path program 83 times [2025-04-13 18:00:18,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:18,979 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429157626] [2025-04-13 18:00:18,979 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:18,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:18,982 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:18,985 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:18,985 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:18,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:19,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:19,027 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429157626] [2025-04-13 18:00:19,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429157626] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:19,027 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243451274] [2025-04-13 18:00:19,027 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:19,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:19,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:19,029 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:19,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2025-04-13 18:00:19,058 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:19,071 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:19,071 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:19,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:19,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:19,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:19,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243451274] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:19,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:19,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2025-04-13 18:00:19,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90431120] [2025-04-13 18:00:19,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:19,129 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-04-13 18:00:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:19,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-04-13 18:00:19,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:00:19,129 INFO L87 Difference]: Start difference. First operand 952 states and 3306 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:19,689 INFO L93 Difference]: Finished difference Result 1086 states and 3742 transitions. [2025-04-13 18:00:19,689 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:00:19,689 INFO L79 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:19,690 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:19,692 INFO L225 Difference]: With dead ends: 1086 [2025-04-13 18:00:19,692 INFO L226 Difference]: Without dead ends: 1071 [2025-04-13 18:00:19,692 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:19,692 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:19,692 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:19,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2025-04-13 18:00:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 950. [2025-04-13 18:00:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 949 states have (on average 3.469968387776607) internal successors, (3293), 949 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 3293 transitions. [2025-04-13 18:00:19,965 INFO L79 Accepts]: Start accepts. Automaton has 950 states and 3293 transitions. Word has length 17 [2025-04-13 18:00:19,965 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:19,965 INFO L485 AbstractCegarLoop]: Abstraction has 950 states and 3293 transitions. [2025-04-13 18:00:19,965 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:19,965 INFO L278 IsEmpty]: Start isEmpty. Operand 950 states and 3293 transitions. [2025-04-13 18:00:19,967 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:19,967 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:19,967 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:19,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2025-04-13 18:00:20,167 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2025-04-13 18:00:20,167 INFO L403 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:20,168 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1553572551, now seen corresponding path program 84 times [2025-04-13 18:00:20,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:20,168 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494638174] [2025-04-13 18:00:20,168 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:20,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:20,171 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:20,174 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:20,174 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:20,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:20,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:20,235 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494638174] [2025-04-13 18:00:20,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494638174] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:20,235 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449619192] [2025-04-13 18:00:20,235 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:20,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:20,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:20,237 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:20,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2025-04-13 18:00:20,268 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:20,284 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:20,284 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:20,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:20,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:20,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:20,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:20,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449619192] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:20,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:20,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 18:00:20,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146398579] [2025-04-13 18:00:20,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:20,414 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:00:20,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:20,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:00:20,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:00:20,414 INFO L87 Difference]: Start difference. First operand 950 states and 3293 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:21,125 INFO L93 Difference]: Finished difference Result 1116 states and 3817 transitions. [2025-04-13 18:00:21,125 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 18:00:21,125 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:21,125 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:21,128 INFO L225 Difference]: With dead ends: 1116 [2025-04-13 18:00:21,128 INFO L226 Difference]: Without dead ends: 1097 [2025-04-13 18:00:21,128 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:00:21,128 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:21,129 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:21,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2025-04-13 18:00:21,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 976. [2025-04-13 18:00:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 3.478974358974359) internal successors, (3392), 975 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 3392 transitions. [2025-04-13 18:00:21,421 INFO L79 Accepts]: Start accepts. Automaton has 976 states and 3392 transitions. Word has length 17 [2025-04-13 18:00:21,421 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:21,421 INFO L485 AbstractCegarLoop]: Abstraction has 976 states and 3392 transitions. [2025-04-13 18:00:21,421 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:21,421 INFO L278 IsEmpty]: Start isEmpty. Operand 976 states and 3392 transitions. [2025-04-13 18:00:21,422 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:21,422 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:21,422 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:21,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2025-04-13 18:00:21,622 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:21,623 INFO L403 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:21,623 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:21,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1063228538, now seen corresponding path program 85 times [2025-04-13 18:00:21,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:21,623 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026359358] [2025-04-13 18:00:21,623 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:21,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:21,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:21,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:21,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:21,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:21,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:21,676 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026359358] [2025-04-13 18:00:21,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026359358] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:21,676 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914560853] [2025-04-13 18:00:21,676 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:21,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:21,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:21,678 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:21,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2025-04-13 18:00:21,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:21,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:21,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:21,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:21,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:21,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:21,766 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:21,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914560853] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:21,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:21,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-04-13 18:00:21,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511893427] [2025-04-13 18:00:21,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:21,806 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:00:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:21,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:00:21,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:00:21,806 INFO L87 Difference]: Start difference. First operand 976 states and 3392 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:22,595 INFO L93 Difference]: Finished difference Result 1088 states and 3695 transitions. [2025-04-13 18:00:22,596 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 18:00:22,596 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:22,596 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:22,598 INFO L225 Difference]: With dead ends: 1088 [2025-04-13 18:00:22,598 INFO L226 Difference]: Without dead ends: 1077 [2025-04-13 18:00:22,598 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=451, Invalid=1355, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:00:22,599 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:22,599 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:22,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2025-04-13 18:00:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1002. [2025-04-13 18:00:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 1001 states have (on average 3.4835164835164836) internal successors, (3487), 1001 states have internal predecessors, (3487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 3487 transitions. [2025-04-13 18:00:22,901 INFO L79 Accepts]: Start accepts. Automaton has 1002 states and 3487 transitions. Word has length 17 [2025-04-13 18:00:22,901 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:22,901 INFO L485 AbstractCegarLoop]: Abstraction has 1002 states and 3487 transitions. [2025-04-13 18:00:22,901 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 20 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:22,901 INFO L278 IsEmpty]: Start isEmpty. Operand 1002 states and 3487 transitions. [2025-04-13 18:00:22,903 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:22,903 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:22,903 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:22,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2025-04-13 18:00:23,103 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:23,103 INFO L403 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:23,104 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash -783318078, now seen corresponding path program 86 times [2025-04-13 18:00:23,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:23,104 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774558199] [2025-04-13 18:00:23,104 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:23,107 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:23,110 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:23,111 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:23,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:23,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:23,153 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774558199] [2025-04-13 18:00:23,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774558199] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:23,153 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640679168] [2025-04-13 18:00:23,153 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:23,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:23,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:23,155 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:23,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2025-04-13 18:00:23,184 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:23,197 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:23,197 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:23,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:23,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:23,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:23,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:23,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640679168] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:23,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:23,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-04-13 18:00:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982797744] [2025-04-13 18:00:23,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:23,261 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:00:23,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:23,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:00:23,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:23,262 INFO L87 Difference]: Start difference. First operand 1002 states and 3487 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:23,940 INFO L93 Difference]: Finished difference Result 1145 states and 3890 transitions. [2025-04-13 18:00:23,941 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 18:00:23,941 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:23,941 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:23,943 INFO L225 Difference]: With dead ends: 1145 [2025-04-13 18:00:23,943 INFO L226 Difference]: Without dead ends: 1122 [2025-04-13 18:00:23,944 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:00:23,944 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:23,944 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2025-04-13 18:00:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1010. [2025-04-13 18:00:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 1009 states have (on average 3.4856293359762143) internal successors, (3517), 1009 states have internal predecessors, (3517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 3517 transitions. [2025-04-13 18:00:24,252 INFO L79 Accepts]: Start accepts. Automaton has 1010 states and 3517 transitions. Word has length 17 [2025-04-13 18:00:24,253 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:24,253 INFO L485 AbstractCegarLoop]: Abstraction has 1010 states and 3517 transitions. [2025-04-13 18:00:24,253 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:24,253 INFO L278 IsEmpty]: Start isEmpty. Operand 1010 states and 3517 transitions. [2025-04-13 18:00:24,254 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:24,254 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:24,254 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:24,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2025-04-13 18:00:24,455 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:24,455 INFO L403 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:24,455 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1704444829, now seen corresponding path program 87 times [2025-04-13 18:00:24,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:24,455 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624286266] [2025-04-13 18:00:24,455 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:24,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:24,458 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:24,464 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:24,464 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:00:24,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:24,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:24,512 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624286266] [2025-04-13 18:00:24,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624286266] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:24,512 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543130194] [2025-04-13 18:00:24,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:24,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:24,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:24,514 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:24,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2025-04-13 18:00:24,549 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:24,565 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:24,565 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:00:24,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:24,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:24,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:24,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:24,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543130194] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:24,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:24,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-04-13 18:00:24,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758947024] [2025-04-13 18:00:24,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:24,660 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:00:24,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:24,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:00:24,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:24,660 INFO L87 Difference]: Start difference. First operand 1010 states and 3517 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:00:25,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:25,534 INFO L93 Difference]: Finished difference Result 1219 states and 4140 transitions. [2025-04-13 18:00:25,534 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:00:25,534 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 17 [2025-04-13 18:00:25,535 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:25,538 INFO L225 Difference]: With dead ends: 1219 [2025-04-13 18:00:25,539 INFO L226 Difference]: Without dead ends: 1210 [2025-04-13 18:00:25,539 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:00:25,539 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:25,539 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:25,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2025-04-13 18:00:25,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1016. [2025-04-13 18:00:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 3.4857142857142858) internal successors, (3538), 1015 states have internal predecessors, (3538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 3538 transitions. [2025-04-13 18:00:25,867 INFO L79 Accepts]: Start accepts. Automaton has 1016 states and 3538 transitions. Word has length 17 [2025-04-13 18:00:25,867 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:25,868 INFO L485 AbstractCegarLoop]: Abstraction has 1016 states and 3538 transitions. [2025-04-13 18:00:25,868 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:00:25,868 INFO L278 IsEmpty]: Start isEmpty. Operand 1016 states and 3538 transitions. [2025-04-13 18:00:25,869 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:25,869 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:25,869 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:25,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2025-04-13 18:00:26,069 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2025-04-13 18:00:26,070 INFO L403 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:26,070 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash 916794269, now seen corresponding path program 88 times [2025-04-13 18:00:26,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:26,070 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921174558] [2025-04-13 18:00:26,070 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:26,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:26,073 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:26,076 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:26,076 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:26,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:26,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:26,111 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921174558] [2025-04-13 18:00:26,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921174558] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:26,111 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382633849] [2025-04-13 18:00:26,111 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:26,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:26,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:26,113 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:26,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2025-04-13 18:00:26,142 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:26,156 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:26,156 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:26,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:26,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:26,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:26,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:26,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382633849] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:26,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:26,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2025-04-13 18:00:26,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787634414] [2025-04-13 18:00:26,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:26,212 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:00:26,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:26,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:00:26,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:00:26,213 INFO L87 Difference]: Start difference. First operand 1016 states and 3538 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:26,840 INFO L93 Difference]: Finished difference Result 1155 states and 3983 transitions. [2025-04-13 18:00:26,840 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:00:26,840 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:26,840 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:26,843 INFO L225 Difference]: With dead ends: 1155 [2025-04-13 18:00:26,843 INFO L226 Difference]: Without dead ends: 1142 [2025-04-13 18:00:26,843 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:00:26,843 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:26,843 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2025-04-13 18:00:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1006. [2025-04-13 18:00:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 1005 states have (on average 3.4796019900497512) internal successors, (3497), 1005 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 3497 transitions. [2025-04-13 18:00:27,148 INFO L79 Accepts]: Start accepts. Automaton has 1006 states and 3497 transitions. Word has length 17 [2025-04-13 18:00:27,148 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:27,148 INFO L485 AbstractCegarLoop]: Abstraction has 1006 states and 3497 transitions. [2025-04-13 18:00:27,148 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:27,148 INFO L278 IsEmpty]: Start isEmpty. Operand 1006 states and 3497 transitions. [2025-04-13 18:00:27,150 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:27,150 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:27,150 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:27,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2025-04-13 18:00:27,350 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2025-04-13 18:00:27,350 INFO L403 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:27,350 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1778439362, now seen corresponding path program 89 times [2025-04-13 18:00:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:27,351 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740314964] [2025-04-13 18:00:27,351 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:27,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:27,353 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:27,357 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:27,357 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:27,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:27,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:27,391 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740314964] [2025-04-13 18:00:27,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740314964] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:27,391 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608783024] [2025-04-13 18:00:27,391 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:27,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:27,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:27,393 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:27,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2025-04-13 18:00:27,424 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:27,438 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:27,438 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:27,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:27,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:27,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:27,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:27,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608783024] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:27,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:27,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2025-04-13 18:00:27,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653414272] [2025-04-13 18:00:27,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:27,493 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:00:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:27,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:00:27,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:00:27,494 INFO L87 Difference]: Start difference. First operand 1006 states and 3497 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:28,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:28,213 INFO L93 Difference]: Finished difference Result 1136 states and 3915 transitions. [2025-04-13 18:00:28,213 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:00:28,214 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:28,214 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:28,216 INFO L225 Difference]: With dead ends: 1136 [2025-04-13 18:00:28,217 INFO L226 Difference]: Without dead ends: 1125 [2025-04-13 18:00:28,217 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=225, Invalid=375, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:00:28,217 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:28,217 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:28,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2025-04-13 18:00:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1014. [2025-04-13 18:00:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1013 states have (on average 3.4777887462981245) internal successors, (3523), 1013 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 3523 transitions. [2025-04-13 18:00:28,533 INFO L79 Accepts]: Start accepts. Automaton has 1014 states and 3523 transitions. Word has length 17 [2025-04-13 18:00:28,533 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:28,533 INFO L485 AbstractCegarLoop]: Abstraction has 1014 states and 3523 transitions. [2025-04-13 18:00:28,533 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:28,533 INFO L278 IsEmpty]: Start isEmpty. Operand 1014 states and 3523 transitions. [2025-04-13 18:00:28,535 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:28,535 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:28,535 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:28,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2025-04-13 18:00:28,735 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2025-04-13 18:00:28,735 INFO L403 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:28,735 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash 566547775, now seen corresponding path program 90 times [2025-04-13 18:00:28,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:28,736 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997382976] [2025-04-13 18:00:28,736 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:28,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:28,738 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:28,741 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:28,741 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:00:28,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:28,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:28,784 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997382976] [2025-04-13 18:00:28,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997382976] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:28,784 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995697090] [2025-04-13 18:00:28,784 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:28,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:28,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:28,786 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:28,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2025-04-13 18:00:28,816 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:28,829 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:28,829 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:00:28,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:28,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:28,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:28,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:28,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995697090] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:28,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:28,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2025-04-13 18:00:28,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049327813] [2025-04-13 18:00:28,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:28,900 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:00:28,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:28,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:00:28,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:00:28,901 INFO L87 Difference]: Start difference. First operand 1014 states and 3523 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:29,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:29,570 INFO L93 Difference]: Finished difference Result 1155 states and 3949 transitions. [2025-04-13 18:00:29,570 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 18:00:29,570 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:29,570 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:29,573 INFO L225 Difference]: With dead ends: 1155 [2025-04-13 18:00:29,573 INFO L226 Difference]: Without dead ends: 1140 [2025-04-13 18:00:29,574 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:00:29,574 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:29,574 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:29,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2025-04-13 18:00:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1014. [2025-04-13 18:00:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1013 states have (on average 3.4738400789733466) internal successors, (3519), 1013 states have internal predecessors, (3519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 3519 transitions. [2025-04-13 18:00:29,893 INFO L79 Accepts]: Start accepts. Automaton has 1014 states and 3519 transitions. Word has length 17 [2025-04-13 18:00:29,893 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:29,893 INFO L485 AbstractCegarLoop]: Abstraction has 1014 states and 3519 transitions. [2025-04-13 18:00:29,893 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:29,893 INFO L278 IsEmpty]: Start isEmpty. Operand 1014 states and 3519 transitions. [2025-04-13 18:00:29,895 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:29,895 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:29,895 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:29,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2025-04-13 18:00:30,095 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2025-04-13 18:00:30,095 INFO L403 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:30,096 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash -210601824, now seen corresponding path program 91 times [2025-04-13 18:00:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:30,096 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248089916] [2025-04-13 18:00:30,096 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:30,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:30,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:30,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:30,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:30,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:30,146 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248089916] [2025-04-13 18:00:30,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248089916] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:30,146 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860110891] [2025-04-13 18:00:30,146 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:30,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:30,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:30,148 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:30,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2025-04-13 18:00:30,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:30,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:30,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:30,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:30,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:30,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:30,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:30,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:30,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860110891] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:30,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:30,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2025-04-13 18:00:30,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594332352] [2025-04-13 18:00:30,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:30,261 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:00:30,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:30,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:00:30,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:00:30,262 INFO L87 Difference]: Start difference. First operand 1014 states and 3519 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 18:00:31,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:31,004 INFO L93 Difference]: Finished difference Result 1127 states and 3812 transitions. [2025-04-13 18:00:31,004 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:00:31,004 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 17 [2025-04-13 18:00:31,004 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:31,007 INFO L225 Difference]: With dead ends: 1127 [2025-04-13 18:00:31,007 INFO L226 Difference]: Without dead ends: 1119 [2025-04-13 18:00:31,008 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=272, Invalid=658, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:00:31,008 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:31,008 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:31,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2025-04-13 18:00:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1006. [2025-04-13 18:00:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 1005 states have (on average 3.4776119402985075) internal successors, (3495), 1005 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 3495 transitions. [2025-04-13 18:00:31,321 INFO L79 Accepts]: Start accepts. Automaton has 1006 states and 3495 transitions. Word has length 17 [2025-04-13 18:00:31,321 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:31,321 INFO L485 AbstractCegarLoop]: Abstraction has 1006 states and 3495 transitions. [2025-04-13 18:00:31,321 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 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 18:00:31,322 INFO L278 IsEmpty]: Start isEmpty. Operand 1006 states and 3495 transitions. [2025-04-13 18:00:31,323 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:31,323 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:31,323 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:31,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2025-04-13 18:00:31,523 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:31,524 INFO L403 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:31,524 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1114904314, now seen corresponding path program 92 times [2025-04-13 18:00:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:31,524 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949210710] [2025-04-13 18:00:31,524 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:31,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:31,530 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:31,530 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:31,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:31,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:31,582 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949210710] [2025-04-13 18:00:31,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949210710] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:31,582 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255089004] [2025-04-13 18:00:31,582 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:31,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:31,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:31,584 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:31,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2025-04-13 18:00:31,616 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:31,632 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:31,632 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:31,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:31,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:31,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:31,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255089004] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:31,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:31,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2025-04-13 18:00:31,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025948015] [2025-04-13 18:00:31,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:31,704 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:00:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:31,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:00:31,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:31,704 INFO L87 Difference]: Start difference. First operand 1006 states and 3495 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:00:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:32,326 INFO L93 Difference]: Finished difference Result 1078 states and 3711 transitions. [2025-04-13 18:00:32,326 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:00:32,327 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 17 [2025-04-13 18:00:32,327 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:32,330 INFO L225 Difference]: With dead ends: 1078 [2025-04-13 18:00:32,330 INFO L226 Difference]: Without dead ends: 1064 [2025-04-13 18:00:32,330 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:00:32,330 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:32,330 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2025-04-13 18:00:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1024. [2025-04-13 18:00:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1023 states have (on average 3.4760508308895406) internal successors, (3556), 1023 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3556 transitions. [2025-04-13 18:00:32,654 INFO L79 Accepts]: Start accepts. Automaton has 1024 states and 3556 transitions. Word has length 17 [2025-04-13 18:00:32,654 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:32,654 INFO L485 AbstractCegarLoop]: Abstraction has 1024 states and 3556 transitions. [2025-04-13 18:00:32,654 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:00:32,654 INFO L278 IsEmpty]: Start isEmpty. Operand 1024 states and 3556 transitions. [2025-04-13 18:00:32,656 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:32,656 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:32,656 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:32,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2025-04-13 18:00:32,856 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2025-04-13 18:00:32,857 INFO L403 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:32,857 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1887891391, now seen corresponding path program 93 times [2025-04-13 18:00:32,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:32,857 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113829829] [2025-04-13 18:00:32,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:32,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:32,860 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:32,865 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:32,865 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:00:32,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:32,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:32,908 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113829829] [2025-04-13 18:00:32,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113829829] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:32,908 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39303278] [2025-04-13 18:00:32,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:32,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:32,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:32,910 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:32,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2025-04-13 18:00:32,939 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:32,952 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:32,953 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:00:32,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:32,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:32,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:32,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:33,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39303278] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:33,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:33,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2025-04-13 18:00:33,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662244948] [2025-04-13 18:00:33,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:33,023 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:00:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:33,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:00:33,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:33,024 INFO L87 Difference]: Start difference. First operand 1024 states and 3556 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:33,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:33,913 INFO L93 Difference]: Finished difference Result 1315 states and 4531 transitions. [2025-04-13 18:00:33,913 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:00:33,913 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:33,913 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:33,917 INFO L225 Difference]: With dead ends: 1315 [2025-04-13 18:00:33,917 INFO L226 Difference]: Without dead ends: 1308 [2025-04-13 18:00:33,917 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:00:33,917 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:33,917 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:33,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2025-04-13 18:00:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1096. [2025-04-13 18:00:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1096 states, 1095 states have (on average 3.508675799086758) internal successors, (3842), 1095 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 3842 transitions. [2025-04-13 18:00:34,262 INFO L79 Accepts]: Start accepts. Automaton has 1096 states and 3842 transitions. Word has length 17 [2025-04-13 18:00:34,262 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:34,262 INFO L485 AbstractCegarLoop]: Abstraction has 1096 states and 3842 transitions. [2025-04-13 18:00:34,262 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:34,262 INFO L278 IsEmpty]: Start isEmpty. Operand 1096 states and 3842 transitions. [2025-04-13 18:00:34,264 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:34,264 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:34,264 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:34,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2025-04-13 18:00:34,464 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:34,464 INFO L403 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:34,465 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash -606209955, now seen corresponding path program 94 times [2025-04-13 18:00:34,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:34,465 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458198254] [2025-04-13 18:00:34,465 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:34,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:34,468 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:34,470 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:34,470 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:34,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:34,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:34,504 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458198254] [2025-04-13 18:00:34,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458198254] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:34,505 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050852942] [2025-04-13 18:00:34,505 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:34,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:34,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:34,506 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:34,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2025-04-13 18:00:34,536 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:34,549 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:34,549 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:34,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:34,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:34,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:34,586 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:34,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050852942] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:34,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:34,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2025-04-13 18:00:34,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400491721] [2025-04-13 18:00:34,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:34,605 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:00:34,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:34,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:00:34,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:00:34,605 INFO L87 Difference]: Start difference. First operand 1096 states and 3842 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:35,325 INFO L93 Difference]: Finished difference Result 1259 states and 4393 transitions. [2025-04-13 18:00:35,325 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 18:00:35,325 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:35,325 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:35,328 INFO L225 Difference]: With dead ends: 1259 [2025-04-13 18:00:35,329 INFO L226 Difference]: Without dead ends: 1248 [2025-04-13 18:00:35,329 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:00:35,329 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:35,329 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2025-04-13 18:00:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1078. [2025-04-13 18:00:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 3.488393686165274) internal successors, (3757), 1077 states have internal predecessors, (3757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:35,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 3757 transitions. [2025-04-13 18:00:35,676 INFO L79 Accepts]: Start accepts. Automaton has 1078 states and 3757 transitions. Word has length 17 [2025-04-13 18:00:35,676 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:35,676 INFO L485 AbstractCegarLoop]: Abstraction has 1078 states and 3757 transitions. [2025-04-13 18:00:35,676 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:35,676 INFO L278 IsEmpty]: Start isEmpty. Operand 1078 states and 3757 transitions. [2025-04-13 18:00:35,678 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:35,678 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:35,678 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:35,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2025-04-13 18:00:35,878 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:35,878 INFO L403 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:35,879 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:35,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1104403353, now seen corresponding path program 95 times [2025-04-13 18:00:35,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:35,879 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592637616] [2025-04-13 18:00:35,879 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:35,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:35,882 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:35,885 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:35,885 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:35,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:35,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:35,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:35,925 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592637616] [2025-04-13 18:00:35,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592637616] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:35,926 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612900711] [2025-04-13 18:00:35,926 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:35,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:35,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:35,928 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:35,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2025-04-13 18:00:35,959 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:35,972 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:35,972 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:35,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:35,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:35,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:36,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:00:36,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612900711] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:36,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:36,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 13 [2025-04-13 18:00:36,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73763644] [2025-04-13 18:00:36,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:36,032 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:00:36,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:36,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:00:36,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:00:36,032 INFO L87 Difference]: Start difference. First operand 1078 states and 3757 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:36,801 INFO L93 Difference]: Finished difference Result 1309 states and 4550 transitions. [2025-04-13 18:00:36,801 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 18:00:36,801 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:36,801 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:36,804 INFO L225 Difference]: With dead ends: 1309 [2025-04-13 18:00:36,805 INFO L226 Difference]: Without dead ends: 1294 [2025-04-13 18:00:36,805 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:36,805 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:36,805 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:36,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2025-04-13 18:00:37,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1082. [2025-04-13 18:00:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 1081 states have (on average 3.486586493987049) internal successors, (3769), 1081 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 3769 transitions. [2025-04-13 18:00:37,151 INFO L79 Accepts]: Start accepts. Automaton has 1082 states and 3769 transitions. Word has length 17 [2025-04-13 18:00:37,151 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:37,151 INFO L485 AbstractCegarLoop]: Abstraction has 1082 states and 3769 transitions. [2025-04-13 18:00:37,151 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:37,151 INFO L278 IsEmpty]: Start isEmpty. Operand 1082 states and 3769 transitions. [2025-04-13 18:00:37,153 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:37,153 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:37,153 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:37,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2025-04-13 18:00:37,353 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:37,353 INFO L403 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:37,354 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:37,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1701158947, now seen corresponding path program 96 times [2025-04-13 18:00:37,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:37,354 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823258899] [2025-04-13 18:00:37,354 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:37,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:37,356 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:37,360 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:37,360 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:37,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:37,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:37,412 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823258899] [2025-04-13 18:00:37,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823258899] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:37,413 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743147967] [2025-04-13 18:00:37,413 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:37,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:37,414 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:37,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2025-04-13 18:00:37,445 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:37,461 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:37,461 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:37,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:37,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:37,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:37,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:37,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743147967] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:37,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:37,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 18:00:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840459612] [2025-04-13 18:00:37,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:37,552 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:00:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:37,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:00:37,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:00:37,553 INFO L87 Difference]: Start difference. First operand 1082 states and 3769 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:38,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:38,337 INFO L93 Difference]: Finished difference Result 1297 states and 4464 transitions. [2025-04-13 18:00:38,338 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:00:38,339 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:38,339 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:38,342 INFO L225 Difference]: With dead ends: 1297 [2025-04-13 18:00:38,342 INFO L226 Difference]: Without dead ends: 1284 [2025-04-13 18:00:38,342 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:00:38,342 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:38,342 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2025-04-13 18:00:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1106. [2025-04-13 18:00:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 3.5031674208144796) internal successors, (3871), 1105 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 3871 transitions. [2025-04-13 18:00:38,688 INFO L79 Accepts]: Start accepts. Automaton has 1106 states and 3871 transitions. Word has length 17 [2025-04-13 18:00:38,688 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:38,688 INFO L485 AbstractCegarLoop]: Abstraction has 1106 states and 3871 transitions. [2025-04-13 18:00:38,688 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:38,688 INFO L278 IsEmpty]: Start isEmpty. Operand 1106 states and 3871 transitions. [2025-04-13 18:00:38,690 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:38,690 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:38,690 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:38,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2025-04-13 18:00:38,890 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2025-04-13 18:00:38,891 INFO L403 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:38,891 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash -22992740, now seen corresponding path program 97 times [2025-04-13 18:00:38,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:38,891 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263786951] [2025-04-13 18:00:38,891 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:38,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:38,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:38,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:38,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:38,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:38,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:38,946 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263786951] [2025-04-13 18:00:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263786951] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:38,946 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378743407] [2025-04-13 18:00:38,946 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:38,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:38,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:38,948 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:38,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2025-04-13 18:00:38,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:38,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:38,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:38,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:38,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:38,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:39,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378743407] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:39,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:39,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-04-13 18:00:39,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846660638] [2025-04-13 18:00:39,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:39,061 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:00:39,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:39,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:00:39,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:00:39,061 INFO L87 Difference]: Start difference. First operand 1106 states and 3871 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:39,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:39,894 INFO L93 Difference]: Finished difference Result 1223 states and 4174 transitions. [2025-04-13 18:00:39,895 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:00:39,895 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:39,895 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:39,898 INFO L225 Difference]: With dead ends: 1223 [2025-04-13 18:00:39,898 INFO L226 Difference]: Without dead ends: 1215 [2025-04-13 18:00:39,898 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 18:00:39,898 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:39,898 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2025-04-13 18:00:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1104. [2025-04-13 18:00:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1103 states have (on average 3.499546690843155) internal successors, (3860), 1103 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 3860 transitions. [2025-04-13 18:00:40,247 INFO L79 Accepts]: Start accepts. Automaton has 1104 states and 3860 transitions. Word has length 17 [2025-04-13 18:00:40,247 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:40,247 INFO L485 AbstractCegarLoop]: Abstraction has 1104 states and 3860 transitions. [2025-04-13 18:00:40,247 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:40,248 INFO L278 IsEmpty]: Start isEmpty. Operand 1104 states and 3860 transitions. [2025-04-13 18:00:40,249 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:40,249 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:40,249 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:40,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2025-04-13 18:00:40,449 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:40,449 INFO L403 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:40,450 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:40,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1702649636, now seen corresponding path program 98 times [2025-04-13 18:00:40,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:40,450 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402999374] [2025-04-13 18:00:40,450 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:40,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:40,452 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:40,455 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:40,456 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:40,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:40,497 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402999374] [2025-04-13 18:00:40,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402999374] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:40,497 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068086821] [2025-04-13 18:00:40,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:40,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:40,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:40,499 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:40,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2025-04-13 18:00:40,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:40,540 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:40,540 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:40,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:40,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:40,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:40,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:40,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068086821] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:40,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:40,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-04-13 18:00:40,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347244751] [2025-04-13 18:00:40,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:40,597 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:00:40,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:40,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:00:40,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:00:40,598 INFO L87 Difference]: Start difference. First operand 1104 states and 3860 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:41,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:41,306 INFO L93 Difference]: Finished difference Result 1189 states and 4107 transitions. [2025-04-13 18:00:41,307 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:00:41,307 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:41,307 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:41,310 INFO L225 Difference]: With dead ends: 1189 [2025-04-13 18:00:41,310 INFO L226 Difference]: Without dead ends: 1178 [2025-04-13 18:00:41,310 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:00:41,310 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:41,310 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2025-04-13 18:00:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1110. [2025-04-13 18:00:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 3.501352569882777) internal successors, (3883), 1109 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 3883 transitions. [2025-04-13 18:00:41,662 INFO L79 Accepts]: Start accepts. Automaton has 1110 states and 3883 transitions. Word has length 17 [2025-04-13 18:00:41,662 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:41,662 INFO L485 AbstractCegarLoop]: Abstraction has 1110 states and 3883 transitions. [2025-04-13 18:00:41,662 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:41,662 INFO L278 IsEmpty]: Start isEmpty. Operand 1110 states and 3883 transitions. [2025-04-13 18:00:41,663 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:41,663 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:41,663 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:41,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2025-04-13 18:00:41,864 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:41,864 INFO L403 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:41,864 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1819330583, now seen corresponding path program 99 times [2025-04-13 18:00:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:41,864 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473648057] [2025-04-13 18:00:41,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:41,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:41,867 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:41,872 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:41,872 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:00:41,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:41,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:41,914 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473648057] [2025-04-13 18:00:41,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473648057] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:41,914 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294459792] [2025-04-13 18:00:41,915 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:41,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:41,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:41,917 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:41,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2025-04-13 18:00:41,946 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:41,960 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:41,960 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:00:41,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:41,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:41,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:41,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:42,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294459792] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:42,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:42,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-04-13 18:00:42,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674419102] [2025-04-13 18:00:42,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:42,023 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:00:42,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:42,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:00:42,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:00:42,023 INFO L87 Difference]: Start difference. First operand 1110 states and 3883 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:43,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:43,003 INFO L93 Difference]: Finished difference Result 1445 states and 4960 transitions. [2025-04-13 18:00:43,003 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:00:43,003 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:43,003 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:43,007 INFO L225 Difference]: With dead ends: 1445 [2025-04-13 18:00:43,007 INFO L226 Difference]: Without dead ends: 1438 [2025-04-13 18:00:43,007 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:00:43,007 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:43,007 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:43,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2025-04-13 18:00:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1130. [2025-04-13 18:00:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 3.511957484499557) internal successors, (3965), 1129 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 3965 transitions. [2025-04-13 18:00:43,370 INFO L79 Accepts]: Start accepts. Automaton has 1130 states and 3965 transitions. Word has length 17 [2025-04-13 18:00:43,370 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:43,370 INFO L485 AbstractCegarLoop]: Abstraction has 1130 states and 3965 transitions. [2025-04-13 18:00:43,370 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:43,370 INFO L278 IsEmpty]: Start isEmpty. Operand 1130 states and 3965 transitions. [2025-04-13 18:00:43,371 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:43,372 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:43,372 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:43,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2025-04-13 18:00:43,572 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2025-04-13 18:00:43,572 INFO L403 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:43,572 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash -18464633, now seen corresponding path program 100 times [2025-04-13 18:00:43,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:43,573 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115445641] [2025-04-13 18:00:43,573 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:43,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:43,576 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:43,578 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:43,578 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:43,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:43,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:43,614 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115445641] [2025-04-13 18:00:43,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115445641] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:43,614 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113082014] [2025-04-13 18:00:43,614 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:43,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:43,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:43,616 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:43,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2025-04-13 18:00:43,645 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:43,658 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:43,658 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:43,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:43,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:43,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:43,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:43,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113082014] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:43,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:43,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-04-13 18:00:43,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293322885] [2025-04-13 18:00:43,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:43,707 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:00:43,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:43,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:00:43,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:00:43,707 INFO L87 Difference]: Start difference. First operand 1130 states and 3965 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:44,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:44,519 INFO L93 Difference]: Finished difference Result 1390 states and 4830 transitions. [2025-04-13 18:00:44,519 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:00:44,519 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:44,519 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:44,522 INFO L225 Difference]: With dead ends: 1390 [2025-04-13 18:00:44,522 INFO L226 Difference]: Without dead ends: 1381 [2025-04-13 18:00:44,522 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:00:44,522 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:44,522 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:44,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2025-04-13 18:00:44,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1122. [2025-04-13 18:00:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.5049063336306867) internal successors, (3929), 1121 states have internal predecessors, (3929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:44,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 3929 transitions. [2025-04-13 18:00:44,877 INFO L79 Accepts]: Start accepts. Automaton has 1122 states and 3929 transitions. Word has length 17 [2025-04-13 18:00:44,877 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:44,877 INFO L485 AbstractCegarLoop]: Abstraction has 1122 states and 3929 transitions. [2025-04-13 18:00:44,877 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:44,877 INFO L278 IsEmpty]: Start isEmpty. Operand 1122 states and 3929 transitions. [2025-04-13 18:00:44,879 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:44,879 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:44,879 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:44,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2025-04-13 18:00:45,079 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2025-04-13 18:00:45,079 INFO L403 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:45,079 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:45,080 INFO L85 PathProgramCache]: Analyzing trace with hash 843180460, now seen corresponding path program 101 times [2025-04-13 18:00:45,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:45,080 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152173705] [2025-04-13 18:00:45,080 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:45,082 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:45,085 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:45,085 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:45,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:45,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:45,121 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152173705] [2025-04-13 18:00:45,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152173705] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:45,122 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940468751] [2025-04-13 18:00:45,122 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:45,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:45,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:45,123 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:45,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2025-04-13 18:00:45,152 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:45,166 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:45,166 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:45,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:45,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:45,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:45,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:45,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940468751] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:45,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:45,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-04-13 18:00:45,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817970748] [2025-04-13 18:00:45,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:45,231 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:00:45,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:45,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:00:45,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:00:45,232 INFO L87 Difference]: Start difference. First operand 1122 states and 3929 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:46,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:46,012 INFO L93 Difference]: Finished difference Result 1234 states and 4258 transitions. [2025-04-13 18:00:46,013 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:00:46,013 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:46,013 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:46,016 INFO L225 Difference]: With dead ends: 1234 [2025-04-13 18:00:46,016 INFO L226 Difference]: Without dead ends: 1226 [2025-04-13 18:00:46,016 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=259, Invalid=443, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:00:46,016 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:46,016 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2025-04-13 18:00:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1130. [2025-04-13 18:00:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 3.4977856510186007) internal successors, (3949), 1129 states have internal predecessors, (3949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:46,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 3949 transitions. [2025-04-13 18:00:46,375 INFO L79 Accepts]: Start accepts. Automaton has 1130 states and 3949 transitions. Word has length 17 [2025-04-13 18:00:46,375 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:46,375 INFO L485 AbstractCegarLoop]: Abstraction has 1130 states and 3949 transitions. [2025-04-13 18:00:46,375 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:46,375 INFO L278 IsEmpty]: Start isEmpty. Operand 1130 states and 3949 transitions. [2025-04-13 18:00:46,377 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:46,377 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:46,377 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:46,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2025-04-13 18:00:46,577 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2025-04-13 18:00:46,577 INFO L403 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:46,577 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:46,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1692148675, now seen corresponding path program 102 times [2025-04-13 18:00:46,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:46,578 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041502660] [2025-04-13 18:00:46,578 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:46,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:46,580 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:46,583 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:46,583 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:00:46,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:46,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:46,624 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041502660] [2025-04-13 18:00:46,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041502660] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:46,624 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446899124] [2025-04-13 18:00:46,624 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:46,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:46,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:46,625 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:46,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2025-04-13 18:00:46,654 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:46,667 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:46,667 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:00:46,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:46,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:46,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:46,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:46,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:46,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446899124] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:46,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:46,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-04-13 18:00:46,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335923424] [2025-04-13 18:00:46,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:46,722 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:00:46,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:46,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:00:46,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:00:46,723 INFO L87 Difference]: Start difference. First operand 1130 states and 3949 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:47,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:47,572 INFO L93 Difference]: Finished difference Result 1452 states and 5033 transitions. [2025-04-13 18:00:47,572 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:00:47,572 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:47,572 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:47,575 INFO L225 Difference]: With dead ends: 1452 [2025-04-13 18:00:47,575 INFO L226 Difference]: Without dead ends: 1441 [2025-04-13 18:00:47,576 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:00:47,576 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:47,576 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:47,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2025-04-13 18:00:47,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1130. [2025-04-13 18:00:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 3.496014171833481) internal successors, (3947), 1129 states have internal predecessors, (3947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 3947 transitions. [2025-04-13 18:00:47,937 INFO L79 Accepts]: Start accepts. Automaton has 1130 states and 3947 transitions. Word has length 17 [2025-04-13 18:00:47,937 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:47,937 INFO L485 AbstractCegarLoop]: Abstraction has 1130 states and 3947 transitions. [2025-04-13 18:00:47,937 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:47,937 INFO L278 IsEmpty]: Start isEmpty. Operand 1130 states and 3947 transitions. [2025-04-13 18:00:47,939 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:47,939 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:47,939 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:47,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2025-04-13 18:00:48,139 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:48,139 INFO L403 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:48,139 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:48,140 INFO L85 PathProgramCache]: Analyzing trace with hash 914999076, now seen corresponding path program 103 times [2025-04-13 18:00:48,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:48,140 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111764173] [2025-04-13 18:00:48,140 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:48,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:48,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:48,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:48,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:48,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:48,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:48,186 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111764173] [2025-04-13 18:00:48,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111764173] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:48,187 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119842599] [2025-04-13 18:00:48,187 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:48,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:48,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:48,188 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:48,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2025-04-13 18:00:48,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:00:48,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:48,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:48,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:48,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:48,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:48,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:48,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:48,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119842599] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:48,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:48,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-04-13 18:00:48,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635106350] [2025-04-13 18:00:48,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:48,295 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:00:48,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:48,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:00:48,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:00:48,295 INFO L87 Difference]: Start difference. First operand 1130 states and 3947 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:49,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:49,102 INFO L93 Difference]: Finished difference Result 1252 states and 4265 transitions. [2025-04-13 18:00:49,103 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 18:00:49,103 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:49,103 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:49,105 INFO L225 Difference]: With dead ends: 1252 [2025-04-13 18:00:49,105 INFO L226 Difference]: Without dead ends: 1244 [2025-04-13 18:00:49,106 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:00:49,106 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:49,106 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:49,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2025-04-13 18:00:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1136. [2025-04-13 18:00:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.492511013215859) internal successors, (3964), 1135 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 3964 transitions. [2025-04-13 18:00:49,477 INFO L79 Accepts]: Start accepts. Automaton has 1136 states and 3964 transitions. Word has length 17 [2025-04-13 18:00:49,478 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:49,478 INFO L485 AbstractCegarLoop]: Abstraction has 1136 states and 3964 transitions. [2025-04-13 18:00:49,478 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:49,478 INFO L278 IsEmpty]: Start isEmpty. Operand 1136 states and 3964 transitions. [2025-04-13 18:00:49,479 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:49,479 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:49,479 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:49,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2025-04-13 18:00:49,679 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2025-04-13 18:00:49,680 INFO L403 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:49,680 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:49,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1113413625, now seen corresponding path program 104 times [2025-04-13 18:00:49,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:49,680 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281590757] [2025-04-13 18:00:49,680 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:49,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:49,683 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:49,686 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:49,686 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:49,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:49,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:49,734 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281590757] [2025-04-13 18:00:49,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281590757] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:49,735 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996975190] [2025-04-13 18:00:49,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:49,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:49,736 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:49,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2025-04-13 18:00:49,766 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:49,779 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:49,779 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:49,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:49,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:49,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:49,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:49,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996975190] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:49,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:49,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-04-13 18:00:49,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592739867] [2025-04-13 18:00:49,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:49,863 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:00:49,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:49,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:00:49,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:49,864 INFO L87 Difference]: Start difference. First operand 1136 states and 3964 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:50,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:50,669 INFO L93 Difference]: Finished difference Result 1322 states and 4528 transitions. [2025-04-13 18:00:50,669 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:00:50,669 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:50,669 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:50,672 INFO L225 Difference]: With dead ends: 1322 [2025-04-13 18:00:50,672 INFO L226 Difference]: Without dead ends: 1309 [2025-04-13 18:00:50,672 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:00:50,672 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:50,672 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2025-04-13 18:00:51,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1136. [2025-04-13 18:00:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.4907488986784143) internal successors, (3962), 1135 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 3962 transitions. [2025-04-13 18:00:51,039 INFO L79 Accepts]: Start accepts. Automaton has 1136 states and 3962 transitions. Word has length 17 [2025-04-13 18:00:51,039 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:51,039 INFO L485 AbstractCegarLoop]: Abstraction has 1136 states and 3962 transitions. [2025-04-13 18:00:51,039 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:51,039 INFO L278 IsEmpty]: Start isEmpty. Operand 1136 states and 3962 transitions. [2025-04-13 18:00:51,041 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:51,041 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:51,041 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:51,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2025-04-13 18:00:51,241 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2025-04-13 18:00:51,241 INFO L403 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:51,241 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:51,241 INFO L85 PathProgramCache]: Analyzing trace with hash 564752582, now seen corresponding path program 105 times [2025-04-13 18:00:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:51,242 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85380387] [2025-04-13 18:00:51,242 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:51,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:51,244 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:51,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:51,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:00:51,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:51,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:51,290 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85380387] [2025-04-13 18:00:51,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85380387] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:51,290 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230818984] [2025-04-13 18:00:51,290 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:51,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:51,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:51,292 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:51,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2025-04-13 18:00:51,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:51,333 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:51,333 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:00:51,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:51,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:51,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:51,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:51,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230818984] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:51,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:51,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-04-13 18:00:51,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976156526] [2025-04-13 18:00:51,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:51,400 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:00:51,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:51,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:00:51,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:51,400 INFO L87 Difference]: Start difference. First operand 1136 states and 3962 transitions. Second operand has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:52,190 INFO L93 Difference]: Finished difference Result 1221 states and 4170 transitions. [2025-04-13 18:00:52,191 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:00:52,191 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:52,191 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:52,194 INFO L225 Difference]: With dead ends: 1221 [2025-04-13 18:00:52,194 INFO L226 Difference]: Without dead ends: 1216 [2025-04-13 18:00:52,194 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:00:52,194 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:52,194 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2025-04-13 18:00:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1136. [2025-04-13 18:00:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.4907488986784143) internal successors, (3962), 1135 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 3962 transitions. [2025-04-13 18:00:52,563 INFO L79 Accepts]: Start accepts. Automaton has 1136 states and 3962 transitions. Word has length 17 [2025-04-13 18:00:52,563 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:52,563 INFO L485 AbstractCegarLoop]: Abstraction has 1136 states and 3962 transitions. [2025-04-13 18:00:52,563 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.8125) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:52,563 INFO L278 IsEmpty]: Start isEmpty. Operand 1136 states and 3962 transitions. [2025-04-13 18:00:52,564 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:52,564 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:52,564 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:52,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2025-04-13 18:00:52,764 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2025-04-13 18:00:52,765 INFO L403 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:52,765 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:52,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1035382911, now seen corresponding path program 106 times [2025-04-13 18:00:52,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:52,765 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115677899] [2025-04-13 18:00:52,765 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:52,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:52,768 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:52,770 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:52,770 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:52,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:52,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:52,807 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115677899] [2025-04-13 18:00:52,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115677899] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:52,807 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47332488] [2025-04-13 18:00:52,807 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:52,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:52,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:52,809 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:52,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2025-04-13 18:00:52,838 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:00:52,851 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:52,851 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:52,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:52,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:52,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:52,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:52,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47332488] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:52,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:52,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-04-13 18:00:52,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297959622] [2025-04-13 18:00:52,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:52,896 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 18:00:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:52,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 18:00:52,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:00:52,897 INFO L87 Difference]: Start difference. First operand 1136 states and 3962 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:53,604 INFO L93 Difference]: Finished difference Result 1292 states and 4421 transitions. [2025-04-13 18:00:53,604 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 18:00:53,604 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:53,605 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:53,607 INFO L225 Difference]: With dead ends: 1292 [2025-04-13 18:00:53,607 INFO L226 Difference]: Without dead ends: 1277 [2025-04-13 18:00:53,607 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:00:53,608 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:53,608 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:53,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2025-04-13 18:00:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1134. [2025-04-13 18:00:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1133 states have (on average 3.4924977934686674) internal successors, (3957), 1133 states have internal predecessors, (3957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 3957 transitions. [2025-04-13 18:00:53,975 INFO L79 Accepts]: Start accepts. Automaton has 1134 states and 3957 transitions. Word has length 17 [2025-04-13 18:00:53,975 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:53,975 INFO L485 AbstractCegarLoop]: Abstraction has 1134 states and 3957 transitions. [2025-04-13 18:00:53,975 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:53,975 INFO L278 IsEmpty]: Start isEmpty. Operand 1134 states and 3957 transitions. [2025-04-13 18:00:53,977 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:00:53,977 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:53,977 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:53,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2025-04-13 18:00:54,177 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2025-04-13 18:00:54,177 INFO L403 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:54,177 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:54,178 INFO L85 PathProgramCache]: Analyzing trace with hash 813010818, now seen corresponding path program 107 times [2025-04-13 18:00:54,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:54,178 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069323803] [2025-04-13 18:00:54,178 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:54,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:54,180 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:54,183 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:54,183 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:54,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:54,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:54,224 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069323803] [2025-04-13 18:00:54,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069323803] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:54,224 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277701] [2025-04-13 18:00:54,224 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:54,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:54,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:54,226 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:54,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2025-04-13 18:00:54,255 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:00:54,267 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:00:54,268 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:54,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:54,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:00:54,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:54,290 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:54,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277701] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:54,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:54,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-04-13 18:00:54,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368382450] [2025-04-13 18:00:54,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:54,311 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 18:00:54,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:54,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 18:00:54,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:00:54,311 INFO L87 Difference]: Start difference. First operand 1134 states and 3957 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:55,120 INFO L93 Difference]: Finished difference Result 1353 states and 4613 transitions. [2025-04-13 18:00:55,121 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 18:00:55,121 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:00:55,121 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:55,123 INFO L225 Difference]: With dead ends: 1353 [2025-04-13 18:00:55,124 INFO L226 Difference]: Without dead ends: 1345 [2025-04-13 18:00:55,124 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:55,124 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:55,124 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:00:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2025-04-13 18:00:55,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1136. [2025-04-13 18:00:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.492511013215859) internal successors, (3964), 1135 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 3964 transitions. [2025-04-13 18:00:55,499 INFO L79 Accepts]: Start accepts. Automaton has 1136 states and 3964 transitions. Word has length 17 [2025-04-13 18:00:55,499 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:55,499 INFO L485 AbstractCegarLoop]: Abstraction has 1136 states and 3964 transitions. [2025-04-13 18:00:55,499 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:55,499 INFO L278 IsEmpty]: Start isEmpty. Operand 1136 states and 3964 transitions. [2025-04-13 18:00:55,500 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:00:55,500 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:55,500 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:55,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2025-04-13 18:00:55,701 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:55,701 INFO L403 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:55,701 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:55,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1227020167, now seen corresponding path program 108 times [2025-04-13 18:00:55,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:55,701 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907394106] [2025-04-13 18:00:55,701 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:55,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:55,704 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:00:55,709 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:00:55,709 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:55,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:55,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:55,871 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907394106] [2025-04-13 18:00:55,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907394106] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:55,871 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922809108] [2025-04-13 18:00:55,871 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:55,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:55,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:55,872 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:55,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2025-04-13 18:00:55,901 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:00:55,916 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:00:55,916 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:55,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:55,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:00:55,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:56,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:56,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922809108] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:56,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:56,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-04-13 18:00:56,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760418671] [2025-04-13 18:00:56,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:56,243 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:00:56,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:56,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:00:56,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:00:56,243 INFO L87 Difference]: Start difference. First operand 1136 states and 3964 transitions. Second operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:57,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:57,306 INFO L93 Difference]: Finished difference Result 1260 states and 4209 transitions. [2025-04-13 18:00:57,306 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 18:00:57,306 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:00:57,306 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:57,309 INFO L225 Difference]: With dead ends: 1260 [2025-04-13 18:00:57,309 INFO L226 Difference]: Without dead ends: 1242 [2025-04-13 18:00:57,309 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:00:57,309 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:57,309 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:00:57,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2025-04-13 18:00:57,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1182. [2025-04-13 18:00:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 3.4309906858594412) internal successors, (4052), 1181 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 4052 transitions. [2025-04-13 18:00:57,729 INFO L79 Accepts]: Start accepts. Automaton has 1182 states and 4052 transitions. Word has length 18 [2025-04-13 18:00:57,729 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:57,729 INFO L485 AbstractCegarLoop]: Abstraction has 1182 states and 4052 transitions. [2025-04-13 18:00:57,729 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:57,729 INFO L278 IsEmpty]: Start isEmpty. Operand 1182 states and 4052 transitions. [2025-04-13 18:00:57,731 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:00:57,731 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:57,731 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:57,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2025-04-13 18:00:57,931 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:57,931 INFO L403 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:00:57,931 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:57,932 INFO L85 PathProgramCache]: Analyzing trace with hash -45526465, now seen corresponding path program 109 times [2025-04-13 18:00:57,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:57,932 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438930750] [2025-04-13 18:00:57,932 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:57,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:57,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:00:57,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:00:57,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:57,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:58,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:58,094 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438930750] [2025-04-13 18:00:58,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438930750] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:58,094 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608389269] [2025-04-13 18:00:58,094 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:58,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:58,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:58,096 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:58,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2025-04-13 18:00:58,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:00:58,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:00:58,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:58,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:58,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:00:58,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:58,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:00:58,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608389269] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:58,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:58,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-04-13 18:00:58,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940802891] [2025-04-13 18:00:58,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:58,344 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:00:58,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:58,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:00:58,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:00:58,345 INFO L87 Difference]: Start difference. First operand 1182 states and 4052 transitions. Second operand has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:59,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:59,392 INFO L93 Difference]: Finished difference Result 1279 states and 4241 transitions. [2025-04-13 18:00:59,392 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:00:59,392 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:00:59,392 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:59,395 INFO L225 Difference]: With dead ends: 1279 [2025-04-13 18:00:59,395 INFO L226 Difference]: Without dead ends: 1274 [2025-04-13 18:00:59,396 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:00:59,396 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:59,396 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:00:59,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2025-04-13 18:00:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1204. [2025-04-13 18:00:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1203 states have (on average 3.4339152119700747) internal successors, (4131), 1203 states have internal predecessors, (4131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 4131 transitions. [2025-04-13 18:00:59,836 INFO L79 Accepts]: Start accepts. Automaton has 1204 states and 4131 transitions. Word has length 18 [2025-04-13 18:00:59,836 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:59,836 INFO L485 AbstractCegarLoop]: Abstraction has 1204 states and 4131 transitions. [2025-04-13 18:00:59,836 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:59,836 INFO L278 IsEmpty]: Start isEmpty. Operand 1204 states and 4131 transitions. [2025-04-13 18:00:59,838 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:00:59,838 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:59,838 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:59,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2025-04-13 18:01:00,038 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2025-04-13 18:01:00,039 INFO L403 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:00,039 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:00,039 INFO L85 PathProgramCache]: Analyzing trace with hash -919267145, now seen corresponding path program 110 times [2025-04-13 18:01:00,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:00,039 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381473437] [2025-04-13 18:01:00,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:00,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:00,042 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:00,047 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:00,047 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:00,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:00,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:00,194 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381473437] [2025-04-13 18:01:00,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381473437] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:00,194 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268764045] [2025-04-13 18:01:00,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:00,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:00,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:00,196 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:00,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2025-04-13 18:01:00,227 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:00,241 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:00,241 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:00,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:00,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:00,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:00,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:00,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268764045] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:00,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:00,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 18:01:00,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047202262] [2025-04-13 18:01:00,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:00,495 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:01:00,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:00,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:01:00,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:01:00,495 INFO L87 Difference]: Start difference. First operand 1204 states and 4131 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:01,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:01,591 INFO L93 Difference]: Finished difference Result 1307 states and 4322 transitions. [2025-04-13 18:01:01,591 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 18:01:01,592 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:01,592 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:01,595 INFO L225 Difference]: With dead ends: 1307 [2025-04-13 18:01:01,595 INFO L226 Difference]: Without dead ends: 1302 [2025-04-13 18:01:01,595 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:01:01,596 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:01,596 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:01:01,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2025-04-13 18:01:02,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1222. [2025-04-13 18:01:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.43980343980344) internal successors, (4200), 1221 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4200 transitions. [2025-04-13 18:01:02,043 INFO L79 Accepts]: Start accepts. Automaton has 1222 states and 4200 transitions. Word has length 18 [2025-04-13 18:01:02,043 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:02,043 INFO L485 AbstractCegarLoop]: Abstraction has 1222 states and 4200 transitions. [2025-04-13 18:01:02,043 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:02,043 INFO L278 IsEmpty]: Start isEmpty. Operand 1222 states and 4200 transitions. [2025-04-13 18:01:02,045 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:02,045 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:02,045 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:02,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2025-04-13 18:01:02,245 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2025-04-13 18:01:02,245 INFO L403 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:02,245 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:02,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1778736321, now seen corresponding path program 111 times [2025-04-13 18:01:02,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:02,246 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515520976] [2025-04-13 18:01:02,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:02,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:02,248 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:02,254 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:02,254 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:01:02,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:02,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:02,418 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515520976] [2025-04-13 18:01:02,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515520976] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:02,418 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154972097] [2025-04-13 18:01:02,418 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:02,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:02,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:02,420 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:02,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2025-04-13 18:01:02,450 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:02,465 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:02,465 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:01:02,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:02,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:02,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:02,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:02,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154972097] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:02,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:02,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-04-13 18:01:02,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093694511] [2025-04-13 18:01:02,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:02,780 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:01:02,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:02,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:01:02,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:01:02,781 INFO L87 Difference]: Start difference. First operand 1222 states and 4200 transitions. Second operand has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:03,834 INFO L93 Difference]: Finished difference Result 1302 states and 4342 transitions. [2025-04-13 18:01:03,834 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 18:01:03,834 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:03,834 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:03,838 INFO L225 Difference]: With dead ends: 1302 [2025-04-13 18:01:03,838 INFO L226 Difference]: Without dead ends: 1297 [2025-04-13 18:01:03,838 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:01:03,838 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:03,838 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:01:03,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2025-04-13 18:01:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1232. [2025-04-13 18:01:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 3.448415922014622) internal successors, (4245), 1231 states have internal predecessors, (4245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 4245 transitions. [2025-04-13 18:01:04,308 INFO L79 Accepts]: Start accepts. Automaton has 1232 states and 4245 transitions. Word has length 18 [2025-04-13 18:01:04,308 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:04,308 INFO L485 AbstractCegarLoop]: Abstraction has 1232 states and 4245 transitions. [2025-04-13 18:01:04,308 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:04,308 INFO L278 IsEmpty]: Start isEmpty. Operand 1232 states and 4245 transitions. [2025-04-13 18:01:04,310 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:04,310 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:04,310 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:04,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2025-04-13 18:01:04,510 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2025-04-13 18:01:04,510 INFO L403 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:04,510 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1695619431, now seen corresponding path program 112 times [2025-04-13 18:01:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:04,511 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486470199] [2025-04-13 18:01:04,511 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:04,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:04,514 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:04,518 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:04,518 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:04,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:04,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:04,655 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486470199] [2025-04-13 18:01:04,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486470199] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:04,655 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956011744] [2025-04-13 18:01:04,655 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:04,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:04,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:04,657 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:04,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2025-04-13 18:01:04,687 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:04,701 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:04,701 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:04,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:04,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:04,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:04,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:04,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956011744] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:04,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:04,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 18:01:04,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052091963] [2025-04-13 18:01:04,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:04,917 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:04,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:04,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:04,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:04,917 INFO L87 Difference]: Start difference. First operand 1232 states and 4245 transitions. Second operand has 21 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:05,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:05,987 INFO L93 Difference]: Finished difference Result 1293 states and 4330 transitions. [2025-04-13 18:01:05,987 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 18:01:05,987 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:05,987 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:05,991 INFO L225 Difference]: With dead ends: 1293 [2025-04-13 18:01:05,991 INFO L226 Difference]: Without dead ends: 1282 [2025-04-13 18:01:05,991 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:01:05,992 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:05,992 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:01:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2025-04-13 18:01:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1196. [2025-04-13 18:01:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1195 states have (on average 3.4518828451882846) internal successors, (4125), 1195 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 4125 transitions. [2025-04-13 18:01:06,484 INFO L79 Accepts]: Start accepts. Automaton has 1196 states and 4125 transitions. Word has length 18 [2025-04-13 18:01:06,485 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:06,485 INFO L485 AbstractCegarLoop]: Abstraction has 1196 states and 4125 transitions. [2025-04-13 18:01:06,485 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:06,485 INFO L278 IsEmpty]: Start isEmpty. Operand 1196 states and 4125 transitions. [2025-04-13 18:01:06,486 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:06,486 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:06,486 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:06,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2025-04-13 18:01:06,687 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2025-04-13 18:01:06,687 INFO L403 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:06,687 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash -521161223, now seen corresponding path program 113 times [2025-04-13 18:01:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:06,687 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065125024] [2025-04-13 18:01:06,687 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:06,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:06,690 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:06,695 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:06,695 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:06,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:06,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:06,824 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065125024] [2025-04-13 18:01:06,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065125024] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:06,824 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232448708] [2025-04-13 18:01:06,824 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:06,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:06,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:06,826 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:06,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2025-04-13 18:01:06,855 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:06,870 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:06,870 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:06,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:06,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:06,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:06,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:07,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232448708] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:07,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:07,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 20 [2025-04-13 18:01:07,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459186360] [2025-04-13 18:01:07,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:07,123 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:01:07,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:07,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:01:07,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:01:07,123 INFO L87 Difference]: Start difference. First operand 1196 states and 4125 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:08,089 INFO L93 Difference]: Finished difference Result 1286 states and 4343 transitions. [2025-04-13 18:01:08,089 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 18:01:08,089 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:08,089 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:08,092 INFO L225 Difference]: With dead ends: 1286 [2025-04-13 18:01:08,092 INFO L226 Difference]: Without dead ends: 1281 [2025-04-13 18:01:08,093 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:08,093 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:08,093 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2025-04-13 18:01:08,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1222. [2025-04-13 18:01:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.467649467649468) internal successors, (4234), 1221 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4234 transitions. [2025-04-13 18:01:08,552 INFO L79 Accepts]: Start accepts. Automaton has 1222 states and 4234 transitions. Word has length 18 [2025-04-13 18:01:08,552 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:08,552 INFO L485 AbstractCegarLoop]: Abstraction has 1222 states and 4234 transitions. [2025-04-13 18:01:08,552 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:08,552 INFO L278 IsEmpty]: Start isEmpty. Operand 1222 states and 4234 transitions. [2025-04-13 18:01:08,553 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:08,553 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:08,553 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:08,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2025-04-13 18:01:08,754 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2025-04-13 18:01:08,754 INFO L403 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:08,754 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:08,754 INFO L85 PathProgramCache]: Analyzing trace with hash -438044333, now seen corresponding path program 114 times [2025-04-13 18:01:08,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:08,755 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626770013] [2025-04-13 18:01:08,755 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:08,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:08,757 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:08,762 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:08,762 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:01:08,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:08,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:08,907 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626770013] [2025-04-13 18:01:08,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626770013] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:08,907 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836826073] [2025-04-13 18:01:08,907 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:08,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:08,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:08,909 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:08,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2025-04-13 18:01:08,938 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:08,953 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:08,953 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:01:08,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:08,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:08,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:09,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836826073] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:09,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:09,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 21 [2025-04-13 18:01:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760626105] [2025-04-13 18:01:09,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:09,216 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:01:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:09,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:01:09,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:01:09,216 INFO L87 Difference]: Start difference. First operand 1222 states and 4234 transitions. Second operand has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:10,206 INFO L93 Difference]: Finished difference Result 1285 states and 4337 transitions. [2025-04-13 18:01:10,206 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 18:01:10,206 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:10,206 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:10,211 INFO L225 Difference]: With dead ends: 1285 [2025-04-13 18:01:10,211 INFO L226 Difference]: Without dead ends: 1278 [2025-04-13 18:01:10,212 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:01:10,212 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:10,212 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2025-04-13 18:01:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1222. [2025-04-13 18:01:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.461097461097461) internal successors, (4226), 1221 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4226 transitions. [2025-04-13 18:01:10,681 INFO L79 Accepts]: Start accepts. Automaton has 1222 states and 4226 transitions. Word has length 18 [2025-04-13 18:01:10,681 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:10,681 INFO L485 AbstractCegarLoop]: Abstraction has 1222 states and 4226 transitions. [2025-04-13 18:01:10,681 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:10,681 INFO L278 IsEmpty]: Start isEmpty. Operand 1222 states and 4226 transitions. [2025-04-13 18:01:10,683 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:10,683 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:10,683 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:10,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2025-04-13 18:01:10,883 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2025-04-13 18:01:10,883 INFO L403 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:10,884 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1279704727, now seen corresponding path program 115 times [2025-04-13 18:01:10,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:10,884 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922051218] [2025-04-13 18:01:10,884 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:10,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:10,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:01:10,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:10,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:10,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:11,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:11,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:11,030 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922051218] [2025-04-13 18:01:11,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922051218] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:11,030 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040544030] [2025-04-13 18:01:11,030 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:11,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:11,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:11,032 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:11,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2025-04-13 18:01:11,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:01:11,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:11,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:11,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:11,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:11,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:11,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:11,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040544030] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:11,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:11,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2025-04-13 18:01:11,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145903389] [2025-04-13 18:01:11,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:11,306 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:11,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:11,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:11,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:01:11,306 INFO L87 Difference]: Start difference. First operand 1222 states and 4226 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:12,180 INFO L93 Difference]: Finished difference Result 1264 states and 4290 transitions. [2025-04-13 18:01:12,181 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 18:01:12,181 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:12,181 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:12,184 INFO L225 Difference]: With dead ends: 1264 [2025-04-13 18:01:12,184 INFO L226 Difference]: Without dead ends: 1259 [2025-04-13 18:01:12,185 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:01:12,185 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:12,185 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:12,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2025-04-13 18:01:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1222. [2025-04-13 18:01:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.461097461097461) internal successors, (4226), 1221 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4226 transitions. [2025-04-13 18:01:12,646 INFO L79 Accepts]: Start accepts. Automaton has 1222 states and 4226 transitions. Word has length 18 [2025-04-13 18:01:12,646 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:12,646 INFO L485 AbstractCegarLoop]: Abstraction has 1222 states and 4226 transitions. [2025-04-13 18:01:12,646 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:12,646 INFO L278 IsEmpty]: Start isEmpty. Operand 1222 states and 4226 transitions. [2025-04-13 18:01:12,648 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:12,648 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:12,648 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:12,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2025-04-13 18:01:12,848 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:12,848 INFO L403 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:12,848 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash 163370167, now seen corresponding path program 116 times [2025-04-13 18:01:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:12,849 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422194664] [2025-04-13 18:01:12,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:12,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:12,851 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:12,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:12,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:12,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:13,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:13,001 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422194664] [2025-04-13 18:01:13,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422194664] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:13,002 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696439675] [2025-04-13 18:01:13,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:13,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:13,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:13,003 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:13,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2025-04-13 18:01:13,033 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:13,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:13,048 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:13,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:13,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:13,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:13,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696439675] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:13,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:13,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 19 [2025-04-13 18:01:13,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871449661] [2025-04-13 18:01:13,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:13,280 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:13,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:13,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:13,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:13,281 INFO L87 Difference]: Start difference. First operand 1222 states and 4226 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:14,173 INFO L93 Difference]: Finished difference Result 1300 states and 4397 transitions. [2025-04-13 18:01:14,173 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:01:14,173 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:14,173 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:14,177 INFO L225 Difference]: With dead ends: 1300 [2025-04-13 18:01:14,177 INFO L226 Difference]: Without dead ends: 1289 [2025-04-13 18:01:14,177 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:14,178 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:14,178 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2025-04-13 18:01:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1242. [2025-04-13 18:01:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 3.453666398066076) internal successors, (4286), 1241 states have internal predecessors, (4286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 4286 transitions. [2025-04-13 18:01:14,653 INFO L79 Accepts]: Start accepts. Automaton has 1242 states and 4286 transitions. Word has length 18 [2025-04-13 18:01:14,653 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:14,653 INFO L485 AbstractCegarLoop]: Abstraction has 1242 states and 4286 transitions. [2025-04-13 18:01:14,653 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:14,653 INFO L278 IsEmpty]: Start isEmpty. Operand 1242 states and 4286 transitions. [2025-04-13 18:01:14,655 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:14,655 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:14,655 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:14,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2025-04-13 18:01:14,855 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:14,855 INFO L403 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:14,855 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:14,856 INFO L85 PathProgramCache]: Analyzing trace with hash -612982119, now seen corresponding path program 117 times [2025-04-13 18:01:14,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:14,856 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820837252] [2025-04-13 18:01:14,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:14,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:14,859 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:14,865 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:14,865 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:01:14,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:15,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:15,020 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820837252] [2025-04-13 18:01:15,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820837252] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:15,020 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706406542] [2025-04-13 18:01:15,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:15,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:15,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:15,022 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:15,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2025-04-13 18:01:15,056 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:15,071 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:15,071 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:01:15,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:15,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:15,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:15,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:15,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706406542] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:15,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:15,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 21 [2025-04-13 18:01:15,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322779039] [2025-04-13 18:01:15,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:15,309 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:01:15,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:15,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:01:15,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:01:15,310 INFO L87 Difference]: Start difference. First operand 1242 states and 4286 transitions. Second operand has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:16,169 INFO L93 Difference]: Finished difference Result 1290 states and 4355 transitions. [2025-04-13 18:01:16,170 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 18:01:16,170 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:16,170 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:16,173 INFO L225 Difference]: With dead ends: 1290 [2025-04-13 18:01:16,173 INFO L226 Difference]: Without dead ends: 1283 [2025-04-13 18:01:16,174 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:01:16,174 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:16,174 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:01:16,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2025-04-13 18:01:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1212. [2025-04-13 18:01:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1211 states have (on average 3.449215524360033) internal successors, (4177), 1211 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 4177 transitions. [2025-04-13 18:01:16,646 INFO L79 Accepts]: Start accepts. Automaton has 1212 states and 4177 transitions. Word has length 18 [2025-04-13 18:01:16,646 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:16,646 INFO L485 AbstractCegarLoop]: Abstraction has 1212 states and 4177 transitions. [2025-04-13 18:01:16,646 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:16,646 INFO L278 IsEmpty]: Start isEmpty. Operand 1212 states and 4177 transitions. [2025-04-13 18:01:16,647 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:16,647 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:16,647 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:16,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2025-04-13 18:01:16,848 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:16,848 INFO L403 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:16,848 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash -624280393, now seen corresponding path program 118 times [2025-04-13 18:01:16,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:16,848 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476572370] [2025-04-13 18:01:16,848 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:16,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:16,852 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:16,857 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:16,857 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:16,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:17,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:17,017 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476572370] [2025-04-13 18:01:17,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476572370] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:17,017 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450193793] [2025-04-13 18:01:17,017 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:17,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:17,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:17,019 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:17,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2025-04-13 18:01:17,050 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:17,066 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:17,066 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:17,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:17,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:17,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:17,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:17,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450193793] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:17,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:17,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2025-04-13 18:01:17,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621854356] [2025-04-13 18:01:17,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:17,284 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:17,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:17,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:17,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:01:17,284 INFO L87 Difference]: Start difference. First operand 1212 states and 4177 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:18,161 INFO L93 Difference]: Finished difference Result 1253 states and 4239 transitions. [2025-04-13 18:01:18,162 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:01:18,162 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:18,162 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:18,165 INFO L225 Difference]: With dead ends: 1253 [2025-04-13 18:01:18,165 INFO L226 Difference]: Without dead ends: 1244 [2025-04-13 18:01:18,165 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:01:18,166 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:18,166 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2025-04-13 18:01:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1202. [2025-04-13 18:01:18,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 3.4454621149042466) internal successors, (4138), 1201 states have internal predecessors, (4138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4138 transitions. [2025-04-13 18:01:18,645 INFO L79 Accepts]: Start accepts. Automaton has 1202 states and 4138 transitions. Word has length 18 [2025-04-13 18:01:18,645 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:18,645 INFO L485 AbstractCegarLoop]: Abstraction has 1202 states and 4138 transitions. [2025-04-13 18:01:18,645 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:18,645 INFO L278 IsEmpty]: Start isEmpty. Operand 1202 states and 4138 transitions. [2025-04-13 18:01:18,647 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:18,647 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:18,647 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:18,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2025-04-13 18:01:18,847 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:18,847 INFO L403 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:18,848 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash -191038849, now seen corresponding path program 119 times [2025-04-13 18:01:18,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:18,848 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830220063] [2025-04-13 18:01:18,848 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:18,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:18,851 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:18,856 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:18,856 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:01:18,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:19,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:19,024 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830220063] [2025-04-13 18:01:19,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830220063] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:19,024 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859538750] [2025-04-13 18:01:19,024 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:19,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:19,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:19,026 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:19,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2025-04-13 18:01:19,057 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:19,074 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:19,074 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:01:19,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:19,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:19,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:19,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:19,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859538750] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:19,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:19,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 23 [2025-04-13 18:01:19,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888656810] [2025-04-13 18:01:19,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:19,356 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:01:19,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:19,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:01:19,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:01:19,357 INFO L87 Difference]: Start difference. First operand 1202 states and 4138 transitions. Second operand has 25 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:20,369 INFO L93 Difference]: Finished difference Result 1353 states and 4512 transitions. [2025-04-13 18:01:20,369 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:01:20,369 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:20,369 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:20,373 INFO L225 Difference]: With dead ends: 1353 [2025-04-13 18:01:20,373 INFO L226 Difference]: Without dead ends: 1348 [2025-04-13 18:01:20,374 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:01:20,374 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 92 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:20,374 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 0 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:20,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2025-04-13 18:01:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1252. [2025-04-13 18:01:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 3.4732214228617106) internal successors, (4345), 1251 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:20,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 4345 transitions. [2025-04-13 18:01:20,878 INFO L79 Accepts]: Start accepts. Automaton has 1252 states and 4345 transitions. Word has length 18 [2025-04-13 18:01:20,878 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:20,878 INFO L485 AbstractCegarLoop]: Abstraction has 1252 states and 4345 transitions. [2025-04-13 18:01:20,878 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:20,878 INFO L278 IsEmpty]: Start isEmpty. Operand 1252 states and 4345 transitions. [2025-04-13 18:01:20,879 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:20,879 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:20,879 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:20,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2025-04-13 18:01:21,080 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2025-04-13 18:01:21,080 INFO L403 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:21,080 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash -107921959, now seen corresponding path program 120 times [2025-04-13 18:01:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:21,080 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39981919] [2025-04-13 18:01:21,081 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:21,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:21,083 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:21,088 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:21,088 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:01:21,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:21,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:21,259 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39981919] [2025-04-13 18:01:21,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39981919] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:21,259 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309549406] [2025-04-13 18:01:21,259 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:21,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:21,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:21,261 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:21,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2025-04-13 18:01:21,295 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:21,313 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:21,313 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:01:21,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:21,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:21,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:21,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:21,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309549406] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:21,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:21,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2025-04-13 18:01:21,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786944138] [2025-04-13 18:01:21,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:21,577 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:01:21,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:21,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:01:21,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:21,577 INFO L87 Difference]: Start difference. First operand 1252 states and 4345 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:22,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:22,585 INFO L93 Difference]: Finished difference Result 1351 states and 4504 transitions. [2025-04-13 18:01:22,585 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 18:01:22,586 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:22,586 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:22,589 INFO L225 Difference]: With dead ends: 1351 [2025-04-13 18:01:22,589 INFO L226 Difference]: Without dead ends: 1344 [2025-04-13 18:01:22,589 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:01:22,590 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 78 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:22,590 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 0 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:22,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2025-04-13 18:01:23,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1248. [2025-04-13 18:01:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1247 states have (on average 3.4603047313552526) internal successors, (4315), 1247 states have internal predecessors, (4315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 4315 transitions. [2025-04-13 18:01:23,090 INFO L79 Accepts]: Start accepts. Automaton has 1248 states and 4315 transitions. Word has length 18 [2025-04-13 18:01:23,090 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:23,090 INFO L485 AbstractCegarLoop]: Abstraction has 1248 states and 4315 transitions. [2025-04-13 18:01:23,090 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:23,090 INFO L278 IsEmpty]: Start isEmpty. Operand 1248 states and 4315 transitions. [2025-04-13 18:01:23,092 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:23,092 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:23,092 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:23,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2025-04-13 18:01:23,293 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2025-04-13 18:01:23,293 INFO L403 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:23,293 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:23,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1609827101, now seen corresponding path program 121 times [2025-04-13 18:01:23,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:23,293 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797941813] [2025-04-13 18:01:23,293 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:23,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:23,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:01:23,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:23,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:23,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:23,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:23,449 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797941813] [2025-04-13 18:01:23,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797941813] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:23,449 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253644533] [2025-04-13 18:01:23,449 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:23,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:23,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:23,451 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:23,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2025-04-13 18:01:23,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:01:23,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:23,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:23,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:23,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:23,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:23,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:23,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253644533] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:23,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:23,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2025-04-13 18:01:23,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383070546] [2025-04-13 18:01:23,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:23,792 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:01:23,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:23,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:01:23,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:01:23,793 INFO L87 Difference]: Start difference. First operand 1248 states and 4315 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:24,882 INFO L93 Difference]: Finished difference Result 1341 states and 4456 transitions. [2025-04-13 18:01:24,882 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 18:01:24,882 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:24,882 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:24,886 INFO L225 Difference]: With dead ends: 1341 [2025-04-13 18:01:24,886 INFO L226 Difference]: Without dead ends: 1332 [2025-04-13 18:01:24,886 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:01:24,886 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:24,886 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:01:24,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2025-04-13 18:01:25,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1248. [2025-04-13 18:01:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1247 states have (on average 3.4538893344025663) internal successors, (4307), 1247 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 4307 transitions. [2025-04-13 18:01:25,380 INFO L79 Accepts]: Start accepts. Automaton has 1248 states and 4307 transitions. Word has length 18 [2025-04-13 18:01:25,380 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:25,380 INFO L485 AbstractCegarLoop]: Abstraction has 1248 states and 4307 transitions. [2025-04-13 18:01:25,380 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:25,380 INFO L278 IsEmpty]: Start isEmpty. Operand 1248 states and 4307 transitions. [2025-04-13 18:01:25,382 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:25,382 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:25,382 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:25,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2025-04-13 18:01:25,583 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:25,583 INFO L403 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:25,583 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash -974526887, now seen corresponding path program 122 times [2025-04-13 18:01:25,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:25,583 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280369922] [2025-04-13 18:01:25,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:25,586 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:25,591 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:25,591 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:25,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:25,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:25,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:25,749 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280369922] [2025-04-13 18:01:25,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280369922] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:25,749 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441961612] [2025-04-13 18:01:25,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:25,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:25,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:25,751 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:25,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2025-04-13 18:01:25,781 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:25,796 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:25,796 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:25,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:25,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:25,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:25,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:26,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441961612] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:26,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:26,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2025-04-13 18:01:26,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215489342] [2025-04-13 18:01:26,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:26,020 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:26,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:26,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:26,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:01:26,020 INFO L87 Difference]: Start difference. First operand 1248 states and 4307 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:27,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:27,063 INFO L93 Difference]: Finished difference Result 1316 states and 4406 transitions. [2025-04-13 18:01:27,063 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 18:01:27,063 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:27,063 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:27,066 INFO L225 Difference]: With dead ends: 1316 [2025-04-13 18:01:27,067 INFO L226 Difference]: Without dead ends: 1311 [2025-04-13 18:01:27,067 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:27,067 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:27,067 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2025-04-13 18:01:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1250. [2025-04-13 18:01:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.4507606084867892) internal successors, (4310), 1249 states have internal predecessors, (4310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4310 transitions. [2025-04-13 18:01:27,554 INFO L79 Accepts]: Start accepts. Automaton has 1250 states and 4310 transitions. Word has length 18 [2025-04-13 18:01:27,554 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:27,554 INFO L485 AbstractCegarLoop]: Abstraction has 1250 states and 4310 transitions. [2025-04-13 18:01:27,554 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:27,554 INFO L278 IsEmpty]: Start isEmpty. Operand 1250 states and 4310 transitions. [2025-04-13 18:01:27,556 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:27,556 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:27,556 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:27,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2025-04-13 18:01:27,756 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2025-04-13 18:01:27,757 INFO L403 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:27,757 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:27,757 INFO L85 PathProgramCache]: Analyzing trace with hash -122502535, now seen corresponding path program 123 times [2025-04-13 18:01:27,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:27,757 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766414782] [2025-04-13 18:01:27,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:27,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:27,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:27,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:27,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:01:27,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:27,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:27,917 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766414782] [2025-04-13 18:01:27,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766414782] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:27,917 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422703822] [2025-04-13 18:01:27,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:27,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:27,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:27,919 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:27,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2025-04-13 18:01:27,950 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:27,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:27,965 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:01:27,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:27,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:27,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:28,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422703822] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:28,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2025-04-13 18:01:28,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149401172] [2025-04-13 18:01:28,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:28,183 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:28,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:28,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:28,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:01:28,184 INFO L87 Difference]: Start difference. First operand 1250 states and 4310 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:29,276 INFO L93 Difference]: Finished difference Result 1341 states and 4484 transitions. [2025-04-13 18:01:29,276 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 18:01:29,276 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:29,276 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:29,279 INFO L225 Difference]: With dead ends: 1341 [2025-04-13 18:01:29,279 INFO L226 Difference]: Without dead ends: 1336 [2025-04-13 18:01:29,280 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:29,280 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:29,280 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:01:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2025-04-13 18:01:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1260. [2025-04-13 18:01:29,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1259 states have (on average 3.4511517077045273) internal successors, (4345), 1259 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 4345 transitions. [2025-04-13 18:01:29,775 INFO L79 Accepts]: Start accepts. Automaton has 1260 states and 4345 transitions. Word has length 18 [2025-04-13 18:01:29,775 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:29,775 INFO L485 AbstractCegarLoop]: Abstraction has 1260 states and 4345 transitions. [2025-04-13 18:01:29,775 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:29,775 INFO L278 IsEmpty]: Start isEmpty. Operand 1260 states and 4345 transitions. [2025-04-13 18:01:29,777 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:29,777 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:29,777 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:29,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2025-04-13 18:01:29,977 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2025-04-13 18:01:29,977 INFO L403 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:29,978 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash -996243215, now seen corresponding path program 124 times [2025-04-13 18:01:29,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:29,978 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451044939] [2025-04-13 18:01:29,978 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:29,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:29,981 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:29,985 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:29,985 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:29,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:30,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:30,141 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451044939] [2025-04-13 18:01:30,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451044939] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:30,141 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34422707] [2025-04-13 18:01:30,141 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:30,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:30,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:30,143 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:30,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2025-04-13 18:01:30,173 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:30,191 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:30,191 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:30,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:30,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:30,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:30,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:30,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34422707] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:30,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:30,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2025-04-13 18:01:30,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148565509] [2025-04-13 18:01:30,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:30,414 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:30,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:30,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:30,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:01:30,415 INFO L87 Difference]: Start difference. First operand 1260 states and 4345 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:31,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:31,493 INFO L93 Difference]: Finished difference Result 1377 states and 4577 transitions. [2025-04-13 18:01:31,493 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 18:01:31,494 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:31,494 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:31,497 INFO L225 Difference]: With dead ends: 1377 [2025-04-13 18:01:31,497 INFO L226 Difference]: Without dead ends: 1366 [2025-04-13 18:01:31,497 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:31,497 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:31,497 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:31,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2025-04-13 18:01:31,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1270. [2025-04-13 18:01:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.4531126871552402) internal successors, (4382), 1269 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:31,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4382 transitions. [2025-04-13 18:01:31,995 INFO L79 Accepts]: Start accepts. Automaton has 1270 states and 4382 transitions. Word has length 18 [2025-04-13 18:01:31,995 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:31,995 INFO L485 AbstractCegarLoop]: Abstraction has 1270 states and 4382 transitions. [2025-04-13 18:01:31,995 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:31,995 INFO L278 IsEmpty]: Start isEmpty. Operand 1270 states and 4382 transitions. [2025-04-13 18:01:31,997 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:31,997 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:31,997 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:32,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2025-04-13 18:01:32,197 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:32,197 INFO L403 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:32,198 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1855712391, now seen corresponding path program 125 times [2025-04-13 18:01:32,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:32,198 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872891729] [2025-04-13 18:01:32,198 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:32,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:32,201 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:32,205 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:32,205 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:01:32,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:32,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:32,335 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872891729] [2025-04-13 18:01:32,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872891729] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:32,336 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616773508] [2025-04-13 18:01:32,336 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:32,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:32,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:32,337 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:32,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2025-04-13 18:01:32,367 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:32,382 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:32,382 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:01:32,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:32,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:32,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:32,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:32,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616773508] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:32,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:32,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2025-04-13 18:01:32,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669494431] [2025-04-13 18:01:32,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:32,622 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:01:32,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:32,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:01:32,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:01:32,623 INFO L87 Difference]: Start difference. First operand 1270 states and 4382 transitions. Second operand has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:33,703 INFO L93 Difference]: Finished difference Result 1406 states and 4688 transitions. [2025-04-13 18:01:33,703 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:01:33,703 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:33,703 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:33,706 INFO L225 Difference]: With dead ends: 1406 [2025-04-13 18:01:33,706 INFO L226 Difference]: Without dead ends: 1398 [2025-04-13 18:01:33,707 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:01:33,707 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:33,707 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2025-04-13 18:01:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1288. [2025-04-13 18:01:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 3.463092463092463) internal successors, (4457), 1287 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 4457 transitions. [2025-04-13 18:01:34,201 INFO L79 Accepts]: Start accepts. Automaton has 1288 states and 4457 transitions. Word has length 18 [2025-04-13 18:01:34,201 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:34,201 INFO L485 AbstractCegarLoop]: Abstraction has 1288 states and 4457 transitions. [2025-04-13 18:01:34,201 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:34,201 INFO L278 IsEmpty]: Start isEmpty. Operand 1288 states and 4457 transitions. [2025-04-13 18:01:34,203 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:34,203 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:34,203 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:34,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2025-04-13 18:01:34,403 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:34,403 INFO L403 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:34,403 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:34,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1772595501, now seen corresponding path program 126 times [2025-04-13 18:01:34,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:34,404 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131179339] [2025-04-13 18:01:34,404 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:34,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:34,406 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:34,412 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:34,412 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:01:34,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:34,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:34,546 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131179339] [2025-04-13 18:01:34,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131179339] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:34,546 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939304616] [2025-04-13 18:01:34,546 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:34,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:34,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:34,548 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:34,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2025-04-13 18:01:34,578 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:34,594 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:34,594 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:01:34,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:34,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:34,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:34,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:34,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939304616] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:34,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:34,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2025-04-13 18:01:34,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99449635] [2025-04-13 18:01:34,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:34,849 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:01:34,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:34,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:01:34,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:34,849 INFO L87 Difference]: Start difference. First operand 1288 states and 4457 transitions. Second operand has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:35,890 INFO L93 Difference]: Finished difference Result 1392 states and 4660 transitions. [2025-04-13 18:01:35,891 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 18:01:35,891 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:35,891 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:35,894 INFO L225 Difference]: With dead ends: 1392 [2025-04-13 18:01:35,894 INFO L226 Difference]: Without dead ends: 1387 [2025-04-13 18:01:35,895 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:01:35,895 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:35,895 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:35,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2025-04-13 18:01:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1286. [2025-04-13 18:01:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.46147859922179) internal successors, (4448), 1285 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 4448 transitions. [2025-04-13 18:01:36,401 INFO L79 Accepts]: Start accepts. Automaton has 1286 states and 4448 transitions. Word has length 18 [2025-04-13 18:01:36,401 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:36,401 INFO L485 AbstractCegarLoop]: Abstraction has 1286 states and 4448 transitions. [2025-04-13 18:01:36,401 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:36,401 INFO L278 IsEmpty]: Start isEmpty. Operand 1286 states and 4448 transitions. [2025-04-13 18:01:36,403 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:36,403 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:36,403 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:36,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2025-04-13 18:01:36,603 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2025-04-13 18:01:36,603 INFO L403 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:36,604 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1269373591, now seen corresponding path program 127 times [2025-04-13 18:01:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:36,604 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781296783] [2025-04-13 18:01:36,604 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:36,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:01:36,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:36,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:36,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:36,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:36,738 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781296783] [2025-04-13 18:01:36,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781296783] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:36,738 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421747837] [2025-04-13 18:01:36,738 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:36,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:36,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:36,740 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:36,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2025-04-13 18:01:36,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:01:36,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:36,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:36,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:36,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:36,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:01:36,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:37,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421747837] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:37,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:37,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2025-04-13 18:01:37,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709964791] [2025-04-13 18:01:37,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:37,003 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:37,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:37,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:37,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:01:37,003 INFO L87 Difference]: Start difference. First operand 1286 states and 4448 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:38,098 INFO L93 Difference]: Finished difference Result 1422 states and 4738 transitions. [2025-04-13 18:01:38,098 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:01:38,098 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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 18 [2025-04-13 18:01:38,098 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:38,101 INFO L225 Difference]: With dead ends: 1422 [2025-04-13 18:01:38,101 INFO L226 Difference]: Without dead ends: 1410 [2025-04-13 18:01:38,102 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:38,102 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 75 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:38,102 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 0 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:38,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2025-04-13 18:01:38,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1312. [2025-04-13 18:01:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 3.456140350877193) internal successors, (4531), 1311 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 4531 transitions. [2025-04-13 18:01:38,609 INFO L79 Accepts]: Start accepts. Automaton has 1312 states and 4531 transitions. Word has length 18 [2025-04-13 18:01:38,609 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:38,609 INFO L485 AbstractCegarLoop]: Abstraction has 1312 states and 4531 transitions. [2025-04-13 18:01:38,609 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:38,610 INFO L278 IsEmpty]: Start isEmpty. Operand 1312 states and 4531 transitions. [2025-04-13 18:01:38,611 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:38,611 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:38,611 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:38,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2025-04-13 18:01:38,811 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:38,812 INFO L403 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:38,812 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:38,812 INFO L85 PathProgramCache]: Analyzing trace with hash 409904415, now seen corresponding path program 128 times [2025-04-13 18:01:38,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:38,812 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110460417] [2025-04-13 18:01:38,812 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:38,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:38,815 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:38,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:38,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:38,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:38,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:38,963 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110460417] [2025-04-13 18:01:38,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110460417] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:38,963 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943814668] [2025-04-13 18:01:38,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:38,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:38,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:38,965 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:38,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2025-04-13 18:01:38,997 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:39,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:39,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:39,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:39,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:39,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:01:39,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:39,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943814668] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:39,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:39,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 21 [2025-04-13 18:01:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915972626] [2025-04-13 18:01:39,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:39,316 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:01:39,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:39,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:01:39,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:01:39,316 INFO L87 Difference]: Start difference. First operand 1312 states and 4531 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:40,367 INFO L93 Difference]: Finished difference Result 1460 states and 4858 transitions. [2025-04-13 18:01:40,367 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 18:01:40,367 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:40,367 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:40,370 INFO L225 Difference]: With dead ends: 1460 [2025-04-13 18:01:40,371 INFO L226 Difference]: Without dead ends: 1452 [2025-04-13 18:01:40,371 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:01:40,371 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 109 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:40,371 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 0 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:40,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2025-04-13 18:01:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1334. [2025-04-13 18:01:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 3.468867216804201) internal successors, (4624), 1333 states have internal predecessors, (4624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 4624 transitions. [2025-04-13 18:01:40,889 INFO L79 Accepts]: Start accepts. Automaton has 1334 states and 4624 transitions. Word has length 18 [2025-04-13 18:01:40,889 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:40,889 INFO L485 AbstractCegarLoop]: Abstraction has 1334 states and 4624 transitions. [2025-04-13 18:01:40,889 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:40,889 INFO L278 IsEmpty]: Start isEmpty. Operand 1334 states and 4624 transitions. [2025-04-13 18:01:40,891 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:40,891 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:40,891 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:40,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2025-04-13 18:01:41,092 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:41,092 INFO L403 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:41,092 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:41,092 INFO L85 PathProgramCache]: Analyzing trace with hash 493021305, now seen corresponding path program 129 times [2025-04-13 18:01:41,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:41,092 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404051855] [2025-04-13 18:01:41,092 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:41,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:41,095 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:41,100 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:41,100 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:01:41,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:41,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:41,239 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404051855] [2025-04-13 18:01:41,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404051855] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:41,239 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016173410] [2025-04-13 18:01:41,239 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:41,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:41,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:41,241 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:41,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2025-04-13 18:01:41,270 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:41,286 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:41,286 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:01:41,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:41,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:41,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:01:41,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:41,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016173410] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:41,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:41,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 21 [2025-04-13 18:01:41,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170092408] [2025-04-13 18:01:41,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:41,555 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:01:41,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:41,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:01:41,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:01:41,555 INFO L87 Difference]: Start difference. First operand 1334 states and 4624 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:42,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:42,677 INFO L93 Difference]: Finished difference Result 1452 states and 4837 transitions. [2025-04-13 18:01:42,677 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:01:42,677 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:42,677 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:42,681 INFO L225 Difference]: With dead ends: 1452 [2025-04-13 18:01:42,681 INFO L226 Difference]: Without dead ends: 1441 [2025-04-13 18:01:42,681 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:01:42,681 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:42,681 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2025-04-13 18:01:43,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 1318. [2025-04-13 18:01:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1317 states have (on average 3.460895975702354) internal successors, (4558), 1317 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:43,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 4558 transitions. [2025-04-13 18:01:43,200 INFO L79 Accepts]: Start accepts. Automaton has 1318 states and 4558 transitions. Word has length 18 [2025-04-13 18:01:43,200 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:43,200 INFO L485 AbstractCegarLoop]: Abstraction has 1318 states and 4558 transitions. [2025-04-13 18:01:43,200 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:43,200 INFO L278 IsEmpty]: Start isEmpty. Operand 1318 states and 4558 transitions. [2025-04-13 18:01:43,201 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:43,202 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:43,202 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:43,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2025-04-13 18:01:43,402 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:43,402 INFO L403 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:43,402 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:43,403 INFO L85 PathProgramCache]: Analyzing trace with hash 481723031, now seen corresponding path program 130 times [2025-04-13 18:01:43,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:43,403 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593778188] [2025-04-13 18:01:43,403 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:43,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:43,406 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:43,410 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:43,410 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:43,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:43,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:43,574 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593778188] [2025-04-13 18:01:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593778188] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:43,574 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972337193] [2025-04-13 18:01:43,574 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:43,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:43,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:43,576 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:43,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2025-04-13 18:01:43,606 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:43,621 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:43,621 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:43,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:43,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:43,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:01:43,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:43,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972337193] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:43,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:43,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2025-04-13 18:01:43,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548488400] [2025-04-13 18:01:43,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:43,880 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:43,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:43,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:43,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:01:43,881 INFO L87 Difference]: Start difference. First operand 1318 states and 4558 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:44,891 INFO L93 Difference]: Finished difference Result 1410 states and 4703 transitions. [2025-04-13 18:01:44,892 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:01:44,892 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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 18 [2025-04-13 18:01:44,892 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:44,896 INFO L225 Difference]: With dead ends: 1410 [2025-04-13 18:01:44,896 INFO L226 Difference]: Without dead ends: 1401 [2025-04-13 18:01:44,896 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:01:44,896 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:44,896 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:01:44,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2025-04-13 18:01:45,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1308. [2025-04-13 18:01:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1307 states have (on average 3.452945677123183) internal successors, (4513), 1307 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 4513 transitions. [2025-04-13 18:01:45,418 INFO L79 Accepts]: Start accepts. Automaton has 1308 states and 4513 transitions. Word has length 18 [2025-04-13 18:01:45,418 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:45,418 INFO L485 AbstractCegarLoop]: Abstraction has 1308 states and 4513 transitions. [2025-04-13 18:01:45,418 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:45,418 INFO L278 IsEmpty]: Start isEmpty. Operand 1308 states and 4513 transitions. [2025-04-13 18:01:45,420 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:45,420 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:45,420 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:45,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2025-04-13 18:01:45,620 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:45,620 INFO L403 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:45,621 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:45,621 INFO L85 PathProgramCache]: Analyzing trace with hash 131476537, now seen corresponding path program 131 times [2025-04-13 18:01:45,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:45,621 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819257253] [2025-04-13 18:01:45,621 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:45,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:45,624 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:45,628 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:45,628 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:45,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:45,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:45,791 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819257253] [2025-04-13 18:01:45,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819257253] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:45,791 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955390482] [2025-04-13 18:01:45,791 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:45,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:45,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:45,793 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:45,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2025-04-13 18:01:45,824 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:45,840 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:45,840 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:45,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:45,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:45,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:01:45,939 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:46,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955390482] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:46,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:46,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2025-04-13 18:01:46,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617286801] [2025-04-13 18:01:46,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:46,089 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:46,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:46,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:46,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:01:46,089 INFO L87 Difference]: Start difference. First operand 1308 states and 4513 transitions. Second operand has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:47,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:47,118 INFO L93 Difference]: Finished difference Result 1374 states and 4620 transitions. [2025-04-13 18:01:47,118 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 18:01:47,118 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:47,118 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:47,122 INFO L225 Difference]: With dead ends: 1374 [2025-04-13 18:01:47,122 INFO L226 Difference]: Without dead ends: 1363 [2025-04-13 18:01:47,122 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:01:47,123 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:47,123 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2025-04-13 18:01:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1298. [2025-04-13 18:01:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.449498843484965) internal successors, (4474), 1297 states have internal predecessors, (4474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 4474 transitions. [2025-04-13 18:01:47,642 INFO L79 Accepts]: Start accepts. Automaton has 1298 states and 4474 transitions. Word has length 18 [2025-04-13 18:01:47,642 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:47,642 INFO L485 AbstractCegarLoop]: Abstraction has 1298 states and 4474 transitions. [2025-04-13 18:01:47,642 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:47,642 INFO L278 IsEmpty]: Start isEmpty. Operand 1298 states and 4474 transitions. [2025-04-13 18:01:47,644 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:47,644 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:47,644 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:47,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2025-04-13 18:01:47,844 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2025-04-13 18:01:47,844 INFO L403 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:47,845 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1452820153, now seen corresponding path program 132 times [2025-04-13 18:01:47,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:47,845 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205592893] [2025-04-13 18:01:47,845 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:47,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:47,848 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:47,853 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:47,853 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:01:47,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:48,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205592893] [2025-04-13 18:01:48,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205592893] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:48,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778421559] [2025-04-13 18:01:48,012 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:48,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:48,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:48,014 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:48,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2025-04-13 18:01:48,044 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 4 equivalence classes. [2025-04-13 18:01:48,060 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:48,060 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:01:48,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:48,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:48,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:48,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:48,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778421559] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:48,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:48,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-04-13 18:01:48,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502674758] [2025-04-13 18:01:48,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:48,324 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:01:48,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:48,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:01:48,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:01:48,325 INFO L87 Difference]: Start difference. First operand 1298 states and 4474 transitions. Second operand has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:49,479 INFO L93 Difference]: Finished difference Result 1492 states and 4976 transitions. [2025-04-13 18:01:49,479 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-13 18:01:49,480 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:49,480 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:49,484 INFO L225 Difference]: With dead ends: 1492 [2025-04-13 18:01:49,484 INFO L226 Difference]: Without dead ends: 1487 [2025-04-13 18:01:49,484 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:01:49,485 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 122 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:49,485 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:49,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2025-04-13 18:01:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1386. [2025-04-13 18:01:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.471480144404332) internal successors, (4808), 1385 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4808 transitions. [2025-04-13 18:01:50,038 INFO L79 Accepts]: Start accepts. Automaton has 1386 states and 4808 transitions. Word has length 18 [2025-04-13 18:01:50,038 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:50,038 INFO L485 AbstractCegarLoop]: Abstraction has 1386 states and 4808 transitions. [2025-04-13 18:01:50,038 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:50,038 INFO L278 IsEmpty]: Start isEmpty. Operand 1386 states and 4808 transitions. [2025-04-13 18:01:50,040 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:50,040 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:50,040 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:50,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2025-04-13 18:01:50,240 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2025-04-13 18:01:50,241 INFO L403 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:50,241 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1535937043, now seen corresponding path program 133 times [2025-04-13 18:01:50,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:50,241 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751061184] [2025-04-13 18:01:50,241 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:50,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:50,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:01:50,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:50,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:50,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:50,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:50,394 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751061184] [2025-04-13 18:01:50,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751061184] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:50,394 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651336909] [2025-04-13 18:01:50,394 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:50,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:50,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:50,396 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:50,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2025-04-13 18:01:50,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-13 18:01:50,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:50,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:50,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:50,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:50,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:50,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:50,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:50,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651336909] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:50,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:50,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-04-13 18:01:50,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745428115] [2025-04-13 18:01:50,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:50,711 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:01:50,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:50,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:01:50,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:01:50,711 INFO L87 Difference]: Start difference. First operand 1386 states and 4808 transitions. Second operand has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:51,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:51,856 INFO L93 Difference]: Finished difference Result 1494 states and 4978 transitions. [2025-04-13 18:01:51,856 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:01:51,856 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:51,856 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:51,860 INFO L225 Difference]: With dead ends: 1494 [2025-04-13 18:01:51,860 INFO L226 Difference]: Without dead ends: 1489 [2025-04-13 18:01:51,861 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:01:51,861 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:51,861 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2025-04-13 18:01:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1380. [2025-04-13 18:01:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.467005076142132) internal successors, (4781), 1379 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4781 transitions. [2025-04-13 18:01:52,416 INFO L79 Accepts]: Start accepts. Automaton has 1380 states and 4781 transitions. Word has length 18 [2025-04-13 18:01:52,416 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:52,416 INFO L485 AbstractCegarLoop]: Abstraction has 1380 states and 4781 transitions. [2025-04-13 18:01:52,416 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 24 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:52,416 INFO L278 IsEmpty]: Start isEmpty. Operand 1380 states and 4781 transitions. [2025-04-13 18:01:52,418 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:52,418 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:52,418 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:52,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2025-04-13 18:01:52,618 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2025-04-13 18:01:52,619 INFO L403 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:52,619 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:52,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1041281193, now seen corresponding path program 134 times [2025-04-13 18:01:52,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:52,619 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575785353] [2025-04-13 18:01:52,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:52,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:52,622 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:52,626 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:52,626 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:52,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:52,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:52,782 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575785353] [2025-04-13 18:01:52,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575785353] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:52,783 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740504609] [2025-04-13 18:01:52,783 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:52,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:52,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:52,785 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:52,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2025-04-13 18:01:52,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:52,832 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:52,832 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:52,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:52,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:52,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:52,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:53,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740504609] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:53,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:53,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-04-13 18:01:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088586577] [2025-04-13 18:01:53,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:53,081 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:01:53,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:53,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:01:53,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:01:53,082 INFO L87 Difference]: Start difference. First operand 1380 states and 4781 transitions. Second operand has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:54,289 INFO L93 Difference]: Finished difference Result 1500 states and 4967 transitions. [2025-04-13 18:01:54,289 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-13 18:01:54,289 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:54,289 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:54,292 INFO L225 Difference]: With dead ends: 1500 [2025-04-13 18:01:54,293 INFO L226 Difference]: Without dead ends: 1495 [2025-04-13 18:01:54,293 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:01:54,293 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:54,293 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:01:54,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2025-04-13 18:01:54,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1376. [2025-04-13 18:01:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.4654545454545453) internal successors, (4765), 1375 states have internal predecessors, (4765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 4765 transitions. [2025-04-13 18:01:54,843 INFO L79 Accepts]: Start accepts. Automaton has 1376 states and 4765 transitions. Word has length 18 [2025-04-13 18:01:54,843 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:54,843 INFO L485 AbstractCegarLoop]: Abstraction has 1376 states and 4765 transitions. [2025-04-13 18:01:54,843 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:54,843 INFO L278 IsEmpty]: Start isEmpty. Operand 1376 states and 4765 transitions. [2025-04-13 18:01:54,844 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:54,844 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:54,844 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:54,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2025-04-13 18:01:55,045 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2025-04-13 18:01:55,045 INFO L403 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:55,045 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:55,045 INFO L85 PathProgramCache]: Analyzing trace with hash 669332115, now seen corresponding path program 135 times [2025-04-13 18:01:55,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:55,045 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091400212] [2025-04-13 18:01:55,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:55,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:55,048 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:55,054 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:55,054 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:01:55,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:55,233 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091400212] [2025-04-13 18:01:55,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091400212] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:55,233 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050378169] [2025-04-13 18:01:55,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:55,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:55,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:55,235 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:55,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2025-04-13 18:01:55,264 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-04-13 18:01:55,279 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:55,279 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:01:55,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:55,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:55,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:55,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:55,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050378169] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:55,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:55,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-13 18:01:55,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268094474] [2025-04-13 18:01:55,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:55,505 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:55,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:55,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:55,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:55,506 INFO L87 Difference]: Start difference. First operand 1376 states and 4765 transitions. Second operand has 21 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:56,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:56,690 INFO L93 Difference]: Finished difference Result 1479 states and 4923 transitions. [2025-04-13 18:01:56,690 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:01:56,691 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:56,691 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:56,694 INFO L225 Difference]: With dead ends: 1479 [2025-04-13 18:01:56,694 INFO L226 Difference]: Without dead ends: 1474 [2025-04-13 18:01:56,694 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:01:56,694 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 98 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:56,695 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 0 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2025-04-13 18:01:57,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1374. [2025-04-13 18:01:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1373 states have (on average 3.4639475600873997) internal successors, (4756), 1373 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:57,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 4756 transitions. [2025-04-13 18:01:57,237 INFO L79 Accepts]: Start accepts. Automaton has 1374 states and 4756 transitions. Word has length 18 [2025-04-13 18:01:57,237 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:57,237 INFO L485 AbstractCegarLoop]: Abstraction has 1374 states and 4756 transitions. [2025-04-13 18:01:57,237 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:57,238 INFO L278 IsEmpty]: Start isEmpty. Operand 1374 states and 4756 transitions. [2025-04-13 18:01:57,239 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-04-13 18:01:57,239 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:57,239 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:57,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2025-04-13 18:01:57,439 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:57,440 INFO L403 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:57,440 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:57,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2136230185, now seen corresponding path program 136 times [2025-04-13 18:01:57,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:57,440 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913957884] [2025-04-13 18:01:57,440 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:57,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:57,443 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:57,447 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:57,447 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:57,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:57,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:57,613 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913957884] [2025-04-13 18:01:57,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913957884] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:57,614 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213354889] [2025-04-13 18:01:57,614 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:57,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:57,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:57,615 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:57,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2025-04-13 18:01:57,645 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-04-13 18:01:57,659 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-13 18:01:57,659 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:57,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:57,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-04-13 18:01:57,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:57,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:57,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213354889] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:57,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:57,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-04-13 18:01:57,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487393642] [2025-04-13 18:01:57,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:57,857 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:01:57,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:57,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:01:57,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:01:57,858 INFO L87 Difference]: Start difference. First operand 1374 states and 4756 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:59,038 INFO L93 Difference]: Finished difference Result 1460 states and 4886 transitions. [2025-04-13 18:01:59,038 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:01:59,039 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-04-13 18:01:59,039 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:59,042 INFO L225 Difference]: With dead ends: 1460 [2025-04-13 18:01:59,042 INFO L226 Difference]: Without dead ends: 1455 [2025-04-13 18:01:59,042 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:01:59,042 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:59,043 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:01:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2025-04-13 18:01:59,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1382. [2025-04-13 18:01:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1381 states have (on average 3.452570601013758) internal successors, (4768), 1381 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 4768 transitions. [2025-04-13 18:01:59,605 INFO L79 Accepts]: Start accepts. Automaton has 1382 states and 4768 transitions. Word has length 18 [2025-04-13 18:01:59,605 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:59,605 INFO L485 AbstractCegarLoop]: Abstraction has 1382 states and 4768 transitions. [2025-04-13 18:01:59,605 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:59,605 INFO L278 IsEmpty]: Start isEmpty. Operand 1382 states and 4768 transitions. [2025-04-13 18:01:59,607 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:01:59,607 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:59,607 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:59,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2025-04-13 18:01:59,807 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2025-04-13 18:01:59,807 INFO L403 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:01:59,808 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:59,808 INFO L85 PathProgramCache]: Analyzing trace with hash 655362147, now seen corresponding path program 137 times [2025-04-13 18:01:59,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:59,808 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210007820] [2025-04-13 18:01:59,808 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:59,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:59,811 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:01:59,814 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:01:59,815 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:59,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:59,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:59,869 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210007820] [2025-04-13 18:01:59,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210007820] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:59,869 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10896967] [2025-04-13 18:01:59,869 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:59,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:59,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:59,871 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:01:59,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2025-04-13 18:01:59,901 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:01:59,916 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:01:59,917 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:59,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:59,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:01:59,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:59,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:01:59,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10896967] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:59,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:59,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2025-04-13 18:01:59,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856178419] [2025-04-13 18:01:59,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:59,985 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-13 18:01:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:59,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-13 18:01:59,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:01:59,985 INFO L87 Difference]: Start difference. First operand 1382 states and 4768 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:01,444 INFO L93 Difference]: Finished difference Result 1989 states and 6667 transitions. [2025-04-13 18:02:01,444 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:02:01,444 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:01,444 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:01,449 INFO L225 Difference]: With dead ends: 1989 [2025-04-13 18:02:01,449 INFO L226 Difference]: Without dead ends: 1964 [2025-04-13 18:02:01,449 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-04-13 18:02:01,450 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:01,450 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2025-04-13 18:02:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1377. [2025-04-13 18:02:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.457122093023256) internal successors, (4757), 1376 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 4757 transitions. [2025-04-13 18:02:02,029 INFO L79 Accepts]: Start accepts. Automaton has 1377 states and 4757 transitions. Word has length 19 [2025-04-13 18:02:02,029 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:02,029 INFO L485 AbstractCegarLoop]: Abstraction has 1377 states and 4757 transitions. [2025-04-13 18:02:02,029 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:02,029 INFO L278 IsEmpty]: Start isEmpty. Operand 1377 states and 4757 transitions. [2025-04-13 18:02:02,031 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:02,031 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:02,031 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:02,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2025-04-13 18:02:02,231 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:02,231 INFO L403 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:02,232 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash 799158690, now seen corresponding path program 138 times [2025-04-13 18:02:02,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:02,232 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159236839] [2025-04-13 18:02:02,232 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:02,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:02,235 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:02,239 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:02,239 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:02:02,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:02,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:02,300 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159236839] [2025-04-13 18:02:02,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159236839] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:02,300 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965880486] [2025-04-13 18:02:02,300 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:02,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:02,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:02,302 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:02,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2025-04-13 18:02:02,333 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:02,349 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:02,349 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:02:02,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:02,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:02,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:02,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:02,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965880486] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:02,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:02,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-04-13 18:02:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2238876] [2025-04-13 18:02:02,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:02,426 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:02:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:02,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:02:02,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:02:02,427 INFO L87 Difference]: Start difference. First operand 1377 states and 4757 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18:02:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:04,159 INFO L93 Difference]: Finished difference Result 2119 states and 7117 transitions. [2025-04-13 18:02:04,159 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 18:02:04,159 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 19 [2025-04-13 18:02:04,159 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:04,164 INFO L225 Difference]: With dead ends: 2119 [2025-04-13 18:02:04,164 INFO L226 Difference]: Without dead ends: 2110 [2025-04-13 18:02:04,164 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:02:04,164 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:04,164 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2025-04-13 18:02:04,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1425. [2025-04-13 18:02:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 3.458567415730337) internal successors, (4925), 1424 states have internal predecessors, (4925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 4925 transitions. [2025-04-13 18:02:04,795 INFO L79 Accepts]: Start accepts. Automaton has 1425 states and 4925 transitions. Word has length 19 [2025-04-13 18:02:04,796 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:04,796 INFO L485 AbstractCegarLoop]: Abstraction has 1425 states and 4925 transitions. [2025-04-13 18:02:04,796 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18:02:04,796 INFO L278 IsEmpty]: Start isEmpty. Operand 1425 states and 4925 transitions. [2025-04-13 18:02:04,797 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:04,797 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:04,797 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:04,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2025-04-13 18:02:04,998 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:04,998 INFO L403 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:04,998 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash 773132005, now seen corresponding path program 139 times [2025-04-13 18:02:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:04,998 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772400740] [2025-04-13 18:02:04,998 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:04,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:05,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:02:05,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:05,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:05,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:05,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:05,064 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772400740] [2025-04-13 18:02:05,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772400740] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:05,064 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094112696] [2025-04-13 18:02:05,064 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:05,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:05,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:05,066 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:05,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2025-04-13 18:02:05,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:02:05,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:05,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:05,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:05,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:05,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:05,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:05,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094112696] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:05,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:05,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2025-04-13 18:02:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79738556] [2025-04-13 18:02:05,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:05,202 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:02:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:05,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:02:05,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:02:05,203 INFO L87 Difference]: Start difference. First operand 1425 states and 4925 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:06,905 INFO L93 Difference]: Finished difference Result 2050 states and 6898 transitions. [2025-04-13 18:02:06,905 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:02:06,905 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:06,905 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:06,910 INFO L225 Difference]: With dead ends: 2050 [2025-04-13 18:02:06,910 INFO L226 Difference]: Without dead ends: 2030 [2025-04-13 18:02:06,911 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:02:06,911 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:06,911 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:06,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2025-04-13 18:02:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 1528. [2025-04-13 18:02:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 3.450556647020301) internal successors, (5269), 1527 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 5269 transitions. [2025-04-13 18:02:07,637 INFO L79 Accepts]: Start accepts. Automaton has 1528 states and 5269 transitions. Word has length 19 [2025-04-13 18:02:07,637 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:07,637 INFO L485 AbstractCegarLoop]: Abstraction has 1528 states and 5269 transitions. [2025-04-13 18:02:07,637 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:07,637 INFO L278 IsEmpty]: Start isEmpty. Operand 1528 states and 5269 transitions. [2025-04-13 18:02:07,639 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:07,639 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:07,639 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:07,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2025-04-13 18:02:07,839 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:07,839 INFO L403 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:07,840 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:07,840 INFO L85 PathProgramCache]: Analyzing trace with hash -783498240, now seen corresponding path program 140 times [2025-04-13 18:02:07,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:07,840 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114382314] [2025-04-13 18:02:07,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:07,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:07,843 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:07,846 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:07,846 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:07,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:07,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:07,910 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114382314] [2025-04-13 18:02:07,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114382314] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:07,910 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127568085] [2025-04-13 18:02:07,910 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:07,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:07,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:07,912 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:07,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2025-04-13 18:02:07,946 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:07,963 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:07,963 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:07,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:07,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:07,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:08,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127568085] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:08,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:08,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2025-04-13 18:02:08,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806456760] [2025-04-13 18:02:08,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:08,079 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:02:08,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:08,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:02:08,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:02:08,079 INFO L87 Difference]: Start difference. First operand 1528 states and 5269 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:09,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:09,989 INFO L93 Difference]: Finished difference Result 1852 states and 6214 transitions. [2025-04-13 18:02:09,989 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:02:09,989 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:09,989 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:09,994 INFO L225 Difference]: With dead ends: 1852 [2025-04-13 18:02:09,994 INFO L226 Difference]: Without dead ends: 1843 [2025-04-13 18:02:09,994 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=268, Invalid=662, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:02:09,994 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:09,994 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:02:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2025-04-13 18:02:10,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1534. [2025-04-13 18:02:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 3.45075016307893) internal successors, (5290), 1533 states have internal predecessors, (5290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 5290 transitions. [2025-04-13 18:02:10,745 INFO L79 Accepts]: Start accepts. Automaton has 1534 states and 5290 transitions. Word has length 19 [2025-04-13 18:02:10,745 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:10,745 INFO L485 AbstractCegarLoop]: Abstraction has 1534 states and 5290 transitions. [2025-04-13 18:02:10,745 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:10,745 INFO L278 IsEmpty]: Start isEmpty. Operand 1534 states and 5290 transitions. [2025-04-13 18:02:10,747 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:10,747 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:10,747 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:10,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2025-04-13 18:02:10,947 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:10,948 INFO L403 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:10,948 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:10,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1373038755, now seen corresponding path program 141 times [2025-04-13 18:02:10,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:10,948 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71663681] [2025-04-13 18:02:10,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:10,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:10,951 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:10,957 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:10,957 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:10,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:11,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:11,016 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71663681] [2025-04-13 18:02:11,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71663681] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:11,016 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599313565] [2025-04-13 18:02:11,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:11,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:11,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:11,018 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:11,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2025-04-13 18:02:11,048 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:11,064 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:11,064 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:11,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:11,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:11,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:11,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:11,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599313565] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:11,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:11,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:02:11,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860923972] [2025-04-13 18:02:11,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:11,143 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:02:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:11,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:02:11,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:02:11,144 INFO L87 Difference]: Start difference. First operand 1534 states and 5290 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:13,086 INFO L93 Difference]: Finished difference Result 2353 states and 8041 transitions. [2025-04-13 18:02:13,086 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:02:13,086 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:13,087 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:13,092 INFO L225 Difference]: With dead ends: 2353 [2025-04-13 18:02:13,092 INFO L226 Difference]: Without dead ends: 2324 [2025-04-13 18:02:13,092 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:02:13,092 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:13,092 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2025-04-13 18:02:13,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 1701. [2025-04-13 18:02:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1700 states have (on average 3.5029411764705882) internal successors, (5955), 1700 states have internal predecessors, (5955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 5955 transitions. [2025-04-13 18:02:13,893 INFO L79 Accepts]: Start accepts. Automaton has 1701 states and 5955 transitions. Word has length 19 [2025-04-13 18:02:13,893 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:13,893 INFO L485 AbstractCegarLoop]: Abstraction has 1701 states and 5955 transitions. [2025-04-13 18:02:13,893 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:13,893 INFO L278 IsEmpty]: Start isEmpty. Operand 1701 states and 5955 transitions. [2025-04-13 18:02:13,895 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:13,895 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:13,895 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:13,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2025-04-13 18:02:14,095 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:14,096 INFO L403 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:14,096 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:14,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1561799966, now seen corresponding path program 142 times [2025-04-13 18:02:14,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:14,096 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918800093] [2025-04-13 18:02:14,096 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:14,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:14,099 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:14,102 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:14,102 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:14,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:14,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:14,159 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918800093] [2025-04-13 18:02:14,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918800093] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:14,159 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86319306] [2025-04-13 18:02:14,159 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:14,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:14,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:14,161 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:14,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2025-04-13 18:02:14,191 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:14,206 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:14,206 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:14,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:14,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:14,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:14,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86319306] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:14,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2025-04-13 18:02:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833338299] [2025-04-13 18:02:14,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:14,280 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:02:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:14,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:02:14,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:02:14,281 INFO L87 Difference]: Start difference. First operand 1701 states and 5955 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:16,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:16,449 INFO L93 Difference]: Finished difference Result 2082 states and 7045 transitions. [2025-04-13 18:02:16,449 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 18:02:16,450 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:16,450 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:16,454 INFO L225 Difference]: With dead ends: 2082 [2025-04-13 18:02:16,454 INFO L226 Difference]: Without dead ends: 2075 [2025-04-13 18:02:16,455 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=309, Invalid=683, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:02:16,455 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:16,455 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:16,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2025-04-13 18:02:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1723. [2025-04-13 18:02:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 3.502903600464576) internal successors, (6032), 1722 states have internal predecessors, (6032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 6032 transitions. [2025-04-13 18:02:17,265 INFO L79 Accepts]: Start accepts. Automaton has 1723 states and 6032 transitions. Word has length 19 [2025-04-13 18:02:17,265 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:17,265 INFO L485 AbstractCegarLoop]: Abstraction has 1723 states and 6032 transitions. [2025-04-13 18:02:17,265 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:17,265 INFO L278 IsEmpty]: Start isEmpty. Operand 1723 states and 6032 transitions. [2025-04-13 18:02:17,267 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:17,267 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:17,267 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:17,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2025-04-13 18:02:17,468 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2025-04-13 18:02:17,468 INFO L403 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:17,468 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:17,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1605771237, now seen corresponding path program 143 times [2025-04-13 18:02:17,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:17,468 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931658376] [2025-04-13 18:02:17,468 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:02:17,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:17,471 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:17,475 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:17,475 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:02:17,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:17,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:17,537 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931658376] [2025-04-13 18:02:17,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931658376] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:17,537 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233669566] [2025-04-13 18:02:17,537 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:02:17,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:17,538 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:17,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2025-04-13 18:02:17,568 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:17,584 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:17,584 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:02:17,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:17,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:17,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:17,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:17,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233669566] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:17,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:17,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2025-04-13 18:02:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831954174] [2025-04-13 18:02:17,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:17,656 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:02:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:17,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:02:17,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:02:17,656 INFO L87 Difference]: Start difference. First operand 1723 states and 6032 transitions. Second operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:19,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:19,710 INFO L93 Difference]: Finished difference Result 2426 states and 8325 transitions. [2025-04-13 18:02:19,711 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:02:19,711 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:19,711 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:19,717 INFO L225 Difference]: With dead ends: 2426 [2025-04-13 18:02:19,717 INFO L226 Difference]: Without dead ends: 2397 [2025-04-13 18:02:19,717 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:02:19,717 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:19,717 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2025-04-13 18:02:20,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1804. [2025-04-13 18:02:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1803 states have (on average 3.5063782584581253) internal successors, (6322), 1803 states have internal predecessors, (6322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 6322 transitions. [2025-04-13 18:02:20,572 INFO L79 Accepts]: Start accepts. Automaton has 1804 states and 6322 transitions. Word has length 19 [2025-04-13 18:02:20,572 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:20,572 INFO L485 AbstractCegarLoop]: Abstraction has 1804 states and 6322 transitions. [2025-04-13 18:02:20,572 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:20,572 INFO L278 IsEmpty]: Start isEmpty. Operand 1804 states and 6322 transitions. [2025-04-13 18:02:20,574 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:20,574 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:20,574 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:20,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2025-04-13 18:02:20,774 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2025-04-13 18:02:20,775 INFO L403 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:20,775 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash -201433152, now seen corresponding path program 144 times [2025-04-13 18:02:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:20,775 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757342040] [2025-04-13 18:02:20,775 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:20,778 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:20,782 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:20,782 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:02:20,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:20,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:20,850 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757342040] [2025-04-13 18:02:20,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757342040] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:20,850 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168002791] [2025-04-13 18:02:20,850 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:20,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:20,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:20,851 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:20,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2025-04-13 18:02:20,881 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:20,896 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:20,897 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:02:20,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:20,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:20,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:20,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:20,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168002791] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:20,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:20,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:02:20,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344629060] [2025-04-13 18:02:20,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:20,985 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:02:20,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:20,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:02:20,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:02:20,985 INFO L87 Difference]: Start difference. First operand 1804 states and 6322 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:23,323 INFO L93 Difference]: Finished difference Result 2286 states and 7831 transitions. [2025-04-13 18:02:23,323 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 18:02:23,323 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:23,323 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:23,329 INFO L225 Difference]: With dead ends: 2286 [2025-04-13 18:02:23,329 INFO L226 Difference]: Without dead ends: 2277 [2025-04-13 18:02:23,329 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=493, Invalid=1067, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:02:23,329 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:23,330 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:02:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2025-04-13 18:02:24,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 1890. [2025-04-13 18:02:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 3.5103229221810484) internal successors, (6631), 1889 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 6631 transitions. [2025-04-13 18:02:24,258 INFO L79 Accepts]: Start accepts. Automaton has 1890 states and 6631 transitions. Word has length 19 [2025-04-13 18:02:24,258 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:24,258 INFO L485 AbstractCegarLoop]: Abstraction has 1890 states and 6631 transitions. [2025-04-13 18:02:24,258 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:24,258 INFO L278 IsEmpty]: Start isEmpty. Operand 1890 states and 6631 transitions. [2025-04-13 18:02:24,261 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:24,261 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:24,261 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:24,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2025-04-13 18:02:24,461 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2025-04-13 18:02:24,461 INFO L403 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:24,462 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:24,462 INFO L85 PathProgramCache]: Analyzing trace with hash 732030557, now seen corresponding path program 145 times [2025-04-13 18:02:24,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:24,462 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792671824] [2025-04-13 18:02:24,462 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:24,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:24,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:02:24,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:24,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:24,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:24,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:24,524 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792671824] [2025-04-13 18:02:24,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792671824] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:24,524 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302241608] [2025-04-13 18:02:24,524 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:24,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:24,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:24,526 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:24,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2025-04-13 18:02:24,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:02:24,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:24,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:24,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:24,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:24,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:24,618 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:24,618 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:24,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302241608] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:24,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:24,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:02:24,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234175372] [2025-04-13 18:02:24,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:24,650 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:02:24,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:24,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:02:24,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:02:24,650 INFO L87 Difference]: Start difference. First operand 1890 states and 6631 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:26,748 INFO L93 Difference]: Finished difference Result 2565 states and 8889 transitions. [2025-04-13 18:02:26,748 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:02:26,748 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:26,748 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:26,754 INFO L225 Difference]: With dead ends: 2565 [2025-04-13 18:02:26,754 INFO L226 Difference]: Without dead ends: 2545 [2025-04-13 18:02:26,754 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:02:26,754 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:26,754 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:26,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2025-04-13 18:02:27,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2022. [2025-04-13 18:02:27,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 2021 states have (on average 3.528451261751608) internal successors, (7131), 2021 states have internal predecessors, (7131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 7131 transitions. [2025-04-13 18:02:27,811 INFO L79 Accepts]: Start accepts. Automaton has 2022 states and 7131 transitions. Word has length 19 [2025-04-13 18:02:27,811 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:27,811 INFO L485 AbstractCegarLoop]: Abstraction has 2022 states and 7131 transitions. [2025-04-13 18:02:27,811 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:27,811 INFO L278 IsEmpty]: Start isEmpty. Operand 2022 states and 7131 transitions. [2025-04-13 18:02:27,814 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:27,814 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:27,815 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:27,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2025-04-13 18:02:28,015 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2025-04-13 18:02:28,015 INFO L403 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:28,015 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:28,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1505017634, now seen corresponding path program 146 times [2025-04-13 18:02:28,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:28,015 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152963298] [2025-04-13 18:02:28,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:28,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:28,019 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:28,024 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:28,024 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:28,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:28,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:28,111 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152963298] [2025-04-13 18:02:28,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152963298] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:28,111 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639996321] [2025-04-13 18:02:28,111 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:28,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:28,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:28,113 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:28,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2025-04-13 18:02:28,149 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:28,164 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:28,164 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:28,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:28,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:28,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:28,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:28,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639996321] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:28,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:28,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:02:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657586094] [2025-04-13 18:02:28,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:28,248 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:02:28,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:28,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:02:28,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:02:28,249 INFO L87 Difference]: Start difference. First operand 2022 states and 7131 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:30,549 INFO L93 Difference]: Finished difference Result 2498 states and 8760 transitions. [2025-04-13 18:02:30,549 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:02:30,549 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:30,549 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:30,555 INFO L225 Difference]: With dead ends: 2498 [2025-04-13 18:02:30,555 INFO L226 Difference]: Without dead ends: 2487 [2025-04-13 18:02:30,555 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=596, Invalid=1210, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:02:30,555 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:30,555 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:02:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2025-04-13 18:02:31,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 2064. [2025-04-13 18:02:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2063 states have (on average 3.546291808046534) internal successors, (7316), 2063 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 7316 transitions. [2025-04-13 18:02:31,526 INFO L79 Accepts]: Start accepts. Automaton has 2064 states and 7316 transitions. Word has length 19 [2025-04-13 18:02:31,526 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:31,526 INFO L485 AbstractCegarLoop]: Abstraction has 2064 states and 7316 transitions. [2025-04-13 18:02:31,527 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:31,527 INFO L278 IsEmpty]: Start isEmpty. Operand 2064 states and 7316 transitions. [2025-04-13 18:02:31,529 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:31,529 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:31,529 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:31,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2025-04-13 18:02:31,729 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2025-04-13 18:02:31,730 INFO L403 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:31,730 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash -989083712, now seen corresponding path program 147 times [2025-04-13 18:02:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:31,730 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131814693] [2025-04-13 18:02:31,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:31,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:31,733 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:31,738 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:31,738 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:31,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:31,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:31,797 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131814693] [2025-04-13 18:02:31,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131814693] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:31,797 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522396185] [2025-04-13 18:02:31,797 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:31,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:31,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:31,799 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:31,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2025-04-13 18:02:31,829 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:31,844 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:31,845 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:31,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:31,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:31,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:31,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:31,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522396185] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:31,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:31,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:02:31,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560107937] [2025-04-13 18:02:31,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:31,923 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:02:31,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:31,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:02:31,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:02:31,924 INFO L87 Difference]: Start difference. First operand 2064 states and 7316 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:33,872 INFO L93 Difference]: Finished difference Result 2305 states and 8038 transitions. [2025-04-13 18:02:33,872 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:02:33,872 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:33,872 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:33,885 INFO L225 Difference]: With dead ends: 2305 [2025-04-13 18:02:33,885 INFO L226 Difference]: Without dead ends: 2292 [2025-04-13 18:02:33,886 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=385, Invalid=805, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:02:33,886 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:33,886 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:33,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2025-04-13 18:02:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 1924. [2025-04-13 18:02:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 3.5205408216328653) internal successors, (6770), 1923 states have internal predecessors, (6770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:34,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 6770 transitions. [2025-04-13 18:02:34,830 INFO L79 Accepts]: Start accepts. Automaton has 1924 states and 6770 transitions. Word has length 19 [2025-04-13 18:02:34,830 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:34,830 INFO L485 AbstractCegarLoop]: Abstraction has 1924 states and 6770 transitions. [2025-04-13 18:02:34,830 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:34,830 INFO L278 IsEmpty]: Start isEmpty. Operand 1924 states and 6770 transitions. [2025-04-13 18:02:34,832 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:34,832 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:34,832 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:34,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2025-04-13 18:02:35,033 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:35,033 INFO L403 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:35,033 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:35,033 INFO L85 PathProgramCache]: Analyzing trace with hash -127438619, now seen corresponding path program 148 times [2025-04-13 18:02:35,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:35,033 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508017012] [2025-04-13 18:02:35,033 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:35,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:35,036 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:35,039 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:35,039 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:35,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:35,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:35,092 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508017012] [2025-04-13 18:02:35,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508017012] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:35,092 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79936981] [2025-04-13 18:02:35,092 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:35,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:35,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:35,094 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:35,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2025-04-13 18:02:35,124 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:35,139 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:35,139 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:35,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:35,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:35,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:35,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79936981] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:35,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:35,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2025-04-13 18:02:35,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778922201] [2025-04-13 18:02:35,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:35,215 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:02:35,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:35,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:02:35,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:02:35,215 INFO L87 Difference]: Start difference. First operand 1924 states and 6770 transitions. Second operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:37,502 INFO L93 Difference]: Finished difference Result 2520 states and 8615 transitions. [2025-04-13 18:02:37,502 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-04-13 18:02:37,502 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:37,502 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:37,507 INFO L225 Difference]: With dead ends: 2520 [2025-04-13 18:02:37,507 INFO L226 Difference]: Without dead ends: 2506 [2025-04-13 18:02:37,508 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=501, Invalid=1221, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:02:37,508 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:37,508 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:02:37,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2025-04-13 18:02:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 1828. [2025-04-13 18:02:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1827 states have (on average 3.477832512315271) internal successors, (6354), 1827 states have internal predecessors, (6354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 6354 transitions. [2025-04-13 18:02:38,446 INFO L79 Accepts]: Start accepts. Automaton has 1828 states and 6354 transitions. Word has length 19 [2025-04-13 18:02:38,446 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:38,446 INFO L485 AbstractCegarLoop]: Abstraction has 1828 states and 6354 transitions. [2025-04-13 18:02:38,446 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:38,446 INFO L278 IsEmpty]: Start isEmpty. Operand 1828 states and 6354 transitions. [2025-04-13 18:02:38,448 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:38,448 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:38,448 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:38,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2025-04-13 18:02:38,649 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:38,649 INFO L403 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:38,649 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:38,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1575974624, now seen corresponding path program 149 times [2025-04-13 18:02:38,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:38,649 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420745621] [2025-04-13 18:02:38,649 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:02:38,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:38,652 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:38,656 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:38,656 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:02:38,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:38,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:38,711 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420745621] [2025-04-13 18:02:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420745621] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:38,711 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619380978] [2025-04-13 18:02:38,711 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:02:38,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:38,713 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:38,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2025-04-13 18:02:38,743 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:38,758 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:38,758 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:02:38,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:38,758 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:38,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:38,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:38,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619380978] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:38,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:38,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-04-13 18:02:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021008619] [2025-04-13 18:02:38,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:38,842 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:02:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:38,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:02:38,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:02:38,843 INFO L87 Difference]: Start difference. First operand 1828 states and 6354 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:41,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:41,415 INFO L93 Difference]: Finished difference Result 2083 states and 7015 transitions. [2025-04-13 18:02:41,416 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-04-13 18:02:41,416 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:41,416 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:41,420 INFO L225 Difference]: With dead ends: 2083 [2025-04-13 18:02:41,420 INFO L226 Difference]: Without dead ends: 2076 [2025-04-13 18:02:41,421 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=576, Invalid=1404, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 18:02:41,421 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:41,421 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2025-04-13 18:02:42,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1832. [2025-04-13 18:02:42,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1832 states, 1831 states have (on average 3.4778809393773895) internal successors, (6368), 1831 states have internal predecessors, (6368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1832 states to 1832 states and 6368 transitions. [2025-04-13 18:02:42,369 INFO L79 Accepts]: Start accepts. Automaton has 1832 states and 6368 transitions. Word has length 19 [2025-04-13 18:02:42,369 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:42,369 INFO L485 AbstractCegarLoop]: Abstraction has 1832 states and 6368 transitions. [2025-04-13 18:02:42,369 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:42,369 INFO L278 IsEmpty]: Start isEmpty. Operand 1832 states and 6368 transitions. [2025-04-13 18:02:42,371 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:42,371 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:42,371 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:42,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Ended with exit code 0 [2025-04-13 18:02:42,571 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:42,571 INFO L403 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:42,572 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:42,572 INFO L85 PathProgramCache]: Analyzing trace with hash 291326632, now seen corresponding path program 150 times [2025-04-13 18:02:42,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:42,572 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960118036] [2025-04-13 18:02:42,572 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:42,575 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:42,578 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:42,578 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:02:42,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:42,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:42,642 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960118036] [2025-04-13 18:02:42,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960118036] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:42,642 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805797597] [2025-04-13 18:02:42,642 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:42,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:42,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:42,644 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:42,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2025-04-13 18:02:42,674 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:42,689 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:42,689 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:02:42,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:42,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:42,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:42,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:02:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805797597] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:42,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:42,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 18 [2025-04-13 18:02:42,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750714773] [2025-04-13 18:02:42,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:42,778 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:02:42,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:42,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:02:42,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:02:42,779 INFO L87 Difference]: Start difference. First operand 1832 states and 6368 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:45,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:45,611 INFO L93 Difference]: Finished difference Result 2218 states and 7453 transitions. [2025-04-13 18:02:45,611 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 18:02:45,611 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:45,611 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:45,616 INFO L225 Difference]: With dead ends: 2218 [2025-04-13 18:02:45,616 INFO L226 Difference]: Without dead ends: 2202 [2025-04-13 18:02:45,616 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=414, Invalid=1068, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:02:45,617 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:45,617 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:02:45,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2025-04-13 18:02:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1862. [2025-04-13 18:02:46,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 3.4750134336378293) internal successors, (6467), 1861 states have internal predecessors, (6467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 6467 transitions. [2025-04-13 18:02:46,609 INFO L79 Accepts]: Start accepts. Automaton has 1862 states and 6467 transitions. Word has length 19 [2025-04-13 18:02:46,609 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:46,609 INFO L485 AbstractCegarLoop]: Abstraction has 1862 states and 6467 transitions. [2025-04-13 18:02:46,609 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:46,609 INFO L278 IsEmpty]: Start isEmpty. Operand 1862 states and 6467 transitions. [2025-04-13 18:02:46,611 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:46,611 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:46,611 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:46,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2025-04-13 18:02:46,812 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:46,812 INFO L403 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:46,812 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:46,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2105418272, now seen corresponding path program 151 times [2025-04-13 18:02:46,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:46,812 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630813502] [2025-04-13 18:02:46,812 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:46,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:46,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:02:46,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:46,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:46,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:02:46,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:46,880 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630813502] [2025-04-13 18:02:46,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630813502] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:46,880 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58274000] [2025-04-13 18:02:46,880 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:46,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:46,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:46,882 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:46,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2025-04-13 18:02:46,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:02:46,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:46,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:46,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:46,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:46,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:46,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:02:47,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58274000] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:47,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:47,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2025-04-13 18:02:47,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289157590] [2025-04-13 18:02:47,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:47,014 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:02:47,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:47,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:02:47,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:02:47,014 INFO L87 Difference]: Start difference. First operand 1862 states and 6467 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:49,630 INFO L93 Difference]: Finished difference Result 2261 states and 7657 transitions. [2025-04-13 18:02:49,630 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 18:02:49,630 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:49,631 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:49,635 INFO L225 Difference]: With dead ends: 2261 [2025-04-13 18:02:49,636 INFO L226 Difference]: Without dead ends: 2248 [2025-04-13 18:02:49,636 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=393, Invalid=939, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:02:49,636 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:49,636 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:02:49,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2025-04-13 18:02:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1842. [2025-04-13 18:02:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 3.472569255839218) internal successors, (6393), 1841 states have internal predecessors, (6393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 6393 transitions. [2025-04-13 18:02:50,625 INFO L79 Accepts]: Start accepts. Automaton has 1842 states and 6393 transitions. Word has length 19 [2025-04-13 18:02:50,626 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:50,626 INFO L485 AbstractCegarLoop]: Abstraction has 1842 states and 6393 transitions. [2025-04-13 18:02:50,626 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:50,626 INFO L278 IsEmpty]: Start isEmpty. Operand 1842 states and 6393 transitions. [2025-04-13 18:02:50,628 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:50,628 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:50,628 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:50,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2025-04-13 18:02:50,828 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable164 [2025-04-13 18:02:50,828 INFO L403 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:50,828 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:50,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1835140008, now seen corresponding path program 152 times [2025-04-13 18:02:50,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:50,829 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48356226] [2025-04-13 18:02:50,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:50,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:50,832 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:50,835 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:50,835 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:50,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:02:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:50,890 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48356226] [2025-04-13 18:02:50,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48356226] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:50,890 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692840025] [2025-04-13 18:02:50,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:50,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:50,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:50,892 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:50,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2025-04-13 18:02:50,922 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:50,938 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:50,938 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:50,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:50,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:50,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:50,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:02:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692840025] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:51,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:51,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2025-04-13 18:02:51,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274943409] [2025-04-13 18:02:51,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:51,026 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:02:51,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:51,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:02:51,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:02:51,026 INFO L87 Difference]: Start difference. First operand 1842 states and 6393 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:53,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:53,449 INFO L93 Difference]: Finished difference Result 2311 states and 8001 transitions. [2025-04-13 18:02:53,450 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 18:02:53,450 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:53,450 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:53,454 INFO L225 Difference]: With dead ends: 2311 [2025-04-13 18:02:53,454 INFO L226 Difference]: Without dead ends: 2300 [2025-04-13 18:02:53,455 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=522, Invalid=1118, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:02:53,455 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:53,455 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:53,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2025-04-13 18:02:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 1880. [2025-04-13 18:02:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1879 states have (on average 3.4890899414582224) internal successors, (6556), 1879 states have internal predecessors, (6556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 6556 transitions. [2025-04-13 18:02:54,471 INFO L79 Accepts]: Start accepts. Automaton has 1880 states and 6556 transitions. Word has length 19 [2025-04-13 18:02:54,471 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:54,471 INFO L485 AbstractCegarLoop]: Abstraction has 1880 states and 6556 transitions. [2025-04-13 18:02:54,471 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:54,471 INFO L278 IsEmpty]: Start isEmpty. Operand 1880 states and 6556 transitions. [2025-04-13 18:02:54,474 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:54,474 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:54,474 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:54,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2025-04-13 18:02:54,674 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:54,674 INFO L403 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:54,674 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:54,675 INFO L85 PathProgramCache]: Analyzing trace with hash -658961338, now seen corresponding path program 153 times [2025-04-13 18:02:54,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:54,675 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898115750] [2025-04-13 18:02:54,675 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:54,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:54,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:54,685 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:54,685 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:54,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:02:54,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:54,753 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898115750] [2025-04-13 18:02:54,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898115750] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:54,753 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633853446] [2025-04-13 18:02:54,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:54,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:54,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:54,754 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:54,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2025-04-13 18:02:54,784 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:02:54,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:54,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:54,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:54,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:54,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:54,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:02:54,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633853446] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:54,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:54,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2025-04-13 18:02:54,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990871273] [2025-04-13 18:02:54,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:54,883 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:02:54,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:54,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:02:54,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:02:54,883 INFO L87 Difference]: Start difference. First operand 1880 states and 6556 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:56,986 INFO L93 Difference]: Finished difference Result 2147 states and 7411 transitions. [2025-04-13 18:02:56,986 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:02:56,986 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:02:56,986 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:56,991 INFO L225 Difference]: With dead ends: 2147 [2025-04-13 18:02:56,991 INFO L226 Difference]: Without dead ends: 2132 [2025-04-13 18:02:56,991 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=333, Invalid=789, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:02:56,991 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:56,991 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:02:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2025-04-13 18:02:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1772. [2025-04-13 18:02:57,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1772 states, 1771 states have (on average 3.4624505928853755) internal successors, (6132), 1771 states have internal predecessors, (6132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 6132 transitions. [2025-04-13 18:02:57,977 INFO L79 Accepts]: Start accepts. Automaton has 1772 states and 6132 transitions. Word has length 19 [2025-04-13 18:02:57,977 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:57,977 INFO L485 AbstractCegarLoop]: Abstraction has 1772 states and 6132 transitions. [2025-04-13 18:02:57,977 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:57,977 INFO L278 IsEmpty]: Start isEmpty. Operand 1772 states and 6132 transitions. [2025-04-13 18:02:57,979 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:02:57,979 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:57,980 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:57,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2025-04-13 18:02:58,180 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:58,180 INFO L403 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:02:58,180 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1051651970, now seen corresponding path program 154 times [2025-04-13 18:02:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:58,180 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557064005] [2025-04-13 18:02:58,181 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:58,183 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:58,186 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:58,186 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:58,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:58,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:58,240 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557064005] [2025-04-13 18:02:58,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557064005] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:58,240 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674722487] [2025-04-13 18:02:58,240 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:58,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:58,242 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:02:58,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2025-04-13 18:02:58,271 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:02:58,286 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:02:58,286 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:58,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:58,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:02:58,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:58,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:02:58,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674722487] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:58,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:58,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-04-13 18:02:58,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25129915] [2025-04-13 18:02:58,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:58,362 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:02:58,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:58,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:02:58,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:02:58,363 INFO L87 Difference]: Start difference. First operand 1772 states and 6132 transitions. Second operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:00,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:00,510 INFO L93 Difference]: Finished difference Result 2071 states and 7099 transitions. [2025-04-13 18:03:00,510 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:03:00,510 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:00,510 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:00,515 INFO L225 Difference]: With dead ends: 2071 [2025-04-13 18:03:00,515 INFO L226 Difference]: Without dead ends: 2056 [2025-04-13 18:03:00,516 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:03:00,516 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:00,516 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:03:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2025-04-13 18:03:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1794. [2025-04-13 18:03:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1793 states have (on average 3.4651422197434467) internal successors, (6213), 1793 states have internal predecessors, (6213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:01,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 6213 transitions. [2025-04-13 18:03:01,528 INFO L79 Accepts]: Start accepts. Automaton has 1794 states and 6213 transitions. Word has length 19 [2025-04-13 18:03:01,528 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:01,528 INFO L485 AbstractCegarLoop]: Abstraction has 1794 states and 6213 transitions. [2025-04-13 18:03:01,528 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:01,528 INFO L278 IsEmpty]: Start isEmpty. Operand 1794 states and 6213 transitions. [2025-04-13 18:03:01,530 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:01,531 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:01,531 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:01,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2025-04-13 18:03:01,731 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2025-04-13 18:03:01,731 INFO L403 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:01,731 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1705189376, now seen corresponding path program 155 times [2025-04-13 18:03:01,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:01,731 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223366111] [2025-04-13 18:03:01,732 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:03:01,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:01,734 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:03:01,738 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:01,738 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:03:01,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:01,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:01,793 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223366111] [2025-04-13 18:03:01,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223366111] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:01,793 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130189831] [2025-04-13 18:03:01,793 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:03:01,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:01,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:01,795 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:01,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2025-04-13 18:03:01,824 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:03:01,839 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:01,839 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:03:01,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:01,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:01,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:01,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:01,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130189831] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:01,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:01,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:03:01,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483844789] [2025-04-13 18:03:01,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:01,930 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:03:01,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:01,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:03:01,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:03:01,931 INFO L87 Difference]: Start difference. First operand 1794 states and 6213 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18:03:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:04,806 INFO L93 Difference]: Finished difference Result 2061 states and 6928 transitions. [2025-04-13 18:03:04,807 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-04-13 18:03:04,807 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 19 [2025-04-13 18:03:04,807 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:04,812 INFO L225 Difference]: With dead ends: 2061 [2025-04-13 18:03:04,812 INFO L226 Difference]: Without dead ends: 2054 [2025-04-13 18:03:04,812 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=650, Invalid=1702, Unknown=0, NotChecked=0, Total=2352 [2025-04-13 18:03:04,812 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:04,812 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:03:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2025-04-13 18:03:05,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1776. [2025-04-13 18:03:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1775 states have (on average 3.4625352112676056) internal successors, (6146), 1775 states have internal predecessors, (6146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 6146 transitions. [2025-04-13 18:03:05,815 INFO L79 Accepts]: Start accepts. Automaton has 1776 states and 6146 transitions. Word has length 19 [2025-04-13 18:03:05,815 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:05,815 INFO L485 AbstractCegarLoop]: Abstraction has 1776 states and 6146 transitions. [2025-04-13 18:03:05,815 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18:03:05,815 INFO L278 IsEmpty]: Start isEmpty. Operand 1776 states and 6146 transitions. [2025-04-13 18:03:05,817 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:05,817 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:05,817 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:05,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2025-04-13 18:03:06,017 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2025-04-13 18:03:06,018 INFO L403 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:06,018 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:06,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1903676322, now seen corresponding path program 156 times [2025-04-13 18:03:06,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:06,018 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114832214] [2025-04-13 18:03:06,018 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:03:06,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:06,021 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:03:06,025 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:06,025 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:03:06,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:06,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:06,084 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114832214] [2025-04-13 18:03:06,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114832214] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:06,084 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72571037] [2025-04-13 18:03:06,084 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:03:06,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:06,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:06,086 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:06,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2025-04-13 18:03:06,116 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:03:06,136 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:06,136 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:03:06,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:06,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:06,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:06,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:03:06,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72571037] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:06,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:06,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2025-04-13 18:03:06,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506825209] [2025-04-13 18:03:06,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:06,255 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:03:06,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:06,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:03:06,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:03:06,255 INFO L87 Difference]: Start difference. First operand 1776 states and 6146 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:09,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:09,506 INFO L93 Difference]: Finished difference Result 2291 states and 7705 transitions. [2025-04-13 18:03:09,506 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 18:03:09,506 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:09,507 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:09,511 INFO L225 Difference]: With dead ends: 2291 [2025-04-13 18:03:09,512 INFO L226 Difference]: Without dead ends: 2275 [2025-04-13 18:03:09,512 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 21 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:03:09,512 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:09,512 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:03:09,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2025-04-13 18:03:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 1782. [2025-04-13 18:03:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1781 states have (on average 3.45592363840539) internal successors, (6155), 1781 states have internal predecessors, (6155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 6155 transitions. [2025-04-13 18:03:10,550 INFO L79 Accepts]: Start accepts. Automaton has 1782 states and 6155 transitions. Word has length 19 [2025-04-13 18:03:10,550 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:10,550 INFO L485 AbstractCegarLoop]: Abstraction has 1782 states and 6155 transitions. [2025-04-13 18:03:10,550 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:10,551 INFO L278 IsEmpty]: Start isEmpty. Operand 1782 states and 6155 transitions. [2025-04-13 18:03:10,553 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:10,553 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:10,553 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:10,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2025-04-13 18:03:10,753 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2025-04-13 18:03:10,753 INFO L403 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:10,753 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash -999414848, now seen corresponding path program 157 times [2025-04-13 18:03:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:10,754 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501950604] [2025-04-13 18:03:10,754 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:03:10,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:10,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:03:10,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:10,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:03:10,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:03:10,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:10,814 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501950604] [2025-04-13 18:03:10,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501950604] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:10,814 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835644129] [2025-04-13 18:03:10,814 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:03:10,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:10,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:10,816 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:10,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2025-04-13 18:03:10,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:03:10,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:10,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:03:10,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:10,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:10,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:10,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:03:10,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835644129] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:10,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:10,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 18 [2025-04-13 18:03:10,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649968209] [2025-04-13 18:03:10,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:10,950 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:03:10,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:10,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:03:10,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:03:10,951 INFO L87 Difference]: Start difference. First operand 1782 states and 6155 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:14,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:14,224 INFO L93 Difference]: Finished difference Result 2570 states and 8791 transitions. [2025-04-13 18:03:14,224 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:03:14,224 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:14,224 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:14,230 INFO L225 Difference]: With dead ends: 2570 [2025-04-13 18:03:14,230 INFO L226 Difference]: Without dead ends: 2558 [2025-04-13 18:03:14,230 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=499, Invalid=1223, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:03:14,230 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:14,230 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:03:14,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2025-04-13 18:03:15,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1930. [2025-04-13 18:03:15,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 3.4738206324520475) internal successors, (6701), 1929 states have internal predecessors, (6701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 6701 transitions. [2025-04-13 18:03:15,409 INFO L79 Accepts]: Start accepts. Automaton has 1930 states and 6701 transitions. Word has length 19 [2025-04-13 18:03:15,409 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:15,409 INFO L485 AbstractCegarLoop]: Abstraction has 1930 states and 6701 transitions. [2025-04-13 18:03:15,410 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:15,410 INFO L278 IsEmpty]: Start isEmpty. Operand 1930 states and 6701 transitions. [2025-04-13 18:03:15,412 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:15,412 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:15,412 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:15,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2025-04-13 18:03:15,612 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:15,612 INFO L403 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:15,613 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:15,613 INFO L85 PathProgramCache]: Analyzing trace with hash -815968286, now seen corresponding path program 158 times [2025-04-13 18:03:15,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:15,613 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286009292] [2025-04-13 18:03:15,613 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:03:15,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:15,616 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:03:15,619 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:15,619 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:03:15,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:03:15,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:15,670 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286009292] [2025-04-13 18:03:15,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286009292] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:15,670 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337430269] [2025-04-13 18:03:15,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:03:15,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:15,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:15,672 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:15,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2025-04-13 18:03:15,701 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:03:15,716 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:15,717 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:03:15,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:15,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:15,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:15,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:03:15,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337430269] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:15,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:15,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 18 [2025-04-13 18:03:15,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660301831] [2025-04-13 18:03:15,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:15,809 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:03:15,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:15,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:03:15,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:03:15,809 INFO L87 Difference]: Start difference. First operand 1930 states and 6701 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:18,810 INFO L93 Difference]: Finished difference Result 2523 states and 8732 transitions. [2025-04-13 18:03:18,810 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:03:18,810 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:18,810 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:18,816 INFO L225 Difference]: With dead ends: 2523 [2025-04-13 18:03:18,816 INFO L226 Difference]: Without dead ends: 2512 [2025-04-13 18:03:18,816 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=564, Invalid=1242, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:03:18,817 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:18,817 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:03:18,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2025-04-13 18:03:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 1998. [2025-04-13 18:03:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1997 states have (on average 3.4847270906359538) internal successors, (6959), 1997 states have internal predecessors, (6959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:20,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 6959 transitions. [2025-04-13 18:03:20,041 INFO L79 Accepts]: Start accepts. Automaton has 1998 states and 6959 transitions. Word has length 19 [2025-04-13 18:03:20,041 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:20,041 INFO L485 AbstractCegarLoop]: Abstraction has 1998 states and 6959 transitions. [2025-04-13 18:03:20,041 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:20,041 INFO L278 IsEmpty]: Start isEmpty. Operand 1998 states and 6959 transitions. [2025-04-13 18:03:20,044 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:20,044 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:20,044 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:20,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2025-04-13 18:03:20,244 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2025-04-13 18:03:20,244 INFO L403 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:20,244 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:20,244 INFO L85 PathProgramCache]: Analyzing trace with hash 984897664, now seen corresponding path program 159 times [2025-04-13 18:03:20,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:20,245 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270416370] [2025-04-13 18:03:20,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:03:20,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:20,247 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:03:20,253 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:20,253 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:03:20,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:03:20,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:20,306 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270416370] [2025-04-13 18:03:20,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270416370] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:20,307 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813713360] [2025-04-13 18:03:20,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:03:20,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:20,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:20,308 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:20,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2025-04-13 18:03:20,339 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:03:20,356 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:20,356 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:03:20,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:20,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:20,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:20,413 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:03:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813713360] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:20,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:20,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 18 [2025-04-13 18:03:20,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604824535] [2025-04-13 18:03:20,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:20,447 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:03:20,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:20,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:03:20,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:03:20,447 INFO L87 Difference]: Start difference. First operand 1998 states and 6959 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:23,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:23,104 INFO L93 Difference]: Finished difference Result 2417 states and 8352 transitions. [2025-04-13 18:03:23,105 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:03:23,105 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:23,105 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:23,110 INFO L225 Difference]: With dead ends: 2417 [2025-04-13 18:03:23,110 INFO L226 Difference]: Without dead ends: 2400 [2025-04-13 18:03:23,111 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=343, Invalid=847, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:03:23,111 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:23,111 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:03:23,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2025-04-13 18:03:24,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 1918. [2025-04-13 18:03:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1918 states, 1917 states have (on average 3.470526864893062) internal successors, (6653), 1917 states have internal predecessors, (6653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 6653 transitions. [2025-04-13 18:03:24,315 INFO L79 Accepts]: Start accepts. Automaton has 1918 states and 6653 transitions. Word has length 19 [2025-04-13 18:03:24,315 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:24,315 INFO L485 AbstractCegarLoop]: Abstraction has 1918 states and 6653 transitions. [2025-04-13 18:03:24,315 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:24,316 INFO L278 IsEmpty]: Start isEmpty. Operand 1918 states and 6653 transitions. [2025-04-13 18:03:24,318 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:24,318 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:24,318 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:24,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2025-04-13 18:03:24,518 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2025-04-13 18:03:24,519 INFO L403 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:24,519 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:24,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1599456324, now seen corresponding path program 160 times [2025-04-13 18:03:24,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:24,519 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796642133] [2025-04-13 18:03:24,519 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:03:24,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:24,522 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:03:24,525 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:24,526 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:03:24,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:03:24,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:24,590 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796642133] [2025-04-13 18:03:24,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796642133] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:24,590 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989121655] [2025-04-13 18:03:24,590 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:03:24,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:24,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:24,592 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:24,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2025-04-13 18:03:24,623 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:03:24,639 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:24,639 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:03:24,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:24,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:24,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:24,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:03:24,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989121655] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:24,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:24,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 17 [2025-04-13 18:03:24,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488307822] [2025-04-13 18:03:24,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:24,726 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:03:24,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:24,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:03:24,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:03:24,727 INFO L87 Difference]: Start difference. First operand 1918 states and 6653 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:27,439 INFO L93 Difference]: Finished difference Result 2459 states and 8457 transitions. [2025-04-13 18:03:27,440 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:03:27,440 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:27,440 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:27,446 INFO L225 Difference]: With dead ends: 2459 [2025-04-13 18:03:27,446 INFO L226 Difference]: Without dead ends: 2442 [2025-04-13 18:03:27,446 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=292, Invalid=700, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:03:27,446 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:27,446 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:03:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2025-04-13 18:03:28,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1952. [2025-04-13 18:03:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1951 states have (on average 3.4812916453100975) internal successors, (6792), 1951 states have internal predecessors, (6792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:28,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 6792 transitions. [2025-04-13 18:03:28,679 INFO L79 Accepts]: Start accepts. Automaton has 1952 states and 6792 transitions. Word has length 19 [2025-04-13 18:03:28,679 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:28,679 INFO L485 AbstractCegarLoop]: Abstraction has 1952 states and 6792 transitions. [2025-04-13 18:03:28,679 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:28,679 INFO L278 IsEmpty]: Start isEmpty. Operand 1952 states and 6792 transitions. [2025-04-13 18:03:28,681 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:28,681 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:28,681 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:28,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2025-04-13 18:03:28,882 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:28,882 INFO L403 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:28,882 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash -110051328, now seen corresponding path program 161 times [2025-04-13 18:03:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:28,882 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544717609] [2025-04-13 18:03:28,882 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:03:28,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:28,885 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:03:28,889 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:28,889 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:03:28,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:28,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:28,945 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544717609] [2025-04-13 18:03:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544717609] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:28,945 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316687381] [2025-04-13 18:03:28,945 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:03:28,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:28,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:28,947 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:28,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2025-04-13 18:03:28,977 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:03:28,992 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:28,992 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:03:28,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:28,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:28,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:29,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:29,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316687381] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:29,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:29,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:03:29,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758423395] [2025-04-13 18:03:29,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:29,075 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:03:29,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:29,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:03:29,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:03:29,075 INFO L87 Difference]: Start difference. First operand 1952 states and 6792 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:31,875 INFO L93 Difference]: Finished difference Result 2427 states and 8321 transitions. [2025-04-13 18:03:31,875 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:03:31,875 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:31,875 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:31,880 INFO L225 Difference]: With dead ends: 2427 [2025-04-13 18:03:31,880 INFO L226 Difference]: Without dead ends: 2408 [2025-04-13 18:03:31,881 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=302, Invalid=820, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:03:31,881 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:31,881 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:03:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2025-04-13 18:03:33,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 1980. [2025-04-13 18:03:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1979 states have (on average 3.4876200101061143) internal successors, (6902), 1979 states have internal predecessors, (6902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 6902 transitions. [2025-04-13 18:03:33,146 INFO L79 Accepts]: Start accepts. Automaton has 1980 states and 6902 transitions. Word has length 19 [2025-04-13 18:03:33,146 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:33,146 INFO L485 AbstractCegarLoop]: Abstraction has 1980 states and 6902 transitions. [2025-04-13 18:03:33,146 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:33,146 INFO L278 IsEmpty]: Start isEmpty. Operand 1980 states and 6902 transitions. [2025-04-13 18:03:33,149 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:33,149 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:33,149 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:33,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2025-04-13 18:03:33,349 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:33,349 INFO L403 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:33,349 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:33,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1415879392, now seen corresponding path program 162 times [2025-04-13 18:03:33,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:33,350 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957546645] [2025-04-13 18:03:33,350 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:03:33,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:33,352 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:03:33,357 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:33,357 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:03:33,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:33,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:33,423 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957546645] [2025-04-13 18:03:33,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957546645] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:33,423 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600309138] [2025-04-13 18:03:33,423 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:03:33,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:33,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:33,425 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:33,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2025-04-13 18:03:33,455 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:03:33,470 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:33,470 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:03:33,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:33,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:33,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:33,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:33,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600309138] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:33,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:33,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2025-04-13 18:03:33,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021250733] [2025-04-13 18:03:33,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:33,586 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:03:33,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:33,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:03:33,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:03:33,586 INFO L87 Difference]: Start difference. First operand 1980 states and 6902 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:37,543 INFO L93 Difference]: Finished difference Result 2521 states and 8567 transitions. [2025-04-13 18:03:37,543 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-04-13 18:03:37,543 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:37,543 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:37,549 INFO L225 Difference]: With dead ends: 2521 [2025-04-13 18:03:37,549 INFO L226 Difference]: Without dead ends: 2514 [2025-04-13 18:03:37,549 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=890, Invalid=2892, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 18:03:37,549 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:37,549 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:03:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2025-04-13 18:03:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2082. [2025-04-13 18:03:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2081 states have (on average 3.4776549735703988) internal successors, (7237), 2081 states have internal predecessors, (7237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 7237 transitions. [2025-04-13 18:03:38,962 INFO L79 Accepts]: Start accepts. Automaton has 2082 states and 7237 transitions. Word has length 19 [2025-04-13 18:03:38,962 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:38,962 INFO L485 AbstractCegarLoop]: Abstraction has 2082 states and 7237 transitions. [2025-04-13 18:03:38,962 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:38,962 INFO L278 IsEmpty]: Start isEmpty. Operand 2082 states and 7237 transitions. [2025-04-13 18:03:38,965 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:38,965 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:38,965 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:38,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2025-04-13 18:03:39,165 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:39,165 INFO L403 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:39,165 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash 346909160, now seen corresponding path program 163 times [2025-04-13 18:03:39,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:39,166 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822752233] [2025-04-13 18:03:39,166 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:03:39,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:39,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:03:39,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:39,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:03:39,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:39,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:39,229 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822752233] [2025-04-13 18:03:39,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822752233] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:39,229 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305257033] [2025-04-13 18:03:39,229 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:03:39,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:39,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:39,231 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:39,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2025-04-13 18:03:39,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:03:39,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:39,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:03:39,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:39,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:39,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:39,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:39,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:03:39,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305257033] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:39,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:39,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2025-04-13 18:03:39,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705359648] [2025-04-13 18:03:39,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:39,377 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:03:39,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:39,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:03:39,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:03:39,377 INFO L87 Difference]: Start difference. First operand 2082 states and 7237 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:43,419 INFO L93 Difference]: Finished difference Result 2764 states and 9504 transitions. [2025-04-13 18:03:43,419 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 18:03:43,419 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:43,419 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:43,425 INFO L225 Difference]: With dead ends: 2764 [2025-04-13 18:03:43,425 INFO L226 Difference]: Without dead ends: 2753 [2025-04-13 18:03:43,425 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=529, Invalid=1541, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 18:03:43,426 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:43,426 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:03:43,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2025-04-13 18:03:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2272. [2025-04-13 18:03:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 2271 states have (on average 3.490092470277411) internal successors, (7926), 2271 states have internal predecessors, (7926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 7926 transitions. [2025-04-13 18:03:44,985 INFO L79 Accepts]: Start accepts. Automaton has 2272 states and 7926 transitions. Word has length 19 [2025-04-13 18:03:44,985 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:44,985 INFO L485 AbstractCegarLoop]: Abstraction has 2272 states and 7926 transitions. [2025-04-13 18:03:44,985 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:44,986 INFO L278 IsEmpty]: Start isEmpty. Operand 2272 states and 7926 transitions. [2025-04-13 18:03:44,988 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:44,988 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:44,988 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:44,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Ended with exit code 0 [2025-04-13 18:03:45,188 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:45,189 INFO L403 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:45,189 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:45,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1073047072, now seen corresponding path program 164 times [2025-04-13 18:03:45,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:45,189 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611075730] [2025-04-13 18:03:45,189 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:03:45,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:45,192 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:03:45,195 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:45,195 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:03:45,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:45,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:45,252 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611075730] [2025-04-13 18:03:45,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611075730] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:45,252 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899864972] [2025-04-13 18:03:45,252 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:03:45,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:45,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:45,254 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:45,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2025-04-13 18:03:45,284 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:03:45,299 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:45,299 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:03:45,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:45,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:45,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:45,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:03:45,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899864972] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:45,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:45,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 21 [2025-04-13 18:03:45,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493051567] [2025-04-13 18:03:45,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:45,399 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:03:45,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:45,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:03:45,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:03:45,400 INFO L87 Difference]: Start difference. First operand 2272 states and 7926 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:49,658 INFO L93 Difference]: Finished difference Result 3003 states and 10398 transitions. [2025-04-13 18:03:49,659 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 18:03:49,659 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:49,659 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:49,665 INFO L225 Difference]: With dead ends: 3003 [2025-04-13 18:03:49,665 INFO L226 Difference]: Without dead ends: 2996 [2025-04-13 18:03:49,666 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=484, Invalid=1238, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:03:49,666 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:49,666 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:03:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2025-04-13 18:03:51,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2384. [2025-04-13 18:03:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2384 states, 2383 states have (on average 3.5048258497691984) internal successors, (8352), 2383 states have internal predecessors, (8352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 8352 transitions. [2025-04-13 18:03:51,290 INFO L79 Accepts]: Start accepts. Automaton has 2384 states and 8352 transitions. Word has length 19 [2025-04-13 18:03:51,290 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:51,290 INFO L485 AbstractCegarLoop]: Abstraction has 2384 states and 8352 transitions. [2025-04-13 18:03:51,290 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:51,290 INFO L278 IsEmpty]: Start isEmpty. Operand 2384 states and 8352 transitions. [2025-04-13 18:03:51,293 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:51,293 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:51,293 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:51,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2025-04-13 18:03:51,493 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2025-04-13 18:03:51,493 INFO L403 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:51,494 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1395946776, now seen corresponding path program 165 times [2025-04-13 18:03:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:51,494 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385917902] [2025-04-13 18:03:51,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:03:51,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:51,496 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 5 equivalence classes. [2025-04-13 18:03:51,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:51,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-04-13 18:03:51,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:51,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:51,566 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385917902] [2025-04-13 18:03:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385917902] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:51,566 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246101546] [2025-04-13 18:03:51,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:03:51,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:51,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:51,568 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:51,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2025-04-13 18:03:51,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 5 equivalence classes. [2025-04-13 18:03:51,614 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:51,614 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-04-13 18:03:51,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:51,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:51,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:51,675 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:03:51,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246101546] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:51,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:51,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 21 [2025-04-13 18:03:51,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812840591] [2025-04-13 18:03:51,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:51,710 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:03:51,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:51,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:03:51,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:03:51,710 INFO L87 Difference]: Start difference. First operand 2384 states and 8352 transitions. Second operand has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:56,167 INFO L93 Difference]: Finished difference Result 3547 states and 12472 transitions. [2025-04-13 18:03:56,168 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 18:03:56,168 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:03:56,168 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:56,175 INFO L225 Difference]: With dead ends: 3547 [2025-04-13 18:03:56,175 INFO L226 Difference]: Without dead ends: 3540 [2025-04-13 18:03:56,176 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=546, Invalid=1176, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:03:56,176 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:56,176 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:03:56,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2025-04-13 18:03:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 2984. [2025-04-13 18:03:58,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2983 states have (on average 3.5527991954408313) internal successors, (10598), 2983 states have internal predecessors, (10598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:58,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 10598 transitions. [2025-04-13 18:03:58,308 INFO L79 Accepts]: Start accepts. Automaton has 2984 states and 10598 transitions. Word has length 19 [2025-04-13 18:03:58,308 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:58,308 INFO L485 AbstractCegarLoop]: Abstraction has 2984 states and 10598 transitions. [2025-04-13 18:03:58,308 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 21 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:58,308 INFO L278 IsEmpty]: Start isEmpty. Operand 2984 states and 10598 transitions. [2025-04-13 18:03:58,312 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:03:58,312 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:58,312 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:58,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2025-04-13 18:03:58,512 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2025-04-13 18:03:58,512 INFO L403 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:03:58,512 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash 404919174, now seen corresponding path program 166 times [2025-04-13 18:03:58,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:58,512 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845791601] [2025-04-13 18:03:58,512 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:03:58,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:58,515 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:03:58,518 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:58,518 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:03:58,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:03:58,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:58,563 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845791601] [2025-04-13 18:03:58,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845791601] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:58,563 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84563] [2025-04-13 18:03:58,563 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:03:58,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:58,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:58,564 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:03:58,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2025-04-13 18:03:58,594 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:03:58,609 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:03:58,609 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:03:58,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:58,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:03:58,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:58,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:03:58,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84563] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:58,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:58,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2025-04-13 18:03:58,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671526196] [2025-04-13 18:03:58,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:58,687 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:03:58,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:58,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:03:58,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:03:58,687 INFO L87 Difference]: Start difference. First operand 2984 states and 10598 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:04:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:02,439 INFO L93 Difference]: Finished difference Result 3337 states and 11790 transitions. [2025-04-13 18:04:02,439 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:04:02,439 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 19 [2025-04-13 18:04:02,439 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:02,447 INFO L225 Difference]: With dead ends: 3337 [2025-04-13 18:04:02,447 INFO L226 Difference]: Without dead ends: 3326 [2025-04-13 18:04:02,448 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=296, Invalid=574, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:04:02,448 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:02,448 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:02,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2025-04-13 18:04:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 2978. [2025-04-13 18:04:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2977 states have (on average 3.550218340611354) internal successors, (10569), 2977 states have internal predecessors, (10569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 10569 transitions. [2025-04-13 18:04:04,574 INFO L79 Accepts]: Start accepts. Automaton has 2978 states and 10569 transitions. Word has length 19 [2025-04-13 18:04:04,574 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:04,574 INFO L485 AbstractCegarLoop]: Abstraction has 2978 states and 10569 transitions. [2025-04-13 18:04:04,574 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:04:04,574 INFO L278 IsEmpty]: Start isEmpty. Operand 2978 states and 10569 transitions. [2025-04-13 18:04:04,578 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:04:04,578 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:04,578 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:04,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Ended with exit code 0 [2025-04-13 18:04:04,778 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2025-04-13 18:04:04,778 INFO L403 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:04:04,779 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2115532482, now seen corresponding path program 167 times [2025-04-13 18:04:04,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:04,779 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504528786] [2025-04-13 18:04:04,779 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:04:04,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:04,781 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:04:04,785 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:04,785 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:04:04,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:04:04,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:04,832 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504528786] [2025-04-13 18:04:04,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504528786] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:04,832 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058380629] [2025-04-13 18:04:04,832 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:04:04,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:04,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:04,834 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:04:04,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2025-04-13 18:04:04,863 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:04:04,878 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:04,879 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:04:04,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:04,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:04:04,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:04,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:04,960 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:04:04,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058380629] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:04,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:04,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 17 [2025-04-13 18:04:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784068173] [2025-04-13 18:04:04,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:04,961 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:04:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:04,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:04:04,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:04:04,961 INFO L87 Difference]: Start difference. First operand 2978 states and 10569 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18:04:08,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:08,992 INFO L93 Difference]: Finished difference Result 3415 states and 12061 transitions. [2025-04-13 18:04:08,993 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:04:08,993 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 19 [2025-04-13 18:04:08,993 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:09,000 INFO L225 Difference]: With dead ends: 3415 [2025-04-13 18:04:09,001 INFO L226 Difference]: Without dead ends: 3400 [2025-04-13 18:04:09,001 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=250, Invalid=620, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:04:09,001 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:09,001 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2025-04-13 18:04:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3044. [2025-04-13 18:04:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 3043 states have (on average 3.5583305948077557) internal successors, (10828), 3043 states have internal predecessors, (10828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 10828 transitions. [2025-04-13 18:04:11,179 INFO L79 Accepts]: Start accepts. Automaton has 3044 states and 10828 transitions. Word has length 19 [2025-04-13 18:04:11,179 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:11,179 INFO L485 AbstractCegarLoop]: Abstraction has 3044 states and 10828 transitions. [2025-04-13 18:04:11,179 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18:04:11,179 INFO L278 IsEmpty]: Start isEmpty. Operand 3044 states and 10828 transitions. [2025-04-13 18:04:11,183 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:04:11,183 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:11,183 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:11,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2025-04-13 18:04:11,383 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:11,383 INFO L403 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:04:11,383 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:11,384 INFO L85 PathProgramCache]: Analyzing trace with hash -690029818, now seen corresponding path program 168 times [2025-04-13 18:04:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:11,384 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908581277] [2025-04-13 18:04:11,384 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:04:11,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:11,387 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:04:11,391 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:11,391 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:04:11,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:11,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:11,454 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908581277] [2025-04-13 18:04:11,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908581277] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:11,454 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040766529] [2025-04-13 18:04:11,454 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:04:11,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:11,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:11,456 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:04:11,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2025-04-13 18:04:11,485 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:04:11,501 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:11,501 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:04:11,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:11,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:04:11,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:11,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:04:11,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040766529] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:11,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:11,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2025-04-13 18:04:11,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066253001] [2025-04-13 18:04:11,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:11,615 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:04:11,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:11,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:04:11,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:04:11,616 INFO L87 Difference]: Start difference. First operand 3044 states and 10828 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:15,816 INFO L93 Difference]: Finished difference Result 3579 states and 12621 transitions. [2025-04-13 18:04:15,816 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:04:15,817 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:04:15,817 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:15,825 INFO L225 Difference]: With dead ends: 3579 [2025-04-13 18:04:15,825 INFO L226 Difference]: Without dead ends: 3560 [2025-04-13 18:04:15,826 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 18:04:15,826 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:15,826 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:15,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2025-04-13 18:04:18,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3174. [2025-04-13 18:04:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3173 states have (on average 3.5679167979829813) internal successors, (11321), 3173 states have internal predecessors, (11321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:18,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 11321 transitions. [2025-04-13 18:04:18,111 INFO L79 Accepts]: Start accepts. Automaton has 3174 states and 11321 transitions. Word has length 19 [2025-04-13 18:04:18,111 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:18,111 INFO L485 AbstractCegarLoop]: Abstraction has 3174 states and 11321 transitions. [2025-04-13 18:04:18,112 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:18,112 INFO L278 IsEmpty]: Start isEmpty. Operand 3174 states and 11321 transitions. [2025-04-13 18:04:18,116 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:04:18,116 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:18,116 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:18,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2025-04-13 18:04:18,316 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable181 [2025-04-13 18:04:18,316 INFO L403 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:04:18,317 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1763115198, now seen corresponding path program 169 times [2025-04-13 18:04:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:18,317 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911640109] [2025-04-13 18:04:18,317 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:04:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:18,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:04:18,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:18,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:04:18,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:18,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:18,384 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911640109] [2025-04-13 18:04:18,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911640109] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:18,384 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563201854] [2025-04-13 18:04:18,384 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:04:18,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:18,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:18,386 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:04:18,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2025-04-13 18:04:18,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:04:18,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:18,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:04:18,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:18,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:04:18,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:18,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563201854] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:18,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:18,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2025-04-13 18:04:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301419086] [2025-04-13 18:04:18,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:18,544 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:04:18,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:18,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:04:18,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:04:18,545 INFO L87 Difference]: Start difference. First operand 3174 states and 11321 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:22,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:22,937 INFO L93 Difference]: Finished difference Result 3651 states and 12845 transitions. [2025-04-13 18:04:22,937 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 18:04:22,937 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:04:22,937 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:22,945 INFO L225 Difference]: With dead ends: 3651 [2025-04-13 18:04:22,945 INFO L226 Difference]: Without dead ends: 3628 [2025-04-13 18:04:22,946 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:04:22,946 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:22,946 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:04:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3628 states. [2025-04-13 18:04:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3628 to 3226. [2025-04-13 18:04:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3225 states have (on average 3.569302325581395) internal successors, (11511), 3225 states have internal predecessors, (11511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 11511 transitions. [2025-04-13 18:04:25,247 INFO L79 Accepts]: Start accepts. Automaton has 3226 states and 11511 transitions. Word has length 19 [2025-04-13 18:04:25,247 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:25,247 INFO L485 AbstractCegarLoop]: Abstraction has 3226 states and 11511 transitions. [2025-04-13 18:04:25,247 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:25,247 INFO L278 IsEmpty]: Start isEmpty. Operand 3226 states and 11511 transitions. [2025-04-13 18:04:25,251 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:04:25,251 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:25,251 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:25,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2025-04-13 18:04:25,451 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:25,452 INFO L403 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:04:25,452 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:25,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2016604073, now seen corresponding path program 170 times [2025-04-13 18:04:25,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:25,452 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909043841] [2025-04-13 18:04:25,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:04:25,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:25,455 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:04:25,458 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:25,458 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:04:25,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:25,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:25,518 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909043841] [2025-04-13 18:04:25,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909043841] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:25,518 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468108943] [2025-04-13 18:04:25,518 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:04:25,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:25,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:25,520 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:04:25,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2025-04-13 18:04:25,549 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:04:25,565 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:25,565 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:04:25,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:25,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:04:25,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:25,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:25,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468108943] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:25,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:25,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2025-04-13 18:04:25,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310995105] [2025-04-13 18:04:25,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:25,682 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:04:25,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:25,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:04:25,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:04:25,683 INFO L87 Difference]: Start difference. First operand 3226 states and 11511 transitions. Second operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:30,534 INFO L93 Difference]: Finished difference Result 3911 states and 13674 transitions. [2025-04-13 18:04:30,535 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:04:30,535 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:04:30,535 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:30,544 INFO L225 Difference]: With dead ends: 3911 [2025-04-13 18:04:30,544 INFO L226 Difference]: Without dead ends: 3861 [2025-04-13 18:04:30,545 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=419, Invalid=1561, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 18:04:30,545 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:30,545 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:04:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2025-04-13 18:04:32,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3350. [2025-04-13 18:04:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3349 states have (on average 3.5795759928336817) internal successors, (11988), 3349 states have internal predecessors, (11988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 11988 transitions. [2025-04-13 18:04:32,995 INFO L79 Accepts]: Start accepts. Automaton has 3350 states and 11988 transitions. Word has length 19 [2025-04-13 18:04:32,995 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:32,995 INFO L485 AbstractCegarLoop]: Abstraction has 3350 states and 11988 transitions. [2025-04-13 18:04:32,995 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:32,995 INFO L278 IsEmpty]: Start isEmpty. Operand 3350 states and 11988 transitions. [2025-04-13 18:04:33,000 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:04:33,000 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:33,000 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:33,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Ended with exit code 0 [2025-04-13 18:04:33,200 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:33,200 INFO L403 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:04:33,200 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash 459973828, now seen corresponding path program 171 times [2025-04-13 18:04:33,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:33,201 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72424650] [2025-04-13 18:04:33,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:04:33,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:33,203 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:04:33,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:33,209 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:04:33,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:33,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:33,274 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72424650] [2025-04-13 18:04:33,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72424650] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:33,274 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500070762] [2025-04-13 18:04:33,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:04:33,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:33,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:33,276 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:04:33,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2025-04-13 18:04:33,306 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:04:33,321 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:33,322 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:04:33,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:33,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:04:33,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:33,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:33,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500070762] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:33,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:33,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2025-04-13 18:04:33,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711815551] [2025-04-13 18:04:33,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:33,428 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:04:33,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:33,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:04:33,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:04:33,429 INFO L87 Difference]: Start difference. First operand 3350 states and 11988 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:37,893 INFO L93 Difference]: Finished difference Result 3579 states and 12720 transitions. [2025-04-13 18:04:37,894 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-13 18:04:37,894 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:04:37,894 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:37,903 INFO L225 Difference]: With dead ends: 3579 [2025-04-13 18:04:37,903 INFO L226 Difference]: Without dead ends: 3570 [2025-04-13 18:04:37,903 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=728, Invalid=2464, Unknown=0, NotChecked=0, Total=3192 [2025-04-13 18:04:37,904 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:37,904 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:04:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2025-04-13 18:04:40,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 3322. [2025-04-13 18:04:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3321 states have (on average 3.5784402288467327) internal successors, (11884), 3321 states have internal predecessors, (11884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 11884 transitions. [2025-04-13 18:04:40,290 INFO L79 Accepts]: Start accepts. Automaton has 3322 states and 11884 transitions. Word has length 19 [2025-04-13 18:04:40,290 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:40,290 INFO L485 AbstractCegarLoop]: Abstraction has 3322 states and 11884 transitions. [2025-04-13 18:04:40,290 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:40,291 INFO L278 IsEmpty]: Start isEmpty. Operand 3322 states and 11884 transitions. [2025-04-13 18:04:40,295 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:04:40,295 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:40,295 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:40,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Forceful destruction successful, exit code 0 [2025-04-13 18:04:40,496 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:40,496 INFO L403 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:04:40,496 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:40,496 INFO L85 PathProgramCache]: Analyzing trace with hash 254388356, now seen corresponding path program 172 times [2025-04-13 18:04:40,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:40,496 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699368721] [2025-04-13 18:04:40,496 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:04:40,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:40,499 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:04:40,502 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:40,502 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:04:40,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:04:40,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:40,548 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699368721] [2025-04-13 18:04:40,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699368721] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:40,548 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835748895] [2025-04-13 18:04:40,548 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:04:40,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:40,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:40,550 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:04:40,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2025-04-13 18:04:40,581 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:04:40,596 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:40,596 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:04:40,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:40,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:04:40,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:40,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:04:40,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835748895] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:40,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:40,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2025-04-13 18:04:40,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123507434] [2025-04-13 18:04:40,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:40,691 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:04:40,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:40,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:04:40,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:04:40,691 INFO L87 Difference]: Start difference. First operand 3322 states and 11884 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:04:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:44,387 INFO L93 Difference]: Finished difference Result 3378 states and 12049 transitions. [2025-04-13 18:04:44,387 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:04:44,387 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 19 [2025-04-13 18:04:44,387 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:44,396 INFO L225 Difference]: With dead ends: 3378 [2025-04-13 18:04:44,396 INFO L226 Difference]: Without dead ends: 3367 [2025-04-13 18:04:44,396 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:04:44,397 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:44,397 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2025-04-13 18:04:46,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3306. [2025-04-13 18:04:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3306 states, 3305 states have (on average 3.577004538577912) internal successors, (11822), 3305 states have internal predecessors, (11822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 11822 transitions. [2025-04-13 18:04:46,786 INFO L79 Accepts]: Start accepts. Automaton has 3306 states and 11822 transitions. Word has length 19 [2025-04-13 18:04:46,786 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:46,786 INFO L485 AbstractCegarLoop]: Abstraction has 3306 states and 11822 transitions. [2025-04-13 18:04:46,786 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:04:46,786 INFO L278 IsEmpty]: Start isEmpty. Operand 3306 states and 11822 transitions. [2025-04-13 18:04:46,791 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:04:46,791 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:46,791 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:46,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Ended with exit code 0 [2025-04-13 18:04:46,991 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:46,992 INFO L403 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:04:46,992 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:46,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1116033449, now seen corresponding path program 173 times [2025-04-13 18:04:46,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:46,992 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570960233] [2025-04-13 18:04:46,992 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:04:46,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:46,995 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 5 equivalence classes. [2025-04-13 18:04:47,000 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:47,000 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 18:04:47,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:04:47,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:47,049 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570960233] [2025-04-13 18:04:47,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570960233] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:47,049 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614596] [2025-04-13 18:04:47,049 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:04:47,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:47,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:47,051 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:04:47,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2025-04-13 18:04:47,081 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 5 equivalence classes. [2025-04-13 18:04:47,097 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:47,097 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 18:04:47,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:47,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:04:47,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:47,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:04:47,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614596] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:47,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:47,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2025-04-13 18:04:47,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866082319] [2025-04-13 18:04:47,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:47,179 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:04:47,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:47,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:04:47,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:04:47,179 INFO L87 Difference]: Start difference. First operand 3306 states and 11822 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:04:51,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:51,397 INFO L93 Difference]: Finished difference Result 4116 states and 14744 transitions. [2025-04-13 18:04:51,397 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 18:04:51,398 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 19 [2025-04-13 18:04:51,398 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:51,408 INFO L225 Difference]: With dead ends: 4116 [2025-04-13 18:04:51,408 INFO L226 Difference]: Without dead ends: 4096 [2025-04-13 18:04:51,408 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=491, Invalid=841, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:04:51,409 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:51,409 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4096 states. [2025-04-13 18:04:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4096 to 3640. [2025-04-13 18:04:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.5858752404506733) internal successors, (13049), 3639 states have internal predecessors, (13049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 13049 transitions. [2025-04-13 18:04:53,957 INFO L79 Accepts]: Start accepts. Automaton has 3640 states and 13049 transitions. Word has length 19 [2025-04-13 18:04:53,957 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:04:53,957 INFO L485 AbstractCegarLoop]: Abstraction has 3640 states and 13049 transitions. [2025-04-13 18:04:53,957 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:04:53,957 INFO L278 IsEmpty]: Start isEmpty. Operand 3640 states and 13049 transitions. [2025-04-13 18:04:53,962 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:04:53,962 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:04:53,962 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:04:53,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Ended with exit code 0 [2025-04-13 18:04:54,162 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:54,162 INFO L403 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:04:54,162 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:04:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash -53847865, now seen corresponding path program 174 times [2025-04-13 18:04:54,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:04:54,163 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705231220] [2025-04-13 18:04:54,163 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:04:54,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:04:54,165 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:04:54,171 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:54,171 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:04:54,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:04:54,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:04:54,226 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705231220] [2025-04-13 18:04:54,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705231220] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:04:54,226 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952956144] [2025-04-13 18:04:54,226 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:04:54,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:04:54,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:04:54,228 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:04:54,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2025-04-13 18:04:54,258 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:04:54,275 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:04:54,275 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:04:54,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:04:54,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:04:54,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:04:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:54,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:04:54,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952956144] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:54,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:54,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 20 [2025-04-13 18:04:54,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720189412] [2025-04-13 18:04:54,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:54,370 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:04:54,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:54,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:04:54,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:04:54,370 INFO L87 Difference]: Start difference. First operand 3640 states and 13049 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:04:58,471 INFO L93 Difference]: Finished difference Result 3901 states and 13959 transitions. [2025-04-13 18:04:58,471 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:04:58,471 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:04:58,471 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:04:58,481 INFO L225 Difference]: With dead ends: 3901 [2025-04-13 18:04:58,481 INFO L226 Difference]: Without dead ends: 3872 [2025-04-13 18:04:58,481 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=279, Invalid=713, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:04:58,482 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:04:58,482 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:04:58,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2025-04-13 18:05:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 3770. [2025-04-13 18:05:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 3769 states have (on average 3.600955160520032) internal successors, (13572), 3769 states have internal predecessors, (13572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 13572 transitions. [2025-04-13 18:05:01,086 INFO L79 Accepts]: Start accepts. Automaton has 3770 states and 13572 transitions. Word has length 19 [2025-04-13 18:05:01,086 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:01,086 INFO L485 AbstractCegarLoop]: Abstraction has 3770 states and 13572 transitions. [2025-04-13 18:05:01,086 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:01,086 INFO L278 IsEmpty]: Start isEmpty. Operand 3770 states and 13572 transitions. [2025-04-13 18:05:01,091 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:05:01,091 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:01,091 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:01,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Ended with exit code 0 [2025-04-13 18:05:01,291 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:01,292 INFO L403 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:05:01,292 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash -64348826, now seen corresponding path program 175 times [2025-04-13 18:05:01,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:01,292 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655347411] [2025-04-13 18:05:01,292 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:05:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:01,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:05:01,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:01,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:05:01,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:01,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:01,358 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655347411] [2025-04-13 18:05:01,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655347411] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:01,358 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626966909] [2025-04-13 18:05:01,358 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:05:01,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:01,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:01,360 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:05:01,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2025-04-13 18:05:01,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:05:01,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:01,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:05:01,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:01,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:05:01,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:01,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:01,503 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:05:01,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626966909] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:01,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:01,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 21 [2025-04-13 18:05:01,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046025792] [2025-04-13 18:05:01,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:01,504 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:05:01,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:01,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:05:01,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:05:01,504 INFO L87 Difference]: Start difference. First operand 3770 states and 13572 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:05,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:05,757 INFO L93 Difference]: Finished difference Result 3974 states and 14251 transitions. [2025-04-13 18:05:05,757 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 18:05:05,757 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:05:05,757 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:05,768 INFO L225 Difference]: With dead ends: 3974 [2025-04-13 18:05:05,768 INFO L226 Difference]: Without dead ends: 3955 [2025-04-13 18:05:05,769 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:05:05,769 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:05,769 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:05:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2025-04-13 18:05:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3812. [2025-04-13 18:05:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3812 states, 3811 states have (on average 3.6061401207032273) internal successors, (13743), 3811 states have internal predecessors, (13743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3812 states to 3812 states and 13743 transitions. [2025-04-13 18:05:08,348 INFO L79 Accepts]: Start accepts. Automaton has 3812 states and 13743 transitions. Word has length 19 [2025-04-13 18:05:08,348 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:08,348 INFO L485 AbstractCegarLoop]: Abstraction has 3812 states and 13743 transitions. [2025-04-13 18:05:08,348 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:08,348 INFO L278 IsEmpty]: Start isEmpty. Operand 3812 states and 13743 transitions. [2025-04-13 18:05:08,353 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:05:08,353 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:08,353 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:08,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Forceful destruction successful, exit code 0 [2025-04-13 18:05:08,553 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2025-04-13 18:05:08,553 INFO L403 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:05:08,553 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:08,553 INFO L85 PathProgramCache]: Analyzing trace with hash -841498425, now seen corresponding path program 176 times [2025-04-13 18:05:08,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:08,554 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203683276] [2025-04-13 18:05:08,554 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:05:08,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:08,556 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:05:08,560 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:08,560 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:05:08,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:08,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:08,618 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203683276] [2025-04-13 18:05:08,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203683276] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:08,618 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040609039] [2025-04-13 18:05:08,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:05:08,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:08,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:08,620 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:05:08,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2025-04-13 18:05:08,650 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:05:08,665 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:08,665 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:05:08,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:08,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:05:08,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:08,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:05:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040609039] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:08,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:08,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 21 [2025-04-13 18:05:08,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263558217] [2025-04-13 18:05:08,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:08,781 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:05:08,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:08,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:05:08,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:05:08,781 INFO L87 Difference]: Start difference. First operand 3812 states and 13743 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:13,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:13,206 INFO L93 Difference]: Finished difference Result 4021 states and 14350 transitions. [2025-04-13 18:05:13,206 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 18:05:13,206 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:05:13,206 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:13,216 INFO L225 Difference]: With dead ends: 4021 [2025-04-13 18:05:13,216 INFO L226 Difference]: Without dead ends: 4013 [2025-04-13 18:05:13,217 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=484, Invalid=1238, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:05:13,217 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:13,217 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:05:13,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4013 states. [2025-04-13 18:05:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4013 to 3684. [2025-04-13 18:05:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 3.5891935921802878) internal successors, (13219), 3683 states have internal predecessors, (13219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 13219 transitions. [2025-04-13 18:05:15,811 INFO L79 Accepts]: Start accepts. Automaton has 3684 states and 13219 transitions. Word has length 19 [2025-04-13 18:05:15,811 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:15,811 INFO L485 AbstractCegarLoop]: Abstraction has 3684 states and 13219 transitions. [2025-04-13 18:05:15,812 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:15,812 INFO L278 IsEmpty]: Start isEmpty. Operand 3684 states and 13219 transitions. [2025-04-13 18:05:15,816 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:05:15,816 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:15,817 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:15,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Ended with exit code 0 [2025-04-13 18:05:16,017 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:16,017 INFO L403 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:05:16,017 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1355266876, now seen corresponding path program 177 times [2025-04-13 18:05:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:16,017 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392895944] [2025-04-13 18:05:16,017 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:05:16,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:16,020 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:05:16,025 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:16,025 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:05:16,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:16,086 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392895944] [2025-04-13 18:05:16,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392895944] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:16,086 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829167883] [2025-04-13 18:05:16,086 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:05:16,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:16,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:16,088 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:05:16,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2025-04-13 18:05:16,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:05:16,134 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:16,134 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:05:16,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:16,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:05:16,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:16,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:05:16,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829167883] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:16,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:16,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2025-04-13 18:05:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786908093] [2025-04-13 18:05:16,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:16,228 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:05:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:16,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:05:16,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:05:16,229 INFO L87 Difference]: Start difference. First operand 3684 states and 13219 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:20,558 INFO L93 Difference]: Finished difference Result 3968 states and 14132 transitions. [2025-04-13 18:05:20,558 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:05:20,558 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:05:20,558 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:20,568 INFO L225 Difference]: With dead ends: 3968 [2025-04-13 18:05:20,568 INFO L226 Difference]: Without dead ends: 3945 [2025-04-13 18:05:20,569 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:05:20,569 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:20,569 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:05:20,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2025-04-13 18:05:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 3656. [2025-04-13 18:05:23,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 3655 states have (on average 3.584404924760602) internal successors, (13101), 3655 states have internal predecessors, (13101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 13101 transitions. [2025-04-13 18:05:23,125 INFO L79 Accepts]: Start accepts. Automaton has 3656 states and 13101 transitions. Word has length 19 [2025-04-13 18:05:23,125 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:23,125 INFO L485 AbstractCegarLoop]: Abstraction has 3656 states and 13101 transitions. [2025-04-13 18:05:23,125 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:23,125 INFO L278 IsEmpty]: Start isEmpty. Operand 3656 states and 13101 transitions. [2025-04-13 18:05:23,130 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:05:23,130 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:23,130 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:23,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2025-04-13 18:05:23,330 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:23,330 INFO L403 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:05:23,330 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:23,331 INFO L85 PathProgramCache]: Analyzing trace with hash 322899331, now seen corresponding path program 178 times [2025-04-13 18:05:23,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:23,331 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765047588] [2025-04-13 18:05:23,331 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:05:23,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:23,333 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:05:23,336 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:23,336 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:05:23,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:05:23,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:23,386 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765047588] [2025-04-13 18:05:23,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765047588] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:23,387 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744284821] [2025-04-13 18:05:23,387 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:05:23,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:23,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:23,388 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:05:23,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2025-04-13 18:05:23,418 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:05:23,433 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:23,433 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:05:23,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:23,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:05:23,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:23,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:05:23,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744284821] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:23,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:23,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2025-04-13 18:05:23,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827657354] [2025-04-13 18:05:23,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:23,522 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:05:23,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:23,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:05:23,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:05:23,523 INFO L87 Difference]: Start difference. First operand 3656 states and 13101 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:27,976 INFO L93 Difference]: Finished difference Result 4039 states and 14379 transitions. [2025-04-13 18:05:27,977 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:05:27,977 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:05:27,977 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:27,986 INFO L225 Difference]: With dead ends: 4039 [2025-04-13 18:05:27,986 INFO L226 Difference]: Without dead ends: 4022 [2025-04-13 18:05:27,987 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=508, Invalid=1298, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:05:27,987 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:27,987 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:05:27,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4022 states. [2025-04-13 18:05:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4022 to 3736. [2025-04-13 18:05:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3735 states have (on average 3.5917001338688084) internal successors, (13415), 3735 states have internal predecessors, (13415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 13415 transitions. [2025-04-13 18:05:30,571 INFO L79 Accepts]: Start accepts. Automaton has 3736 states and 13415 transitions. Word has length 19 [2025-04-13 18:05:30,571 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:30,571 INFO L485 AbstractCegarLoop]: Abstraction has 3736 states and 13415 transitions. [2025-04-13 18:05:30,571 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:30,571 INFO L278 IsEmpty]: Start isEmpty. Operand 3736 states and 13415 transitions. [2025-04-13 18:05:30,576 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:05:30,576 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:30,577 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:30,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Ended with exit code 0 [2025-04-13 18:05:30,777 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:30,777 INFO L403 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:05:30,777 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:30,777 INFO L85 PathProgramCache]: Analyzing trace with hash -420235193, now seen corresponding path program 179 times [2025-04-13 18:05:30,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:30,777 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86732031] [2025-04-13 18:05:30,777 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:05:30,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:30,780 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:05:30,784 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:30,784 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:05:30,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:05:30,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:30,835 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86732031] [2025-04-13 18:05:30,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86732031] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:30,835 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217048537] [2025-04-13 18:05:30,835 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:05:30,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:30,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:30,837 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:05:30,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2025-04-13 18:05:30,866 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:05:30,881 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:30,882 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:05:30,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:30,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:05:30,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:30,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:05:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217048537] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:30,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:30,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2025-04-13 18:05:30,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041788988] [2025-04-13 18:05:30,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:30,965 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:05:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:30,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:05:30,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:05:30,965 INFO L87 Difference]: Start difference. First operand 3736 states and 13415 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18:05:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:35,499 INFO L93 Difference]: Finished difference Result 3990 states and 14127 transitions. [2025-04-13 18:05:35,500 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:05:35,500 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 19 [2025-04-13 18:05:35,500 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:35,510 INFO L225 Difference]: With dead ends: 3990 [2025-04-13 18:05:35,510 INFO L226 Difference]: Without dead ends: 3958 [2025-04-13 18:05:35,511 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:05:35,511 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:35,511 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:05:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2025-04-13 18:05:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3682. [2025-04-13 18:05:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3681 states have (on average 3.583265417006248) internal successors, (13190), 3681 states have internal predecessors, (13190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 13190 transitions. [2025-04-13 18:05:38,117 INFO L79 Accepts]: Start accepts. Automaton has 3682 states and 13190 transitions. Word has length 19 [2025-04-13 18:05:38,117 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:38,117 INFO L485 AbstractCegarLoop]: Abstraction has 3682 states and 13190 transitions. [2025-04-13 18:05:38,117 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18:05:38,117 INFO L278 IsEmpty]: Start isEmpty. Operand 3682 states and 13190 transitions. [2025-04-13 18:05:38,122 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:05:38,122 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:38,122 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:38,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Ended with exit code 0 [2025-04-13 18:05:38,322 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:38,323 INFO L403 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:05:38,323 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:38,323 INFO L85 PathProgramCache]: Analyzing trace with hash -608996404, now seen corresponding path program 180 times [2025-04-13 18:05:38,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:38,323 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031275315] [2025-04-13 18:05:38,323 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:05:38,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:38,326 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:05:38,331 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:38,331 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:05:38,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:38,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:38,392 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031275315] [2025-04-13 18:05:38,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031275315] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:38,392 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308803396] [2025-04-13 18:05:38,392 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:05:38,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:38,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:38,394 INFO L229 MonitoredProcess]: Starting monitored process 187 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:05:38,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2025-04-13 18:05:38,425 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:05:38,441 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:38,441 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:05:38,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:38,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:05:38,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:38,509 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:05:38,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308803396] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:38,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:38,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2025-04-13 18:05:38,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106769944] [2025-04-13 18:05:38,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:38,546 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:05:38,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:38,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:05:38,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:05:38,547 INFO L87 Difference]: Start difference. First operand 3682 states and 13190 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:44,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:44,315 INFO L93 Difference]: Finished difference Result 4034 states and 14233 transitions. [2025-04-13 18:05:44,316 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 18:05:44,316 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:05:44,316 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:44,325 INFO L225 Difference]: With dead ends: 4034 [2025-04-13 18:05:44,325 INFO L226 Difference]: Without dead ends: 4025 [2025-04-13 18:05:44,326 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=463, Invalid=1517, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 18:05:44,326 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 77 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:44,326 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 0 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:05:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2025-04-13 18:05:47,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3574. [2025-04-13 18:05:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.5729079205149734) internal successors, (12766), 3573 states have internal predecessors, (12766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 12766 transitions. [2025-04-13 18:05:47,018 INFO L79 Accepts]: Start accepts. Automaton has 3574 states and 12766 transitions. Word has length 19 [2025-04-13 18:05:47,018 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:47,018 INFO L485 AbstractCegarLoop]: Abstraction has 3574 states and 12766 transitions. [2025-04-13 18:05:47,018 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:47,018 INFO L278 IsEmpty]: Start isEmpty. Operand 3574 states and 12766 transitions. [2025-04-13 18:05:47,023 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:05:47,023 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:47,023 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:47,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Ended with exit code 0 [2025-04-13 18:05:47,224 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,187 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:47,224 INFO L403 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:05:47,224 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:47,224 INFO L85 PathProgramCache]: Analyzing trace with hash -221748247, now seen corresponding path program 181 times [2025-04-13 18:05:47,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:47,224 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431203643] [2025-04-13 18:05:47,224 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:05:47,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:47,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:05:47,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:47,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:05:47,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:47,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:47,292 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431203643] [2025-04-13 18:05:47,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431203643] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:47,292 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566153083] [2025-04-13 18:05:47,292 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:05:47,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:47,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:47,294 INFO L229 MonitoredProcess]: Starting monitored process 188 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:05:47,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2025-04-13 18:05:47,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:05:47,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:47,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:05:47,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:47,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:05:47,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:47,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:05:47,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566153083] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:47,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:47,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 21 [2025-04-13 18:05:47,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346485726] [2025-04-13 18:05:47,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:47,439 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:05:47,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:47,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:05:47,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:05:47,440 INFO L87 Difference]: Start difference. First operand 3574 states and 12766 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:05:51,774 INFO L93 Difference]: Finished difference Result 3707 states and 13134 transitions. [2025-04-13 18:05:51,774 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:05:51,774 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:05:51,774 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:05:51,784 INFO L225 Difference]: With dead ends: 3707 [2025-04-13 18:05:51,784 INFO L226 Difference]: Without dead ends: 3687 [2025-04-13 18:05:51,784 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:05:51,784 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:05:51,784 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:05:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2025-04-13 18:05:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3532. [2025-04-13 18:05:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 3531 states have (on average 3.566411781365052) internal successors, (12593), 3531 states have internal predecessors, (12593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 12593 transitions. [2025-04-13 18:05:54,456 INFO L79 Accepts]: Start accepts. Automaton has 3532 states and 12593 transitions. Word has length 19 [2025-04-13 18:05:54,456 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:05:54,456 INFO L485 AbstractCegarLoop]: Abstraction has 3532 states and 12593 transitions. [2025-04-13 18:05:54,456 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:05:54,456 INFO L278 IsEmpty]: Start isEmpty. Operand 3532 states and 12593 transitions. [2025-04-13 18:05:54,461 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:05:54,462 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:05:54,462 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:05:54,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Ended with exit code 0 [2025-04-13 18:05:54,662 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2025-04-13 18:05:54,662 INFO L403 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:05:54,662 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:05:54,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2028952636, now seen corresponding path program 182 times [2025-04-13 18:05:54,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:05:54,663 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098762864] [2025-04-13 18:05:54,663 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:05:54,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:05:54,667 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:05:54,670 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:54,670 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:05:54,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:54,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:05:54,732 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098762864] [2025-04-13 18:05:54,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098762864] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:05:54,732 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233836444] [2025-04-13 18:05:54,732 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:05:54,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:05:54,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:05:54,735 INFO L229 MonitoredProcess]: Starting monitored process 189 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:05:54,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2025-04-13 18:05:54,766 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:05:54,782 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:05:54,783 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:05:54,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:05:54,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:05:54,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:05:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:05:54,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:05:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:05:54,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233836444] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:05:54,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:05:54,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 21 [2025-04-13 18:05:54,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892172926] [2025-04-13 18:05:54,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:05:54,891 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:05:54,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:05:54,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:05:54,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:05:54,892 INFO L87 Difference]: Start difference. First operand 3532 states and 12593 transitions. Second operand has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:00,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:00,896 INFO L93 Difference]: Finished difference Result 4075 states and 14348 transitions. [2025-04-13 18:06:00,897 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 18:06:00,897 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:06:00,897 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:00,907 INFO L225 Difference]: With dead ends: 4075 [2025-04-13 18:06:00,907 INFO L226 Difference]: Without dead ends: 4066 [2025-04-13 18:06:00,908 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=387, Invalid=1173, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:06:00,908 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:00,908 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:06:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2025-04-13 18:06:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3632. [2025-04-13 18:06:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3632 states, 3631 states have (on average 3.5662351969154504) internal successors, (12949), 3631 states have internal predecessors, (12949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:03,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 12949 transitions. [2025-04-13 18:06:03,696 INFO L79 Accepts]: Start accepts. Automaton has 3632 states and 12949 transitions. Word has length 19 [2025-04-13 18:06:03,696 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:03,697 INFO L485 AbstractCegarLoop]: Abstraction has 3632 states and 12949 transitions. [2025-04-13 18:06:03,697 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.619047619047619) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:03,697 INFO L278 IsEmpty]: Start isEmpty. Operand 3632 states and 12949 transitions. [2025-04-13 18:06:03,702 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:06:03,702 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:03,702 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:03,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Ended with exit code 0 [2025-04-13 18:06:03,902 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,189 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:03,903 INFO L403 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:06:03,903 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:03,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1943114956, now seen corresponding path program 183 times [2025-04-13 18:06:03,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:03,903 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517284198] [2025-04-13 18:06:03,903 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:06:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:03,906 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 5 equivalence classes. [2025-04-13 18:06:03,913 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:03,913 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-04-13 18:06:03,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:03,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:03,977 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517284198] [2025-04-13 18:06:03,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517284198] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:03,977 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37567656] [2025-04-13 18:06:03,977 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:06:03,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:03,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:03,979 INFO L229 MonitoredProcess]: Starting monitored process 190 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:06:03,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2025-04-13 18:06:04,012 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 5 equivalence classes. [2025-04-13 18:06:04,028 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:04,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-04-13 18:06:04,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:04,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:06:04,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:04,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:06:04,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37567656] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:04,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:04,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 21 [2025-04-13 18:06:04,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743444451] [2025-04-13 18:06:04,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:04,140 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:06:04,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:04,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:06:04,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:06:04,140 INFO L87 Difference]: Start difference. First operand 3632 states and 12949 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:09,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:09,937 INFO L93 Difference]: Finished difference Result 4352 states and 15492 transitions. [2025-04-13 18:06:09,939 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 18:06:09,939 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:06:09,939 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:09,950 INFO L225 Difference]: With dead ends: 4352 [2025-04-13 18:06:09,950 INFO L226 Difference]: Without dead ends: 4345 [2025-04-13 18:06:09,951 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=408, Invalid=1074, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:06:09,951 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:09,951 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:06:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2025-04-13 18:06:13,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 4090. [2025-04-13 18:06:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4089 states have (on average 3.5915871851308387) internal successors, (14686), 4089 states have internal predecessors, (14686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 14686 transitions. [2025-04-13 18:06:13,103 INFO L79 Accepts]: Start accepts. Automaton has 4090 states and 14686 transitions. Word has length 19 [2025-04-13 18:06:13,103 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:13,103 INFO L485 AbstractCegarLoop]: Abstraction has 4090 states and 14686 transitions. [2025-04-13 18:06:13,103 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:13,103 INFO L278 IsEmpty]: Start isEmpty. Operand 4090 states and 14686 transitions. [2025-04-13 18:06:13,110 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:06:13,110 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:13,110 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:13,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Ended with exit code 0 [2025-04-13 18:06:13,311 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,190 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:13,311 INFO L403 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:06:13,311 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash -550986390, now seen corresponding path program 184 times [2025-04-13 18:06:13,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:13,311 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110340758] [2025-04-13 18:06:13,311 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:06:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:13,314 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:06:13,317 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:13,317 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:06:13,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:06:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:13,362 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110340758] [2025-04-13 18:06:13,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110340758] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:13,362 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762627283] [2025-04-13 18:06:13,362 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:06:13,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:13,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:13,364 INFO L229 MonitoredProcess]: Starting monitored process 191 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:06:13,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2025-04-13 18:06:13,395 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:06:13,411 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:13,411 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:06:13,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:13,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:06:13,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:13,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:06:13,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762627283] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:13,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:13,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 16 [2025-04-13 18:06:13,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015269028] [2025-04-13 18:06:13,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:13,488 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:06:13,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:13,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:06:13,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:06:13,489 INFO L87 Difference]: Start difference. First operand 4090 states and 14686 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:06:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:18,472 INFO L93 Difference]: Finished difference Result 4236 states and 15160 transitions. [2025-04-13 18:06:18,472 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:06:18,472 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 19 [2025-04-13 18:06:18,472 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:18,483 INFO L225 Difference]: With dead ends: 4236 [2025-04-13 18:06:18,483 INFO L226 Difference]: Without dead ends: 4225 [2025-04-13 18:06:18,484 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:06:18,484 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:18,484 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:06:18,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2025-04-13 18:06:21,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 4024. [2025-04-13 18:06:21,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 4023 states have (on average 3.5851354710415113) internal successors, (14423), 4023 states have internal predecessors, (14423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 14423 transitions. [2025-04-13 18:06:21,540 INFO L79 Accepts]: Start accepts. Automaton has 4024 states and 14423 transitions. Word has length 19 [2025-04-13 18:06:21,540 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:21,540 INFO L485 AbstractCegarLoop]: Abstraction has 4024 states and 14423 transitions. [2025-04-13 18:06:21,540 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 18:06:21,540 INFO L278 IsEmpty]: Start isEmpty. Operand 4024 states and 14423 transitions. [2025-04-13 18:06:21,546 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:06:21,546 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:21,546 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:21,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Ended with exit code 0 [2025-04-13 18:06:21,746 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,191 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:21,747 INFO L403 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:06:21,747 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:21,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1159626918, now seen corresponding path program 185 times [2025-04-13 18:06:21,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:21,747 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721850502] [2025-04-13 18:06:21,747 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:06:21,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:21,750 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:06:21,754 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:21,754 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:06:21,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:06:21,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:21,803 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721850502] [2025-04-13 18:06:21,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721850502] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:21,804 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536342811] [2025-04-13 18:06:21,804 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:06:21,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:21,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:21,806 INFO L229 MonitoredProcess]: Starting monitored process 192 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:06:21,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2025-04-13 18:06:21,836 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:06:21,852 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:21,852 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:06:21,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:21,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:06:21,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:21,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:06:21,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536342811] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:21,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:21,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 17 [2025-04-13 18:06:21,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138877861] [2025-04-13 18:06:21,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:21,932 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:06:21,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:21,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:06:21,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:06:21,932 INFO L87 Difference]: Start difference. First operand 4024 states and 14423 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18:06:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:26,999 INFO L93 Difference]: Finished difference Result 4314 states and 15417 transitions. [2025-04-13 18:06:26,999 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:06:27,000 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 19 [2025-04-13 18:06:27,000 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:27,011 INFO L225 Difference]: With dead ends: 4314 [2025-04-13 18:06:27,011 INFO L226 Difference]: Without dead ends: 4299 [2025-04-13 18:06:27,011 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:06:27,012 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:27,012 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:06:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2025-04-13 18:06:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 4106. [2025-04-13 18:06:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4106 states, 4105 states have (on average 3.5858708891595614) internal successors, (14720), 4105 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:30,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4106 states to 4106 states and 14720 transitions. [2025-04-13 18:06:30,140 INFO L79 Accepts]: Start accepts. Automaton has 4106 states and 14720 transitions. Word has length 19 [2025-04-13 18:06:30,140 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:30,140 INFO L485 AbstractCegarLoop]: Abstraction has 4106 states and 14720 transitions. [2025-04-13 18:06:30,140 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18:06:30,140 INFO L278 IsEmpty]: Start isEmpty. Operand 4106 states and 14720 transitions. [2025-04-13 18:06:30,146 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:06:30,146 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:30,146 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:30,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Ended with exit code 0 [2025-04-13 18:06:30,347 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,192 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:30,347 INFO L403 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:06:30,347 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:30,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1645935382, now seen corresponding path program 186 times [2025-04-13 18:06:30,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:30,347 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195581059] [2025-04-13 18:06:30,347 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:06:30,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:30,350 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:06:30,355 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:30,355 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:06:30,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:30,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:30,419 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195581059] [2025-04-13 18:06:30,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195581059] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:30,419 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029634055] [2025-04-13 18:06:30,419 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:06:30,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:30,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:30,421 INFO L229 MonitoredProcess]: Starting monitored process 193 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:06:30,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2025-04-13 18:06:30,452 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:06:30,468 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:30,469 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:06:30,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:30,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:06:30,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:30,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:06:30,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029634055] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:30,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:30,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2025-04-13 18:06:30,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067744411] [2025-04-13 18:06:30,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:30,586 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:06:30,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:30,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:06:30,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:06:30,586 INFO L87 Difference]: Start difference. First operand 4106 states and 14720 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:35,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:35,940 INFO L93 Difference]: Finished difference Result 4478 states and 15955 transitions. [2025-04-13 18:06:35,941 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:06:35,941 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:06:35,941 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:35,951 INFO L225 Difference]: With dead ends: 4478 [2025-04-13 18:06:35,952 INFO L226 Difference]: Without dead ends: 4459 [2025-04-13 18:06:35,952 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2025-04-13 18:06:35,952 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:35,952 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:06:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2025-04-13 18:06:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 4214. [2025-04-13 18:06:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4214 states, 4213 states have (on average 3.580821267505341) internal successors, (15086), 4213 states have internal predecessors, (15086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4214 states to 4214 states and 15086 transitions. [2025-04-13 18:06:39,120 INFO L79 Accepts]: Start accepts. Automaton has 4214 states and 15086 transitions. Word has length 19 [2025-04-13 18:06:39,121 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:39,121 INFO L485 AbstractCegarLoop]: Abstraction has 4214 states and 15086 transitions. [2025-04-13 18:06:39,121 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:39,121 INFO L278 IsEmpty]: Start isEmpty. Operand 4214 states and 15086 transitions. [2025-04-13 18:06:39,127 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:06:39,127 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:39,127 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:39,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Forceful destruction successful, exit code 0 [2025-04-13 18:06:39,328 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2025-04-13 18:06:39,328 INFO L403 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:06:39,328 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:39,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1575946534, now seen corresponding path program 187 times [2025-04-13 18:06:39,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:39,328 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394142040] [2025-04-13 18:06:39,328 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:06:39,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:39,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:06:39,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:39,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:06:39,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:39,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:39,397 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394142040] [2025-04-13 18:06:39,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394142040] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:39,397 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094397909] [2025-04-13 18:06:39,397 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:06:39,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:39,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:39,399 INFO L229 MonitoredProcess]: Starting monitored process 194 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:06:39,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2025-04-13 18:06:39,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:06:39,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:39,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:06:39,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:39,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:06:39,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:39,515 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:39,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094397909] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:39,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:39,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2025-04-13 18:06:39,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10181524] [2025-04-13 18:06:39,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:39,574 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:06:39,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:39,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:06:39,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:06:39,574 INFO L87 Difference]: Start difference. First operand 4214 states and 15086 transitions. Second operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:45,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:45,112 INFO L93 Difference]: Finished difference Result 4558 states and 16207 transitions. [2025-04-13 18:06:45,113 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:06:45,113 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:06:45,113 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:45,123 INFO L225 Difference]: With dead ends: 4558 [2025-04-13 18:06:45,123 INFO L226 Difference]: Without dead ends: 4535 [2025-04-13 18:06:45,124 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:06:45,124 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:45,124 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:06:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2025-04-13 18:06:48,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 4286. [2025-04-13 18:06:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 3.585997666277713) internal successors, (15366), 4285 states have internal predecessors, (15366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 15366 transitions. [2025-04-13 18:06:48,348 INFO L79 Accepts]: Start accepts. Automaton has 4286 states and 15366 transitions. Word has length 19 [2025-04-13 18:06:48,349 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:48,349 INFO L485 AbstractCegarLoop]: Abstraction has 4286 states and 15366 transitions. [2025-04-13 18:06:48,349 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:48,349 INFO L278 IsEmpty]: Start isEmpty. Operand 4286 states and 15366 transitions. [2025-04-13 18:06:48,355 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:06:48,355 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:48,355 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:48,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Ended with exit code 0 [2025-04-13 18:06:48,555 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2025-04-13 18:06:48,555 INFO L403 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:06:48,555 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2059491399, now seen corresponding path program 188 times [2025-04-13 18:06:48,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:48,556 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482862341] [2025-04-13 18:06:48,556 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:06:48,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:48,558 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:06:48,561 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:48,561 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:06:48,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:48,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:48,629 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482862341] [2025-04-13 18:06:48,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482862341] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:48,629 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087928484] [2025-04-13 18:06:48,629 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:06:48,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:48,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:48,631 INFO L229 MonitoredProcess]: Starting monitored process 195 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:06:48,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2025-04-13 18:06:48,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:06:48,677 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:48,677 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:06:48,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:48,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:06:48,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:48,741 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:48,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087928484] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:48,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:48,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2025-04-13 18:06:48,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246295168] [2025-04-13 18:06:48,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:48,793 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:06:48,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:48,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:06:48,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:06:48,793 INFO L87 Difference]: Start difference. First operand 4286 states and 15366 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:06:54,587 INFO L93 Difference]: Finished difference Result 4520 states and 16054 transitions. [2025-04-13 18:06:54,587 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-04-13 18:06:54,587 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:06:54,587 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:06:54,599 INFO L225 Difference]: With dead ends: 4520 [2025-04-13 18:06:54,599 INFO L226 Difference]: Without dead ends: 4509 [2025-04-13 18:06:54,600 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=890, Invalid=2892, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 18:06:54,600 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 85 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:06:54,600 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 0 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:06:54,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2025-04-13 18:06:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4366. [2025-04-13 18:06:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4366 states, 4365 states have (on average 3.586254295532646) internal successors, (15654), 4365 states have internal predecessors, (15654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4366 states to 4366 states and 15654 transitions. [2025-04-13 18:06:57,951 INFO L79 Accepts]: Start accepts. Automaton has 4366 states and 15654 transitions. Word has length 19 [2025-04-13 18:06:57,951 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:06:57,951 INFO L485 AbstractCegarLoop]: Abstraction has 4366 states and 15654 transitions. [2025-04-13 18:06:57,951 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:06:57,951 INFO L278 IsEmpty]: Start isEmpty. Operand 4366 states and 15654 transitions. [2025-04-13 18:06:57,957 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:06:57,957 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:06:57,957 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:06:57,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Ended with exit code 0 [2025-04-13 18:06:58,158 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2025-04-13 18:06:58,158 INFO L403 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:06:58,158 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:06:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1481013283, now seen corresponding path program 189 times [2025-04-13 18:06:58,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:06:58,158 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286747621] [2025-04-13 18:06:58,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:06:58,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:06:58,161 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:06:58,166 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:58,166 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:06:58,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:58,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:06:58,258 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286747621] [2025-04-13 18:06:58,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286747621] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:06:58,258 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763923951] [2025-04-13 18:06:58,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:06:58,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:06:58,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:06:58,260 INFO L229 MonitoredProcess]: Starting monitored process 196 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:06:58,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2025-04-13 18:06:58,291 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:06:58,307 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:06:58,307 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:06:58,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:06:58,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:06:58,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:06:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:58,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:06:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:06:58,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763923951] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:06:58,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:06:58,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2025-04-13 18:06:58,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5870671] [2025-04-13 18:06:58,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:06:58,399 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:06:58,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:06:58,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:06:58,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:06:58,400 INFO L87 Difference]: Start difference. First operand 4366 states and 15654 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:04,634 INFO L93 Difference]: Finished difference Result 4787 states and 16878 transitions. [2025-04-13 18:07:04,634 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 18:07:04,635 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:07:04,635 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:04,648 INFO L225 Difference]: With dead ends: 4787 [2025-04-13 18:07:04,648 INFO L226 Difference]: Without dead ends: 4752 [2025-04-13 18:07:04,650 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=334, Invalid=1148, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:07:04,650 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:04,650 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:07:04,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2025-04-13 18:07:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4376. [2025-04-13 18:07:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.585142857142857) internal successors, (15685), 4375 states have internal predecessors, (15685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 15685 transitions. [2025-04-13 18:07:08,173 INFO L79 Accepts]: Start accepts. Automaton has 4376 states and 15685 transitions. Word has length 19 [2025-04-13 18:07:08,173 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:08,173 INFO L485 AbstractCegarLoop]: Abstraction has 4376 states and 15685 transitions. [2025-04-13 18:07:08,173 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:08,173 INFO L278 IsEmpty]: Start isEmpty. Operand 4376 states and 15685 transitions. [2025-04-13 18:07:08,179 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:07:08,180 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:08,180 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:08,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Ended with exit code 0 [2025-04-13 18:07:08,380 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2025-04-13 18:07:08,380 INFO L403 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:07:08,380 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:08,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1669774494, now seen corresponding path program 190 times [2025-04-13 18:07:08,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:08,381 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323306796] [2025-04-13 18:07:08,381 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:07:08,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:08,384 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:07:08,387 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:08,387 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:07:08,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:08,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:08,444 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323306796] [2025-04-13 18:07:08,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323306796] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:08,444 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581705422] [2025-04-13 18:07:08,444 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:07:08,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:08,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:08,446 INFO L229 MonitoredProcess]: Starting monitored process 197 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:07:08,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Waiting until timeout for monitored process [2025-04-13 18:07:08,476 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:07:08,492 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:08,492 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:07:08,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:08,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:07:08,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:08,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:08,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581705422] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:08,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:08,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:07:08,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411356659] [2025-04-13 18:07:08,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:08,586 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:07:08,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:08,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:07:08,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:07:08,587 INFO L87 Difference]: Start difference. First operand 4376 states and 15685 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18:07:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:15,656 INFO L93 Difference]: Finished difference Result 4759 states and 16836 transitions. [2025-04-13 18:07:15,656 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 18:07:15,656 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 19 [2025-04-13 18:07:15,656 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:15,670 INFO L225 Difference]: With dead ends: 4759 [2025-04-13 18:07:15,670 INFO L226 Difference]: Without dead ends: 4750 [2025-04-13 18:07:15,672 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=459, Invalid=1347, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:07:15,672 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:15,672 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:07:15,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4750 states. [2025-04-13 18:07:19,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4750 to 4356. [2025-04-13 18:07:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 4355 states have (on average 3.5832376578645238) internal successors, (15605), 4355 states have internal predecessors, (15605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 15605 transitions. [2025-04-13 18:07:19,046 INFO L79 Accepts]: Start accepts. Automaton has 4356 states and 15605 transitions. Word has length 19 [2025-04-13 18:07:19,046 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:19,046 INFO L485 AbstractCegarLoop]: Abstraction has 4356 states and 15605 transitions. [2025-04-13 18:07:19,046 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 18:07:19,046 INFO L278 IsEmpty]: Start isEmpty. Operand 4356 states and 15605 transitions. [2025-04-13 18:07:19,053 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:07:19,053 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:19,053 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:19,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Ended with exit code 0 [2025-04-13 18:07:19,253 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,197 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:19,254 INFO L403 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:07:19,254 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1097058240, now seen corresponding path program 191 times [2025-04-13 18:07:19,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:19,254 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648389758] [2025-04-13 18:07:19,254 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:07:19,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:19,257 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:07:19,261 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:19,261 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:07:19,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:07:19,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:19,323 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648389758] [2025-04-13 18:07:19,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648389758] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:19,323 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443893944] [2025-04-13 18:07:19,323 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:07:19,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:19,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:19,325 INFO L229 MonitoredProcess]: Starting monitored process 198 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:07:19,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Waiting until timeout for monitored process [2025-04-13 18:07:19,358 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:07:19,377 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:19,378 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:07:19,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:19,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:07:19,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:19,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:07:19,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443893944] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:19,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:19,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2025-04-13 18:07:19,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396412752] [2025-04-13 18:07:19,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:19,478 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:07:19,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:19,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:07:19,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:07:19,479 INFO L87 Difference]: Start difference. First operand 4356 states and 15605 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:25,172 INFO L93 Difference]: Finished difference Result 4591 states and 16372 transitions. [2025-04-13 18:07:25,173 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 18:07:25,173 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:07:25,173 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:25,186 INFO L225 Difference]: With dead ends: 4591 [2025-04-13 18:07:25,186 INFO L226 Difference]: Without dead ends: 4576 [2025-04-13 18:07:25,186 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:07:25,187 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:25,187 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:07:25,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2025-04-13 18:07:28,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4342. [2025-04-13 18:07:28,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4342 states, 4341 states have (on average 3.5821239345772864) internal successors, (15550), 4341 states have internal predecessors, (15550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4342 states to 4342 states and 15550 transitions. [2025-04-13 18:07:28,626 INFO L79 Accepts]: Start accepts. Automaton has 4342 states and 15550 transitions. Word has length 19 [2025-04-13 18:07:28,626 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:28,626 INFO L485 AbstractCegarLoop]: Abstraction has 4342 states and 15550 transitions. [2025-04-13 18:07:28,626 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:28,626 INFO L278 IsEmpty]: Start isEmpty. Operand 4342 states and 15550 transitions. [2025-04-13 18:07:28,634 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:07:28,634 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:28,634 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:28,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Ended with exit code 0 [2025-04-13 18:07:28,834 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2025-04-13 18:07:28,835 INFO L403 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:07:28,835 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:28,835 INFO L85 PathProgramCache]: Analyzing trace with hash -235413147, now seen corresponding path program 192 times [2025-04-13 18:07:28,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:28,835 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854796523] [2025-04-13 18:07:28,835 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:07:28,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:28,838 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:07:28,843 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:28,843 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:07:28,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:07:28,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:28,904 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854796523] [2025-04-13 18:07:28,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854796523] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:28,904 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583529374] [2025-04-13 18:07:28,904 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:07:28,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:28,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:28,906 INFO L229 MonitoredProcess]: Starting monitored process 199 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:07:28,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Waiting until timeout for monitored process [2025-04-13 18:07:28,942 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:07:28,962 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:28,962 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:07:28,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:28,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:07:28,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:29,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:07:29,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583529374] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:29,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:29,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 18 [2025-04-13 18:07:29,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660409560] [2025-04-13 18:07:29,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:29,067 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:07:29,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:29,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:07:29,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:07:29,067 INFO L87 Difference]: Start difference. First operand 4342 states and 15550 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:35,017 INFO L93 Difference]: Finished difference Result 4744 states and 16866 transitions. [2025-04-13 18:07:35,018 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:07:35,018 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:07:35,018 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:35,030 INFO L225 Difference]: With dead ends: 4744 [2025-04-13 18:07:35,031 INFO L226 Difference]: Without dead ends: 4731 [2025-04-13 18:07:35,031 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=564, Invalid=1242, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:07:35,032 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:35,032 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:07:35,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2025-04-13 18:07:38,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4386. [2025-04-13 18:07:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 3.5826681870011403) internal successors, (15710), 4385 states have internal predecessors, (15710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:38,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 15710 transitions. [2025-04-13 18:07:38,428 INFO L79 Accepts]: Start accepts. Automaton has 4386 states and 15710 transitions. Word has length 19 [2025-04-13 18:07:38,428 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:38,428 INFO L485 AbstractCegarLoop]: Abstraction has 4386 states and 15710 transitions. [2025-04-13 18:07:38,428 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:38,428 INFO L278 IsEmpty]: Start isEmpty. Operand 4386 states and 15710 transitions. [2025-04-13 18:07:38,435 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:07:38,435 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:38,435 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:38,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Ended with exit code 0 [2025-04-13 18:07:38,635 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 199 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2025-04-13 18:07:38,635 INFO L403 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:07:38,636 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:38,636 INFO L85 PathProgramCache]: Analyzing trace with hash -909449156, now seen corresponding path program 193 times [2025-04-13 18:07:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:38,636 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413074542] [2025-04-13 18:07:38,636 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:07:38,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:38,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:07:38,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:38,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:07:38,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:07:38,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:38,694 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413074542] [2025-04-13 18:07:38,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413074542] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:38,694 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062742382] [2025-04-13 18:07:38,694 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:07:38,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:38,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:38,696 INFO L229 MonitoredProcess]: Starting monitored process 200 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:07:38,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Waiting until timeout for monitored process [2025-04-13 18:07:38,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:07:38,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:38,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:07:38,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:38,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:07:38,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:38,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:07:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062742382] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:38,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:38,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 18 [2025-04-13 18:07:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169433965] [2025-04-13 18:07:38,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:38,826 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:07:38,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:38,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:07:38,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:07:38,826 INFO L87 Difference]: Start difference. First operand 4386 states and 15710 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:44,640 INFO L93 Difference]: Finished difference Result 4671 states and 16618 transitions. [2025-04-13 18:07:44,640 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:07:44,640 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:07:44,640 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:44,654 INFO L225 Difference]: With dead ends: 4671 [2025-04-13 18:07:44,654 INFO L226 Difference]: Without dead ends: 4656 [2025-04-13 18:07:44,656 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:07:44,656 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:44,656 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:07:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4656 states. [2025-04-13 18:07:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4656 to 4386. [2025-04-13 18:07:48,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 3.5812998859749143) internal successors, (15704), 4385 states have internal predecessors, (15704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:48,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 15704 transitions. [2025-04-13 18:07:48,070 INFO L79 Accepts]: Start accepts. Automaton has 4386 states and 15704 transitions. Word has length 19 [2025-04-13 18:07:48,070 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:48,070 INFO L485 AbstractCegarLoop]: Abstraction has 4386 states and 15704 transitions. [2025-04-13 18:07:48,071 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:48,071 INFO L278 IsEmpty]: Start isEmpty. Operand 4386 states and 15704 transitions. [2025-04-13 18:07:48,076 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:07:48,076 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:48,076 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:48,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Ended with exit code 0 [2025-04-13 18:07:48,277 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2025-04-13 18:07:48,277 INFO L403 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:07:48,277 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1686598755, now seen corresponding path program 194 times [2025-04-13 18:07:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:48,277 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881971929] [2025-04-13 18:07:48,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:07:48,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:48,280 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:07:48,283 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:48,283 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:07:48,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:07:48,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:48,337 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881971929] [2025-04-13 18:07:48,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881971929] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:48,337 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075786697] [2025-04-13 18:07:48,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:07:48,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:48,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:48,339 INFO L229 MonitoredProcess]: Starting monitored process 201 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:07:48,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Waiting until timeout for monitored process [2025-04-13 18:07:48,369 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:07:48,384 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:48,384 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:07:48,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:48,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:07:48,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:48,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:07:48,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075786697] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:48,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:48,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 18 [2025-04-13 18:07:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879222546] [2025-04-13 18:07:48,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:48,477 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:07:48,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:48,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:07:48,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:07:48,477 INFO L87 Difference]: Start difference. First operand 4386 states and 15704 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:07:54,712 INFO L93 Difference]: Finished difference Result 4801 states and 17000 transitions. [2025-04-13 18:07:54,712 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:07:54,712 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:07:54,712 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:07:54,724 INFO L225 Difference]: With dead ends: 4801 [2025-04-13 18:07:54,724 INFO L226 Difference]: Without dead ends: 4793 [2025-04-13 18:07:54,725 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 22 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=499, Invalid=1223, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:07:54,725 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:07:54,725 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:07:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4793 states. [2025-04-13 18:07:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4793 to 4368. [2025-04-13 18:07:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.581634989695443) internal successors, (15641), 4367 states have internal predecessors, (15641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 15641 transitions. [2025-04-13 18:07:58,191 INFO L79 Accepts]: Start accepts. Automaton has 4368 states and 15641 transitions. Word has length 19 [2025-04-13 18:07:58,191 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:07:58,191 INFO L485 AbstractCegarLoop]: Abstraction has 4368 states and 15641 transitions. [2025-04-13 18:07:58,191 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:07:58,191 INFO L278 IsEmpty]: Start isEmpty. Operand 4368 states and 15641 transitions. [2025-04-13 18:07:58,197 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:07:58,198 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:07:58,198 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:07:58,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Ended with exit code 0 [2025-04-13 18:07:58,398 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable207 [2025-04-13 18:07:58,398 INFO L403 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:07:58,398 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:07:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash 611465152, now seen corresponding path program 195 times [2025-04-13 18:07:58,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:07:58,399 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076764944] [2025-04-13 18:07:58,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:07:58,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:07:58,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:07:58,407 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:58,407 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:07:58,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:58,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:07:58,467 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076764944] [2025-04-13 18:07:58,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076764944] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:07:58,467 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025642832] [2025-04-13 18:07:58,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:07:58,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:07:58,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:07:58,470 INFO L229 MonitoredProcess]: Starting monitored process 202 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:07:58,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Waiting until timeout for monitored process [2025-04-13 18:07:58,501 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:07:58,517 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:07:58,517 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:07:58,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:07:58,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:07:58,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:07:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:07:58,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:07:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:07:58,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025642832] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:07:58,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:07:58,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2025-04-13 18:07:58,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522430072] [2025-04-13 18:07:58,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:07:58,614 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:07:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:07:58,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:07:58,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:07:58,615 INFO L87 Difference]: Start difference. First operand 4368 states and 15641 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:08:04,770 INFO L93 Difference]: Finished difference Result 4781 states and 16977 transitions. [2025-04-13 18:08:04,771 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:08:04,771 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:08:04,771 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:08:04,783 INFO L225 Difference]: With dead ends: 4781 [2025-04-13 18:08:04,783 INFO L226 Difference]: Without dead ends: 4756 [2025-04-13 18:08:04,784 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:08:04,784 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:08:04,784 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:08:04,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2025-04-13 18:08:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 4332. [2025-04-13 18:08:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4331 states have (on average 3.579542830755022) internal successors, (15503), 4331 states have internal predecessors, (15503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 15503 transitions. [2025-04-13 18:08:08,205 INFO L79 Accepts]: Start accepts. Automaton has 4332 states and 15503 transitions. Word has length 19 [2025-04-13 18:08:08,205 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:08:08,205 INFO L485 AbstractCegarLoop]: Abstraction has 4332 states and 15503 transitions. [2025-04-13 18:08:08,205 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:08,206 INFO L278 IsEmpty]: Start isEmpty. Operand 4332 states and 15503 transitions. [2025-04-13 18:08:08,211 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:08:08,211 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:08:08,211 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:08:08,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Ended with exit code 0 [2025-04-13 18:08:08,411 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,202 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:08:08,412 INFO L403 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:08:08,412 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:08:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2005335937, now seen corresponding path program 196 times [2025-04-13 18:08:08,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:08:08,412 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156232454] [2025-04-13 18:08:08,412 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:08:08,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:08:08,415 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:08:08,418 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:08,418 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:08:08,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:08:08,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:08:08,468 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156232454] [2025-04-13 18:08:08,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156232454] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:08:08,469 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84263992] [2025-04-13 18:08:08,469 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:08:08,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:08:08,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:08:08,470 INFO L229 MonitoredProcess]: Starting monitored process 203 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:08:08,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Waiting until timeout for monitored process [2025-04-13 18:08:08,500 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:08:08,515 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:08,515 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:08:08,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:08,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:08:08,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:08:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:08:08,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:08:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:08:08,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84263992] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:08:08,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:08:08,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 17 [2025-04-13 18:08:08,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191672191] [2025-04-13 18:08:08,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:08:08,597 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:08:08,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:08:08,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:08:08,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:08:08,598 INFO L87 Difference]: Start difference. First operand 4332 states and 15503 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18:08:14,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:08:14,541 INFO L93 Difference]: Finished difference Result 4637 states and 16432 transitions. [2025-04-13 18:08:14,541 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 18:08:14,541 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 19 [2025-04-13 18:08:14,541 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:08:14,553 INFO L225 Difference]: With dead ends: 4637 [2025-04-13 18:08:14,553 INFO L226 Difference]: Without dead ends: 4625 [2025-04-13 18:08:14,553 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=476, Invalid=1164, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:08:14,554 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:08:14,554 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:08:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4625 states. [2025-04-13 18:08:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4625 to 4326. [2025-04-13 18:08:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.578728323699422) internal successors, (15478), 4325 states have internal predecessors, (15478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 15478 transitions. [2025-04-13 18:08:17,925 INFO L79 Accepts]: Start accepts. Automaton has 4326 states and 15478 transitions. Word has length 19 [2025-04-13 18:08:17,925 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:08:17,925 INFO L485 AbstractCegarLoop]: Abstraction has 4326 states and 15478 transitions. [2025-04-13 18:08:17,925 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 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 18:08:17,925 INFO L278 IsEmpty]: Start isEmpty. Operand 4326 states and 15478 transitions. [2025-04-13 18:08:17,932 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:08:17,932 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:08:17,932 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:08:17,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Ended with exit code 0 [2025-04-13 18:08:18,132 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,203 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:08:18,133 INFO L403 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:08:18,133 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:08:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1282526337, now seen corresponding path program 197 times [2025-04-13 18:08:18,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:08:18,133 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017705990] [2025-04-13 18:08:18,133 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:08:18,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:08:18,136 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:08:18,140 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:18,140 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:08:18,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:08:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:08:18,191 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017705990] [2025-04-13 18:08:18,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017705990] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:08:18,191 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497932570] [2025-04-13 18:08:18,191 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:08:18,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:08:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:08:18,193 INFO L229 MonitoredProcess]: Starting monitored process 204 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:08:18,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Waiting until timeout for monitored process [2025-04-13 18:08:18,225 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:08:18,240 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:18,241 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:08:18,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:18,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:08:18,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:08:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:08:18,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:08:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:08:18,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497932570] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:08:18,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:08:18,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 17 [2025-04-13 18:08:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366164921] [2025-04-13 18:08:18,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:08:18,318 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:08:18,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:08:18,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:08:18,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:08:18,319 INFO L87 Difference]: Start difference. First operand 4326 states and 15478 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:08:23,899 INFO L93 Difference]: Finished difference Result 4537 states and 16113 transitions. [2025-04-13 18:08:23,899 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:08:23,899 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:08:23,899 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:08:23,910 INFO L225 Difference]: With dead ends: 4537 [2025-04-13 18:08:23,910 INFO L226 Difference]: Without dead ends: 4514 [2025-04-13 18:08:23,911 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:08:23,911 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:08:23,911 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:08:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states. [2025-04-13 18:08:27,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 4348. [2025-04-13 18:08:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4348 states, 4347 states have (on average 3.5769496204278814) internal successors, (15549), 4347 states have internal predecessors, (15549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4348 states to 4348 states and 15549 transitions. [2025-04-13 18:08:27,328 INFO L79 Accepts]: Start accepts. Automaton has 4348 states and 15549 transitions. Word has length 19 [2025-04-13 18:08:27,328 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:08:27,328 INFO L485 AbstractCegarLoop]: Abstraction has 4348 states and 15549 transitions. [2025-04-13 18:08:27,329 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:27,329 INFO L278 IsEmpty]: Start isEmpty. Operand 4348 states and 15549 transitions. [2025-04-13 18:08:27,336 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:08:27,336 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:08:27,336 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:08:27,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Ended with exit code 0 [2025-04-13 18:08:27,536 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2025-04-13 18:08:27,537 INFO L403 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:08:27,537 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:08:27,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1205236570, now seen corresponding path program 198 times [2025-04-13 18:08:27,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:08:27,537 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834076756] [2025-04-13 18:08:27,537 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:08:27,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:08:27,540 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:08:27,544 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:27,544 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:08:27,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:27,603 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:08:27,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:08:27,603 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834076756] [2025-04-13 18:08:27,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834076756] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:08:27,604 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860472308] [2025-04-13 18:08:27,604 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:08:27,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:08:27,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:08:27,605 INFO L229 MonitoredProcess]: Starting monitored process 205 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:08:27,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Waiting until timeout for monitored process [2025-04-13 18:08:27,637 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:08:27,653 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:27,653 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:08:27,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:27,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:08:27,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:08:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:08:27,712 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:08:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:08:27,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860472308] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:08:27,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:08:27,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 20 [2025-04-13 18:08:27,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903345630] [2025-04-13 18:08:27,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:08:27,749 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:08:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:08:27,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:08:27,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:08:27,749 INFO L87 Difference]: Start difference. First operand 4348 states and 15549 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:34,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:08:34,882 INFO L93 Difference]: Finished difference Result 4855 states and 17166 transitions. [2025-04-13 18:08:34,882 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:08:34,882 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:08:34,882 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:08:34,895 INFO L225 Difference]: With dead ends: 4855 [2025-04-13 18:08:34,895 INFO L226 Difference]: Without dead ends: 4844 [2025-04-13 18:08:34,896 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=402, Invalid=1238, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:08:34,896 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 76 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:08:34,896 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 0 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:08:34,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2025-04-13 18:08:38,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4412. [2025-04-13 18:08:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 3.5753797324869643) internal successors, (15771), 4411 states have internal predecessors, (15771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 15771 transitions. [2025-04-13 18:08:38,373 INFO L79 Accepts]: Start accepts. Automaton has 4412 states and 15771 transitions. Word has length 19 [2025-04-13 18:08:38,373 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:08:38,373 INFO L485 AbstractCegarLoop]: Abstraction has 4412 states and 15771 transitions. [2025-04-13 18:08:38,373 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:38,373 INFO L278 IsEmpty]: Start isEmpty. Operand 4412 states and 15771 transitions. [2025-04-13 18:08:38,379 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:08:38,379 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:08:38,379 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:08:38,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Ended with exit code 0 [2025-04-13 18:08:38,579 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 205 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2025-04-13 18:08:38,580 INFO L403 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:08:38,580 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:08:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash 417586010, now seen corresponding path program 199 times [2025-04-13 18:08:38,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:08:38,580 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237470115] [2025-04-13 18:08:38,580 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:08:38,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:08:38,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:08:38,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:38,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:08:38,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:08:38,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:08:38,642 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237470115] [2025-04-13 18:08:38,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237470115] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:08:38,643 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110182070] [2025-04-13 18:08:38,643 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:08:38,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:08:38,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:08:38,644 INFO L229 MonitoredProcess]: Starting monitored process 206 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:08:38,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Waiting until timeout for monitored process [2025-04-13 18:08:38,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:08:38,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:38,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:08:38,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:38,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:08:38,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:08:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:08:38,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:08:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:08:38,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110182070] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:08:38,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:08:38,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 19 [2025-04-13 18:08:38,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334866571] [2025-04-13 18:08:38,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:08:38,781 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:08:38,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:08:38,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:08:38,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:08:38,781 INFO L87 Difference]: Start difference. First operand 4412 states and 15771 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:44,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:08:44,581 INFO L93 Difference]: Finished difference Result 4697 states and 16713 transitions. [2025-04-13 18:08:44,581 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:08:44,581 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:08:44,581 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:08:44,593 INFO L225 Difference]: With dead ends: 4697 [2025-04-13 18:08:44,593 INFO L226 Difference]: Without dead ends: 4682 [2025-04-13 18:08:44,594 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:08:44,594 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:08:44,594 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:08:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2025-04-13 18:08:47,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 4276. [2025-04-13 18:08:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4275 states have (on average 3.56233918128655) internal successors, (15229), 4275 states have internal predecessors, (15229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 15229 transitions. [2025-04-13 18:08:47,959 INFO L79 Accepts]: Start accepts. Automaton has 4276 states and 15229 transitions. Word has length 19 [2025-04-13 18:08:47,959 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:08:47,959 INFO L485 AbstractCegarLoop]: Abstraction has 4276 states and 15229 transitions. [2025-04-13 18:08:47,959 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:47,959 INFO L278 IsEmpty]: Start isEmpty. Operand 4276 states and 15229 transitions. [2025-04-13 18:08:47,965 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:08:47,965 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:08:47,965 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:08:47,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Forceful destruction successful, exit code 0 [2025-04-13 18:08:48,165 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2025-04-13 18:08:48,165 INFO L403 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:08:48,166 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:08:48,166 INFO L85 PathProgramCache]: Analyzing trace with hash 109349789, now seen corresponding path program 200 times [2025-04-13 18:08:48,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:08:48,166 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520627641] [2025-04-13 18:08:48,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:08:48,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:08:48,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:08:48,172 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:48,172 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:08:48,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:08:48,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:08:48,232 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520627641] [2025-04-13 18:08:48,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520627641] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:08:48,232 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948043435] [2025-04-13 18:08:48,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:08:48,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:08:48,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:08:48,234 INFO L229 MonitoredProcess]: Starting monitored process 207 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:08:48,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Waiting until timeout for monitored process [2025-04-13 18:08:48,277 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:08:48,292 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:48,293 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:08:48,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:48,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:08:48,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:08:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:08:48,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:08:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:08:48,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948043435] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:08:48,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:08:48,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 20 [2025-04-13 18:08:48,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628003870] [2025-04-13 18:08:48,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:08:48,378 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:08:48,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:08:48,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:08:48,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:08:48,378 INFO L87 Difference]: Start difference. First operand 4276 states and 15229 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:53,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:08:53,646 INFO L93 Difference]: Finished difference Result 4426 states and 15726 transitions. [2025-04-13 18:08:53,646 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:08:53,646 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:08:53,646 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:08:53,657 INFO L225 Difference]: With dead ends: 4426 [2025-04-13 18:08:53,657 INFO L226 Difference]: Without dead ends: 4412 [2025-04-13 18:08:53,658 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=710, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:08:53,658 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:08:53,658 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:08:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4412 states. [2025-04-13 18:08:57,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4412 to 4320. [2025-04-13 18:08:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4320 states, 4319 states have (on average 3.562167168326001) internal successors, (15385), 4319 states have internal predecessors, (15385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 15385 transitions. [2025-04-13 18:08:57,075 INFO L79 Accepts]: Start accepts. Automaton has 4320 states and 15385 transitions. Word has length 19 [2025-04-13 18:08:57,076 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:08:57,076 INFO L485 AbstractCegarLoop]: Abstraction has 4320 states and 15385 transitions. [2025-04-13 18:08:57,076 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:08:57,076 INFO L278 IsEmpty]: Start isEmpty. Operand 4320 states and 15385 transitions. [2025-04-13 18:08:57,083 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:08:57,083 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:08:57,083 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:08:57,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Forceful destruction successful, exit code 0 [2025-04-13 18:08:57,284 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2025-04-13 18:08:57,284 INFO L403 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:08:57,284 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:08:57,284 INFO L85 PathProgramCache]: Analyzing trace with hash 882336866, now seen corresponding path program 201 times [2025-04-13 18:08:57,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:08:57,284 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040459418] [2025-04-13 18:08:57,284 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:08:57,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:08:57,287 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:08:57,292 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:57,292 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:08:57,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:08:57,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:08:57,354 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040459418] [2025-04-13 18:08:57,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040459418] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:08:57,354 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337825503] [2025-04-13 18:08:57,354 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:08:57,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:08:57,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:08:57,356 INFO L229 MonitoredProcess]: Starting monitored process 208 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:08:57,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Waiting until timeout for monitored process [2025-04-13 18:08:57,386 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:08:57,402 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:08:57,402 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:08:57,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:08:57,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:08:57,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:08:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:08:57,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:08:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:08:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337825503] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:08:57,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:08:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 20 [2025-04-13 18:08:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599179272] [2025-04-13 18:08:57,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:08:57,502 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:08:57,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:08:57,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:08:57,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:08:57,502 INFO L87 Difference]: Start difference. First operand 4320 states and 15385 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:04,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:04,569 INFO L93 Difference]: Finished difference Result 5149 states and 18336 transitions. [2025-04-13 18:09:04,569 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 18:09:04,570 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:09:04,570 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:04,581 INFO L225 Difference]: With dead ends: 5149 [2025-04-13 18:09:04,582 INFO L226 Difference]: Without dead ends: 5142 [2025-04-13 18:09:04,582 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:09:04,582 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:04,582 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:09:04,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5142 states. [2025-04-13 18:09:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5142 to 4602. [2025-04-13 18:09:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4602 states, 4601 states have (on average 3.5822647250597695) internal successors, (16482), 4601 states have internal predecessors, (16482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 16482 transitions. [2025-04-13 18:09:08,211 INFO L79 Accepts]: Start accepts. Automaton has 4602 states and 16482 transitions. Word has length 19 [2025-04-13 18:09:08,211 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:08,211 INFO L485 AbstractCegarLoop]: Abstraction has 4602 states and 16482 transitions. [2025-04-13 18:09:08,211 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:08,211 INFO L278 IsEmpty]: Start isEmpty. Operand 4602 states and 16482 transitions. [2025-04-13 18:09:08,217 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:09:08,218 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:08,218 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:08,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Ended with exit code 0 [2025-04-13 18:09:08,418 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,208 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:08,418 INFO L403 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:09:08,418 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:08,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1611764480, now seen corresponding path program 202 times [2025-04-13 18:09:08,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:08,419 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057905519] [2025-04-13 18:09:08,419 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:09:08,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:08,421 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:09:08,424 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:09:08,424 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:09:08,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:09:08,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:08,471 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057905519] [2025-04-13 18:09:08,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057905519] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:08,471 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405828164] [2025-04-13 18:09:08,471 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:09:08,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:08,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:08,473 INFO L229 MonitoredProcess]: Starting monitored process 209 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:09:08,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Waiting until timeout for monitored process [2025-04-13 18:09:08,522 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:09:08,538 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:09:08,538 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:09:08,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:08,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:09:08,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:08,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:09:08,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405828164] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:09:08,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:09:08,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2025-04-13 18:09:08,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641881755] [2025-04-13 18:09:08,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:09:08,613 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:09:08,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:08,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:09:08,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:09:08,613 INFO L87 Difference]: Start difference. First operand 4602 states and 16482 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:14,858 INFO L93 Difference]: Finished difference Result 5005 states and 17921 transitions. [2025-04-13 18:09:14,858 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:09:14,858 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:09:14,858 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:14,871 INFO L225 Difference]: With dead ends: 5005 [2025-04-13 18:09:14,871 INFO L226 Difference]: Without dead ends: 4994 [2025-04-13 18:09:14,872 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:09:14,872 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:14,872 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:09:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4994 states. [2025-04-13 18:09:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4994 to 4556. [2025-04-13 18:09:18,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 4555 states have (on average 3.573435784851811) internal successors, (16277), 4555 states have internal predecessors, (16277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 16277 transitions. [2025-04-13 18:09:18,441 INFO L79 Accepts]: Start accepts. Automaton has 4556 states and 16277 transitions. Word has length 19 [2025-04-13 18:09:18,441 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:18,441 INFO L485 AbstractCegarLoop]: Abstraction has 4556 states and 16277 transitions. [2025-04-13 18:09:18,441 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:18,441 INFO L278 IsEmpty]: Start isEmpty. Operand 4556 states and 16277 transitions. [2025-04-13 18:09:18,448 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:09:18,448 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:18,448 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:18,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Ended with exit code 0 [2025-04-13 18:09:18,648 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2025-04-13 18:09:18,648 INFO L403 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:09:18,649 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 98848828, now seen corresponding path program 203 times [2025-04-13 18:09:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:18,649 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807756688] [2025-04-13 18:09:18,649 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:09:18,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:18,652 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:09:18,655 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:09:18,656 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:09:18,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:09:18,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:18,702 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807756688] [2025-04-13 18:09:18,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807756688] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:18,702 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940681646] [2025-04-13 18:09:18,702 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:09:18,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:18,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:18,704 INFO L229 MonitoredProcess]: Starting monitored process 210 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:09:18,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Waiting until timeout for monitored process [2025-04-13 18:09:18,734 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:09:18,749 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:09:18,749 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:09:18,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:18,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:09:18,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:18,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:09:18,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940681646] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:09:18,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:09:18,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 16 [2025-04-13 18:09:18,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637374349] [2025-04-13 18:09:18,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:09:18,826 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:09:18,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:18,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:09:18,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:09:18,826 INFO L87 Difference]: Start difference. First operand 4556 states and 16277 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:25,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:25,160 INFO L93 Difference]: Finished difference Result 5287 states and 18958 transitions. [2025-04-13 18:09:25,161 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 18:09:25,161 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:09:25,161 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:25,173 INFO L225 Difference]: With dead ends: 5287 [2025-04-13 18:09:25,173 INFO L226 Difference]: Without dead ends: 5272 [2025-04-13 18:09:25,174 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:09:25,174 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:25,174 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:09:25,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5272 states. [2025-04-13 18:09:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5272 to 4600. [2025-04-13 18:09:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 4599 states have (on average 3.5714285714285716) internal successors, (16425), 4599 states have internal predecessors, (16425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 16425 transitions. [2025-04-13 18:09:28,734 INFO L79 Accepts]: Start accepts. Automaton has 4600 states and 16425 transitions. Word has length 19 [2025-04-13 18:09:28,734 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:28,734 INFO L485 AbstractCegarLoop]: Abstraction has 4600 states and 16425 transitions. [2025-04-13 18:09:28,735 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:28,735 INFO L278 IsEmpty]: Start isEmpty. Operand 4600 states and 16425 transitions. [2025-04-13 18:09:28,740 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:09:28,740 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:28,740 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:28,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Ended with exit code 0 [2025-04-13 18:09:28,940 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2025-04-13 18:09:28,941 INFO L403 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:09:28,941 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:28,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1588253824, now seen corresponding path program 204 times [2025-04-13 18:09:28,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:28,941 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492332094] [2025-04-13 18:09:28,941 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:09:28,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:28,944 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:09:28,965 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:09:28,965 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:09:28,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:29,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:29,024 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492332094] [2025-04-13 18:09:29,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492332094] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:29,024 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878474461] [2025-04-13 18:09:29,024 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:09:29,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:29,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:29,026 INFO L229 MonitoredProcess]: Starting monitored process 211 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:09:29,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Waiting until timeout for monitored process [2025-04-13 18:09:29,055 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:09:29,070 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:09:29,070 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:09:29,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:29,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:09:29,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:29,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:09:29,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878474461] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:09:29,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:09:29,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2025-04-13 18:09:29,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320836566] [2025-04-13 18:09:29,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:09:29,165 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:09:29,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:29,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:09:29,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:09:29,165 INFO L87 Difference]: Start difference. First operand 4600 states and 16425 transitions. Second operand has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:35,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:35,627 INFO L93 Difference]: Finished difference Result 5307 states and 18894 transitions. [2025-04-13 18:09:35,627 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:09:35,627 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:09:35,627 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:35,640 INFO L225 Difference]: With dead ends: 5307 [2025-04-13 18:09:35,640 INFO L226 Difference]: Without dead ends: 5288 [2025-04-13 18:09:35,641 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:09:35,641 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:35,641 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:09:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5288 states. [2025-04-13 18:09:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 4692. [2025-04-13 18:09:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4691 states have (on average 3.5704540609678106) internal successors, (16749), 4691 states have internal predecessors, (16749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:39,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 16749 transitions. [2025-04-13 18:09:39,278 INFO L79 Accepts]: Start accepts. Automaton has 4692 states and 16749 transitions. Word has length 19 [2025-04-13 18:09:39,279 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:39,279 INFO L485 AbstractCegarLoop]: Abstraction has 4692 states and 16749 transitions. [2025-04-13 18:09:39,279 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:39,279 INFO L278 IsEmpty]: Start isEmpty. Operand 4692 states and 16749 transitions. [2025-04-13 18:09:39,286 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:09:39,286 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:39,286 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:39,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Ended with exit code 0 [2025-04-13 18:09:39,486 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 211 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2025-04-13 18:09:39,486 INFO L403 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:09:39,486 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:39,487 INFO L85 PathProgramCache]: Analyzing trace with hash 515168444, now seen corresponding path program 205 times [2025-04-13 18:09:39,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:39,487 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977369478] [2025-04-13 18:09:39,487 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:09:39,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:39,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:09:39,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:09:39,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:39,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:39,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:39,552 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977369478] [2025-04-13 18:09:39,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977369478] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:39,552 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788840415] [2025-04-13 18:09:39,552 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:09:39,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:39,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:39,554 INFO L229 MonitoredProcess]: Starting monitored process 212 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:09:39,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Waiting until timeout for monitored process [2025-04-13 18:09:39,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:09:39,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:09:39,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:39,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:39,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:09:39,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:39,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:39,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788840415] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:09:39,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:09:39,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-04-13 18:09:39,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610967254] [2025-04-13 18:09:39,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:09:39,709 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:09:39,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:39,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:09:39,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:09:39,709 INFO L87 Difference]: Start difference. First operand 4692 states and 16749 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:46,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:46,417 INFO L93 Difference]: Finished difference Result 5313 states and 18819 transitions. [2025-04-13 18:09:46,417 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:09:46,417 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:09:46,417 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:46,429 INFO L225 Difference]: With dead ends: 5313 [2025-04-13 18:09:46,430 INFO L226 Difference]: Without dead ends: 5290 [2025-04-13 18:09:46,430 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:09:46,430 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:46,430 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:09:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5290 states. [2025-04-13 18:09:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5290 to 4752. [2025-04-13 18:09:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4751 states have (on average 3.575036834350663) internal successors, (16985), 4751 states have internal predecessors, (16985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:50,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 16985 transitions. [2025-04-13 18:09:50,070 INFO L79 Accepts]: Start accepts. Automaton has 4752 states and 16985 transitions. Word has length 19 [2025-04-13 18:09:50,070 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:50,070 INFO L485 AbstractCegarLoop]: Abstraction has 4752 states and 16985 transitions. [2025-04-13 18:09:50,070 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:50,070 INFO L278 IsEmpty]: Start isEmpty. Operand 4752 states and 16985 transitions. [2025-04-13 18:09:50,075 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:09:50,076 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:50,076 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:50,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Ended with exit code 0 [2025-04-13 18:09:50,276 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,212 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:50,276 INFO L403 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:09:50,276 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:50,276 INFO L85 PathProgramCache]: Analyzing trace with hash 998713309, now seen corresponding path program 206 times [2025-04-13 18:09:50,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:50,276 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122596124] [2025-04-13 18:09:50,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:09:50,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:50,279 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:09:50,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:09:50,282 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:09:50,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:50,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:50,348 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122596124] [2025-04-13 18:09:50,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122596124] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:50,348 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503404097] [2025-04-13 18:09:50,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:09:50,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:50,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:50,350 INFO L229 MonitoredProcess]: Starting monitored process 213 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:09:50,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Waiting until timeout for monitored process [2025-04-13 18:09:50,381 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:09:50,397 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:09:50,397 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:09:50,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:50,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:09:50,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:50,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:09:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:50,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503404097] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:09:50,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:09:50,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-04-13 18:09:50,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34671975] [2025-04-13 18:09:50,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:09:50,500 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:09:50,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:09:50,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:09:50,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:09:50,501 INFO L87 Difference]: Start difference. First operand 4752 states and 16985 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:56,753 INFO L93 Difference]: Finished difference Result 4967 states and 17581 transitions. [2025-04-13 18:09:56,753 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-04-13 18:09:56,753 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:09:56,753 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:56,765 INFO L225 Difference]: With dead ends: 4967 [2025-04-13 18:09:56,765 INFO L226 Difference]: Without dead ends: 4959 [2025-04-13 18:09:56,766 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=705, Invalid=2157, Unknown=0, NotChecked=0, Total=2862 [2025-04-13 18:09:56,766 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:56,766 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:09:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4959 states. [2025-04-13 18:10:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4959 to 4726. [2025-04-13 18:10:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4726 states, 4725 states have (on average 3.572910052910053) internal successors, (16882), 4725 states have internal predecessors, (16882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4726 states to 4726 states and 16882 transitions. [2025-04-13 18:10:00,359 INFO L79 Accepts]: Start accepts. Automaton has 4726 states and 16882 transitions. Word has length 19 [2025-04-13 18:10:00,359 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:10:00,359 INFO L485 AbstractCegarLoop]: Abstraction has 4726 states and 16882 transitions. [2025-04-13 18:10:00,359 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:00,359 INFO L278 IsEmpty]: Start isEmpty. Operand 4726 states and 16882 transitions. [2025-04-13 18:10:00,365 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:10:00,365 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:10:00,365 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:10:00,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Ended with exit code 0 [2025-04-13 18:10:00,565 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,213 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:00,566 INFO L403 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:10:00,566 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:10:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash 900012329, now seen corresponding path program 207 times [2025-04-13 18:10:00,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:10:00,566 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672520912] [2025-04-13 18:10:00,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:10:00,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:10:00,569 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:10:00,575 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:00,575 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:10:00,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:10:00,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:10:00,633 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672520912] [2025-04-13 18:10:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672520912] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:10:00,633 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236263359] [2025-04-13 18:10:00,633 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:10:00,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:00,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:10:00,634 INFO L229 MonitoredProcess]: Starting monitored process 214 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:10:00,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Waiting until timeout for monitored process [2025-04-13 18:10:00,664 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:10:00,679 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:00,679 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:10:00,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:00,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:10:00,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:10:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:10:00,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:10:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:10:00,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236263359] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:10:00,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:10:00,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2025-04-13 18:10:00,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274647221] [2025-04-13 18:10:00,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:10:00,762 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:10:00,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:10:00,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:10:00,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:10:00,762 INFO L87 Difference]: Start difference. First operand 4726 states and 16882 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:10:06,805 INFO L93 Difference]: Finished difference Result 4958 states and 17592 transitions. [2025-04-13 18:10:06,806 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:10:06,806 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:10:06,806 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:10:06,817 INFO L225 Difference]: With dead ends: 4958 [2025-04-13 18:10:06,817 INFO L226 Difference]: Without dead ends: 4935 [2025-04-13 18:10:06,818 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=354, Invalid=978, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:10:06,818 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:10:06,818 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:10:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2025-04-13 18:10:10,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4734. [2025-04-13 18:10:10,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4734 states, 4733 states have (on average 3.5732093809423198) internal successors, (16912), 4733 states have internal predecessors, (16912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 16912 transitions. [2025-04-13 18:10:10,438 INFO L79 Accepts]: Start accepts. Automaton has 4734 states and 16912 transitions. Word has length 19 [2025-04-13 18:10:10,438 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:10:10,438 INFO L485 AbstractCegarLoop]: Abstraction has 4734 states and 16912 transitions. [2025-04-13 18:10:10,438 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:10,438 INFO L278 IsEmpty]: Start isEmpty. Operand 4734 states and 16912 transitions. [2025-04-13 18:10:10,444 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:10:10,444 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:10:10,444 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:10:10,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Ended with exit code 0 [2025-04-13 18:10:10,644 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable220 [2025-04-13 18:10:10,644 INFO L403 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:10:10,644 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:10:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash -907192060, now seen corresponding path program 208 times [2025-04-13 18:10:10,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:10:10,645 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055091550] [2025-04-13 18:10:10,645 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:10:10,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:10:10,647 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:10:10,650 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:10,650 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:10:10,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:10:10,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:10:10,704 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055091550] [2025-04-13 18:10:10,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055091550] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:10:10,705 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447336622] [2025-04-13 18:10:10,705 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:10:10,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:10,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:10:10,707 INFO L229 MonitoredProcess]: Starting monitored process 215 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:10:10,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Waiting until timeout for monitored process [2025-04-13 18:10:10,737 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:10:10,753 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:10,753 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:10:10,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:10,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:10:10,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:10:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:10:10,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:10:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:10:10,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447336622] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:10:10,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:10:10,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-04-13 18:10:10,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062928056] [2025-04-13 18:10:10,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:10:10,839 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:10:10,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:10:10,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:10:10,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:10:10,840 INFO L87 Difference]: Start difference. First operand 4734 states and 16912 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:18,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:10:18,363 INFO L93 Difference]: Finished difference Result 5259 states and 18577 transitions. [2025-04-13 18:10:18,364 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 18:10:18,364 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:10:18,364 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:10:18,375 INFO L225 Difference]: With dead ends: 5259 [2025-04-13 18:10:18,375 INFO L226 Difference]: Without dead ends: 5250 [2025-04-13 18:10:18,376 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=406, Invalid=1076, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:10:18,376 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:10:18,376 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:10:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2025-04-13 18:10:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 4740. [2025-04-13 18:10:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4739 states have (on average 3.572694661320954) internal successors, (16931), 4739 states have internal predecessors, (16931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 16931 transitions. [2025-04-13 18:10:22,004 INFO L79 Accepts]: Start accepts. Automaton has 4740 states and 16931 transitions. Word has length 19 [2025-04-13 18:10:22,004 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:10:22,004 INFO L485 AbstractCegarLoop]: Abstraction has 4740 states and 16931 transitions. [2025-04-13 18:10:22,004 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:22,004 INFO L278 IsEmpty]: Start isEmpty. Operand 4740 states and 16931 transitions. [2025-04-13 18:10:22,011 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:10:22,011 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:10:22,011 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:10:22,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Ended with exit code 0 [2025-04-13 18:10:22,211 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 215 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2025-04-13 18:10:22,211 INFO L403 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:10:22,211 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:10:22,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1694842620, now seen corresponding path program 209 times [2025-04-13 18:10:22,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:10:22,212 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460550170] [2025-04-13 18:10:22,212 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:10:22,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:10:22,214 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:10:22,218 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:22,218 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:10:22,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:22,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:10:22,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:10:22,267 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460550170] [2025-04-13 18:10:22,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460550170] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:10:22,267 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268067355] [2025-04-13 18:10:22,267 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:10:22,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:22,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:10:22,269 INFO L229 MonitoredProcess]: Starting monitored process 216 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:10:22,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Waiting until timeout for monitored process [2025-04-13 18:10:22,299 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:10:22,315 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:22,315 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:10:22,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:22,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:10:22,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:10:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:10:22,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:10:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:10:22,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268067355] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:10:22,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:10:22,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2025-04-13 18:10:22,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181484229] [2025-04-13 18:10:22,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:10:22,396 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:10:22,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:10:22,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:10:22,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:10:22,397 INFO L87 Difference]: Start difference. First operand 4740 states and 16931 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:28,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:10:28,785 INFO L93 Difference]: Finished difference Result 5115 states and 18211 transitions. [2025-04-13 18:10:28,786 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:10:28,786 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:10:28,786 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:10:28,797 INFO L225 Difference]: With dead ends: 5115 [2025-04-13 18:10:28,797 INFO L226 Difference]: Without dead ends: 5104 [2025-04-13 18:10:28,798 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:10:28,798 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:10:28,798 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:10:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5104 states. [2025-04-13 18:10:32,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5104 to 4728. [2025-04-13 18:10:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4728 states, 4727 states have (on average 3.5711867992384176) internal successors, (16881), 4727 states have internal predecessors, (16881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 16881 transitions. [2025-04-13 18:10:32,396 INFO L79 Accepts]: Start accepts. Automaton has 4728 states and 16881 transitions. Word has length 19 [2025-04-13 18:10:32,396 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:10:32,396 INFO L485 AbstractCegarLoop]: Abstraction has 4728 states and 16881 transitions. [2025-04-13 18:10:32,396 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:32,396 INFO L278 IsEmpty]: Start isEmpty. Operand 4728 states and 16881 transitions. [2025-04-13 18:10:32,402 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:10:32,402 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:10:32,402 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:10:32,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Ended with exit code 0 [2025-04-13 18:10:32,602 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222,216 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:32,602 INFO L403 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:10:32,603 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:10:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash -833197527, now seen corresponding path program 210 times [2025-04-13 18:10:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:10:32,603 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041393391] [2025-04-13 18:10:32,603 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:10:32,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:10:32,606 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:10:32,610 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:32,610 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:10:32,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:10:32,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:10:32,665 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041393391] [2025-04-13 18:10:32,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041393391] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:10:32,665 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741620188] [2025-04-13 18:10:32,665 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:10:32,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:32,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:10:32,667 INFO L229 MonitoredProcess]: Starting monitored process 217 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:10:32,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Waiting until timeout for monitored process [2025-04-13 18:10:32,697 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:10:32,712 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:32,712 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:10:32,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:32,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:10:32,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:10:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:10:32,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:10:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:10:32,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741620188] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:10:32,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:10:32,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2025-04-13 18:10:32,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945821296] [2025-04-13 18:10:32,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:10:32,795 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:10:32,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:10:32,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:10:32,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:10:32,795 INFO L87 Difference]: Start difference. First operand 4728 states and 16881 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:39,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:10:39,032 INFO L93 Difference]: Finished difference Result 5113 states and 18187 transitions. [2025-04-13 18:10:39,032 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 18:10:39,032 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:10:39,032 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:10:39,043 INFO L225 Difference]: With dead ends: 5113 [2025-04-13 18:10:39,044 INFO L226 Difference]: Without dead ends: 5102 [2025-04-13 18:10:39,044 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=522, Invalid=1118, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:10:39,044 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:10:39,044 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:10:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2025-04-13 18:10:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 4764. [2025-04-13 18:10:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4764 states, 4763 states have (on average 3.571068654209532) internal successors, (17009), 4763 states have internal predecessors, (17009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4764 states to 4764 states and 17009 transitions. [2025-04-13 18:10:42,712 INFO L79 Accepts]: Start accepts. Automaton has 4764 states and 17009 transitions. Word has length 19 [2025-04-13 18:10:42,712 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:10:42,712 INFO L485 AbstractCegarLoop]: Abstraction has 4764 states and 17009 transitions. [2025-04-13 18:10:42,712 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:42,712 INFO L278 IsEmpty]: Start isEmpty. Operand 4764 states and 17009 transitions. [2025-04-13 18:10:42,719 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:10:42,719 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:10:42,719 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:10:42,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Forceful destruction successful, exit code 0 [2025-04-13 18:10:42,920 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2025-04-13 18:10:42,920 INFO L403 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:10:42,920 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:10:42,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2045089114, now seen corresponding path program 211 times [2025-04-13 18:10:42,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:10:42,920 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460131585] [2025-04-13 18:10:42,920 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:10:42,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:10:42,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:10:42,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:42,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:10:42,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:10:42,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:10:42,978 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460131585] [2025-04-13 18:10:42,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460131585] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:10:42,978 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083175377] [2025-04-13 18:10:42,978 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:10:42,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:42,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:10:42,980 INFO L229 MonitoredProcess]: Starting monitored process 218 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:10:42,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Waiting until timeout for monitored process [2025-04-13 18:10:43,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:10:43,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:43,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:10:43,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:43,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:10:43,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:10:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:10:43,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:10:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:10:43,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083175377] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:10:43,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:10:43,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2025-04-13 18:10:43,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134896387] [2025-04-13 18:10:43,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:10:43,102 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:10:43,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:10:43,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:10:43,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:10:43,103 INFO L87 Difference]: Start difference. First operand 4764 states and 17009 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:49,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:10:49,544 INFO L93 Difference]: Finished difference Result 5249 states and 18628 transitions. [2025-04-13 18:10:49,545 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-04-13 18:10:49,545 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:10:49,545 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:10:49,557 INFO L225 Difference]: With dead ends: 5249 [2025-04-13 18:10:49,557 INFO L226 Difference]: Without dead ends: 5228 [2025-04-13 18:10:49,558 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:10:49,558 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:10:49,558 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:10:49,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2025-04-13 18:10:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 4764. [2025-04-13 18:10:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4764 states, 4763 states have (on average 3.5698089439428933) internal successors, (17003), 4763 states have internal predecessors, (17003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4764 states to 4764 states and 17003 transitions. [2025-04-13 18:10:53,192 INFO L79 Accepts]: Start accepts. Automaton has 4764 states and 17003 transitions. Word has length 19 [2025-04-13 18:10:53,192 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:10:53,192 INFO L485 AbstractCegarLoop]: Abstraction has 4764 states and 17003 transitions. [2025-04-13 18:10:53,192 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:53,192 INFO L278 IsEmpty]: Start isEmpty. Operand 4764 states and 17003 transitions. [2025-04-13 18:10:53,198 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:10:53,198 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:10:53,198 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:10:53,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Ended with exit code 0 [2025-04-13 18:10:53,398 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2025-04-13 18:10:53,398 INFO L403 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:10:53,398 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:10:53,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1472728583, now seen corresponding path program 212 times [2025-04-13 18:10:53,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:10:53,399 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350995891] [2025-04-13 18:10:53,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:10:53,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:10:53,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:10:53,404 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:53,404 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:10:53,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:10:53,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:10:53,458 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350995891] [2025-04-13 18:10:53,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350995891] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:10:53,459 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164570487] [2025-04-13 18:10:53,459 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:10:53,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:10:53,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:10:53,460 INFO L229 MonitoredProcess]: Starting monitored process 219 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:10:53,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Waiting until timeout for monitored process [2025-04-13 18:10:53,489 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:10:53,505 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:10:53,505 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:10:53,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:10:53,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:10:53,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:10:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:10:53,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:10:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:10:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164570487] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:10:53,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:10:53,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2025-04-13 18:10:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317531387] [2025-04-13 18:10:53,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:10:53,588 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:10:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:10:53,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:10:53,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:10:53,589 INFO L87 Difference]: Start difference. First operand 4764 states and 17003 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:10:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:10:59,846 INFO L93 Difference]: Finished difference Result 5064 states and 17908 transitions. [2025-04-13 18:10:59,846 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 18:10:59,846 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:10:59,846 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:10:59,857 INFO L225 Difference]: With dead ends: 5064 [2025-04-13 18:10:59,857 INFO L226 Difference]: Without dead ends: 5054 [2025-04-13 18:10:59,858 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=393, Invalid=939, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:10:59,858 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:10:59,858 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:10:59,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2025-04-13 18:11:03,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 4768. [2025-04-13 18:11:03,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4767 states have (on average 3.5689112649465073) internal successors, (17013), 4767 states have internal predecessors, (17013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 17013 transitions. [2025-04-13 18:11:03,508 INFO L79 Accepts]: Start accepts. Automaton has 4768 states and 17013 transitions. Word has length 19 [2025-04-13 18:11:03,508 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:11:03,508 INFO L485 AbstractCegarLoop]: Abstraction has 4768 states and 17013 transitions. [2025-04-13 18:11:03,508 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:03,508 INFO L278 IsEmpty]: Start isEmpty. Operand 4768 states and 17013 transitions. [2025-04-13 18:11:03,514 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:11:03,514 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:11:03,514 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:11:03,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Forceful destruction successful, exit code 0 [2025-04-13 18:11:03,715 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2025-04-13 18:11:03,715 INFO L403 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:11:03,715 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:11:03,715 INFO L85 PathProgramCache]: Analyzing trace with hash -17828540, now seen corresponding path program 213 times [2025-04-13 18:11:03,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:11:03,715 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470296216] [2025-04-13 18:11:03,715 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:11:03,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:11:03,718 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:11:03,724 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:03,724 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:11:03,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:11:03,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:11:03,782 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470296216] [2025-04-13 18:11:03,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470296216] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:11:03,782 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558543656] [2025-04-13 18:11:03,783 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:11:03,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:03,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:11:03,784 INFO L229 MonitoredProcess]: Starting monitored process 220 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:11:03,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Waiting until timeout for monitored process [2025-04-13 18:11:03,814 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:11:03,831 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:03,831 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:11:03,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:03,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:11:03,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:11:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:11:03,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:11:03,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:11:03,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558543656] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:11:03,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:11:03,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 18 [2025-04-13 18:11:03,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318808178] [2025-04-13 18:11:03,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:11:03,911 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:11:03,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:11:03,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:11:03,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:11:03,911 INFO L87 Difference]: Start difference. First operand 4768 states and 17013 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:11:10,473 INFO L93 Difference]: Finished difference Result 5275 states and 18603 transitions. [2025-04-13 18:11:10,474 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 18:11:10,474 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:11:10,474 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:11:10,486 INFO L225 Difference]: With dead ends: 5275 [2025-04-13 18:11:10,486 INFO L226 Difference]: Without dead ends: 5256 [2025-04-13 18:11:10,487 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:11:10,487 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:11:10,487 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:11:10,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2025-04-13 18:11:14,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 4768. [2025-04-13 18:11:14,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4767 states have (on average 3.567652611705475) internal successors, (17007), 4767 states have internal predecessors, (17007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 17007 transitions. [2025-04-13 18:11:14,144 INFO L79 Accepts]: Start accepts. Automaton has 4768 states and 17007 transitions. Word has length 19 [2025-04-13 18:11:14,144 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:11:14,144 INFO L485 AbstractCegarLoop]: Abstraction has 4768 states and 17007 transitions. [2025-04-13 18:11:14,144 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:14,144 INFO L278 IsEmpty]: Start isEmpty. Operand 4768 states and 17007 transitions. [2025-04-13 18:11:14,150 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:11:14,150 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:11:14,150 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:11:14,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Ended with exit code 0 [2025-04-13 18:11:14,351 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,220 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:14,351 INFO L403 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:11:14,351 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:11:14,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1660337667, now seen corresponding path program 214 times [2025-04-13 18:11:14,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:11:14,351 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677542050] [2025-04-13 18:11:14,351 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:11:14,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:11:14,354 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:11:14,357 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:14,357 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:11:14,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:11:14,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:11:14,406 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677542050] [2025-04-13 18:11:14,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677542050] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:11:14,406 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212945991] [2025-04-13 18:11:14,406 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:11:14,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:14,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:11:14,408 INFO L229 MonitoredProcess]: Starting monitored process 221 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:11:14,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Waiting until timeout for monitored process [2025-04-13 18:11:14,437 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:11:14,452 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:14,452 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:11:14,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:14,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:11:14,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:11:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:11:14,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:11:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:11:14,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212945991] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:11:14,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:11:14,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2025-04-13 18:11:14,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944345506] [2025-04-13 18:11:14,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:11:14,535 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:11:14,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:11:14,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:11:14,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:11:14,535 INFO L87 Difference]: Start difference. First operand 4768 states and 17007 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:11:21,202 INFO L93 Difference]: Finished difference Result 5114 states and 18041 transitions. [2025-04-13 18:11:21,202 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 18:11:21,202 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:11:21,202 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:11:21,215 INFO L225 Difference]: With dead ends: 5114 [2025-04-13 18:11:21,215 INFO L226 Difference]: Without dead ends: 5106 [2025-04-13 18:11:21,216 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=399, Invalid=933, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:11:21,216 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:11:21,216 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:11:21,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5106 states. [2025-04-13 18:11:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5106 to 4780. [2025-04-13 18:11:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4780 states, 4779 states have (on average 3.5666457417869846) internal successors, (17045), 4779 states have internal predecessors, (17045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:24,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4780 states to 4780 states and 17045 transitions. [2025-04-13 18:11:24,935 INFO L79 Accepts]: Start accepts. Automaton has 4780 states and 17045 transitions. Word has length 19 [2025-04-13 18:11:24,935 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:11:24,935 INFO L485 AbstractCegarLoop]: Abstraction has 4780 states and 17045 transitions. [2025-04-13 18:11:24,935 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:24,935 INFO L278 IsEmpty]: Start isEmpty. Operand 4780 states and 17045 transitions. [2025-04-13 18:11:24,941 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:11:24,941 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:11:24,941 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:11:24,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Ended with exit code 0 [2025-04-13 18:11:25,141 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 221 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2025-04-13 18:11:25,142 INFO L403 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:11:25,142 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:11:25,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2003078841, now seen corresponding path program 215 times [2025-04-13 18:11:25,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:11:25,142 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956282269] [2025-04-13 18:11:25,142 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:11:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:11:25,145 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:11:25,148 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:25,148 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:11:25,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:11:25,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:11:25,196 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956282269] [2025-04-13 18:11:25,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956282269] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:11:25,196 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310864304] [2025-04-13 18:11:25,196 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:11:25,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:25,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:11:25,198 INFO L229 MonitoredProcess]: Starting monitored process 222 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:11:25,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Waiting until timeout for monitored process [2025-04-13 18:11:25,228 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:11:25,243 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:25,243 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:11:25,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:25,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:11:25,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:11:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:11:25,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:11:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:11:25,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310864304] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:11:25,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:11:25,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 16 [2025-04-13 18:11:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787159510] [2025-04-13 18:11:25,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:11:25,312 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:11:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:11:25,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:11:25,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:11:25,312 INFO L87 Difference]: Start difference. First operand 4780 states and 17045 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:11:31,112 INFO L93 Difference]: Finished difference Result 4921 states and 17488 transitions. [2025-04-13 18:11:31,112 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:11:31,112 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:11:31,112 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:11:31,123 INFO L225 Difference]: With dead ends: 4921 [2025-04-13 18:11:31,123 INFO L226 Difference]: Without dead ends: 4907 [2025-04-13 18:11:31,124 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:11:31,124 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:11:31,124 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:11:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2025-04-13 18:11:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 4798. [2025-04-13 18:11:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4797 states have (on average 3.5668125912028352) internal successors, (17110), 4797 states have internal predecessors, (17110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 17110 transitions. [2025-04-13 18:11:34,778 INFO L79 Accepts]: Start accepts. Automaton has 4798 states and 17110 transitions. Word has length 19 [2025-04-13 18:11:34,778 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:11:34,778 INFO L485 AbstractCegarLoop]: Abstraction has 4798 states and 17110 transitions. [2025-04-13 18:11:34,778 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:34,779 INFO L278 IsEmpty]: Start isEmpty. Operand 4798 states and 17110 transitions. [2025-04-13 18:11:34,785 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:11:34,785 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:11:34,785 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:11:34,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Ended with exit code 0 [2025-04-13 18:11:34,985 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,222 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:34,985 INFO L403 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:11:34,985 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:11:34,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1230091764, now seen corresponding path program 216 times [2025-04-13 18:11:34,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:11:34,986 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009816140] [2025-04-13 18:11:34,986 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:11:34,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:11:34,988 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:11:34,993 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:34,993 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:11:34,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:11:35,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:11:35,077 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009816140] [2025-04-13 18:11:35,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009816140] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:11:35,077 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390751382] [2025-04-13 18:11:35,077 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:11:35,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:35,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:11:35,079 INFO L229 MonitoredProcess]: Starting monitored process 223 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:11:35,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Waiting until timeout for monitored process [2025-04-13 18:11:35,109 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-04-13 18:11:35,125 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:35,125 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:11:35,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:35,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:11:35,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:11:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:11:35,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:11:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:11:35,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390751382] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:11:35,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:11:35,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2025-04-13 18:11:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719367315] [2025-04-13 18:11:35,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:11:35,231 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:11:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:11:35,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:11:35,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:11:35,232 INFO L87 Difference]: Start difference. First operand 4798 states and 17110 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:11:42,862 INFO L93 Difference]: Finished difference Result 5555 states and 19698 transitions. [2025-04-13 18:11:42,862 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 18:11:42,862 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:11:42,862 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:11:42,875 INFO L225 Difference]: With dead ends: 5555 [2025-04-13 18:11:42,875 INFO L226 Difference]: Without dead ends: 5548 [2025-04-13 18:11:42,875 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=435, Invalid=1205, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:11:42,876 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:11:42,876 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:11:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2025-04-13 18:11:46,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 4960. [2025-04-13 18:11:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4960 states, 4959 states have (on average 3.577939100625126) internal successors, (17743), 4959 states have internal predecessors, (17743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 17743 transitions. [2025-04-13 18:11:46,713 INFO L79 Accepts]: Start accepts. Automaton has 4960 states and 17743 transitions. Word has length 19 [2025-04-13 18:11:46,713 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:11:46,713 INFO L485 AbstractCegarLoop]: Abstraction has 4960 states and 17743 transitions. [2025-04-13 18:11:46,713 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:46,714 INFO L278 IsEmpty]: Start isEmpty. Operand 4960 states and 17743 transitions. [2025-04-13 18:11:46,720 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:11:46,720 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:11:46,720 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:11:46,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Ended with exit code 0 [2025-04-13 18:11:46,920 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,223 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:46,920 INFO L403 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:11:46,920 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:11:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash 570774186, now seen corresponding path program 217 times [2025-04-13 18:11:46,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:11:46,921 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364727693] [2025-04-13 18:11:46,921 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:11:46,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:11:46,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:11:46,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:46,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:11:46,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:11:46,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:11:46,983 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364727693] [2025-04-13 18:11:46,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364727693] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:11:46,983 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033405057] [2025-04-13 18:11:46,983 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:11:46,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:46,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:11:46,985 INFO L229 MonitoredProcess]: Starting monitored process 224 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:11:46,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Waiting until timeout for monitored process [2025-04-13 18:11:47,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:11:47,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:47,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:11:47,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:47,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:11:47,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:11:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:11:47,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:11:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:11:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033405057] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:11:47,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:11:47,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2025-04-13 18:11:47,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515185845] [2025-04-13 18:11:47,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:11:47,111 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:11:47,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:11:47,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:11:47,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:11:47,111 INFO L87 Difference]: Start difference. First operand 4960 states and 17743 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:53,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:11:53,730 INFO L93 Difference]: Finished difference Result 5397 states and 19262 transitions. [2025-04-13 18:11:53,731 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:11:53,731 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:11:53,731 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:11:53,743 INFO L225 Difference]: With dead ends: 5397 [2025-04-13 18:11:53,743 INFO L226 Difference]: Without dead ends: 5386 [2025-04-13 18:11:53,744 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:11:53,744 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:11:53,744 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:11:53,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2025-04-13 18:11:57,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 4926. [2025-04-13 18:11:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4926 states, 4925 states have (on average 3.5711675126903555) internal successors, (17588), 4925 states have internal predecessors, (17588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:57,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4926 states to 4926 states and 17588 transitions. [2025-04-13 18:11:57,530 INFO L79 Accepts]: Start accepts. Automaton has 4926 states and 17588 transitions. Word has length 19 [2025-04-13 18:11:57,530 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:11:57,530 INFO L485 AbstractCegarLoop]: Abstraction has 4926 states and 17588 transitions. [2025-04-13 18:11:57,530 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:11:57,530 INFO L278 IsEmpty]: Start isEmpty. Operand 4926 states and 17588 transitions. [2025-04-13 18:11:57,537 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:11:57,538 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:11:57,538 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:11:57,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Ended with exit code 0 [2025-04-13 18:11:57,738 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,224 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:57,738 INFO L403 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:11:57,738 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:11:57,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2013579802, now seen corresponding path program 218 times [2025-04-13 18:11:57,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:11:57,739 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657518525] [2025-04-13 18:11:57,739 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:11:57,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:11:57,741 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:11:57,744 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:57,744 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:11:57,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:11:57,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:11:57,801 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657518525] [2025-04-13 18:11:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657518525] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:11:57,801 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320610504] [2025-04-13 18:11:57,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:11:57,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:11:57,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:11:57,803 INFO L229 MonitoredProcess]: Starting monitored process 225 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:11:57,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Waiting until timeout for monitored process [2025-04-13 18:11:57,834 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:11:57,849 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:11:57,849 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:11:57,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:11:57,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:11:57,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:11:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:11:57,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:11:57,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:11:57,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320610504] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:11:57,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:11:57,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2025-04-13 18:11:57,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463431578] [2025-04-13 18:11:57,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:11:57,932 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:11:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:11:57,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:11:57,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:11:57,933 INFO L87 Difference]: Start difference. First operand 4926 states and 17588 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:12:04,924 INFO L93 Difference]: Finished difference Result 5679 states and 20295 transitions. [2025-04-13 18:12:04,924 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:12:04,925 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:12:04,925 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:12:04,937 INFO L225 Difference]: With dead ends: 5679 [2025-04-13 18:12:04,937 INFO L226 Difference]: Without dead ends: 5664 [2025-04-13 18:12:04,938 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:12:04,938 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:12:04,938 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:12:04,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5664 states. [2025-04-13 18:12:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5664 to 4942. [2025-04-13 18:12:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 4941 states have (on average 3.5697227281926733) internal successors, (17638), 4941 states have internal predecessors, (17638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:08,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 17638 transitions. [2025-04-13 18:12:08,782 INFO L79 Accepts]: Start accepts. Automaton has 4942 states and 17638 transitions. Word has length 19 [2025-04-13 18:12:08,782 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:12:08,782 INFO L485 AbstractCegarLoop]: Abstraction has 4942 states and 17638 transitions. [2025-04-13 18:12:08,782 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:08,782 INFO L278 IsEmpty]: Start isEmpty. Operand 4942 states and 17638 transitions. [2025-04-13 18:12:08,789 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:12:08,789 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:12:08,789 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:12:08,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Forceful destruction successful, exit code 0 [2025-04-13 18:12:08,989 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,225 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:12:08,990 INFO L403 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:12:08,990 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:12:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash -524174806, now seen corresponding path program 219 times [2025-04-13 18:12:08,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:12:08,990 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014257343] [2025-04-13 18:12:08,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:12:08,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:12:08,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:12:08,999 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:12:08,999 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:12:08,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:12:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:09,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:12:09,057 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014257343] [2025-04-13 18:12:09,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014257343] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:12:09,057 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942796976] [2025-04-13 18:12:09,057 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:12:09,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:12:09,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:12:09,059 INFO L229 MonitoredProcess]: Starting monitored process 226 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:12:09,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Waiting until timeout for monitored process [2025-04-13 18:12:09,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:12:09,106 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:12:09,106 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:12:09,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:12:09,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:12:09,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:12:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:09,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:12:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:12:09,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942796976] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:12:09,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:12:09,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2025-04-13 18:12:09,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116410228] [2025-04-13 18:12:09,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:12:09,190 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:12:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:12:09,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:12:09,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:12:09,190 INFO L87 Difference]: Start difference. First operand 4942 states and 17638 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:12:16,457 INFO L93 Difference]: Finished difference Result 5881 states and 20974 transitions. [2025-04-13 18:12:16,457 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 18:12:16,457 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:12:16,457 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:12:16,472 INFO L225 Difference]: With dead ends: 5881 [2025-04-13 18:12:16,472 INFO L226 Difference]: Without dead ends: 5862 [2025-04-13 18:12:16,473 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:12:16,473 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:12:16,474 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:12:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5862 states. [2025-04-13 18:12:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5862 to 4948. [2025-04-13 18:12:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4947 states have (on average 3.5688295936931476) internal successors, (17655), 4947 states have internal predecessors, (17655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:20,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 17655 transitions. [2025-04-13 18:12:20,348 INFO L79 Accepts]: Start accepts. Automaton has 4948 states and 17655 transitions. Word has length 19 [2025-04-13 18:12:20,348 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:12:20,348 INFO L485 AbstractCegarLoop]: Abstraction has 4948 states and 17655 transitions. [2025-04-13 18:12:20,348 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:20,348 INFO L278 IsEmpty]: Start isEmpty. Operand 4948 states and 17655 transitions. [2025-04-13 18:12:20,355 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:12:20,355 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:12:20,356 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:12:20,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Forceful destruction successful, exit code 0 [2025-04-13 18:12:20,556 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,226 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:12:20,556 INFO L403 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:12:20,556 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:12:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1597260186, now seen corresponding path program 220 times [2025-04-13 18:12:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:12:20,556 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463644128] [2025-04-13 18:12:20,556 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:12:20,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:12:20,559 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:12:20,562 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:12:20,562 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:12:20,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:12:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:20,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:12:20,617 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463644128] [2025-04-13 18:12:20,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463644128] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:12:20,617 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798813123] [2025-04-13 18:12:20,617 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:12:20,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:12:20,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:12:20,619 INFO L229 MonitoredProcess]: Starting monitored process 227 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:12:20,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Waiting until timeout for monitored process [2025-04-13 18:12:20,651 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:12:20,667 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:12:20,667 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:12:20,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:12:20,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:12:20,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:12:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:20,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:12:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:20,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798813123] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:12:20,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:12:20,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-04-13 18:12:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283178437] [2025-04-13 18:12:20,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:12:20,748 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:12:20,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:12:20,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:12:20,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:12:20,749 INFO L87 Difference]: Start difference. First operand 4948 states and 17655 transitions. Second operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:12:27,963 INFO L93 Difference]: Finished difference Result 5711 states and 20205 transitions. [2025-04-13 18:12:27,963 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 18:12:27,963 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:12:27,963 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:12:27,977 INFO L225 Difference]: With dead ends: 5711 [2025-04-13 18:12:27,977 INFO L226 Difference]: Without dead ends: 5696 [2025-04-13 18:12:27,978 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:12:27,978 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:12:27,978 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:12:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2025-04-13 18:12:31,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 5000. [2025-04-13 18:12:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5000 states, 4999 states have (on average 3.5749149829965994) internal successors, (17871), 4999 states have internal predecessors, (17871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 17871 transitions. [2025-04-13 18:12:31,878 INFO L79 Accepts]: Start accepts. Automaton has 5000 states and 17871 transitions. Word has length 19 [2025-04-13 18:12:31,878 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:12:31,878 INFO L485 AbstractCegarLoop]: Abstraction has 5000 states and 17871 transitions. [2025-04-13 18:12:31,878 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:31,878 INFO L278 IsEmpty]: Start isEmpty. Operand 5000 states and 17871 transitions. [2025-04-13 18:12:31,885 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:12:31,885 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:12:31,885 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:12:31,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Ended with exit code 0 [2025-04-13 18:12:32,086 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2025-04-13 18:12:32,086 INFO L403 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:12:32,086 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:12:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1113715321, now seen corresponding path program 221 times [2025-04-13 18:12:32,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:12:32,086 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456733289] [2025-04-13 18:12:32,086 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:12:32,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:12:32,089 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:12:32,092 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:12:32,093 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:12:32,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:12:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:32,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:12:32,147 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456733289] [2025-04-13 18:12:32,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456733289] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:12:32,147 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808140971] [2025-04-13 18:12:32,147 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:12:32,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:12:32,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:12:32,149 INFO L229 MonitoredProcess]: Starting monitored process 228 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:12:32,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Waiting until timeout for monitored process [2025-04-13 18:12:32,179 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:12:32,194 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:12:32,195 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:12:32,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:12:32,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:12:32,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:12:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:32,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:12:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:32,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808140971] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:12:32,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:12:32,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-04-13 18:12:32,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578397512] [2025-04-13 18:12:32,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:12:32,281 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:12:32,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:12:32,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:12:32,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:12:32,282 INFO L87 Difference]: Start difference. First operand 5000 states and 17871 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:39,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:12:39,396 INFO L93 Difference]: Finished difference Result 5346 states and 18899 transitions. [2025-04-13 18:12:39,396 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-04-13 18:12:39,396 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:12:39,396 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:12:39,408 INFO L225 Difference]: With dead ends: 5346 [2025-04-13 18:12:39,408 INFO L226 Difference]: Without dead ends: 5338 [2025-04-13 18:12:39,409 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=576, Invalid=1404, Unknown=0, NotChecked=0, Total=1980 [2025-04-13 18:12:39,409 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:12:39,409 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 0 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:12:39,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2025-04-13 18:12:43,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5028. [2025-04-13 18:12:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 5027 states have (on average 3.5744977123532924) internal successors, (17969), 5027 states have internal predecessors, (17969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 17969 transitions. [2025-04-13 18:12:43,430 INFO L79 Accepts]: Start accepts. Automaton has 5028 states and 17969 transitions. Word has length 19 [2025-04-13 18:12:43,430 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:12:43,430 INFO L485 AbstractCegarLoop]: Abstraction has 5028 states and 17969 transitions. [2025-04-13 18:12:43,430 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:43,430 INFO L278 IsEmpty]: Start isEmpty. Operand 5028 states and 17969 transitions. [2025-04-13 18:12:43,439 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:12:43,439 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:12:43,439 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:12:43,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (228)] Ended with exit code 0 [2025-04-13 18:12:43,639 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2025-04-13 18:12:43,640 INFO L403 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:12:43,640 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:12:43,640 INFO L85 PathProgramCache]: Analyzing trace with hash -962843043, now seen corresponding path program 222 times [2025-04-13 18:12:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:12:43,640 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718657096] [2025-04-13 18:12:43,640 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:12:43,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:12:43,643 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:12:43,647 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:12:43,647 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:12:43,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:12:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:12:43,705 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718657096] [2025-04-13 18:12:43,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718657096] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:12:43,705 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143351495] [2025-04-13 18:12:43,705 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:12:43,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:12:43,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:12:43,707 INFO L229 MonitoredProcess]: Starting monitored process 229 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:12:43,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Waiting until timeout for monitored process [2025-04-13 18:12:43,736 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:12:43,752 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:12:43,752 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:12:43,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:12:43,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:12:43,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:12:43,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:43,797 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:12:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:43,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143351495] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:12:43,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:12:43,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:12:43,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314365136] [2025-04-13 18:12:43,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:12:43,833 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:12:43,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:12:43,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:12:43,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:12:43,833 INFO L87 Difference]: Start difference. First operand 5028 states and 17969 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:12:50,408 INFO L93 Difference]: Finished difference Result 5241 states and 18633 transitions. [2025-04-13 18:12:50,408 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:12:50,408 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:12:50,408 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:12:50,423 INFO L225 Difference]: With dead ends: 5241 [2025-04-13 18:12:50,423 INFO L226 Difference]: Without dead ends: 5230 [2025-04-13 18:12:50,424 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=385, Invalid=805, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:12:50,424 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:12:50,424 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:12:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2025-04-13 18:12:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 5038. [2025-04-13 18:12:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5038 states, 5037 states have (on average 3.5751439348818743) internal successors, (18008), 5037 states have internal predecessors, (18008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5038 states to 5038 states and 18008 transitions. [2025-04-13 18:12:54,347 INFO L79 Accepts]: Start accepts. Automaton has 5038 states and 18008 transitions. Word has length 19 [2025-04-13 18:12:54,347 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:12:54,347 INFO L485 AbstractCegarLoop]: Abstraction has 5038 states and 18008 transitions. [2025-04-13 18:12:54,347 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:12:54,347 INFO L278 IsEmpty]: Start isEmpty. Operand 5038 states and 18008 transitions. [2025-04-13 18:12:54,353 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:12:54,353 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:12:54,353 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:12:54,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (229)] Ended with exit code 0 [2025-04-13 18:12:54,553 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2025-04-13 18:12:54,554 INFO L403 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:12:54,554 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:12:54,554 INFO L85 PathProgramCache]: Analyzing trace with hash -189855966, now seen corresponding path program 223 times [2025-04-13 18:12:54,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:12:54,554 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174124881] [2025-04-13 18:12:54,554 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:12:54,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:12:54,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:12:54,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:12:54,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:12:54,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:12:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:54,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:12:54,618 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174124881] [2025-04-13 18:12:54,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174124881] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:12:54,618 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650709404] [2025-04-13 18:12:54,618 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:12:54,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:12:54,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:12:54,620 INFO L229 MonitoredProcess]: Starting monitored process 230 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:12:54,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Waiting until timeout for monitored process [2025-04-13 18:12:54,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-04-13 18:12:54,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:12:54,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:12:54,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:12:54,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:12:54,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:12:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:54,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:12:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:54,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650709404] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:12:54,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:12:54,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:12:54,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016981042] [2025-04-13 18:12:54,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:12:54,748 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:12:54,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:12:54,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:12:54,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:12:54,748 INFO L87 Difference]: Start difference. First operand 5038 states and 18008 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:03,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:13:03,627 INFO L93 Difference]: Finished difference Result 6046 states and 21353 transitions. [2025-04-13 18:13:03,627 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-04-13 18:13:03,627 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:13:03,627 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:13:03,641 INFO L225 Difference]: With dead ends: 6046 [2025-04-13 18:13:03,641 INFO L226 Difference]: Without dead ends: 6039 [2025-04-13 18:13:03,642 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=445, Invalid=1195, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:13:03,642 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:13:03,642 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 0 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:13:03,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2025-04-13 18:13:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 5078. [2025-04-13 18:13:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5078 states, 5077 states have (on average 3.577703368130786) internal successors, (18164), 5077 states have internal predecessors, (18164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 18164 transitions. [2025-04-13 18:13:07,722 INFO L79 Accepts]: Start accepts. Automaton has 5078 states and 18164 transitions. Word has length 19 [2025-04-13 18:13:07,722 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:13:07,722 INFO L485 AbstractCegarLoop]: Abstraction has 5078 states and 18164 transitions. [2025-04-13 18:13:07,723 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:07,723 INFO L278 IsEmpty]: Start isEmpty. Operand 5078 states and 18164 transitions. [2025-04-13 18:13:07,730 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:13:07,731 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:13:07,731 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:13:07,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (230)] Ended with exit code 0 [2025-04-13 18:13:07,931 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236,230 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:07,931 INFO L403 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:13:07,931 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:13:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1611009984, now seen corresponding path program 224 times [2025-04-13 18:13:07,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:13:07,932 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587767072] [2025-04-13 18:13:07,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:13:07,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:13:07,934 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:13:07,937 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:13:07,937 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:13:07,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:07,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:13:07,996 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587767072] [2025-04-13 18:13:07,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587767072] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:13:07,996 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006640808] [2025-04-13 18:13:07,996 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:13:07,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:07,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:13:07,998 INFO L229 MonitoredProcess]: Starting monitored process 231 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:13:07,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Waiting until timeout for monitored process [2025-04-13 18:13:08,029 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:13:08,047 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:13:08,047 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:13:08,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:08,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:13:08,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:13:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:08,094 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:13:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:08,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006640808] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:13:08,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:13:08,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:13:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368038902] [2025-04-13 18:13:08,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:13:08,126 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:13:08,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:13:08,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:13:08,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:13:08,126 INFO L87 Difference]: Start difference. First operand 5078 states and 18164 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:13:16,202 INFO L93 Difference]: Finished difference Result 5889 states and 20927 transitions. [2025-04-13 18:13:16,202 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:13:16,202 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:13:16,202 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:13:16,216 INFO L225 Difference]: With dead ends: 5889 [2025-04-13 18:13:16,216 INFO L226 Difference]: Without dead ends: 5880 [2025-04-13 18:13:16,217 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:13:16,217 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:13:16,217 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:13:16,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2025-04-13 18:13:20,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5068. [2025-04-13 18:13:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5068 states, 5067 states have (on average 3.5758831655812116) internal successors, (18119), 5067 states have internal predecessors, (18119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5068 states to 5068 states and 18119 transitions. [2025-04-13 18:13:20,201 INFO L79 Accepts]: Start accepts. Automaton has 5068 states and 18119 transitions. Word has length 19 [2025-04-13 18:13:20,201 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:13:20,202 INFO L485 AbstractCegarLoop]: Abstraction has 5068 states and 18119 transitions. [2025-04-13 18:13:20,202 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:20,202 INFO L278 IsEmpty]: Start isEmpty. Operand 5068 states and 18119 transitions. [2025-04-13 18:13:20,208 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:13:20,208 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:13:20,208 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:13:20,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (231)] Ended with exit code 0 [2025-04-13 18:13:20,409 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2025-04-13 18:13:20,409 INFO L403 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:13:20,409 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:13:20,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1822312219, now seen corresponding path program 225 times [2025-04-13 18:13:20,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:13:20,409 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52038474] [2025-04-13 18:13:20,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:13:20,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:13:20,412 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:13:20,417 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:13:20,417 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:13:20,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:20,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:13:20,501 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52038474] [2025-04-13 18:13:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52038474] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:13:20,501 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046774340] [2025-04-13 18:13:20,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:13:20,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:20,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:13:20,503 INFO L229 MonitoredProcess]: Starting monitored process 232 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:13:20,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Waiting until timeout for monitored process [2025-04-13 18:13:20,535 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:13:20,551 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:13:20,551 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:13:20,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:20,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:13:20,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:13:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:20,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:13:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:20,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046774340] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:13:20,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:13:20,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:13:20,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896011788] [2025-04-13 18:13:20,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:13:20,630 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:13:20,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:13:20,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:13:20,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:13:20,630 INFO L87 Difference]: Start difference. First operand 5068 states and 18119 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:27,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:13:27,525 INFO L93 Difference]: Finished difference Result 5442 states and 19330 transitions. [2025-04-13 18:13:27,525 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-04-13 18:13:27,525 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:13:27,525 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:13:27,538 INFO L225 Difference]: With dead ends: 5442 [2025-04-13 18:13:27,539 INFO L226 Difference]: Without dead ends: 5434 [2025-04-13 18:13:27,540 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=596, Invalid=1210, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:13:27,540 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 61 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:13:27,540 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 0 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:13:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2025-04-13 18:13:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 5104. [2025-04-13 18:13:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 3.5729962766999805) internal successors, (18233), 5103 states have internal predecessors, (18233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 18233 transitions. [2025-04-13 18:13:31,526 INFO L79 Accepts]: Start accepts. Automaton has 5104 states and 18233 transitions. Word has length 19 [2025-04-13 18:13:31,526 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:13:31,526 INFO L485 AbstractCegarLoop]: Abstraction has 5104 states and 18233 transitions. [2025-04-13 18:13:31,526 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:31,527 INFO L278 IsEmpty]: Start isEmpty. Operand 5104 states and 18233 transitions. [2025-04-13 18:13:31,533 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:13:31,533 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:13:31,533 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:13:31,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (232)] Ended with exit code 0 [2025-04-13 18:13:31,733 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2025-04-13 18:13:31,733 INFO L403 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:13:31,734 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:13:31,734 INFO L85 PathProgramCache]: Analyzing trace with hash -973344004, now seen corresponding path program 226 times [2025-04-13 18:13:31,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:13:31,734 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628651870] [2025-04-13 18:13:31,734 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:13:31,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:13:31,737 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:13:31,740 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:13:31,740 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:13:31,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:31,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:13:31,792 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628651870] [2025-04-13 18:13:31,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628651870] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:13:31,792 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076694465] [2025-04-13 18:13:31,792 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:13:31,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:31,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:13:31,794 INFO L229 MonitoredProcess]: Starting monitored process 233 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:13:31,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Waiting until timeout for monitored process [2025-04-13 18:13:31,823 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:13:31,838 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:13:31,838 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:13:31,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:31,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:13:31,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:13:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:31,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:13:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:31,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076694465] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:13:31,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:13:31,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2025-04-13 18:13:31,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219686269] [2025-04-13 18:13:31,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:13:31,904 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:13:31,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:13:31,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:13:31,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:13:31,905 INFO L87 Difference]: Start difference. First operand 5104 states and 18233 transitions. Second operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:13:40,135 INFO L93 Difference]: Finished difference Result 6223 states and 22164 transitions. [2025-04-13 18:13:40,136 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:13:40,136 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:13:40,136 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:13:40,150 INFO L225 Difference]: With dead ends: 6223 [2025-04-13 18:13:40,151 INFO L226 Difference]: Without dead ends: 6212 [2025-04-13 18:13:40,151 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:13:40,151 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:13:40,151 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:13:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6212 states. [2025-04-13 18:13:44,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6212 to 5104. [2025-04-13 18:13:44,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 3.5726043503821283) internal successors, (18231), 5103 states have internal predecessors, (18231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 18231 transitions. [2025-04-13 18:13:44,206 INFO L79 Accepts]: Start accepts. Automaton has 5104 states and 18231 transitions. Word has length 19 [2025-04-13 18:13:44,206 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:13:44,206 INFO L485 AbstractCegarLoop]: Abstraction has 5104 states and 18231 transitions. [2025-04-13 18:13:44,206 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:44,206 INFO L278 IsEmpty]: Start isEmpty. Operand 5104 states and 18231 transitions. [2025-04-13 18:13:44,213 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:13:44,213 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:13:44,213 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:13:44,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (233)] Ended with exit code 0 [2025-04-13 18:13:44,413 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2025-04-13 18:13:44,413 INFO L403 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:13:44,414 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:13:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1750493603, now seen corresponding path program 227 times [2025-04-13 18:13:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:13:44,414 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459793037] [2025-04-13 18:13:44,414 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:13:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:13:44,417 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:13:44,420 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:13:44,420 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:13:44,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:44,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:13:44,473 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459793037] [2025-04-13 18:13:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459793037] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:13:44,473 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119162770] [2025-04-13 18:13:44,473 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:13:44,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:44,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:13:44,475 INFO L229 MonitoredProcess]: Starting monitored process 234 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:13:44,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Waiting until timeout for monitored process [2025-04-13 18:13:44,505 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:13:44,520 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:13:44,520 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:13:44,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:44,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:13:44,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:13:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:44,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:13:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:44,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119162770] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:13:44,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:13:44,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2025-04-13 18:13:44,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867226313] [2025-04-13 18:13:44,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:13:44,590 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:13:44,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:13:44,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:13:44,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:13:44,590 INFO L87 Difference]: Start difference. First operand 5104 states and 18231 transitions. Second operand has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:13:51,875 INFO L93 Difference]: Finished difference Result 5516 states and 19517 transitions. [2025-04-13 18:13:51,875 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 18:13:51,875 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:13:51,875 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:13:51,888 INFO L225 Difference]: With dead ends: 5516 [2025-04-13 18:13:51,888 INFO L226 Difference]: Without dead ends: 5508 [2025-04-13 18:13:51,889 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=473, Invalid=933, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:13:51,889 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:13:51,889 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:13:51,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2025-04-13 18:13:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 5170. [2025-04-13 18:13:55,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5170 states, 5169 states have (on average 3.571290384987425) internal successors, (18460), 5169 states have internal predecessors, (18460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5170 states to 5170 states and 18460 transitions. [2025-04-13 18:13:56,003 INFO L79 Accepts]: Start accepts. Automaton has 5170 states and 18460 transitions. Word has length 19 [2025-04-13 18:13:56,003 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:13:56,003 INFO L485 AbstractCegarLoop]: Abstraction has 5170 states and 18460 transitions. [2025-04-13 18:13:56,003 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:56,003 INFO L278 IsEmpty]: Start isEmpty. Operand 5170 states and 18460 transitions. [2025-04-13 18:13:56,009 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:13:56,009 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:13:56,009 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:13:56,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (234)] Ended with exit code 0 [2025-04-13 18:13:56,210 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,234 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:56,210 INFO L403 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:13:56,210 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:13:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash 516060992, now seen corresponding path program 228 times [2025-04-13 18:13:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:13:56,210 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306936474] [2025-04-13 18:13:56,210 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:13:56,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:13:56,213 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:13:56,217 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:13:56,217 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:13:56,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:56,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:13:56,274 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306936474] [2025-04-13 18:13:56,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306936474] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:13:56,274 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035434395] [2025-04-13 18:13:56,274 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:13:56,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:56,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:13:56,276 INFO L229 MonitoredProcess]: Starting monitored process 235 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:13:56,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Waiting until timeout for monitored process [2025-04-13 18:13:56,306 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:13:56,321 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:13:56,321 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:13:56,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:56,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:13:56,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:13:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:56,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:13:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:56,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035434395] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:13:56,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:13:56,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-04-13 18:13:56,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613258015] [2025-04-13 18:13:56,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:13:56,400 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:13:56,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:13:56,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:13:56,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:13:56,400 INFO L87 Difference]: Start difference. First operand 5170 states and 18460 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2025-04-13 18:13:58,723 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 18:13:58,724 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:13:58,724 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:13:58,724 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:13:58,725 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 18:13:58,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Forceful destruction successful, exit code 0 [2025-04-13 18:13:58,744 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:13:58,745 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (235)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:13:58,925 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,235 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:58,925 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (5170states) and FLOYD_HOARE automaton (currently 21 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1531 states constructed, input type IntersectNwa). [2025-04-13 18:13:58,927 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 18:13:58,927 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 18:13:58,929 INFO L422 BasicCegarLoop]: Path program histogram: [228, 6, 6, 2] [2025-04-13 18:13:58,931 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 18:13:58,931 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 18:13:58,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 06:13:58 BasicIcfg [2025-04-13 18:13:58,932 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 18:13:58,932 INFO L158 Benchmark]: Toolchain (without parser) took 888835.15ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 100.0MB in the beginning and 409.7MB in the end (delta: -309.7MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2025-04-13 18:13:58,932 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:13:58,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.60ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 85.4MB in the end (delta: 14.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 18:13:58,932 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.68ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 83.3MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 18:13:58,932 INFO L158 Benchmark]: Boogie Preprocessor took 37.10ms. Allocated memory is still 142.6MB. Free memory was 83.3MB in the beginning and 81.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:13:58,932 INFO L158 Benchmark]: RCFGBuilder took 651.92ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 83.6MB in the end (delta: -2.3MB). Peak memory consumption was 64.8MB. Max. memory is 8.0GB. [2025-04-13 18:13:58,932 INFO L158 Benchmark]: TraceAbstraction took 887912.70ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 82.9MB in the beginning and 409.7MB in the end (delta: -326.9MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2025-04-13 18:13:58,933 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.60ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 85.4MB in the end (delta: 14.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.68ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 83.3MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.10ms. Allocated memory is still 142.6MB. Free memory was 83.3MB in the beginning and 81.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 651.92ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 83.6MB in the end (delta: -2.3MB). Peak memory consumption was 64.8MB. Max. memory is 8.0GB. * TraceAbstraction took 887912.70ms. Allocated memory was 142.6MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 82.9MB in the beginning and 409.7MB in the end (delta: -326.9MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (5170states) and FLOYD_HOARE automaton (currently 21 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1531 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (5170states) and FLOYD_HOARE automaton (currently 21 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1531 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (5170states) and FLOYD_HOARE automaton (currently 21 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1531 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 24 locations, 27 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 887.8s, OverallIterations: 242, TraceHistogramMax: 4, PathProgramHistogramMax: 228, EmptinessCheckTime: 0.6s, AutomataDifference: 520.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12148 SdHoareTripleChecker+Valid, 31.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12148 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 26.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2773 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87344 IncrementalHoareTripleChecker+Invalid, 90117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2773 mSolverCounterUnsat, 0 mSDtfsCounter, 87344 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12220 GetRequests, 5160 SyntacticMatches, 1196 SemanticMatches, 5864 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54781 ImplicationChecksByTransitivity, 34.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5170occurred in iteration=241, InterpolantAutomatonStates: 4975, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 263.9s AutomataMinimizationTime, 241 MinimizatonAttempts, 49100 StatesRemovedByMinimization, 238 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.1s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 42.0s InterpolantComputationTime, 8254 NumberOfCodeBlocks, 8254 NumberOfCodeBlocksAsserted, 1097 NumberOfCheckSat, 11620 ConstructedInterpolants, 0 QuantifiedInterpolants, 60333 SizeOfPredicates, 676 NumberOfNonLiveVariables, 47492 ConjunctsInSsa, 3442 ConjunctsInUnsatCore, 710 InterpolantComputations, 8 PerfectInterpolantSequences, 2613/7956 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown