/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/clever.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 17:58:49,303 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 17:58:49,345 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 17:58:49,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 17:58:49,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 17:58:49,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 17:58:49,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 17:58:49,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 17:58:49,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 17:58:49,371 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 17:58:49,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 17:58:49,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 17:58:49,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 17:58:49,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 17:58:49,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 17:58:49,373 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 17:58:49,373 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:58:49,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:58:49,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 17:58:49,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 17:58:49,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 17:58:49,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 17:58:49,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 17:58:49,375 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 17:58:49,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 17:58:49,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 17:58:49,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 17:58:49,590 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 17:58:49,592 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 17:58:49,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/clever.wvr.c [2025-04-13 17:58:50,914 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a695c2d/545da1f6d49d4c97be5df01698ef778f/FLAG01fda56c4 [2025-04-13 17:58:51,113 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 17:58:51,114 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c [2025-04-13 17:58:51,122 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a695c2d/545da1f6d49d4c97be5df01698ef778f/FLAG01fda56c4 [2025-04-13 17:58:51,965 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58a695c2d/545da1f6d49d4c97be5df01698ef778f [2025-04-13 17:58:51,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 17:58:51,968 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 17:58:51,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 17:58:51,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 17:58:51,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 17:58:51,974 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:58:51" (1/1) ... [2025-04-13 17:58:51,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414d6345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:51, skipping insertion in model container [2025-04-13 17:58:51,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:58:51" (1/1) ... [2025-04-13 17:58:51,984 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 17:58:52,148 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/clever.wvr.c[2159,2172] [2025-04-13 17:58:52,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:58:52,161 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 17:58:52,187 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/clever.wvr.c[2159,2172] [2025-04-13 17:58:52,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:58:52,200 INFO L204 MainTranslator]: Completed translation [2025-04-13 17:58:52,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52 WrapperNode [2025-04-13 17:58:52,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 17:58:52,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 17:58:52,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 17:58:52,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 17:58:52,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,232 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2025-04-13 17:58:52,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 17:58:52,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 17:58:52,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 17:58:52,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 17:58:52,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,247 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,260 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 17:58:52,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,265 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 17:58:52,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 17:58:52,277 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 17:58:52,277 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 17:58:52,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (1/1) ... [2025-04-13 17:58:52,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:58:52,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:52,306 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 17:58:52,309 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 17:58:52,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 17:58:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 17:58:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 17:58:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 17:58:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 17:58:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 17:58:52,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 17:58:52,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 17:58:52,330 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 17:58:52,389 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 17:58:52,390 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 17:58:52,528 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 17:58:52,529 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 17:58:52,529 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 17:58:52,689 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 17:58:52,696 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 17:58:52,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:58:52 BoogieIcfgContainer [2025-04-13 17:58:52,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 17:58:52,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 17:58:52,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 17:58:52,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 17:58:52,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 05:58:51" (1/3) ... [2025-04-13 17:58:52,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732ace99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:58:52, skipping insertion in model container [2025-04-13 17:58:52,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:58:52" (2/3) ... [2025-04-13 17:58:52,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732ace99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:58:52, skipping insertion in model container [2025-04-13 17:58:52,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:58:52" (3/3) ... [2025-04-13 17:58:52,703 INFO L128 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2025-04-13 17:58:52,714 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 17:58:52,715 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG clever.wvr.c that has 3 procedures, 16 locations, 16 edges, 1 initial locations, 3 loop locations, and 1 error locations. [2025-04-13 17:58:52,715 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 17:58:52,742 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 17:58:52,765 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 18 transitions, 50 flow [2025-04-13 17:58:52,776 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 31 states, 30 states have (on average 2.5) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:58:52,796 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:58:52,805 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;@5a9aef8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:58:52,805 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 17:58:52,806 INFO L278 IsEmpty]: Start isEmpty. Operand has 31 states, 30 states have (on average 2.5) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:58:52,810 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 17:58:52,810 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:52,811 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:52,812 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 17:58:52,816 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash -261600647, now seen corresponding path program 1 times [2025-04-13 17:58:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:52,821 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704006378] [2025-04-13 17:58:52,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:58:52,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:52,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 17:58:52,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 17:58:52,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:58:52,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:53,119 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 17:58:53,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:53,119 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704006378] [2025-04-13 17:58:53,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704006378] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:58:53,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:58:53,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 17:58:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116341477] [2025-04-13 17:58:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:58:53,125 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 17:58:53,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:53,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 17:58:53,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 17:58:53,140 INFO L87 Difference]: Start difference. First operand has 31 states, 30 states have (on average 2.5) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:58:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:53,202 INFO L93 Difference]: Finished difference Result 56 states and 135 transitions. [2025-04-13 17:58:53,202 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 17:58:53,203 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-04-13 17:58:53,203 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:53,209 INFO L225 Difference]: With dead ends: 56 [2025-04-13 17:58:53,209 INFO L226 Difference]: Without dead ends: 51 [2025-04-13 17:58:53,211 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 17:58:53,214 INFO L437 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:53,215 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:58:53,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-04-13 17:58:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-04-13 17:58:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 2.48) internal successors, (124), 50 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:58:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 124 transitions. [2025-04-13 17:58:53,242 INFO L79 Accepts]: Start accepts. Automaton has 51 states and 124 transitions. Word has length 11 [2025-04-13 17:58:53,242 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:53,242 INFO L485 AbstractCegarLoop]: Abstraction has 51 states and 124 transitions. [2025-04-13 17:58:53,242 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:58:53,242 INFO L278 IsEmpty]: Start isEmpty. Operand 51 states and 124 transitions. [2025-04-13 17:58:53,243 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 17:58:53,243 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:53,243 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:53,243 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 17:58:53,243 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 17:58:53,244 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash 481059338, now seen corresponding path program 1 times [2025-04-13 17:58:53,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:53,245 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164840444] [2025-04-13 17:58:53,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:58:53,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:53,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-13 17:58:53,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 17:58:53,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:58:53,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:53,328 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 17:58:53,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:53,328 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164840444] [2025-04-13 17:58:53,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164840444] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:58:53,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:58:53,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 17:58:53,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982818249] [2025-04-13 17:58:53,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:58:53,329 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 17:58:53,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:53,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 17:58:53,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 17:58:53,330 INFO L87 Difference]: Start difference. First operand 51 states and 124 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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 17:58:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:53,410 INFO L93 Difference]: Finished difference Result 79 states and 174 transitions. [2025-04-13 17:58:53,411 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:58:53,411 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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 17:58:53,411 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:53,412 INFO L225 Difference]: With dead ends: 79 [2025-04-13 17:58:53,412 INFO L226 Difference]: Without dead ends: 63 [2025-04-13 17:58:53,412 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:58:53,412 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:53,413 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 4 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:58:53,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-04-13 17:58:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2025-04-13 17:58:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.3207547169811322) internal successors, (123), 53 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:58:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 123 transitions. [2025-04-13 17:58:53,420 INFO L79 Accepts]: Start accepts. Automaton has 54 states and 123 transitions. Word has length 12 [2025-04-13 17:58:53,420 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:53,420 INFO L485 AbstractCegarLoop]: Abstraction has 54 states and 123 transitions. [2025-04-13 17:58:53,421 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 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 17:58:53,422 INFO L278 IsEmpty]: Start isEmpty. Operand 54 states and 123 transitions. [2025-04-13 17:58:53,424 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-13 17:58:53,424 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:53,424 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:53,424 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 17:58:53,424 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 17:58:53,424 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -125503950, now seen corresponding path program 2 times [2025-04-13 17:58:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:53,425 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331849315] [2025-04-13 17:58:53,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:58:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:53,434 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-04-13 17:58:53,442 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 17:58:53,442 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:58:53,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:53,520 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 17:58:53,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:53,520 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331849315] [2025-04-13 17:58:53,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331849315] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:53,520 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797217853] [2025-04-13 17:58:53,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:58:53,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:53,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:53,524 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 17:58:53,525 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 17:58:53,563 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-04-13 17:58:53,577 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-04-13 17:58:53,577 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:58:53,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:53,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-13 17:58:53,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:53,647 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 17:58:53,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:53,670 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 17:58:53,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797217853] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:53,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:53,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-04-13 17:58:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612179934] [2025-04-13 17:58:53,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:53,671 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 17:58:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:53,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 17:58:53,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-13 17:58:53,671 INFO L87 Difference]: Start difference. First operand 54 states and 123 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 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 17:58:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:53,766 INFO L93 Difference]: Finished difference Result 69 states and 154 transitions. [2025-04-13 17:58:53,766 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:58:53,766 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 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 12 [2025-04-13 17:58:53,766 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:53,767 INFO L225 Difference]: With dead ends: 69 [2025-04-13 17:58:53,767 INFO L226 Difference]: Without dead ends: 57 [2025-04-13 17:58:53,767 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2025-04-13 17:58:53,768 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:53,768 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 8 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:58:53,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-04-13 17:58:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2025-04-13 17:58:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 2.24) internal successors, (112), 50 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:58:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 112 transitions. [2025-04-13 17:58:53,780 INFO L79 Accepts]: Start accepts. Automaton has 51 states and 112 transitions. Word has length 12 [2025-04-13 17:58:53,780 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:53,780 INFO L485 AbstractCegarLoop]: Abstraction has 51 states and 112 transitions. [2025-04-13 17:58:53,780 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 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 17:58:53,780 INFO L278 IsEmpty]: Start isEmpty. Operand 51 states and 112 transitions. [2025-04-13 17:58:53,780 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:58:53,782 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:53,782 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:53,788 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 17:58:53,982 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:53,983 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 17:58:53,983 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:53,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1019687118, now seen corresponding path program 1 times [2025-04-13 17:58:53,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:53,984 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494897806] [2025-04-13 17:58:53,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:58:53,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:53,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 17:58:54,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:58:54,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:58:54,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:54,255 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 17:58:54,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:54,255 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494897806] [2025-04-13 17:58:54,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494897806] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:54,255 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627854192] [2025-04-13 17:58:54,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:58:54,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:54,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:54,257 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 17:58:54,259 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 17:58:54,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 17:58:54,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:58:54,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:58:54,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:54,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 17:58:54,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:54,432 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 17:58:54,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:54,512 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 17:58:54,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627854192] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:54,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:54,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-04-13 17:58:54,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000131917] [2025-04-13 17:58:54,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:54,512 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:58:54,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:54,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:58:54,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:58:54,513 INFO L87 Difference]: Start difference. First operand 51 states and 112 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 17:58:54,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:54,699 INFO L93 Difference]: Finished difference Result 91 states and 192 transitions. [2025-04-13 17:58:54,700 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 17:58:54,700 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 13 [2025-04-13 17:58:54,700 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:54,701 INFO L225 Difference]: With dead ends: 91 [2025-04-13 17:58:54,701 INFO L226 Difference]: Without dead ends: 71 [2025-04-13 17:58:54,701 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2025-04-13 17:58:54,701 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 58 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:54,702 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 17 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:58:54,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-04-13 17:58:54,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2025-04-13 17:58:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.3442622950819674) internal successors, (143), 61 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:58:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 143 transitions. [2025-04-13 17:58:54,716 INFO L79 Accepts]: Start accepts. Automaton has 62 states and 143 transitions. Word has length 13 [2025-04-13 17:58:54,717 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:54,717 INFO L485 AbstractCegarLoop]: Abstraction has 62 states and 143 transitions. [2025-04-13 17:58:54,717 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 17:58:54,717 INFO L278 IsEmpty]: Start isEmpty. Operand 62 states and 143 transitions. [2025-04-13 17:58:54,717 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:58:54,717 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:54,717 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:54,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-13 17:58:54,922 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,SelfDestructingSolverStorable3 [2025-04-13 17:58:54,922 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 17:58:54,922 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash -826654725, now seen corresponding path program 1 times [2025-04-13 17:58:54,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:54,923 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340278452] [2025-04-13 17:58:54,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:58:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:54,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-13 17:58:54,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:58:54,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:58:54,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:58:54,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:54,962 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340278452] [2025-04-13 17:58:54,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340278452] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:58:54,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:58:54,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 17:58:54,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886218867] [2025-04-13 17:58:54,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:58:54,963 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 17:58:54,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:54,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 17:58:54,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 17:58:54,963 INFO L87 Difference]: Start difference. First operand 62 states and 143 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 17:58:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:58:55,011 INFO L93 Difference]: Finished difference Result 86 states and 195 transitions. [2025-04-13 17:58:55,011 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 17:58:55,012 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 17:58:55,012 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:58:55,013 INFO L225 Difference]: With dead ends: 86 [2025-04-13 17:58:55,013 INFO L226 Difference]: Without dead ends: 79 [2025-04-13 17:58:55,013 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:58:55,013 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:58:55,014 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:58:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-04-13 17:58:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2025-04-13 17:58:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.3823529411764706) internal successors, (162), 68 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:58:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 162 transitions. [2025-04-13 17:58:55,028 INFO L79 Accepts]: Start accepts. Automaton has 69 states and 162 transitions. Word has length 13 [2025-04-13 17:58:55,028 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:58:55,028 INFO L485 AbstractCegarLoop]: Abstraction has 69 states and 162 transitions. [2025-04-13 17:58:55,030 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 17:58:55,030 INFO L278 IsEmpty]: Start isEmpty. Operand 69 states and 162 transitions. [2025-04-13 17:58:55,030 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:58:55,030 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:58:55,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:58:55,031 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 17:58:55,031 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 17:58:55,031 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:58:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2073465482, now seen corresponding path program 2 times [2025-04-13 17:58:55,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:58:55,031 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593526267] [2025-04-13 17:58:55,031 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:58:55,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:58:55,036 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:58:55,042 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:58:55,043 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:58:55,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:55,233 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 17:58:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:58:55,233 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593526267] [2025-04-13 17:58:55,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593526267] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:58:55,233 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676236341] [2025-04-13 17:58:55,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:58:55,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:58:55,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:58:55,235 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 17:58:55,237 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 17:58:55,268 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:58:55,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:58:55,282 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:58:55,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:58:55,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 17:58:55,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:58:55,423 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 17:58:55,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:58:59,546 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 17:58:59,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676236341] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:58:59,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:58:59,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-04-13 17:58:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558131737] [2025-04-13 17:58:59,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:58:59,547 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:58:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:58:59,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:58:59,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=102, Unknown=1, NotChecked=0, Total=156 [2025-04-13 17:58:59,547 INFO L87 Difference]: Start difference. First operand 69 states and 162 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 17:59:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:00,006 INFO L93 Difference]: Finished difference Result 160 states and 346 transitions. [2025-04-13 17:59:00,006 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 17:59:00,007 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 13 [2025-04-13 17:59:00,007 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:00,008 INFO L225 Difference]: With dead ends: 160 [2025-04-13 17:59:00,008 INFO L226 Difference]: Without dead ends: 134 [2025-04-13 17:59:00,008 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=136, Invalid=283, Unknown=1, NotChecked=0, Total=420 [2025-04-13 17:59:00,009 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 66 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:00,009 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 10 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:59:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2025-04-13 17:59:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 77. [2025-04-13 17:59:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 2.5) internal successors, (190), 76 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2025-04-13 17:59:00,022 INFO L79 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 13 [2025-04-13 17:59:00,022 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:00,022 INFO L485 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2025-04-13 17:59:00,022 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 17:59:00,022 INFO L278 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2025-04-13 17:59:00,023 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:00,023 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:00,023 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:00,030 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 17:59:00,227 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:00,227 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 17:59:00,227 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:00,227 INFO L85 PathProgramCache]: Analyzing trace with hash -513903119, now seen corresponding path program 2 times [2025-04-13 17:59:00,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:00,227 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614230950] [2025-04-13 17:59:00,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:00,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:00,231 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:00,233 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 13 statements. [2025-04-13 17:59:00,234 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 17:59:00,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 17:59:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:00,256 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614230950] [2025-04-13 17:59:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614230950] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:59:00,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:59:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 17:59:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989827092] [2025-04-13 17:59:00,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:59:00,256 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 17:59:00,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:00,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 17:59:00,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 17:59:00,257 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 17:59:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:00,319 INFO L93 Difference]: Finished difference Result 97 states and 219 transitions. [2025-04-13 17:59:00,319 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 17:59:00,320 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 17:59:00,320 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:00,320 INFO L225 Difference]: With dead ends: 97 [2025-04-13 17:59:00,320 INFO L226 Difference]: Without dead ends: 86 [2025-04-13 17:59:00,320 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:59:00,321 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:00,321 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:59:00,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-04-13 17:59:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2025-04-13 17:59:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 2.5) internal successors, (185), 74 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 185 transitions. [2025-04-13 17:59:00,337 INFO L79 Accepts]: Start accepts. Automaton has 75 states and 185 transitions. Word has length 13 [2025-04-13 17:59:00,337 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:00,337 INFO L485 AbstractCegarLoop]: Abstraction has 75 states and 185 transitions. [2025-04-13 17:59:00,337 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 17:59:00,337 INFO L278 IsEmpty]: Start isEmpty. Operand 75 states and 185 transitions. [2025-04-13 17:59:00,338 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-13 17:59:00,338 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:00,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:00,338 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-13 17:59:00,338 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 17:59:00,338 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:00,338 INFO L85 PathProgramCache]: Analyzing trace with hash 372766414, now seen corresponding path program 3 times [2025-04-13 17:59:00,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:00,338 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084565898] [2025-04-13 17:59:00,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:00,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:00,345 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:00,352 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:00,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:00,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:00,538 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 17:59:00,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:00,538 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084565898] [2025-04-13 17:59:00,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084565898] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:00,538 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541767552] [2025-04-13 17:59:00,538 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:00,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:00,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:00,540 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 17:59:00,543 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 17:59:00,578 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 2 equivalence classes. [2025-04-13 17:59:00,590 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-04-13 17:59:00,591 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:00,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:00,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-13 17:59:00,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:00,737 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 17:59:00,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:00,860 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 17:59:00,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541767552] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:00,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:00,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-04-13 17:59:00,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195813669] [2025-04-13 17:59:00,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:00,861 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 17:59:00,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:00,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 17:59:00,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2025-04-13 17:59:00,862 INFO L87 Difference]: Start difference. First operand 75 states and 185 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 17:59:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:01,142 INFO L93 Difference]: Finished difference Result 125 states and 293 transitions. [2025-04-13 17:59:01,142 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 17:59:01,142 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 13 [2025-04-13 17:59:01,143 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:01,143 INFO L225 Difference]: With dead ends: 125 [2025-04-13 17:59:01,143 INFO L226 Difference]: Without dead ends: 107 [2025-04-13 17:59:01,144 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=218, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:01,144 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 46 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:01,144 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 12 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 17:59:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-04-13 17:59:01,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 74. [2025-04-13 17:59:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.4383561643835616) internal successors, (178), 73 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 178 transitions. [2025-04-13 17:59:01,153 INFO L79 Accepts]: Start accepts. Automaton has 74 states and 178 transitions. Word has length 13 [2025-04-13 17:59:01,153 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:01,153 INFO L485 AbstractCegarLoop]: Abstraction has 74 states and 178 transitions. [2025-04-13 17:59:01,153 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 17:59:01,153 INFO L278 IsEmpty]: Start isEmpty. Operand 74 states and 178 transitions. [2025-04-13 17:59:01,153 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:01,154 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:01,154 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:01,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-13 17:59:01,358 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:01,358 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 17:59:01,358 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash 177592731, now seen corresponding path program 1 times [2025-04-13 17:59:01,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:01,359 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374986450] [2025-04-13 17:59:01,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:59:01,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:01,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:01,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:01,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:01,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:01,661 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 17:59:01,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:01,661 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374986450] [2025-04-13 17:59:01,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374986450] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:01,661 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621424341] [2025-04-13 17:59:01,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:59:01,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:01,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:01,665 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 17:59:01,667 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 17:59:01,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:01,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:01,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:01,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:01,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 17:59:01,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:02,129 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 17:59:02,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:02,447 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 17:59:02,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621424341] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:02,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:02,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2025-04-13 17:59:02,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945267600] [2025-04-13 17:59:02,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:02,447 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:59:02,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:02,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:59:02,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:02,448 INFO L87 Difference]: Start difference. First operand 74 states and 178 transitions. Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:03,167 INFO L93 Difference]: Finished difference Result 140 states and 307 transitions. [2025-04-13 17:59:03,168 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 17:59:03,168 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 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 15 [2025-04-13 17:59:03,168 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:03,169 INFO L225 Difference]: With dead ends: 140 [2025-04-13 17:59:03,169 INFO L226 Difference]: Without dead ends: 113 [2025-04-13 17:59:03,169 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:59:03,170 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 100 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:03,170 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 27 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 17:59:03,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-04-13 17:59:03,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 81. [2025-04-13 17:59:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 2.6) internal successors, (208), 80 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 208 transitions. [2025-04-13 17:59:03,187 INFO L79 Accepts]: Start accepts. Automaton has 81 states and 208 transitions. Word has length 15 [2025-04-13 17:59:03,187 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:03,187 INFO L485 AbstractCegarLoop]: Abstraction has 81 states and 208 transitions. [2025-04-13 17:59:03,187 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:03,187 INFO L278 IsEmpty]: Start isEmpty. Operand 81 states and 208 transitions. [2025-04-13 17:59:03,187 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:03,187 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:03,188 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:03,195 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 17:59:03,393 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:03,393 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 17:59:03,393 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:03,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1224429554, now seen corresponding path program 2 times [2025-04-13 17:59:03,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:03,393 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326233879] [2025-04-13 17:59:03,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:03,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:03,397 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:03,409 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:03,409 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:03,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:03,717 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 17:59:03,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:03,717 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326233879] [2025-04-13 17:59:03,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326233879] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:03,717 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784802916] [2025-04-13 17:59:03,717 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:59:03,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:03,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:03,720 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 17:59:03,721 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 17:59:03,746 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:03,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:03,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:03,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:03,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 17:59:03,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:10,891 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 17:59:10,892 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:11,702 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 17:59:11,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784802916] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:11,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:11,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-04-13 17:59:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940555598] [2025-04-13 17:59:11,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:11,703 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:59:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:11,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:59:11,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=339, Unknown=1, NotChecked=0, Total=420 [2025-04-13 17:59:11,704 INFO L87 Difference]: Start difference. First operand 81 states and 208 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:17,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:17,183 INFO L93 Difference]: Finished difference Result 141 states and 333 transitions. [2025-04-13 17:59:17,184 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 17:59:17,184 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 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 15 [2025-04-13 17:59:17,184 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:17,185 INFO L225 Difference]: With dead ends: 141 [2025-04-13 17:59:17,185 INFO L226 Difference]: Without dead ends: 132 [2025-04-13 17:59:17,185 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=116, Invalid=533, Unknown=1, NotChecked=0, Total=650 [2025-04-13 17:59:17,186 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 77 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:17,186 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 49 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 17:59:17,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-04-13 17:59:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2025-04-13 17:59:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.641509433962264) internal successors, (280), 106 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 280 transitions. [2025-04-13 17:59:17,206 INFO L79 Accepts]: Start accepts. Automaton has 107 states and 280 transitions. Word has length 15 [2025-04-13 17:59:17,206 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:17,206 INFO L485 AbstractCegarLoop]: Abstraction has 107 states and 280 transitions. [2025-04-13 17:59:17,206 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:17,206 INFO L278 IsEmpty]: Start isEmpty. Operand 107 states and 280 transitions. [2025-04-13 17:59:17,206 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:17,206 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:17,206 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:17,213 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 17:59:17,409 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:17,410 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 17:59:17,410 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:17,410 INFO L85 PathProgramCache]: Analyzing trace with hash -22614858, now seen corresponding path program 3 times [2025-04-13 17:59:17,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:17,410 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230907509] [2025-04-13 17:59:17,410 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:17,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:17,418 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:17,430 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:17,430 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:17,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:17,718 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 17:59:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:17,718 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230907509] [2025-04-13 17:59:17,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230907509] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:17,719 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128808974] [2025-04-13 17:59:17,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:59:17,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:17,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:17,720 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 17:59:17,721 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 17:59:17,746 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:17,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:17,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 17:59:17,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:17,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 17:59:17,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:18,697 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 17:59:18,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:19,315 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 17:59:19,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128808974] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:19,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:19,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-04-13 17:59:19,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964147953] [2025-04-13 17:59:19,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:19,316 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:59:19,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:19,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:59:19,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:59:19,317 INFO L87 Difference]: Start difference. First operand 107 states and 280 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 17:59:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:20,538 INFO L93 Difference]: Finished difference Result 170 states and 387 transitions. [2025-04-13 17:59:20,538 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-04-13 17:59:20,539 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 15 [2025-04-13 17:59:20,539 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:20,539 INFO L225 Difference]: With dead ends: 170 [2025-04-13 17:59:20,539 INFO L226 Difference]: Without dead ends: 161 [2025-04-13 17:59:20,540 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2025-04-13 17:59:20,540 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 91 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:20,540 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 27 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 17:59:20,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-04-13 17:59:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 111. [2025-04-13 17:59:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.709090909090909) internal successors, (298), 110 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 298 transitions. [2025-04-13 17:59:20,564 INFO L79 Accepts]: Start accepts. Automaton has 111 states and 298 transitions. Word has length 15 [2025-04-13 17:59:20,565 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:20,565 INFO L485 AbstractCegarLoop]: Abstraction has 111 states and 298 transitions. [2025-04-13 17:59:20,565 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 17:59:20,565 INFO L278 IsEmpty]: Start isEmpty. Operand 111 states and 298 transitions. [2025-04-13 17:59:20,565 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:20,565 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:20,565 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:20,571 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 17:59:20,765 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:20,766 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 17:59:20,766 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:20,766 INFO L85 PathProgramCache]: Analyzing trace with hash -19933668, now seen corresponding path program 4 times [2025-04-13 17:59:20,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:20,766 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115058376] [2025-04-13 17:59:20,766 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:20,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:20,770 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:20,777 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 17:59:20,778 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:20,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:21,080 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 17:59:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:21,080 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115058376] [2025-04-13 17:59:21,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115058376] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:21,080 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540789708] [2025-04-13 17:59:21,080 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:59:21,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:21,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:21,082 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 17:59:21,084 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 17:59:21,111 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:21,147 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 17:59:21,147 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:59:21,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:21,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 17:59:21,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:27,313 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 17:59:27,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:27,931 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 17:59:27,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540789708] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:27,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:27,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-04-13 17:59:27,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847838759] [2025-04-13 17:59:27,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:27,931 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 17:59:27,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:27,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 17:59:27,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=324, Unknown=1, NotChecked=0, Total=420 [2025-04-13 17:59:27,932 INFO L87 Difference]: Start difference. First operand 111 states and 298 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:36,962 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-13 17:59:41,565 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-13 17:59:45,767 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-13 17:59:47,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:47,005 INFO L93 Difference]: Finished difference Result 160 states and 373 transitions. [2025-04-13 17:59:47,005 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 17:59:47,006 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 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 15 [2025-04-13 17:59:47,006 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:47,007 INFO L225 Difference]: With dead ends: 160 [2025-04-13 17:59:47,007 INFO L226 Difference]: Without dead ends: 151 [2025-04-13 17:59:47,007 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=164, Invalid=647, Unknown=1, NotChecked=0, Total=812 [2025-04-13 17:59:47,007 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 83 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:47,007 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 37 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 452 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2025-04-13 17:59:47,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-04-13 17:59:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 109. [2025-04-13 17:59:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.675925925925926) internal successors, (289), 108 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 289 transitions. [2025-04-13 17:59:47,031 INFO L79 Accepts]: Start accepts. Automaton has 109 states and 289 transitions. Word has length 15 [2025-04-13 17:59:47,031 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:47,031 INFO L485 AbstractCegarLoop]: Abstraction has 109 states and 289 transitions. [2025-04-13 17:59:47,031 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:47,031 INFO L278 IsEmpty]: Start isEmpty. Operand 109 states and 289 transitions. [2025-04-13 17:59:47,032 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:47,032 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:47,032 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:47,039 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 17:59:47,232 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,SelfDestructingSolverStorable11 [2025-04-13 17:59:47,232 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 17:59:47,233 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1220857357, now seen corresponding path program 5 times [2025-04-13 17:59:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:47,233 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88895149] [2025-04-13 17:59:47,233 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:47,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:47,236 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:47,241 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:47,241 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:47,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:47,460 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 17:59:47,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:47,460 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88895149] [2025-04-13 17:59:47,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88895149] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:47,460 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671131716] [2025-04-13 17:59:47,460 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:59:47,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:47,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:47,463 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 17:59:47,464 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 17:59:47,493 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:47,524 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:47,524 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 17:59:47,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:47,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 17:59:47,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:47,851 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 17:59:47,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:48,125 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 17:59:48,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671131716] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:48,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:48,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2025-04-13 17:59:48,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507689999] [2025-04-13 17:59:48,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:48,126 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 17:59:48,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:48,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 17:59:48,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2025-04-13 17:59:48,127 INFO L87 Difference]: Start difference. First operand 109 states and 289 transitions. Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:49,402 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2025-04-13 17:59:49,402 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 17:59:49,402 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 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 15 [2025-04-13 17:59:49,402 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:49,403 INFO L225 Difference]: With dead ends: 208 [2025-04-13 17:59:49,403 INFO L226 Difference]: Without dead ends: 183 [2025-04-13 17:59:49,404 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2025-04-13 17:59:49,404 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 84 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:49,404 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 27 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 17:59:49,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-04-13 17:59:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 117. [2025-04-13 17:59:49,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 2.7844827586206895) internal successors, (323), 116 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 323 transitions. [2025-04-13 17:59:49,430 INFO L79 Accepts]: Start accepts. Automaton has 117 states and 323 transitions. Word has length 15 [2025-04-13 17:59:49,430 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:49,430 INFO L485 AbstractCegarLoop]: Abstraction has 117 states and 323 transitions. [2025-04-13 17:59:49,430 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:49,430 INFO L278 IsEmpty]: Start isEmpty. Operand 117 states and 323 transitions. [2025-04-13 17:59:49,430 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:49,430 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:49,430 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:49,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:49,631 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,SelfDestructingSolverStorable12 [2025-04-13 17:59:49,631 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 17:59:49,631 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1195922290, now seen corresponding path program 6 times [2025-04-13 17:59:49,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:49,631 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180745101] [2025-04-13 17:59:49,631 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:49,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:49,635 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:49,642 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:49,642 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:49,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:49,887 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 17:59:49,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:49,887 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180745101] [2025-04-13 17:59:49,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180745101] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:49,887 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037841526] [2025-04-13 17:59:49,887 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:59:49,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:49,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:49,891 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 17:59:49,892 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 17:59:49,916 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-04-13 17:59:49,933 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:49,933 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 17:59:49,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:49,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 17:59:49,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:50,898 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 17:59:50,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:51,475 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 17:59:51,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037841526] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:51,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:51,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-04-13 17:59:51,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159185172] [2025-04-13 17:59:51,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:51,475 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:59:51,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:51,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:59:51,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:59:51,476 INFO L87 Difference]: Start difference. First operand 117 states and 323 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 17:59:52,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:59:52,743 INFO L93 Difference]: Finished difference Result 206 states and 483 transitions. [2025-04-13 17:59:52,743 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 17:59:52,743 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 15 [2025-04-13 17:59:52,743 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:59:52,744 INFO L225 Difference]: With dead ends: 206 [2025-04-13 17:59:52,744 INFO L226 Difference]: Without dead ends: 197 [2025-04-13 17:59:52,744 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2025-04-13 17:59:52,745 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 113 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 17:59:52,745 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 29 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 17:59:52,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2025-04-13 17:59:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 118. [2025-04-13 17:59:52,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.8461538461538463) internal successors, (333), 117 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:59:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 333 transitions. [2025-04-13 17:59:52,779 INFO L79 Accepts]: Start accepts. Automaton has 118 states and 333 transitions. Word has length 15 [2025-04-13 17:59:52,779 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:59:52,779 INFO L485 AbstractCegarLoop]: Abstraction has 118 states and 333 transitions. [2025-04-13 17:59:52,779 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 17:59:52,779 INFO L278 IsEmpty]: Start isEmpty. Operand 118 states and 333 transitions. [2025-04-13 17:59:52,779 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 17:59:52,779 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:59:52,780 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:59:52,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-04-13 17:59:52,980 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,SelfDestructingSolverStorable13 [2025-04-13 17:59:52,980 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 17:59:52,981 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:59:52,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1193241100, now seen corresponding path program 7 times [2025-04-13 17:59:52,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:59:52,981 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523829292] [2025-04-13 17:59:52,981 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:52,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:59:52,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:52,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:52,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:52,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:53,181 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 17:59:53,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:59:53,181 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523829292] [2025-04-13 17:59:53,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523829292] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 17:59:53,181 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264919031] [2025-04-13 17:59:53,181 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 17:59:53,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 17:59:53,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:59:53,184 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 17:59:53,186 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 17:59:53,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 17:59:53,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 17:59:53,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:59:53,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:59:53,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 17:59:53,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 17:59:53,784 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 17:59:53,784 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 17:59:54,554 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 17:59:54,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264919031] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 17:59:54,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 17:59:54,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-04-13 17:59:54,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029850744] [2025-04-13 17:59:54,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 17:59:54,554 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 17:59:54,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:59:54,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 17:59:54,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-04-13 17:59:54,555 INFO L87 Difference]: Start difference. First operand 118 states and 333 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 18:00:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:00,555 INFO L93 Difference]: Finished difference Result 221 states and 508 transitions. [2025-04-13 18:00:00,555 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:00:00,555 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 15 [2025-04-13 18:00:00,555 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:00,556 INFO L225 Difference]: With dead ends: 221 [2025-04-13 18:00:00,557 INFO L226 Difference]: Without dead ends: 208 [2025-04-13 18:00:00,558 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:00:00,558 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 120 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:00,558 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 29 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:00:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-04-13 18:00:00,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 116. [2025-04-13 18:00:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.8173913043478263) internal successors, (324), 115 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:00,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 324 transitions. [2025-04-13 18:00:00,589 INFO L79 Accepts]: Start accepts. Automaton has 116 states and 324 transitions. Word has length 15 [2025-04-13 18:00:00,589 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:00,589 INFO L485 AbstractCegarLoop]: Abstraction has 116 states and 324 transitions. [2025-04-13 18:00:00,589 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 18:00:00,590 INFO L278 IsEmpty]: Start isEmpty. Operand 116 states and 324 transitions. [2025-04-13 18:00:00,590 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:00:00,590 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:00,590 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:00,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-04-13 18:00:00,790 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-04-13 18:00:00,790 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 18:00:00,791 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:00,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1110034837, now seen corresponding path program 8 times [2025-04-13 18:00:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:00,791 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493325849] [2025-04-13 18:00:00,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:00,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:00,794 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:00:00,801 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:00,802 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:00,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:00,971 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 18:00:00,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:00,971 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493325849] [2025-04-13 18:00:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493325849] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:00,971 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49099084] [2025-04-13 18:00:00,971 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:00,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:00,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:00,973 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 18:00:00,975 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 18:00:00,999 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:00:01,031 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:01,031 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:01,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:01,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:00:01,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:01,389 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 18:00:01,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:01,671 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 18:00:01,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49099084] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:01,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:01,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2025-04-13 18:00:01,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118691804] [2025-04-13 18:00:01,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:01,672 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:00:01,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:01,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:00:01,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:01,673 INFO L87 Difference]: Start difference. First operand 116 states and 324 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:11,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:11,044 INFO L93 Difference]: Finished difference Result 280 states and 699 transitions. [2025-04-13 18:00:11,044 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:00:11,044 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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 15 [2025-04-13 18:00:11,044 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:11,046 INFO L225 Difference]: With dead ends: 280 [2025-04-13 18:00:11,046 INFO L226 Difference]: Without dead ends: 267 [2025-04-13 18:00:11,046 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:00:11,047 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 81 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:11,047 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 18 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:00:11,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2025-04-13 18:00:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 122. [2025-04-13 18:00:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.9173553719008263) internal successors, (353), 121 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 353 transitions. [2025-04-13 18:00:11,100 INFO L79 Accepts]: Start accepts. Automaton has 122 states and 353 transitions. Word has length 15 [2025-04-13 18:00:11,100 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:11,100 INFO L485 AbstractCegarLoop]: Abstraction has 122 states and 353 transitions. [2025-04-13 18:00:11,101 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:11,101 INFO L278 IsEmpty]: Start isEmpty. Operand 122 states and 353 transitions. [2025-04-13 18:00:11,101 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:00:11,101 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:11,101 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:11,108 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 18:00:11,302 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-04-13 18:00:11,302 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 18:00:11,302 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:11,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1061317915, now seen corresponding path program 9 times [2025-04-13 18:00:11,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:11,302 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785340140] [2025-04-13 18:00:11,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:11,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:11,305 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:00:11,339 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:11,339 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:00:11,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:11,845 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 18:00:11,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:11,845 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785340140] [2025-04-13 18:00:11,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785340140] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:11,845 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180780355] [2025-04-13 18:00:11,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:11,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:11,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:11,851 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 18:00:11,862 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 18:00:11,915 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:00:11,959 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:11,959 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:00:11,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:11,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:00:11,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:12,526 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 18:00:12,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:13,039 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 18:00:13,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180780355] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:13,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:13,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2025-04-13 18:00:13,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040689468] [2025-04-13 18:00:13,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:13,040 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:00:13,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:13,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:00:13,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:13,041 INFO L87 Difference]: Start difference. First operand 122 states and 353 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:13,850 INFO L93 Difference]: Finished difference Result 209 states and 538 transitions. [2025-04-13 18:00:13,850 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:00:13,850 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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 15 [2025-04-13 18:00:13,850 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:13,851 INFO L225 Difference]: With dead ends: 209 [2025-04-13 18:00:13,852 INFO L226 Difference]: Without dead ends: 184 [2025-04-13 18:00:13,853 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:00:13,853 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 52 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:13,854 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 13 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:00:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2025-04-13 18:00:13,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 132. [2025-04-13 18:00:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 3.0229007633587788) internal successors, (396), 131 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 396 transitions. [2025-04-13 18:00:13,930 INFO L79 Accepts]: Start accepts. Automaton has 132 states and 396 transitions. Word has length 15 [2025-04-13 18:00:13,930 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:13,930 INFO L485 AbstractCegarLoop]: Abstraction has 132 states and 396 transitions. [2025-04-13 18:00:13,930 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:13,930 INFO L278 IsEmpty]: Start isEmpty. Operand 132 states and 396 transitions. [2025-04-13 18:00:13,931 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:00:13,931 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:13,931 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:13,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-04-13 18:00:14,131 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,SelfDestructingSolverStorable16 [2025-04-13 18:00:14,131 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 18:00:14,132 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:14,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1086252982, now seen corresponding path program 10 times [2025-04-13 18:00:14,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:14,132 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067299843] [2025-04-13 18:00:14,133 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:14,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:14,138 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:00:14,168 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 18:00:14,168 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:14,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:14,774 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 18:00:14,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:14,774 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067299843] [2025-04-13 18:00:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067299843] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:14,774 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964190103] [2025-04-13 18:00:14,774 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:00:14,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:14,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:14,781 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 18:00:14,794 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 18:00:14,828 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:00:14,859 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 18:00:14,860 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:00:14,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:14,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:00:14,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:15,783 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 18:00:15,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:17,368 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 18:00:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964190103] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:17,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:17,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2025-04-13 18:00:17,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946324020] [2025-04-13 18:00:17,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:17,368 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:00:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:17,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:00:17,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:00:17,369 INFO L87 Difference]: Start difference. First operand 132 states and 396 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:19,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:19,672 INFO L93 Difference]: Finished difference Result 223 states and 564 transitions. [2025-04-13 18:00:19,672 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:00:19,673 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 18:00:19,673 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:19,674 INFO L225 Difference]: With dead ends: 223 [2025-04-13 18:00:19,674 INFO L226 Difference]: Without dead ends: 214 [2025-04-13 18:00:19,674 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:00:19,675 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 85 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:19,675 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 26 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 18:00:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-04-13 18:00:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 142. [2025-04-13 18:00:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.099290780141844) internal successors, (437), 141 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:19,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 437 transitions. [2025-04-13 18:00:19,742 INFO L79 Accepts]: Start accepts. Automaton has 142 states and 437 transitions. Word has length 15 [2025-04-13 18:00:19,742 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:19,742 INFO L485 AbstractCegarLoop]: Abstraction has 142 states and 437 transitions. [2025-04-13 18:00:19,742 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:19,742 INFO L278 IsEmpty]: Start isEmpty. Operand 142 states and 437 transitions. [2025-04-13 18:00:19,744 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:00:19,744 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:19,744 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:19,750 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 18:00:19,949 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:19,949 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 18:00:19,949 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:19,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1088934172, now seen corresponding path program 11 times [2025-04-13 18:00:19,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:19,952 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192545838] [2025-04-13 18:00:19,952 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:19,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:19,960 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 3 equivalence classes. [2025-04-13 18:00:19,971 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:19,971 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:19,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:20,346 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 18:00:20,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:20,346 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192545838] [2025-04-13 18:00:20,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192545838] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:20,346 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280336415] [2025-04-13 18:00:20,346 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:00:20,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:20,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:20,353 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 18:00:20,365 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 18:00:20,411 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 3 equivalence classes. [2025-04-13 18:00:20,435 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:20,436 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:00:20,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:20,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:00:20,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:21,707 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 18:00:21,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:22,767 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 18:00:22,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280336415] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:22,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:22,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2025-04-13 18:00:22,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909858874] [2025-04-13 18:00:22,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:22,768 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:00:22,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:22,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:00:22,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:00:22,769 INFO L87 Difference]: Start difference. First operand 142 states and 437 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:25,674 INFO L93 Difference]: Finished difference Result 232 states and 585 transitions. [2025-04-13 18:00:25,674 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:00:25,674 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 18:00:25,675 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:25,678 INFO L225 Difference]: With dead ends: 232 [2025-04-13 18:00:25,678 INFO L226 Difference]: Without dead ends: 215 [2025-04-13 18:00:25,679 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:00:25,679 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 134 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:25,680 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 21 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 18:00:25,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-04-13 18:00:25,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 142. [2025-04-13 18:00:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.099290780141844) internal successors, (437), 141 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:25,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 437 transitions. [2025-04-13 18:00:25,760 INFO L79 Accepts]: Start accepts. Automaton has 142 states and 437 transitions. Word has length 15 [2025-04-13 18:00:25,760 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:25,760 INFO L485 AbstractCegarLoop]: Abstraction has 142 states and 437 transitions. [2025-04-13 18:00:25,760 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:25,761 INFO L278 IsEmpty]: Start isEmpty. Operand 142 states and 437 transitions. [2025-04-13 18:00:25,761 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:00:25,761 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:25,761 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:25,768 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 18:00:25,962 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:25,962 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 18:00:25,962 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:25,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1172140435, now seen corresponding path program 12 times [2025-04-13 18:00:25,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:25,962 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550363935] [2025-04-13 18:00:25,962 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:25,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:25,967 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 3 equivalence classes. [2025-04-13 18:00:25,978 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:25,978 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:25,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:26,386 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 18:00:26,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:26,386 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550363935] [2025-04-13 18:00:26,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550363935] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:26,386 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681231537] [2025-04-13 18:00:26,387 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:00:26,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:26,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:26,389 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 18:00:26,394 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 18:00:26,438 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 3 equivalence classes. [2025-04-13 18:00:26,492 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:26,492 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:00:26,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:26,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:00:26,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:27,013 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 18:00:27,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:27,802 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 18:00:27,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681231537] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:27,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:27,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2025-04-13 18:00:27,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083879305] [2025-04-13 18:00:27,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:27,806 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:00:27,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:27,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:00:27,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:00:27,810 INFO L87 Difference]: Start difference. First operand 142 states and 437 transitions. Second operand has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:30,857 INFO L93 Difference]: Finished difference Result 325 states and 868 transitions. [2025-04-13 18:00:30,857 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 18:00:30,857 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 15 [2025-04-13 18:00:30,857 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:30,867 INFO L225 Difference]: With dead ends: 325 [2025-04-13 18:00:30,867 INFO L226 Difference]: Without dead ends: 312 [2025-04-13 18:00:30,867 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:00:30,869 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 111 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:30,869 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 21 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-13 18:00:30,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2025-04-13 18:00:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 166. [2025-04-13 18:00:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 3.290909090909091) internal successors, (543), 165 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 543 transitions. [2025-04-13 18:00:30,959 INFO L79 Accepts]: Start accepts. Automaton has 166 states and 543 transitions. Word has length 15 [2025-04-13 18:00:30,959 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:30,959 INFO L485 AbstractCegarLoop]: Abstraction has 166 states and 543 transitions. [2025-04-13 18:00:30,960 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:30,960 INFO L278 IsEmpty]: Start isEmpty. Operand 166 states and 543 transitions. [2025-04-13 18:00:30,960 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:00:30,960 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:30,960 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:30,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-04-13 18:00:31,164 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:31,165 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 18:00:31,165 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:31,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1432872804, now seen corresponding path program 13 times [2025-04-13 18:00:31,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:31,165 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380948455] [2025-04-13 18:00:31,165 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:31,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:31,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 18:00:31,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:31,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:31,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:31,491 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 18:00:31,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:31,491 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380948455] [2025-04-13 18:00:31,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380948455] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:31,491 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037788684] [2025-04-13 18:00:31,491 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:00:31,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:31,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:31,494 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:00:31,495 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 18:00:31,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 18:00:31,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:31,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:00:31,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:31,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:00:31,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:31,973 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 18:00:31,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:32,744 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 18:00:32,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037788684] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:32,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:32,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-04-13 18:00:32,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352133877] [2025-04-13 18:00:32,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:32,745 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:00:32,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:32,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:00:32,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:00:32,745 INFO L87 Difference]: Start difference. First operand 166 states and 543 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:34,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:34,077 INFO L93 Difference]: Finished difference Result 203 states and 603 transitions. [2025-04-13 18:00:34,077 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:00:34,078 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 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 15 [2025-04-13 18:00:34,078 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:34,079 INFO L225 Difference]: With dead ends: 203 [2025-04-13 18:00:34,079 INFO L226 Difference]: Without dead ends: 194 [2025-04-13 18:00:34,079 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:00:34,079 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 49 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:34,080 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 22 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:00:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-04-13 18:00:34,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 172. [2025-04-13 18:00:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 3.2280701754385963) internal successors, (552), 171 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 552 transitions. [2025-04-13 18:00:34,222 INFO L79 Accepts]: Start accepts. Automaton has 172 states and 552 transitions. Word has length 15 [2025-04-13 18:00:34,222 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:34,222 INFO L485 AbstractCegarLoop]: Abstraction has 172 states and 552 transitions. [2025-04-13 18:00:34,222 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:34,223 INFO L278 IsEmpty]: Start isEmpty. Operand 172 states and 552 transitions. [2025-04-13 18:00:34,228 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:00:34,228 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:34,228 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:34,235 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 18:00:34,428 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:34,429 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 18:00:34,429 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:34,429 INFO L85 PathProgramCache]: Analyzing trace with hash -546203271, now seen corresponding path program 14 times [2025-04-13 18:00:34,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:34,429 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587755124] [2025-04-13 18:00:34,429 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:34,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:34,432 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:00:34,440 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:34,441 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:34,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:34,854 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 18:00:34,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:34,854 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587755124] [2025-04-13 18:00:34,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587755124] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:34,854 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429291146] [2025-04-13 18:00:34,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:00:34,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:34,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:34,856 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 18:00:34,866 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 18:00:34,911 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:00:34,966 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:34,966 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:00:34,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:34,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:00:34,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:35,391 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 18:00:35,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:00:35,742 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 18:00:35,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429291146] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:00:35,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:00:35,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2025-04-13 18:00:35,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344401164] [2025-04-13 18:00:35,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:00:35,743 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:00:35,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:00:35,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:00:35,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:00:35,744 INFO L87 Difference]: Start difference. First operand 172 states and 552 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:40,599 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-13 18:00:45,109 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-13 18:00:45,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:00:45,467 INFO L93 Difference]: Finished difference Result 267 states and 759 transitions. [2025-04-13 18:00:45,468 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:00:45,468 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 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 15 [2025-04-13 18:00:45,468 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:00:45,469 INFO L225 Difference]: With dead ends: 267 [2025-04-13 18:00:45,469 INFO L226 Difference]: Without dead ends: 238 [2025-04-13 18:00:45,469 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:00:45,470 INFO L437 NwaCegarLoop]: 1 mSDtfsCounter, 60 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:00:45,470 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 8 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 303 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2025-04-13 18:00:45,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-04-13 18:00:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 176. [2025-04-13 18:00:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 3.222857142857143) internal successors, (564), 175 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 564 transitions. [2025-04-13 18:00:45,562 INFO L79 Accepts]: Start accepts. Automaton has 176 states and 564 transitions. Word has length 15 [2025-04-13 18:00:45,562 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:00:45,562 INFO L485 AbstractCegarLoop]: Abstraction has 176 states and 564 transitions. [2025-04-13 18:00:45,562 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:00:45,562 INFO L278 IsEmpty]: Start isEmpty. Operand 176 states and 564 transitions. [2025-04-13 18:00:45,563 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:00:45,563 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:00:45,563 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:00:45,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-04-13 18:00:45,763 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:45,763 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 18:00:45,764 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:00:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1726973170, now seen corresponding path program 15 times [2025-04-13 18:00:45,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:00:45,764 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159626823] [2025-04-13 18:00:45,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:45,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:00:45,766 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:00:45,771 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:45,771 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:00:45,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:46,057 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 18:00:46,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:00:46,057 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159626823] [2025-04-13 18:00:46,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159626823] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:00:46,057 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968873112] [2025-04-13 18:00:46,057 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:00:46,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:00:46,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:00:46,059 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 18:00:46,060 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 18:00:46,084 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:00:46,105 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:00:46,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:00:46,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:00:46,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:00:46,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:00:47,014 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 18:00:47,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:15,061 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 18:01:15,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968873112] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:15,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:15,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-04-13 18:01:15,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775775216] [2025-04-13 18:01:15,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:15,063 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:15,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:15,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:15,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=303, Unknown=3, NotChecked=0, Total=380 [2025-04-13 18:01:15,064 INFO L87 Difference]: Start difference. First operand 176 states and 564 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 18:01:17,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:17,978 INFO L93 Difference]: Finished difference Result 241 states and 684 transitions. [2025-04-13 18:01:17,978 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 18:01:17,978 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 15 [2025-04-13 18:01:17,981 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:17,982 INFO L225 Difference]: With dead ends: 241 [2025-04-13 18:01:17,982 INFO L226 Difference]: Without dead ends: 232 [2025-04-13 18:01:17,984 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=174, Invalid=693, Unknown=3, NotChecked=0, Total=870 [2025-04-13 18:01:17,989 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 94 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:17,989 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 24 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 18:01:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2025-04-13 18:01:18,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 182. [2025-04-13 18:01:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 3.265193370165746) internal successors, (591), 181 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 18:01:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 591 transitions. [2025-04-13 18:01:18,097 INFO L79 Accepts]: Start accepts. Automaton has 182 states and 591 transitions. Word has length 15 [2025-04-13 18:01:18,097 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:18,097 INFO L485 AbstractCegarLoop]: Abstraction has 182 states and 591 transitions. [2025-04-13 18:01:18,097 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 18:01:18,098 INFO L278 IsEmpty]: Start isEmpty. Operand 182 states and 591 transitions. [2025-04-13 18:01:18,098 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:01:18,098 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:18,098 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:18,106 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 18:01:18,302 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:18,302 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 18:01:18,303 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1724291980, now seen corresponding path program 16 times [2025-04-13 18:01:18,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:18,303 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007991171] [2025-04-13 18:01:18,303 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:18,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:18,310 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:01:18,315 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 18:01:18,320 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:18,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:19,102 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 18:01:19,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:19,102 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007991171] [2025-04-13 18:01:19,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007991171] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:19,102 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328513760] [2025-04-13 18:01:19,103 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:19,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:19,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:19,109 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 18:01:19,110 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 18:01:19,158 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:01:19,208 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 18:01:19,208 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:19,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:19,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:01:19,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:20,395 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 18:01:20,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:21,849 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 18:01:21,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328513760] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:21,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:21,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-04-13 18:01:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570980017] [2025-04-13 18:01:21,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:21,851 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:21,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:21,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:21,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:21,854 INFO L87 Difference]: Start difference. First operand 182 states and 591 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 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 18:01:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:25,361 INFO L93 Difference]: Finished difference Result 255 states and 705 transitions. [2025-04-13 18:01:25,362 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:01:25,362 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 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 15 [2025-04-13 18:01:25,362 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:25,363 INFO L225 Difference]: With dead ends: 255 [2025-04-13 18:01:25,363 INFO L226 Difference]: Without dead ends: 242 [2025-04-13 18:01:25,364 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:01:25,364 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 85 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:25,364 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 23 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-04-13 18:01:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2025-04-13 18:01:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 180. [2025-04-13 18:01:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 3.2513966480446927) internal successors, (582), 179 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:25,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 582 transitions. [2025-04-13 18:01:25,478 INFO L79 Accepts]: Start accepts. Automaton has 180 states and 582 transitions. Word has length 15 [2025-04-13 18:01:25,478 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:25,482 INFO L485 AbstractCegarLoop]: Abstraction has 180 states and 582 transitions. [2025-04-13 18:01:25,482 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 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 18:01:25,483 INFO L278 IsEmpty]: Start isEmpty. Operand 180 states and 582 transitions. [2025-04-13 18:01:25,483 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:01:25,483 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:25,483 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:25,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-04-13 18:01:25,684 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,SelfDestructingSolverStorable23 [2025-04-13 18:01:25,685 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 18:01:25,685 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash 48868340, now seen corresponding path program 17 times [2025-04-13 18:01:25,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:25,685 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606721792] [2025-04-13 18:01:25,685 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:25,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:25,688 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:01:25,703 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:01:25,703 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:25,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:26,220 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 18:01:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:26,220 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606721792] [2025-04-13 18:01:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606721792] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:26,220 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389537885] [2025-04-13 18:01:26,220 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:26,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:26,227 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 18:01:26,228 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 18:01:26,270 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-04-13 18:01:26,302 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:01:26,303 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:26,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:26,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:01:26,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:27,533 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 18:01:27,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:29,002 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 18:01:29,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389537885] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:29,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:29,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-04-13 18:01:29,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979895269] [2025-04-13 18:01:29,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:29,003 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:29,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:29,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:29,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:29,004 INFO L87 Difference]: Start difference. First operand 180 states and 582 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 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 18:01:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:31,027 INFO L93 Difference]: Finished difference Result 240 states and 679 transitions. [2025-04-13 18:01:31,027 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-13 18:01:31,028 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 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 15 [2025-04-13 18:01:31,028 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:31,030 INFO L225 Difference]: With dead ends: 240 [2025-04-13 18:01:31,030 INFO L226 Difference]: Without dead ends: 209 [2025-04-13 18:01:31,034 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:01:31,034 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 75 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:31,034 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 20 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 18:01:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-04-13 18:01:31,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 182. [2025-04-13 18:01:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 3.2099447513812156) internal successors, (581), 181 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 581 transitions. [2025-04-13 18:01:31,163 INFO L79 Accepts]: Start accepts. Automaton has 182 states and 581 transitions. Word has length 15 [2025-04-13 18:01:31,163 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:31,163 INFO L485 AbstractCegarLoop]: Abstraction has 182 states and 581 transitions. [2025-04-13 18:01:31,163 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 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 18:01:31,163 INFO L278 IsEmpty]: Start isEmpty. Operand 182 states and 581 transitions. [2025-04-13 18:01:31,164 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:01:31,164 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:31,164 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:31,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-04-13 18:01:31,364 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,SelfDestructingSolverStorable24 [2025-04-13 18:01:31,365 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 18:01:31,365 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash 698134293, now seen corresponding path program 18 times [2025-04-13 18:01:31,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:31,369 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976583382] [2025-04-13 18:01:31,369 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:31,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:31,375 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:01:31,378 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:31,378 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:01:31,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:31,631 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 18:01:31,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:31,631 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976583382] [2025-04-13 18:01:31,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976583382] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:31,631 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442851785] [2025-04-13 18:01:31,632 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:31,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:31,637 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 18:01:31,647 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 18:01:31,694 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:01:31,718 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:31,718 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:01:31,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:31,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:01:31,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:32,257 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 18:01:32,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:32,540 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 18:01:32,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442851785] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:32,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:32,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-04-13 18:01:32,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630752899] [2025-04-13 18:01:32,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:32,542 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-13 18:01:32,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:32,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-13 18:01:32,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2025-04-13 18:01:32,543 INFO L87 Difference]: Start difference. First operand 182 states and 581 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:33,566 INFO L93 Difference]: Finished difference Result 249 states and 705 transitions. [2025-04-13 18:01:33,566 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:01:33,566 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:01:33,566 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:33,568 INFO L225 Difference]: With dead ends: 249 [2025-04-13 18:01:33,568 INFO L226 Difference]: Without dead ends: 244 [2025-04-13 18:01:33,568 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:01:33,569 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 131 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:33,569 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 42 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:01:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2025-04-13 18:01:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 203. [2025-04-13 18:01:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 3.0643564356435644) internal successors, (619), 202 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 619 transitions. [2025-04-13 18:01:33,696 INFO L79 Accepts]: Start accepts. Automaton has 203 states and 619 transitions. Word has length 16 [2025-04-13 18:01:33,696 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:33,696 INFO L485 AbstractCegarLoop]: Abstraction has 203 states and 619 transitions. [2025-04-13 18:01:33,696 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:33,696 INFO L278 IsEmpty]: Start isEmpty. Operand 203 states and 619 transitions. [2025-04-13 18:01:33,697 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:01:33,697 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:33,697 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:33,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-04-13 18:01:33,897 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-04-13 18:01:33,898 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 18:01:33,898 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:33,898 INFO L85 PathProgramCache]: Analyzing trace with hash -700315795, now seen corresponding path program 19 times [2025-04-13 18:01:33,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:33,898 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905660763] [2025-04-13 18:01:33,898 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:33,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:33,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:01:33,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:33,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:33,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:34,041 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 18:01:34,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:34,041 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905660763] [2025-04-13 18:01:34,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905660763] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:34,041 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867283100] [2025-04-13 18:01:34,041 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:34,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:34,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:34,043 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 18:01:34,044 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 18:01:34,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:01:34,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:34,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:34,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:34,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:01:34,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:34,532 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 18:01:34,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:34,843 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 18:01:34,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867283100] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:34,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:34,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:01:34,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761127353] [2025-04-13 18:01:34,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:34,844 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:34,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:34,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:34,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:34,845 INFO L87 Difference]: Start difference. First operand 203 states and 619 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:36,541 INFO L93 Difference]: Finished difference Result 332 states and 864 transitions. [2025-04-13 18:01:36,541 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 18:01:36,542 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:01:36,542 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:36,543 INFO L225 Difference]: With dead ends: 332 [2025-04-13 18:01:36,543 INFO L226 Difference]: Without dead ends: 327 [2025-04-13 18:01:36,544 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=331, Invalid=1831, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:01:36,544 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 171 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:36,544 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 44 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:01:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2025-04-13 18:01:36,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 203. [2025-04-13 18:01:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 3.0643564356435644) internal successors, (619), 202 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 619 transitions. [2025-04-13 18:01:36,664 INFO L79 Accepts]: Start accepts. Automaton has 203 states and 619 transitions. Word has length 16 [2025-04-13 18:01:36,664 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:36,664 INFO L485 AbstractCegarLoop]: Abstraction has 203 states and 619 transitions. [2025-04-13 18:01:36,664 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:36,664 INFO L278 IsEmpty]: Start isEmpty. Operand 203 states and 619 transitions. [2025-04-13 18:01:36,665 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:01:36,665 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:36,665 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:36,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-04-13 18:01:36,865 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:36,866 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 18:01:36,866 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:36,866 INFO L85 PathProgramCache]: Analyzing trace with hash -589493275, now seen corresponding path program 20 times [2025-04-13 18:01:36,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:36,866 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870640370] [2025-04-13 18:01:36,866 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:36,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:36,869 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:01:36,872 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:36,873 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:36,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:37,011 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 18:01:37,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:37,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870640370] [2025-04-13 18:01:37,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870640370] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:37,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942361234] [2025-04-13 18:01:37,012 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:37,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:37,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:37,014 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 18:01:37,015 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 18:01:37,037 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:01:37,046 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:37,046 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:37,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:37,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:01:37,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:37,509 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 18:01:37,509 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:37,818 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 18:01:37,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942361234] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:37,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:37,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:01:37,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032919315] [2025-04-13 18:01:37,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:37,818 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:37,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:37,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:37,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:37,819 INFO L87 Difference]: Start difference. First operand 203 states and 619 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:39,619 INFO L93 Difference]: Finished difference Result 359 states and 944 transitions. [2025-04-13 18:01:39,620 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-04-13 18:01:39,620 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:01:39,620 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:39,622 INFO L225 Difference]: With dead ends: 359 [2025-04-13 18:01:39,622 INFO L226 Difference]: Without dead ends: 354 [2025-04-13 18:01:39,622 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=355, Invalid=1715, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 18:01:39,622 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 165 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:39,623 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 47 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:01:39,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2025-04-13 18:01:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 219. [2025-04-13 18:01:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.169724770642202) internal successors, (691), 218 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 691 transitions. [2025-04-13 18:01:39,755 INFO L79 Accepts]: Start accepts. Automaton has 219 states and 691 transitions. Word has length 16 [2025-04-13 18:01:39,755 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:39,755 INFO L485 AbstractCegarLoop]: Abstraction has 219 states and 691 transitions. [2025-04-13 18:01:39,755 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:39,755 INFO L278 IsEmpty]: Start isEmpty. Operand 219 states and 691 transitions. [2025-04-13 18:01:39,756 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:01:39,756 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:39,756 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:39,763 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 18:01:39,956 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-04-13 18:01:39,956 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 18:01:39,957 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:39,957 INFO L85 PathProgramCache]: Analyzing trace with hash -586812085, now seen corresponding path program 21 times [2025-04-13 18:01:39,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:39,957 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165553828] [2025-04-13 18:01:39,957 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:39,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:39,959 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:01:39,966 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:39,967 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:01:39,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:40,108 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 18:01:40,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:40,108 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165553828] [2025-04-13 18:01:40,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165553828] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:40,108 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931843646] [2025-04-13 18:01:40,108 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:01:40,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:40,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:40,111 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 18:01:40,112 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 18:01:40,137 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:01:40,146 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:40,146 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:01:40,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:40,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:01:40,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:40,545 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 18:01:40,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:40,786 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 18:01:40,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931843646] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:40,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:01:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486246989] [2025-04-13 18:01:40,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:40,786 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:40,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:40,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:40,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:40,787 INFO L87 Difference]: Start difference. First operand 219 states and 691 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:42,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:42,593 INFO L93 Difference]: Finished difference Result 346 states and 925 transitions. [2025-04-13 18:01:42,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 18:01:42,594 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:01:42,597 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:42,599 INFO L225 Difference]: With dead ends: 346 [2025-04-13 18:01:42,599 INFO L226 Difference]: Without dead ends: 341 [2025-04-13 18:01:42,600 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=267, Invalid=1215, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:01:42,600 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 87 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:42,600 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 47 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:01:42,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2025-04-13 18:01:42,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 209. [2025-04-13 18:01:42,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 3.105769230769231) internal successors, (646), 208 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 646 transitions. [2025-04-13 18:01:42,782 INFO L79 Accepts]: Start accepts. Automaton has 209 states and 646 transitions. Word has length 16 [2025-04-13 18:01:42,782 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:42,782 INFO L485 AbstractCegarLoop]: Abstraction has 209 states and 646 transitions. [2025-04-13 18:01:42,782 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:42,782 INFO L278 IsEmpty]: Start isEmpty. Operand 209 states and 646 transitions. [2025-04-13 18:01:42,782 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:01:42,782 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:42,782 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:42,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-04-13 18:01:42,983 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,SelfDestructingSolverStorable28 [2025-04-13 18:01:42,983 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 18:01:42,983 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:42,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1581859477, now seen corresponding path program 22 times [2025-04-13 18:01:42,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:42,983 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425523308] [2025-04-13 18:01:42,983 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:42,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:42,986 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:01:42,990 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 18:01:42,991 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:42,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:43,190 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 18:01:43,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:43,190 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425523308] [2025-04-13 18:01:43,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425523308] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:43,190 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497954069] [2025-04-13 18:01:43,190 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:01:43,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:43,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:43,194 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 18:01:43,195 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 18:01:43,227 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:01:43,239 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 18:01:43,240 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:01:43,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:43,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:01:43,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:43,773 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 18:01:43,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:44,136 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 18:01:44,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497954069] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:44,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:44,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:01:44,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407110248] [2025-04-13 18:01:44,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:44,137 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:44,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:44,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:44,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:44,142 INFO L87 Difference]: Start difference. First operand 209 states and 646 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:46,245 INFO L93 Difference]: Finished difference Result 345 states and 930 transitions. [2025-04-13 18:01:46,245 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 18:01:46,246 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:01:46,246 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:46,247 INFO L225 Difference]: With dead ends: 345 [2025-04-13 18:01:46,247 INFO L226 Difference]: Without dead ends: 340 [2025-04-13 18:01:46,248 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=299, Invalid=1423, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:01:46,248 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 117 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:46,248 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 28 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:01:46,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2025-04-13 18:01:46,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 219. [2025-04-13 18:01:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 3.169724770642202) internal successors, (691), 218 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 691 transitions. [2025-04-13 18:01:46,410 INFO L79 Accepts]: Start accepts. Automaton has 219 states and 691 transitions. Word has length 16 [2025-04-13 18:01:46,410 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:46,410 INFO L485 AbstractCegarLoop]: Abstraction has 219 states and 691 transitions. [2025-04-13 18:01:46,410 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:46,410 INFO L278 IsEmpty]: Start isEmpty. Operand 219 states and 691 transitions. [2025-04-13 18:01:46,411 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:01:46,411 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:46,411 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:46,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-04-13 18:01:46,612 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:46,612 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 18:01:46,612 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:46,613 INFO L85 PathProgramCache]: Analyzing trace with hash -25661709, now seen corresponding path program 23 times [2025-04-13 18:01:46,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:46,613 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533873962] [2025-04-13 18:01:46,613 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:46,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:46,616 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:01:46,622 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:46,622 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:46,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:46,847 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 18:01:46,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:46,848 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533873962] [2025-04-13 18:01:46,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533873962] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:46,848 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540986229] [2025-04-13 18:01:46,848 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:01:46,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:46,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:46,850 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 18:01:46,852 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 18:01:46,877 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:01:46,888 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:46,888 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:01:46,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:46,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:01:46,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:47,497 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 18:01:47,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:47,887 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 18:01:47,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540986229] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:47,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:47,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:01:47,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502454189] [2025-04-13 18:01:47,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:47,887 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:47,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:47,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:47,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:47,888 INFO L87 Difference]: Start difference. First operand 219 states and 691 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:50,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:50,014 INFO L93 Difference]: Finished difference Result 385 states and 1039 transitions. [2025-04-13 18:01:50,015 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 18:01:50,015 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:01:50,015 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:50,017 INFO L225 Difference]: With dead ends: 385 [2025-04-13 18:01:50,017 INFO L226 Difference]: Without dead ends: 380 [2025-04-13 18:01:50,017 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=258, Invalid=1302, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:01:50,018 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 148 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:50,018 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 33 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:01:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2025-04-13 18:01:50,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 235. [2025-04-13 18:01:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 3.2606837606837606) internal successors, (763), 234 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:50,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 763 transitions. [2025-04-13 18:01:50,192 INFO L79 Accepts]: Start accepts. Automaton has 235 states and 763 transitions. Word has length 16 [2025-04-13 18:01:50,192 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:50,192 INFO L485 AbstractCegarLoop]: Abstraction has 235 states and 763 transitions. [2025-04-13 18:01:50,192 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:50,192 INFO L278 IsEmpty]: Start isEmpty. Operand 235 states and 763 transitions. [2025-04-13 18:01:50,192 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:01:50,193 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:50,193 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:50,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-04-13 18:01:50,393 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:50,393 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 18:01:50,394 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash -22980519, now seen corresponding path program 24 times [2025-04-13 18:01:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:50,394 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254549735] [2025-04-13 18:01:50,394 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:50,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:50,397 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:01:50,404 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:50,404 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:01:50,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:50,791 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 18:01:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:50,791 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254549735] [2025-04-13 18:01:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254549735] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:50,791 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860574247] [2025-04-13 18:01:50,791 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:01:50,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:50,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:50,796 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 18:01:50,804 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 18:01:50,840 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:01:50,856 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:50,856 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:01:50,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:50,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:01:50,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:51,929 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 18:01:51,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:52,494 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 18:01:52,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860574247] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:52,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:52,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:01:52,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574903467] [2025-04-13 18:01:52,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:52,495 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:52,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:52,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:52,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:52,496 INFO L87 Difference]: Start difference. First operand 235 states and 763 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:54,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:54,602 INFO L93 Difference]: Finished difference Result 377 states and 1024 transitions. [2025-04-13 18:01:54,602 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 18:01:54,602 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:01:54,603 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:54,604 INFO L225 Difference]: With dead ends: 377 [2025-04-13 18:01:54,604 INFO L226 Difference]: Without dead ends: 372 [2025-04-13 18:01:54,604 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=226, Invalid=1256, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:01:54,605 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 103 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:54,605 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 37 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:01:54,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2025-04-13 18:01:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 231. [2025-04-13 18:01:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 3.239130434782609) internal successors, (745), 230 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 745 transitions. [2025-04-13 18:01:54,768 INFO L79 Accepts]: Start accepts. Automaton has 231 states and 745 transitions. Word has length 16 [2025-04-13 18:01:54,768 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:54,768 INFO L485 AbstractCegarLoop]: Abstraction has 231 states and 745 transitions. [2025-04-13 18:01:54,768 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:54,768 INFO L278 IsEmpty]: Start isEmpty. Operand 231 states and 745 transitions. [2025-04-13 18:01:54,769 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:01:54,769 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:54,769 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:54,774 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 18:01:54,969 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:54,969 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 18:01:54,969 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash 32430741, now seen corresponding path program 25 times [2025-04-13 18:01:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:54,970 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881227371] [2025-04-13 18:01:54,970 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:54,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:54,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:01:54,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:54,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:54,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:55,154 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 18:01:55,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:55,155 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881227371] [2025-04-13 18:01:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881227371] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:55,155 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750772810] [2025-04-13 18:01:55,155 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:01:55,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:55,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:55,157 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 18:01:55,158 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 18:01:55,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:01:55,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:55,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:01:55,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:55,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:01:55,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:55,675 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 18:01:55,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:56,090 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 18:01:56,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750772810] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:56,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:56,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:01:56,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817434555] [2025-04-13 18:01:56,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:56,091 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:01:56,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:56,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:01:56,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:01:56,092 INFO L87 Difference]: Start difference. First operand 231 states and 745 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:01:57,560 INFO L93 Difference]: Finished difference Result 310 states and 893 transitions. [2025-04-13 18:01:57,561 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:01:57,561 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:01:57,561 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:01:57,562 INFO L225 Difference]: With dead ends: 310 [2025-04-13 18:01:57,562 INFO L226 Difference]: Without dead ends: 305 [2025-04-13 18:01:57,563 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:01:57,563 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 63 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:01:57,563 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 42 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:01:57,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2025-04-13 18:01:57,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 237. [2025-04-13 18:01:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 3.2203389830508473) internal successors, (760), 236 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 18:01:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 760 transitions. [2025-04-13 18:01:57,718 INFO L79 Accepts]: Start accepts. Automaton has 237 states and 760 transitions. Word has length 16 [2025-04-13 18:01:57,718 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:01:57,718 INFO L485 AbstractCegarLoop]: Abstraction has 237 states and 760 transitions. [2025-04-13 18:01:57,718 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:01:57,718 INFO L278 IsEmpty]: Start isEmpty. Operand 237 states and 760 transitions. [2025-04-13 18:01:57,719 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:01:57,719 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:01:57,719 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:01:57,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-04-13 18:01:57,919 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:57,919 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 18:01:57,920 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:01:57,920 INFO L85 PathProgramCache]: Analyzing trace with hash -685151123, now seen corresponding path program 26 times [2025-04-13 18:01:57,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:01:57,920 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470182001] [2025-04-13 18:01:57,920 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:57,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:01:57,923 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:01:57,926 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:57,926 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:57,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:58,054 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 18:01:58,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:01:58,054 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470182001] [2025-04-13 18:01:58,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470182001] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:01:58,054 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543942555] [2025-04-13 18:01:58,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:01:58,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:01:58,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:01:58,059 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 18:01:58,060 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 18:01:58,085 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:01:58,094 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:01:58,096 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:01:58,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:01:58,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:01:58,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:01:58,441 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 18:01:58,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:01:58,772 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 18:01:58,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543942555] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:01:58,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:01:58,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:01:58,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875405887] [2025-04-13 18:01:58,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:01:58,773 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:01:58,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:01:58,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:01:58,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:01:58,773 INFO L87 Difference]: Start difference. First operand 237 states and 760 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:00,061 INFO L93 Difference]: Finished difference Result 342 states and 971 transitions. [2025-04-13 18:02:00,061 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:02:00,061 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:00,061 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:00,063 INFO L225 Difference]: With dead ends: 342 [2025-04-13 18:02:00,063 INFO L226 Difference]: Without dead ends: 337 [2025-04-13 18:02:00,063 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:02:00,064 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 96 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:00,064 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 23 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:02:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2025-04-13 18:02:00,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 241. [2025-04-13 18:02:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 3.225) internal successors, (774), 240 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 774 transitions. [2025-04-13 18:02:00,226 INFO L79 Accepts]: Start accepts. Automaton has 241 states and 774 transitions. Word has length 16 [2025-04-13 18:02:00,226 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:00,226 INFO L485 AbstractCegarLoop]: Abstraction has 241 states and 774 transitions. [2025-04-13 18:02:00,226 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:00,226 INFO L278 IsEmpty]: Start isEmpty. Operand 241 states and 774 transitions. [2025-04-13 18:02:00,227 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:00,227 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:00,227 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:00,233 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 18:02:00,431 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,SelfDestructingSolverStorable33 [2025-04-13 18:02:00,432 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 18:02:00,432 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash -574328603, now seen corresponding path program 27 times [2025-04-13 18:02:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:00,432 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557215298] [2025-04-13 18:02:00,432 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:00,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:00,435 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:00,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:00,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:00,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:00,554 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 18:02:00,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:00,554 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557215298] [2025-04-13 18:02:00,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557215298] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:00,555 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249207662] [2025-04-13 18:02:00,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:00,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:00,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:00,556 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 18:02:00,557 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 18:02:00,579 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:00,591 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:00,591 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:00,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:00,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:00,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:00,972 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 18:02:00,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:01,259 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 18:02:01,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249207662] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:01,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:01,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:01,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143068642] [2025-04-13 18:02:01,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:01,260 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:01,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:01,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:01,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:01,260 INFO L87 Difference]: Start difference. First operand 241 states and 774 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:03,212 INFO L93 Difference]: Finished difference Result 376 states and 1048 transitions. [2025-04-13 18:02:03,212 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:02:03,212 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:03,213 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:03,215 INFO L225 Difference]: With dead ends: 376 [2025-04-13 18:02:03,215 INFO L226 Difference]: Without dead ends: 371 [2025-04-13 18:02:03,216 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=224, Invalid=1182, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:02:03,216 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 93 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:03,217 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 31 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:02:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2025-04-13 18:02:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 251. [2025-04-13 18:02:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 3.276) internal successors, (819), 250 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 819 transitions. [2025-04-13 18:02:03,438 INFO L79 Accepts]: Start accepts. Automaton has 251 states and 819 transitions. Word has length 16 [2025-04-13 18:02:03,438 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:03,438 INFO L485 AbstractCegarLoop]: Abstraction has 251 states and 819 transitions. [2025-04-13 18:02:03,438 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:03,438 INFO L278 IsEmpty]: Start isEmpty. Operand 251 states and 819 transitions. [2025-04-13 18:02:03,443 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:03,443 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:03,443 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:03,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-04-13 18:02:03,643 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:03,644 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 18:02:03,645 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:03,645 INFO L85 PathProgramCache]: Analyzing trace with hash -571647413, now seen corresponding path program 28 times [2025-04-13 18:02:03,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:03,645 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360800152] [2025-04-13 18:02:03,645 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:03,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:03,651 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:03,655 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 18:02:03,655 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:03,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:03,849 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 18:02:03,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:03,849 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360800152] [2025-04-13 18:02:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360800152] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:03,849 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708316541] [2025-04-13 18:02:03,849 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:03,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:03,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:03,851 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 18:02:03,853 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 18:02:03,877 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:03,886 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 18:02:03,886 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:03,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:03,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:03,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:04,329 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 18:02:04,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:04,730 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 18:02:04,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708316541] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:04,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:04,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:04,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814434492] [2025-04-13 18:02:04,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:04,730 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:04,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:04,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:04,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:04,731 INFO L87 Difference]: Start difference. First operand 251 states and 819 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:06,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:06,684 INFO L93 Difference]: Finished difference Result 357 states and 1019 transitions. [2025-04-13 18:02:06,685 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:02:06,685 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:06,685 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:06,687 INFO L225 Difference]: With dead ends: 357 [2025-04-13 18:02:06,687 INFO L226 Difference]: Without dead ends: 352 [2025-04-13 18:02:06,687 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:02:06,688 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 61 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:06,688 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 29 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 18:02:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2025-04-13 18:02:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 245. [2025-04-13 18:02:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 3.2459016393442623) internal successors, (792), 244 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 792 transitions. [2025-04-13 18:02:06,874 INFO L79 Accepts]: Start accepts. Automaton has 245 states and 792 transitions. Word has length 16 [2025-04-13 18:02:06,874 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:06,874 INFO L485 AbstractCegarLoop]: Abstraction has 245 states and 792 transitions. [2025-04-13 18:02:06,874 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:06,874 INFO L278 IsEmpty]: Start isEmpty. Operand 245 states and 792 transitions. [2025-04-13 18:02:06,875 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:06,875 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:06,875 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:06,888 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 18:02:07,079 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:07,082 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 18:02:07,083 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:07,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2002294987, now seen corresponding path program 29 times [2025-04-13 18:02:07,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:07,083 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951406871] [2025-04-13 18:02:07,083 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:02:07,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:07,090 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:07,098 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:07,102 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:02:07,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:07,346 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 18:02:07,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:07,347 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951406871] [2025-04-13 18:02:07,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951406871] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:07,347 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034372344] [2025-04-13 18:02:07,347 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:02:07,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:07,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:07,349 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 18:02:07,350 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 18:02:07,374 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:07,390 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:07,390 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:02:07,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:07,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:07,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:07,870 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 18:02:07,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:08,333 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 18:02:08,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034372344] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:08,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:08,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:08,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517764050] [2025-04-13 18:02:08,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:08,334 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:08,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:08,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:08,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:08,334 INFO L87 Difference]: Start difference. First operand 245 states and 792 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:10,212 INFO L93 Difference]: Finished difference Result 361 states and 1016 transitions. [2025-04-13 18:02:10,212 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:02:10,212 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:10,212 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:10,214 INFO L225 Difference]: With dead ends: 361 [2025-04-13 18:02:10,214 INFO L226 Difference]: Without dead ends: 356 [2025-04-13 18:02:10,214 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:02:10,215 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 84 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:10,215 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 31 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:02:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2025-04-13 18:02:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 253. [2025-04-13 18:02:10,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 3.2857142857142856) internal successors, (828), 252 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 828 transitions. [2025-04-13 18:02:10,405 INFO L79 Accepts]: Start accepts. Automaton has 253 states and 828 transitions. Word has length 16 [2025-04-13 18:02:10,405 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:10,405 INFO L485 AbstractCegarLoop]: Abstraction has 253 states and 828 transitions. [2025-04-13 18:02:10,405 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:10,406 INFO L278 IsEmpty]: Start isEmpty. Operand 253 states and 828 transitions. [2025-04-13 18:02:10,406 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:10,406 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:10,406 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:10,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-04-13 18:02:10,608 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,SelfDestructingSolverStorable36 [2025-04-13 18:02:10,609 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 18:02:10,616 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:10,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2004976177, now seen corresponding path program 30 times [2025-04-13 18:02:10,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:10,616 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307702480] [2025-04-13 18:02:10,616 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:10,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:10,621 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:10,627 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:10,627 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:02:10,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:10,778 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 18:02:10,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:10,779 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307702480] [2025-04-13 18:02:10,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307702480] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:10,779 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343029545] [2025-04-13 18:02:10,779 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:10,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:10,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:10,781 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 18:02:10,782 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 18:02:10,806 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:10,817 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:10,818 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:02:10,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:10,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:10,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:11,426 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 18:02:11,426 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:12,088 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 18:02:12,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343029545] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:12,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:12,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:12,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077167944] [2025-04-13 18:02:12,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:12,089 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:12,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:12,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:12,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:12,090 INFO L87 Difference]: Start difference. First operand 253 states and 828 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:14,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:14,023 INFO L93 Difference]: Finished difference Result 344 states and 986 transitions. [2025-04-13 18:02:14,023 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:02:14,023 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:14,023 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:14,025 INFO L225 Difference]: With dead ends: 344 [2025-04-13 18:02:14,025 INFO L226 Difference]: Without dead ends: 339 [2025-04-13 18:02:14,025 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=163, Invalid=959, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:02:14,026 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 84 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:14,026 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 34 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:02:14,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2025-04-13 18:02:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 247. [2025-04-13 18:02:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 3.2560975609756095) internal successors, (801), 246 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:14,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 801 transitions. [2025-04-13 18:02:14,199 INFO L79 Accepts]: Start accepts. Automaton has 247 states and 801 transitions. Word has length 16 [2025-04-13 18:02:14,199 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:14,199 INFO L485 AbstractCegarLoop]: Abstraction has 247 states and 801 transitions. [2025-04-13 18:02:14,199 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:14,199 INFO L278 IsEmpty]: Start isEmpty. Operand 247 states and 801 transitions. [2025-04-13 18:02:14,200 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:14,200 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:14,200 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:14,206 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 18:02:14,400 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-04-13 18:02:14,401 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 18:02:14,401 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:14,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2060387437, now seen corresponding path program 31 times [2025-04-13 18:02:14,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:14,401 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461903618] [2025-04-13 18:02:14,401 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:14,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:14,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:02:14,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:14,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:14,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:14,545 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 18:02:14,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:14,545 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461903618] [2025-04-13 18:02:14,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461903618] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:14,545 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138661238] [2025-04-13 18:02:14,545 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:14,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:14,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:14,559 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 18:02:14,560 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 18:02:14,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:02:14,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:14,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:14,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:14,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:14,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:15,115 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 18:02:15,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:15,569 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 18:02:15,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138661238] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:15,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:15,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:02:15,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102491408] [2025-04-13 18:02:15,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:15,574 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:02:15,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:15,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:02:15,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:02:15,574 INFO L87 Difference]: Start difference. First operand 247 states and 801 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:17,280 INFO L93 Difference]: Finished difference Result 303 states and 897 transitions. [2025-04-13 18:02:17,281 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-04-13 18:02:17,281 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:17,281 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:17,282 INFO L225 Difference]: With dead ends: 303 [2025-04-13 18:02:17,282 INFO L226 Difference]: Without dead ends: 298 [2025-04-13 18:02:17,283 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:02:17,283 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 54 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:17,283 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 36 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:02:17,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2025-04-13 18:02:17,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 247. [2025-04-13 18:02:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 3.2560975609756095) internal successors, (801), 246 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 801 transitions. [2025-04-13 18:02:17,466 INFO L79 Accepts]: Start accepts. Automaton has 247 states and 801 transitions. Word has length 16 [2025-04-13 18:02:17,466 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:17,466 INFO L485 AbstractCegarLoop]: Abstraction has 247 states and 801 transitions. [2025-04-13 18:02:17,466 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:17,466 INFO L278 IsEmpty]: Start isEmpty. Operand 247 states and 801 transitions. [2025-04-13 18:02:17,466 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:17,466 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:17,466 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:17,472 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 18:02:17,671 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,SelfDestructingSolverStorable38 [2025-04-13 18:02:17,672 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 18:02:17,672 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:17,672 INFO L85 PathProgramCache]: Analyzing trace with hash 273247653, now seen corresponding path program 32 times [2025-04-13 18:02:17,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:17,672 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907783955] [2025-04-13 18:02:17,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:17,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:17,675 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:17,678 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:17,678 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:17,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:17,794 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 18:02:17,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:17,794 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907783955] [2025-04-13 18:02:17,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907783955] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:17,794 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346025169] [2025-04-13 18:02:17,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:17,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:17,796 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 18:02:17,798 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 18:02:17,822 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:17,831 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:17,831 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:17,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:17,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:17,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:18,257 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 18:02:18,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:18,700 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 18:02:18,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346025169] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:18,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:18,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:18,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120598079] [2025-04-13 18:02:18,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:18,701 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:18,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:18,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:18,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:18,701 INFO L87 Difference]: Start difference. First operand 247 states and 801 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:19,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:19,752 INFO L93 Difference]: Finished difference Result 336 states and 988 transitions. [2025-04-13 18:02:19,753 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-04-13 18:02:19,753 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:19,753 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:19,754 INFO L225 Difference]: With dead ends: 336 [2025-04-13 18:02:19,754 INFO L226 Difference]: Without dead ends: 331 [2025-04-13 18:02:19,755 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:02:19,755 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 100 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:19,756 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 24 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:02:19,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2025-04-13 18:02:19,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 259. [2025-04-13 18:02:19,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 3.306201550387597) internal successors, (853), 258 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 853 transitions. [2025-04-13 18:02:19,966 INFO L79 Accepts]: Start accepts. Automaton has 259 states and 853 transitions. Word has length 16 [2025-04-13 18:02:19,966 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:19,967 INFO L485 AbstractCegarLoop]: Abstraction has 259 states and 853 transitions. [2025-04-13 18:02:19,967 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:19,967 INFO L278 IsEmpty]: Start isEmpty. Operand 259 states and 853 transitions. [2025-04-13 18:02:19,971 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:19,971 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:19,971 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:19,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-04-13 18:02:20,171 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-04-13 18:02:20,172 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 18:02:20,172 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash 275928843, now seen corresponding path program 33 times [2025-04-13 18:02:20,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:20,172 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551271640] [2025-04-13 18:02:20,172 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:20,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:20,174 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:20,179 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:20,179 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:20,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:20,308 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 18:02:20,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:20,308 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551271640] [2025-04-13 18:02:20,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551271640] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:20,308 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529197586] [2025-04-13 18:02:20,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:20,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:20,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:20,310 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 18:02:20,312 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 18:02:20,337 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:20,347 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:20,347 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:20,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:20,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:20,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:20,751 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 18:02:20,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:21,086 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 18:02:21,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529197586] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:21,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:21,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:21,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868118591] [2025-04-13 18:02:21,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:21,087 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:21,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:21,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:21,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:21,088 INFO L87 Difference]: Start difference. First operand 259 states and 853 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:22,254 INFO L93 Difference]: Finished difference Result 328 states and 976 transitions. [2025-04-13 18:02:22,254 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:02:22,255 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:22,255 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:22,256 INFO L225 Difference]: With dead ends: 328 [2025-04-13 18:02:22,256 INFO L226 Difference]: Without dead ends: 323 [2025-04-13 18:02:22,257 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:02:22,257 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 97 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:22,257 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 32 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:02:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2025-04-13 18:02:22,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 255. [2025-04-13 18:02:22,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.2874015748031495) internal successors, (835), 254 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:22,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 835 transitions. [2025-04-13 18:02:22,424 INFO L79 Accepts]: Start accepts. Automaton has 255 states and 835 transitions. Word has length 16 [2025-04-13 18:02:22,425 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:22,425 INFO L485 AbstractCegarLoop]: Abstraction has 255 states and 835 transitions. [2025-04-13 18:02:22,425 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:22,425 INFO L278 IsEmpty]: Start isEmpty. Operand 255 states and 835 transitions. [2025-04-13 18:02:22,425 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:22,425 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:22,425 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:22,431 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 18:02:22,630 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:22,630 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 18:02:22,630 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash 331340103, now seen corresponding path program 34 times [2025-04-13 18:02:22,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:22,630 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328535276] [2025-04-13 18:02:22,630 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:22,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:22,632 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:22,637 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 18:02:22,637 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:22,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:22,758 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 18:02:22,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:22,758 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328535276] [2025-04-13 18:02:22,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328535276] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:22,758 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869857735] [2025-04-13 18:02:22,758 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:22,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:22,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:22,760 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 18:02:22,763 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 18:02:22,788 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:22,798 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 18:02:22,798 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:22,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:22,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:22,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:23,161 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 18:02:23,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:23,537 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 18:02:23,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869857735] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:23,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:23,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:02:23,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72096380] [2025-04-13 18:02:23,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:23,538 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:02:23,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:23,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:02:23,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:02:23,538 INFO L87 Difference]: Start difference. First operand 255 states and 835 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:24,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:24,797 INFO L93 Difference]: Finished difference Result 306 states and 923 transitions. [2025-04-13 18:02:24,798 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:02:24,798 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:24,798 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:24,799 INFO L225 Difference]: With dead ends: 306 [2025-04-13 18:02:24,799 INFO L226 Difference]: Without dead ends: 301 [2025-04-13 18:02:24,800 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:02:24,800 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 81 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:24,800 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 27 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:02:24,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2025-04-13 18:02:24,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 255. [2025-04-13 18:02:24,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 3.2874015748031495) internal successors, (835), 254 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 835 transitions. [2025-04-13 18:02:24,966 INFO L79 Accepts]: Start accepts. Automaton has 255 states and 835 transitions. Word has length 16 [2025-04-13 18:02:24,966 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:24,966 INFO L485 AbstractCegarLoop]: Abstraction has 255 states and 835 transitions. [2025-04-13 18:02:24,966 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:24,967 INFO L278 IsEmpty]: Start isEmpty. Operand 255 states and 835 transitions. [2025-04-13 18:02:24,967 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:24,967 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:24,967 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:24,973 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 18:02:25,167 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,SelfDestructingSolverStorable41 [2025-04-13 18:02:25,168 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 18:02:25,168 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:25,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2049089163, now seen corresponding path program 35 times [2025-04-13 18:02:25,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:25,168 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410569732] [2025-04-13 18:02:25,168 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:02:25,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:25,170 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:25,173 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:25,173 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:25,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:25,308 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 18:02:25,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:25,308 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410569732] [2025-04-13 18:02:25,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410569732] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:25,308 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664354931] [2025-04-13 18:02:25,308 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:02:25,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:25,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:25,310 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 18:02:25,311 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 18:02:25,335 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:25,344 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:25,344 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:25,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:25,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:25,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:25,692 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 18:02:25,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:26,029 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 18:02:26,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664354931] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:26,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:26,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:02:26,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988075050] [2025-04-13 18:02:26,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:26,030 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:02:26,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:26,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:02:26,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:02:26,031 INFO L87 Difference]: Start difference. First operand 255 states and 835 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:26,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:26,751 INFO L93 Difference]: Finished difference Result 276 states and 869 transitions. [2025-04-13 18:02:26,752 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 18:02:26,752 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:26,752 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:26,753 INFO L225 Difference]: With dead ends: 276 [2025-04-13 18:02:26,753 INFO L226 Difference]: Without dead ends: 271 [2025-04-13 18:02:26,754 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:02:26,754 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:26,754 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 25 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:02:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2025-04-13 18:02:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 257. [2025-04-13 18:02:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 3.2734375) internal successors, (838), 256 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 838 transitions. [2025-04-13 18:02:26,936 INFO L79 Accepts]: Start accepts. Automaton has 257 states and 838 transitions. Word has length 16 [2025-04-13 18:02:26,936 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:26,936 INFO L485 AbstractCegarLoop]: Abstraction has 257 states and 838 transitions. [2025-04-13 18:02:26,936 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:26,936 INFO L278 IsEmpty]: Start isEmpty. Operand 257 states and 838 transitions. [2025-04-13 18:02:26,936 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:26,936 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:26,936 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:26,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2025-04-13 18:02:27,137 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,SelfDestructingSolverStorable42 [2025-04-13 18:02:27,137 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 18:02:27,137 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:27,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1995815915, now seen corresponding path program 36 times [2025-04-13 18:02:27,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:27,137 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877203929] [2025-04-13 18:02:27,137 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:27,140 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:27,142 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:27,142 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:02:27,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:27,250 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 18:02:27,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:27,251 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877203929] [2025-04-13 18:02:27,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877203929] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:27,251 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282169276] [2025-04-13 18:02:27,251 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:27,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:27,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:27,253 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 18:02:27,254 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 18:02:27,275 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:27,283 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:27,283 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:02:27,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:27,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:27,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:27,582 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 18:02:27,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:27,842 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 18:02:27,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282169276] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:27,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:27,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:27,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588959085] [2025-04-13 18:02:27,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:27,843 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:27,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:27,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:27,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:27,844 INFO L87 Difference]: Start difference. First operand 257 states and 838 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:29,611 INFO L93 Difference]: Finished difference Result 424 states and 1183 transitions. [2025-04-13 18:02:29,612 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 18:02:29,612 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:29,612 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:29,614 INFO L225 Difference]: With dead ends: 424 [2025-04-13 18:02:29,614 INFO L226 Difference]: Without dead ends: 419 [2025-04-13 18:02:29,615 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=1172, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:02:29,615 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 115 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:29,615 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 21 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:02:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2025-04-13 18:02:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 263. [2025-04-13 18:02:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 3.2938931297709924) internal successors, (863), 262 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 863 transitions. [2025-04-13 18:02:29,853 INFO L79 Accepts]: Start accepts. Automaton has 263 states and 863 transitions. Word has length 16 [2025-04-13 18:02:29,853 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:29,853 INFO L485 AbstractCegarLoop]: Abstraction has 263 states and 863 transitions. [2025-04-13 18:02:29,853 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:29,853 INFO L278 IsEmpty]: Start isEmpty. Operand 263 states and 863 transitions. [2025-04-13 18:02:29,854 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:29,854 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:29,854 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:29,861 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 18:02:30,054 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,SelfDestructingSolverStorable43 [2025-04-13 18:02:30,055 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 18:02:30,055 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:30,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1884993395, now seen corresponding path program 37 times [2025-04-13 18:02:30,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:30,055 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598411173] [2025-04-13 18:02:30,055 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:30,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:30,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:02:30,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:30,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:30,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:30,175 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 18:02:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:30,175 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598411173] [2025-04-13 18:02:30,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598411173] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:30,175 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315050227] [2025-04-13 18:02:30,175 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:30,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:30,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:30,177 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 18:02:30,178 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 18:02:30,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:02:30,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:30,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:30,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:30,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:30,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:30,617 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 18:02:30,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:30,913 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 18:02:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315050227] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:30,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:30,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:30,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090541856] [2025-04-13 18:02:30,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:30,914 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:30,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:30,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:30,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:30,915 INFO L87 Difference]: Start difference. First operand 263 states and 863 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:33,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:33,360 INFO L93 Difference]: Finished difference Result 474 states and 1301 transitions. [2025-04-13 18:02:33,360 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 18:02:33,360 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:33,360 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:33,362 INFO L225 Difference]: With dead ends: 474 [2025-04-13 18:02:33,362 INFO L226 Difference]: Without dead ends: 460 [2025-04-13 18:02:33,362 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=246, Invalid=1314, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:02:33,363 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 115 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:33,363 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 34 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 18:02:33,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2025-04-13 18:02:33,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 281. [2025-04-13 18:02:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.3642857142857143) internal successors, (942), 280 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 942 transitions. [2025-04-13 18:02:33,559 INFO L79 Accepts]: Start accepts. Automaton has 281 states and 942 transitions. Word has length 16 [2025-04-13 18:02:33,559 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:33,559 INFO L485 AbstractCegarLoop]: Abstraction has 281 states and 942 transitions. [2025-04-13 18:02:33,559 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:33,559 INFO L278 IsEmpty]: Start isEmpty. Operand 281 states and 942 transitions. [2025-04-13 18:02:33,559 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:33,559 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:33,559 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:33,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2025-04-13 18:02:33,760 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:33,760 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 18:02:33,760 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:33,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1882312205, now seen corresponding path program 38 times [2025-04-13 18:02:33,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:33,760 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399820296] [2025-04-13 18:02:33,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:33,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:33,763 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:33,765 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:33,765 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:33,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:33,887 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 18:02:33,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:33,888 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399820296] [2025-04-13 18:02:33,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399820296] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:33,888 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762926921] [2025-04-13 18:02:33,888 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:33,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:33,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:33,890 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 18:02:33,891 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 18:02:33,914 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:33,924 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:33,924 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:33,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:33,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:33,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:34,414 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 18:02:34,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:34,739 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 18:02:34,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762926921] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:34,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:34,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:34,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598170725] [2025-04-13 18:02:34,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:34,740 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:34,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:34,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:34,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:34,741 INFO L87 Difference]: Start difference. First operand 281 states and 942 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:36,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:36,829 INFO L93 Difference]: Finished difference Result 435 states and 1215 transitions. [2025-04-13 18:02:36,829 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 18:02:36,829 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:36,829 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:36,831 INFO L225 Difference]: With dead ends: 435 [2025-04-13 18:02:36,831 INFO L226 Difference]: Without dead ends: 430 [2025-04-13 18:02:36,831 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:02:36,831 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 97 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:36,832 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 23 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-04-13 18:02:36,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2025-04-13 18:02:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 265. [2025-04-13 18:02:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 3.2954545454545454) internal successors, (870), 264 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 870 transitions. [2025-04-13 18:02:37,017 INFO L79 Accepts]: Start accepts. Automaton has 265 states and 870 transitions. Word has length 16 [2025-04-13 18:02:37,017 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:37,017 INFO L485 AbstractCegarLoop]: Abstraction has 265 states and 870 transitions. [2025-04-13 18:02:37,017 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:37,017 INFO L278 IsEmpty]: Start isEmpty. Operand 265 states and 870 transitions. [2025-04-13 18:02:37,017 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:37,017 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:37,017 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:37,025 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 18:02:37,218 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:37,218 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 18:02:37,218 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:37,218 INFO L85 PathProgramCache]: Analyzing trace with hash 691630195, now seen corresponding path program 39 times [2025-04-13 18:02:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:37,218 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090385911] [2025-04-13 18:02:37,218 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:37,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:37,220 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:37,223 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:37,224 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:37,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:37,346 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 18:02:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:37,346 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090385911] [2025-04-13 18:02:37,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090385911] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:37,346 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138775330] [2025-04-13 18:02:37,346 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:37,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:37,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:37,348 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 18:02:37,354 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 18:02:37,377 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:37,386 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:37,387 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:02:37,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:37,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:37,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:37,751 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 18:02:37,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:38,047 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 18:02:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138775330] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:38,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:38,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214475521] [2025-04-13 18:02:38,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:38,047 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:38,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:38,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:38,048 INFO L87 Difference]: Start difference. First operand 265 states and 870 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:40,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:40,331 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2025-04-13 18:02:40,331 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 18:02:40,331 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:40,331 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:40,333 INFO L225 Difference]: With dead ends: 437 [2025-04-13 18:02:40,333 INFO L226 Difference]: Without dead ends: 432 [2025-04-13 18:02:40,333 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=184, Invalid=1222, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:02:40,333 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 109 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:40,334 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 28 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-13 18:02:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2025-04-13 18:02:40,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 275. [2025-04-13 18:02:40,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 3.3394160583941606) internal successors, (915), 274 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 915 transitions. [2025-04-13 18:02:40,528 INFO L79 Accepts]: Start accepts. Automaton has 275 states and 915 transitions. Word has length 16 [2025-04-13 18:02:40,528 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:40,528 INFO L485 AbstractCegarLoop]: Abstraction has 275 states and 915 transitions. [2025-04-13 18:02:40,528 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:40,528 INFO L278 IsEmpty]: Start isEmpty. Operand 275 states and 915 transitions. [2025-04-13 18:02:40,528 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:40,529 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:40,529 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:40,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2025-04-13 18:02:40,729 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,SelfDestructingSolverStorable46 [2025-04-13 18:02:40,729 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 18:02:40,729 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:40,730 INFO L85 PathProgramCache]: Analyzing trace with hash 694311385, now seen corresponding path program 40 times [2025-04-13 18:02:40,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:40,730 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595306427] [2025-04-13 18:02:40,730 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:40,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:40,732 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:40,735 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 18:02:40,735 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:40,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:40,851 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 18:02:40,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:40,851 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595306427] [2025-04-13 18:02:40,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595306427] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:40,852 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65540413] [2025-04-13 18:02:40,852 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:40,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:40,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:40,853 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 18:02:40,855 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 18:02:40,876 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:40,885 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 18:02:40,885 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:40,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:40,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:40,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:41,233 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 18:02:41,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:41,494 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 18:02:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65540413] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:41,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:41,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:41,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130233847] [2025-04-13 18:02:41,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:41,495 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:41,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:41,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:41,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:41,496 INFO L87 Difference]: Start difference. First operand 275 states and 915 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:43,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:43,459 INFO L93 Difference]: Finished difference Result 420 states and 1171 transitions. [2025-04-13 18:02:43,459 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 18:02:43,459 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:43,459 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:43,461 INFO L225 Difference]: With dead ends: 420 [2025-04-13 18:02:43,461 INFO L226 Difference]: Without dead ends: 415 [2025-04-13 18:02:43,462 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=180, Invalid=1226, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:02:43,462 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 116 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:43,462 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 28 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:02:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2025-04-13 18:02:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 269. [2025-04-13 18:02:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 3.3134328358208953) internal successors, (888), 268 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 888 transitions. [2025-04-13 18:02:43,669 INFO L79 Accepts]: Start accepts. Automaton has 269 states and 888 transitions. Word has length 16 [2025-04-13 18:02:43,669 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:43,669 INFO L485 AbstractCegarLoop]: Abstraction has 269 states and 888 transitions. [2025-04-13 18:02:43,669 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:43,669 INFO L278 IsEmpty]: Start isEmpty. Operand 269 states and 888 transitions. [2025-04-13 18:02:43,670 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:43,670 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:43,670 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:43,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2025-04-13 18:02:43,870 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-04-13 18:02:43,870 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 18:02:43,871 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:43,871 INFO L85 PathProgramCache]: Analyzing trace with hash 749722645, now seen corresponding path program 41 times [2025-04-13 18:02:43,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:43,871 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608686606] [2025-04-13 18:02:43,871 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:02:43,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:43,873 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:43,876 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:43,876 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:43,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:44,005 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 18:02:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:44,005 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608686606] [2025-04-13 18:02:44,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608686606] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:44,005 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768812030] [2025-04-13 18:02:44,005 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:02:44,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:44,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:44,008 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 18:02:44,009 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 18:02:44,030 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:44,039 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:44,039 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:44,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:44,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:44,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:44,427 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 18:02:44,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:44,744 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 18:02:44,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768812030] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:44,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:44,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:02:44,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435432156] [2025-04-13 18:02:44,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:44,744 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:02:44,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:44,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:02:44,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:02:44,745 INFO L87 Difference]: Start difference. First operand 269 states and 888 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:46,458 INFO L93 Difference]: Finished difference Result 373 states and 1061 transitions. [2025-04-13 18:02:46,458 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-04-13 18:02:46,459 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:46,459 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:46,460 INFO L225 Difference]: With dead ends: 373 [2025-04-13 18:02:46,460 INFO L226 Difference]: Without dead ends: 368 [2025-04-13 18:02:46,460 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=1188, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:02:46,461 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 92 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:46,461 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 31 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:02:46,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2025-04-13 18:02:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 269. [2025-04-13 18:02:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 3.3134328358208953) internal successors, (888), 268 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 888 transitions. [2025-04-13 18:02:46,655 INFO L79 Accepts]: Start accepts. Automaton has 269 states and 888 transitions. Word has length 16 [2025-04-13 18:02:46,656 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:46,656 INFO L485 AbstractCegarLoop]: Abstraction has 269 states and 888 transitions. [2025-04-13 18:02:46,656 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:46,656 INFO L278 IsEmpty]: Start isEmpty. Operand 269 states and 888 transitions. [2025-04-13 18:02:46,656 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:46,656 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:46,656 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:46,662 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 18:02:46,857 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,SelfDestructingSolverStorable48 [2025-04-13 18:02:46,857 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 18:02:46,857 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1037417139, now seen corresponding path program 42 times [2025-04-13 18:02:46,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:46,857 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618502118] [2025-04-13 18:02:46,857 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:46,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:46,860 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:46,862 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:46,862 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:02:46,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:46,982 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 18:02:46,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:46,983 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618502118] [2025-04-13 18:02:46,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618502118] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:46,983 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757725756] [2025-04-13 18:02:46,983 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:02:46,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:46,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:46,985 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 18:02:46,986 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 18:02:47,008 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 3 equivalence classes. [2025-04-13 18:02:47,016 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:47,017 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:02:47,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:47,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:47,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:47,383 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 18:02:47,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:47,669 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 18:02:47,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757725756] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:47,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:47,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:47,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660363994] [2025-04-13 18:02:47,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:47,670 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:47,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:47,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:47,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:47,670 INFO L87 Difference]: Start difference. First operand 269 states and 888 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:49,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:49,088 INFO L93 Difference]: Finished difference Result 408 states and 1165 transitions. [2025-04-13 18:02:49,089 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-04-13 18:02:49,089 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:49,089 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:49,091 INFO L225 Difference]: With dead ends: 408 [2025-04-13 18:02:49,091 INFO L226 Difference]: Without dead ends: 403 [2025-04-13 18:02:49,091 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2025-04-13 18:02:49,091 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 87 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:49,091 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 27 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:02:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2025-04-13 18:02:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 287. [2025-04-13 18:02:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 3.36013986013986) internal successors, (961), 286 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 961 transitions. [2025-04-13 18:02:49,303 INFO L79 Accepts]: Start accepts. Automaton has 287 states and 961 transitions. Word has length 16 [2025-04-13 18:02:49,303 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:49,303 INFO L485 AbstractCegarLoop]: Abstraction has 287 states and 961 transitions. [2025-04-13 18:02:49,303 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:49,303 INFO L278 IsEmpty]: Start isEmpty. Operand 287 states and 961 transitions. [2025-04-13 18:02:49,304 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:49,304 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:49,304 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:49,310 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 18:02:49,504 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:49,504 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 18:02:49,505 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:49,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1034735949, now seen corresponding path program 43 times [2025-04-13 18:02:49,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:49,505 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830885023] [2025-04-13 18:02:49,505 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:49,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:49,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:02:49,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:49,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:49,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:49,613 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 18:02:49,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:49,613 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830885023] [2025-04-13 18:02:49,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830885023] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:49,613 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152759322] [2025-04-13 18:02:49,613 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:02:49,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:49,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:49,615 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 18:02:49,616 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 18:02:49,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:02:49,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:49,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:02:49,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:49,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:49,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:49,969 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 18:02:49,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:50,252 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 18:02:50,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152759322] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:50,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:50,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:02:50,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898110235] [2025-04-13 18:02:50,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:50,252 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:02:50,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:50,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:02:50,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:02:50,253 INFO L87 Difference]: Start difference. First operand 287 states and 961 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:51,748 INFO L93 Difference]: Finished difference Result 402 states and 1156 transitions. [2025-04-13 18:02:51,748 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:02:51,748 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:51,748 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:51,750 INFO L225 Difference]: With dead ends: 402 [2025-04-13 18:02:51,750 INFO L226 Difference]: Without dead ends: 397 [2025-04-13 18:02:51,750 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:02:51,750 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 122 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:51,750 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 25 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:02:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2025-04-13 18:02:51,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 281. [2025-04-13 18:02:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.335714285714286) internal successors, (934), 280 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:51,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 934 transitions. [2025-04-13 18:02:51,954 INFO L79 Accepts]: Start accepts. Automaton has 281 states and 934 transitions. Word has length 16 [2025-04-13 18:02:51,954 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:51,954 INFO L485 AbstractCegarLoop]: Abstraction has 281 states and 934 transitions. [2025-04-13 18:02:51,954 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:51,955 INFO L278 IsEmpty]: Start isEmpty. Operand 281 states and 934 transitions. [2025-04-13 18:02:51,955 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:51,955 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:51,955 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:51,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2025-04-13 18:02:52,155 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:52,156 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 18:02:52,156 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:52,156 INFO L85 PathProgramCache]: Analyzing trace with hash -979324689, now seen corresponding path program 44 times [2025-04-13 18:02:52,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:52,156 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444938477] [2025-04-13 18:02:52,156 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:52,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:52,158 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:52,161 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:52,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:52,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:52,272 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 18:02:52,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:52,272 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444938477] [2025-04-13 18:02:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444938477] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:52,272 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463519627] [2025-04-13 18:02:52,272 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:02:52,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:52,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:52,274 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 18:02:52,276 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 18:02:52,298 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:52,306 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:52,307 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:02:52,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:52,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:52,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:52,616 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 18:02:52,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:52,937 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 18:02:52,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463519627] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:52,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:52,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:02:52,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825896483] [2025-04-13 18:02:52,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:52,938 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:02:52,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:52,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:02:52,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:02:52,939 INFO L87 Difference]: Start difference. First operand 281 states and 934 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:54,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:54,595 INFO L93 Difference]: Finished difference Result 378 states and 1094 transitions. [2025-04-13 18:02:54,595 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:02:54,595 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:54,595 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:54,597 INFO L225 Difference]: With dead ends: 378 [2025-04-13 18:02:54,597 INFO L226 Difference]: Without dead ends: 373 [2025-04-13 18:02:54,597 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=1140, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:02:54,597 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 91 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:54,597 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 26 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:02:54,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2025-04-13 18:02:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 277. [2025-04-13 18:02:54,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 3.318840579710145) internal successors, (916), 276 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:54,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 916 transitions. [2025-04-13 18:02:54,811 INFO L79 Accepts]: Start accepts. Automaton has 277 states and 916 transitions. Word has length 16 [2025-04-13 18:02:54,811 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:54,811 INFO L485 AbstractCegarLoop]: Abstraction has 277 states and 916 transitions. [2025-04-13 18:02:54,812 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:54,812 INFO L278 IsEmpty]: Start isEmpty. Operand 277 states and 916 transitions. [2025-04-13 18:02:54,812 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:54,812 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:54,812 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:54,818 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 18:02:55,012 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:55,013 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 18:02:55,013 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:55,013 INFO L85 PathProgramCache]: Analyzing trace with hash 738424371, now seen corresponding path program 45 times [2025-04-13 18:02:55,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:55,013 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273052473] [2025-04-13 18:02:55,013 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:55,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:55,015 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:55,017 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:55,017 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:02:55,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:55,127 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 18:02:55,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:55,127 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273052473] [2025-04-13 18:02:55,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273052473] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:55,127 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262267206] [2025-04-13 18:02:55,127 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:02:55,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:55,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:55,129 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 18:02:55,130 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 18:02:55,152 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:55,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:02:55,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:02:55,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:55,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:02:55,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:55,459 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 18:02:55,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:55,762 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 18:02:55,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262267206] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:55,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:55,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:02:55,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552175779] [2025-04-13 18:02:55,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:55,762 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:02:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:55,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:02:55,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:02:55,763 INFO L87 Difference]: Start difference. First operand 277 states and 916 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:57,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:02:57,241 INFO L93 Difference]: Finished difference Result 348 states and 1032 transitions. [2025-04-13 18:02:57,241 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:02:57,241 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:02:57,241 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:02:57,243 INFO L225 Difference]: With dead ends: 348 [2025-04-13 18:02:57,243 INFO L226 Difference]: Without dead ends: 343 [2025-04-13 18:02:57,243 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:02:57,244 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 73 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:02:57,244 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 36 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:02:57,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2025-04-13 18:02:57,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 277. [2025-04-13 18:02:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 3.318840579710145) internal successors, (916), 276 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 916 transitions. [2025-04-13 18:02:57,448 INFO L79 Accepts]: Start accepts. Automaton has 277 states and 916 transitions. Word has length 16 [2025-04-13 18:02:57,448 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:02:57,448 INFO L485 AbstractCegarLoop]: Abstraction has 277 states and 916 transitions. [2025-04-13 18:02:57,448 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:02:57,448 INFO L278 IsEmpty]: Start isEmpty. Operand 277 states and 916 transitions. [2025-04-13 18:02:57,449 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:02:57,449 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:02:57,449 INFO L218 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:02:57,455 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 18:02:57,649 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,SelfDestructingSolverStorable52 [2025-04-13 18:02:57,649 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 18:02:57,650 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:02:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash 944119164, now seen corresponding path program 46 times [2025-04-13 18:02:57,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:02:57,650 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167569062] [2025-04-13 18:02:57,650 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:57,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:02:57,652 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:57,661 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 18:02:57,661 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:57,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:58,017 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 18:02:58,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:02:58,017 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167569062] [2025-04-13 18:02:58,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167569062] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:02:58,017 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55791866] [2025-04-13 18:02:58,017 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:02:58,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:02:58,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:02:58,019 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 18:02:58,020 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 18:02:58,041 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:02:58,067 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 18:02:58,067 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:02:58,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:02:58,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:02:58,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:02:58,619 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 18:02:58,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:02:59,945 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 18:02:59,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55791866] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:02:59,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:02:59,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-04-13 18:02:59,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480242231] [2025-04-13 18:02:59,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:02:59,945 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:02:59,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:02:59,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:02:59,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:02:59,946 INFO L87 Difference]: Start difference. First operand 277 states and 916 transitions. Second operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:01,678 INFO L93 Difference]: Finished difference Result 320 states and 988 transitions. [2025-04-13 18:03:01,679 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-13 18:03:01,679 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:03:01,679 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:01,681 INFO L225 Difference]: With dead ends: 320 [2025-04-13 18:03:01,681 INFO L226 Difference]: Without dead ends: 311 [2025-04-13 18:03:01,681 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:03:01,682 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 55 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:01,682 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 24 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:03:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2025-04-13 18:03:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 281. [2025-04-13 18:03:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 3.2928571428571427) internal successors, (922), 280 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 922 transitions. [2025-04-13 18:03:01,925 INFO L79 Accepts]: Start accepts. Automaton has 281 states and 922 transitions. Word has length 16 [2025-04-13 18:03:01,925 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:01,925 INFO L485 AbstractCegarLoop]: Abstraction has 281 states and 922 transitions. [2025-04-13 18:03:01,925 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:01,925 INFO L278 IsEmpty]: Start isEmpty. Operand 281 states and 922 transitions. [2025-04-13 18:03:01,926 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:03:01,926 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:01,926 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:01,932 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 18:03:02,126 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,SelfDestructingSolverStorable53 [2025-04-13 18:03:02,127 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 18:03:02,127 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:02,127 INFO L85 PathProgramCache]: Analyzing trace with hash -864169447, now seen corresponding path program 47 times [2025-04-13 18:03:02,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:02,127 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053788264] [2025-04-13 18:03:02,127 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:03:02,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:02,129 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:03:02,132 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:03:02,132 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:03:02,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:02,264 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 18:03:02,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:02,264 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053788264] [2025-04-13 18:03:02,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053788264] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:02,264 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595546156] [2025-04-13 18:03:02,264 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:03:02,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:02,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:02,266 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 18:03:02,267 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 18:03:02,290 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:03:02,300 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:03:02,300 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:03:02,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:02,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:03:02,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:02,651 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 18:03:02,651 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:02,931 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 18:03:02,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595546156] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:02,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:02,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:03:02,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163915698] [2025-04-13 18:03:02,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:02,931 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:03:02,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:02,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:03:02,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:03:02,932 INFO L87 Difference]: Start difference. First operand 281 states and 922 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:04,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:04,289 INFO L93 Difference]: Finished difference Result 415 states and 1189 transitions. [2025-04-13 18:03:04,289 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:03:04,289 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:03:04,289 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:04,291 INFO L225 Difference]: With dead ends: 415 [2025-04-13 18:03:04,291 INFO L226 Difference]: Without dead ends: 410 [2025-04-13 18:03:04,291 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:03:04,292 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 122 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:04,292 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 29 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:03:04,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2025-04-13 18:03:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 291. [2025-04-13 18:03:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 3.3344827586206898) internal successors, (967), 290 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 18:03:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 967 transitions. [2025-04-13 18:03:04,547 INFO L79 Accepts]: Start accepts. Automaton has 291 states and 967 transitions. Word has length 16 [2025-04-13 18:03:04,547 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:04,547 INFO L485 AbstractCegarLoop]: Abstraction has 291 states and 967 transitions. [2025-04-13 18:03:04,547 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:04,547 INFO L278 IsEmpty]: Start isEmpty. Operand 291 states and 967 transitions. [2025-04-13 18:03:04,548 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:03:04,548 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:04,548 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:04,554 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 18:03:04,748 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:04,749 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 18:03:04,749 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:04,749 INFO L85 PathProgramCache]: Analyzing trace with hash -861488257, now seen corresponding path program 48 times [2025-04-13 18:03:04,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:04,749 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691420073] [2025-04-13 18:03:04,749 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:03:04,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:04,751 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:03:04,753 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:03:04,754 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:03:04,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:04,870 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 18:03:04,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:04,871 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691420073] [2025-04-13 18:03:04,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691420073] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:04,871 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645772948] [2025-04-13 18:03:04,871 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:03:04,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:04,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:04,873 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 18:03:04,874 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 18:03:04,896 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:03:04,904 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:03:04,905 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:03:04,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:04,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:03:04,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:05,228 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 18:03:05,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:05,494 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 18:03:05,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645772948] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:05,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:05,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-04-13 18:03:05,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877433726] [2025-04-13 18:03:05,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:05,495 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-04-13 18:03:05,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:05,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-04-13 18:03:05,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2025-04-13 18:03:05,495 INFO L87 Difference]: Start difference. First operand 291 states and 967 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:07,145 INFO L93 Difference]: Finished difference Result 414 states and 1188 transitions. [2025-04-13 18:03:07,145 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:03:07,145 INFO L79 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:03:07,145 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:07,147 INFO L225 Difference]: With dead ends: 414 [2025-04-13 18:03:07,147 INFO L226 Difference]: Without dead ends: 409 [2025-04-13 18:03:07,147 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:03:07,148 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 112 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:07,148 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 33 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:03:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2025-04-13 18:03:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 285. [2025-04-13 18:03:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 3.3098591549295775) internal successors, (940), 284 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 940 transitions. [2025-04-13 18:03:07,386 INFO L79 Accepts]: Start accepts. Automaton has 285 states and 940 transitions. Word has length 16 [2025-04-13 18:03:07,386 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:07,386 INFO L485 AbstractCegarLoop]: Abstraction has 285 states and 940 transitions. [2025-04-13 18:03:07,386 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:07,386 INFO L278 IsEmpty]: Start isEmpty. Operand 285 states and 940 transitions. [2025-04-13 18:03:07,386 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:03:07,386 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:07,386 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:07,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2025-04-13 18:03:07,587 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,SelfDestructingSolverStorable55 [2025-04-13 18:03:07,587 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 18:03:07,587 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:07,587 INFO L85 PathProgramCache]: Analyzing trace with hash -806076997, now seen corresponding path program 49 times [2025-04-13 18:03:07,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:07,587 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017758013] [2025-04-13 18:03:07,587 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:03:07,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:07,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:03:07,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:03:07,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:03:07,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:07,723 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 18:03:07,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:07,723 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017758013] [2025-04-13 18:03:07,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017758013] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:07,723 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325387257] [2025-04-13 18:03:07,723 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:03:07,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:07,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:07,725 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 18:03:07,726 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 18:03:07,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-13 18:03:07,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:03:07,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:03:07,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:07,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:03:07,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:08,156 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 18:03:08,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:08,480 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 18:03:08,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325387257] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:08,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:08,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:03:08,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552286270] [2025-04-13 18:03:08,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:08,481 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:03:08,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:08,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:03:08,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:03:08,481 INFO L87 Difference]: Start difference. First operand 285 states and 940 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:10,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:10,490 INFO L93 Difference]: Finished difference Result 391 states and 1122 transitions. [2025-04-13 18:03:10,490 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:03:10,490 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:03:10,490 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:10,492 INFO L225 Difference]: With dead ends: 391 [2025-04-13 18:03:10,492 INFO L226 Difference]: Without dead ends: 386 [2025-04-13 18:03:10,493 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=226, Invalid=1334, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:03:10,493 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 115 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:10,493 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 25 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:03:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2025-04-13 18:03:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 283. [2025-04-13 18:03:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 3.301418439716312) internal successors, (931), 282 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 931 transitions. [2025-04-13 18:03:10,741 INFO L79 Accepts]: Start accepts. Automaton has 283 states and 931 transitions. Word has length 16 [2025-04-13 18:03:10,741 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:10,741 INFO L485 AbstractCegarLoop]: Abstraction has 283 states and 931 transitions. [2025-04-13 18:03:10,741 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:10,741 INFO L278 IsEmpty]: Start isEmpty. Operand 283 states and 931 transitions. [2025-04-13 18:03:10,742 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:03:10,742 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:10,742 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:10,747 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 18:03:10,942 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-04-13 18:03:10,942 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 18:03:10,942 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:10,943 INFO L85 PathProgramCache]: Analyzing trace with hash 911672063, now seen corresponding path program 50 times [2025-04-13 18:03:10,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:10,943 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653524100] [2025-04-13 18:03:10,943 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:03:10,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:10,945 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:03:10,947 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:03:10,947 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:03:10,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:11,046 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 18:03:11,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:11,047 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653524100] [2025-04-13 18:03:11,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653524100] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:11,047 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812334859] [2025-04-13 18:03:11,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:03:11,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:11,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:11,048 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 18:03:11,049 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 18:03:11,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:03:11,079 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:03:11,079 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:03:11,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:11,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:03:11,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:11,364 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 18:03:11,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:11,641 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 18:03:11,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812334859] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:11,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:11,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:03:11,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648348679] [2025-04-13 18:03:11,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:11,641 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:03:11,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:11,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:03:11,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:03:11,642 INFO L87 Difference]: Start difference. First operand 283 states and 931 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:13,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:13,316 INFO L93 Difference]: Finished difference Result 357 states and 1052 transitions. [2025-04-13 18:03:13,317 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:03:13,317 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:03:13,317 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:13,318 INFO L225 Difference]: With dead ends: 357 [2025-04-13 18:03:13,318 INFO L226 Difference]: Without dead ends: 352 [2025-04-13 18:03:13,319 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 18:03:13,319 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 83 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:13,319 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 39 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:03:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2025-04-13 18:03:13,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 283. [2025-04-13 18:03:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 3.301418439716312) internal successors, (931), 282 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 931 transitions. [2025-04-13 18:03:13,559 INFO L79 Accepts]: Start accepts. Automaton has 283 states and 931 transitions. Word has length 16 [2025-04-13 18:03:13,559 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:13,559 INFO L485 AbstractCegarLoop]: Abstraction has 283 states and 931 transitions. [2025-04-13 18:03:13,560 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:13,560 INFO L278 IsEmpty]: Start isEmpty. Operand 283 states and 931 transitions. [2025-04-13 18:03:13,560 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-13 18:03:13,560 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:13,560 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:13,567 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 18:03:13,760 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:13,761 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 18:03:13,761 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:13,761 INFO L85 PathProgramCache]: Analyzing trace with hash 893238037, now seen corresponding path program 51 times [2025-04-13 18:03:13,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:13,761 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194078131] [2025-04-13 18:03:13,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:03:13,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:13,763 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:03:13,767 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:03:13,767 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:03:13,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:13,908 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 18:03:13,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:13,908 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194078131] [2025-04-13 18:03:13,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194078131] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:13,908 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510823197] [2025-04-13 18:03:13,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:03:13,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:13,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:13,911 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 18:03:13,911 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 18:03:13,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-04-13 18:03:13,945 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-04-13 18:03:13,945 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:03:13,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:13,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:03:13,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:14,329 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 18:03:14,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:14,616 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 18:03:14,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510823197] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:14,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:14,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-04-13 18:03:14,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120534647] [2025-04-13 18:03:14,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:14,617 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:03:14,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:14,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:03:14,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:03:14,617 INFO L87 Difference]: Start difference. First operand 283 states and 931 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:16,254 INFO L93 Difference]: Finished difference Result 353 states and 1046 transitions. [2025-04-13 18:03:16,254 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:03:16,254 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-04-13 18:03:16,254 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:16,256 INFO L225 Difference]: With dead ends: 353 [2025-04-13 18:03:16,256 INFO L226 Difference]: Without dead ends: 348 [2025-04-13 18:03:16,256 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:03:16,257 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 85 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:16,257 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 33 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-04-13 18:03:16,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2025-04-13 18:03:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 287. [2025-04-13 18:03:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 3.2762237762237763) internal successors, (937), 286 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 937 transitions. [2025-04-13 18:03:16,503 INFO L79 Accepts]: Start accepts. Automaton has 287 states and 937 transitions. Word has length 16 [2025-04-13 18:03:16,503 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:16,503 INFO L485 AbstractCegarLoop]: Abstraction has 287 states and 937 transitions. [2025-04-13 18:03:16,503 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:16,503 INFO L278 IsEmpty]: Start isEmpty. Operand 287 states and 937 transitions. [2025-04-13 18:03:16,504 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:03:16,504 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:16,504 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:16,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2025-04-13 18:03:16,704 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:16,705 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 18:03:16,706 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:16,706 INFO L85 PathProgramCache]: Analyzing trace with hash 168071406, now seen corresponding path program 52 times [2025-04-13 18:03:16,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:16,706 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540115387] [2025-04-13 18:03:16,706 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:03:16,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:16,708 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:03:16,712 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 18:03:16,712 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:03:16,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:17,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:17,059 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540115387] [2025-04-13 18:03:17,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540115387] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:17,059 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014553981] [2025-04-13 18:03:17,059 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:03:17,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:17,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:17,062 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 18:03:17,063 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 18:03:17,089 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:03:17,112 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 18:03:17,113 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:03:17,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:17,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-13 18:03:17,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:18,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:19,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014553981] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:19,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:19,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2025-04-13 18:03:19,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350245947] [2025-04-13 18:03:19,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:19,051 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:03:19,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:19,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:03:19,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:03:19,051 INFO L87 Difference]: Start difference. First operand 287 states and 937 transitions. Second operand has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:23,178 INFO L93 Difference]: Finished difference Result 435 states and 1203 transitions. [2025-04-13 18:03:23,178 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-04-13 18:03:23,178 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:03:23,178 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:23,186 INFO L225 Difference]: With dead ends: 435 [2025-04-13 18:03:23,186 INFO L226 Difference]: Without dead ends: 399 [2025-04-13 18:03:23,186 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:03:23,187 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 231 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:23,187 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 45 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 18:03:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2025-04-13 18:03:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 308. [2025-04-13 18:03:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.208469055374593) internal successors, (985), 307 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 985 transitions. [2025-04-13 18:03:23,605 INFO L79 Accepts]: Start accepts. Automaton has 308 states and 985 transitions. Word has length 17 [2025-04-13 18:03:23,605 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:23,605 INFO L485 AbstractCegarLoop]: Abstraction has 308 states and 985 transitions. [2025-04-13 18:03:23,606 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:23,606 INFO L278 IsEmpty]: Start isEmpty. Operand 308 states and 985 transitions. [2025-04-13 18:03:23,606 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:03:23,606 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:23,606 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:23,612 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 18:03:23,806 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-04-13 18:03:23,807 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 18:03:23,807 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash -344946469, now seen corresponding path program 53 times [2025-04-13 18:03:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:23,807 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897200082] [2025-04-13 18:03:23,807 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:03:23,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:23,809 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:03:23,821 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:03:23,821 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:03:23,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:24,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:24,259 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897200082] [2025-04-13 18:03:24,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897200082] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:24,259 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822756] [2025-04-13 18:03:24,259 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:03:24,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:24,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:24,261 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 18:03:24,263 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 18:03:24,285 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:03:24,317 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:03:24,317 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:03:24,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:24,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-13 18:03:24,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:25,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:03:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:28,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822756] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:03:28,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:03:28,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-04-13 18:03:28,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738396971] [2025-04-13 18:03:28,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:03:28,526 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:03:28,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:03:28,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:03:28,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:03:28,526 INFO L87 Difference]: Start difference. First operand 308 states and 985 transitions. Second operand has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:03:39,343 INFO L93 Difference]: Finished difference Result 459 states and 1286 transitions. [2025-04-13 18:03:39,343 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-04-13 18:03:39,343 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:03:39,343 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:03:39,348 INFO L225 Difference]: With dead ends: 459 [2025-04-13 18:03:39,349 INFO L226 Difference]: Without dead ends: 450 [2025-04-13 18:03:39,349 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=391, Invalid=1679, Unknown=0, NotChecked=0, Total=2070 [2025-04-13 18:03:39,349 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 194 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:03:39,349 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 76 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-04-13 18:03:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2025-04-13 18:03:39,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 333. [2025-04-13 18:03:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 3.216867469879518) internal successors, (1068), 332 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 1068 transitions. [2025-04-13 18:03:39,747 INFO L79 Accepts]: Start accepts. Automaton has 333 states and 1068 transitions. Word has length 17 [2025-04-13 18:03:39,747 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:03:39,747 INFO L485 AbstractCegarLoop]: Abstraction has 333 states and 1068 transitions. [2025-04-13 18:03:39,748 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:03:39,748 INFO L278 IsEmpty]: Start isEmpty. Operand 333 states and 1068 transitions. [2025-04-13 18:03:39,748 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:03:39,748 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:03:39,748 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:03:39,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2025-04-13 18:03:39,948 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:39,949 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 18:03:39,949 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:03:39,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1743396557, now seen corresponding path program 54 times [2025-04-13 18:03:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:03:39,949 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108432849] [2025-04-13 18:03:39,949 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:03:39,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:03:39,952 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:03:39,957 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:03:39,957 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:03:39,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:40,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:03:40,407 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108432849] [2025-04-13 18:03:40,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108432849] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:03:40,407 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404802622] [2025-04-13 18:03:40,407 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:03:40,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:03:40,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:03:40,409 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 18:03:40,410 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 18:03:40,435 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 3 equivalence classes. [2025-04-13 18:03:40,474 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:03:40,474 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:03:40,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:03:40,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-04-13 18:03:40,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:03:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:03:53,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:04:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:04:07,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404802622] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:04:07,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:04:07,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2025-04-13 18:04:07,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303540413] [2025-04-13 18:04:07,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:04:07,531 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 18:04:07,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:04:07,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 18:04:07,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=578, Unknown=1, NotChecked=0, Total=702 [2025-04-13 18:04:07,531 INFO L87 Difference]: Start difference. First operand 333 states and 1068 transitions. Second operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:04:17,105 WARN L286 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 157 DAG size of output: 147 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 18:04:34,777 WARN L286 SmtUtils]: Spent 16.86s on a formula simplification. DAG size of input: 123 DAG size of output: 109 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 18:04:58,362 WARN L286 SmtUtils]: Spent 21.84s on a formula simplification. DAG size of input: 157 DAG size of output: 133 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 18:07:15,127 WARN L286 SmtUtils]: Spent 1.79m on a formula simplification. DAG size of input: 203 DAG size of output: 186 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 18:07:37,546 WARN L286 SmtUtils]: Spent 16.40s on a formula simplification. DAG size of input: 134 DAG size of output: 127 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 18:08:10,940 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2025-04-13 18:08:14,380 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2025-04-13 18:08:18,772 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2025-04-13 18:09:17,131 WARN L286 SmtUtils]: Spent 27.17s on a formula simplification. DAG size of input: 186 DAG size of output: 168 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 18:09:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:09:24,446 INFO L93 Difference]: Finished difference Result 518 states and 1451 transitions. [2025-04-13 18:09:24,447 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-13 18:09:24,447 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:09:24,447 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:09:24,449 INFO L225 Difference]: With dead ends: 518 [2025-04-13 18:09:24,449 INFO L226 Difference]: Without dead ends: 509 [2025-04-13 18:09:24,450 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 314.2s TimeCoverageRelationStatistics Valid=571, Invalid=2608, Unknown=13, NotChecked=0, Total=3192 [2025-04-13 18:09:24,450 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 211 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 63 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:09:24,450 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 75 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1094 Invalid, 1 Unknown, 0 Unchecked, 16.0s Time] [2025-04-13 18:09:24,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2025-04-13 18:09:24,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 339. [2025-04-13 18:09:24,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 3.239644970414201) internal successors, (1095), 338 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 1095 transitions. [2025-04-13 18:09:24,847 INFO L79 Accepts]: Start accepts. Automaton has 339 states and 1095 transitions. Word has length 17 [2025-04-13 18:09:24,847 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:09:24,847 INFO L485 AbstractCegarLoop]: Abstraction has 339 states and 1095 transitions. [2025-04-13 18:09:24,847 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:09:24,847 INFO L278 IsEmpty]: Start isEmpty. Operand 339 states and 1095 transitions. [2025-04-13 18:09:24,848 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:09:24,848 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:09:24,848 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:09:24,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2025-04-13 18:09:25,048 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,SelfDestructingSolverStorable61 [2025-04-13 18:09:25,048 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 18:09:25,049 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:09:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1718461490, now seen corresponding path program 55 times [2025-04-13 18:09:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:09:25,049 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36462757] [2025-04-13 18:09:25,049 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:09:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:09:25,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:09:25,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:09:25,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:25,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:09:25,310 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36462757] [2025-04-13 18:09:25,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36462757] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:09:25,310 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831033285] [2025-04-13 18:09:25,310 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:09:25,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:09:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:09:25,312 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 18:09:25,313 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 18:09:25,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:09:25,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:09:25,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:09:25,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:09:25,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:09:25,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:09:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:09:26,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:12:10,067 WARN L286 SmtUtils]: Spent 1.87m on a formula simplification. DAG size of input: 120 DAG size of output: 104 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 18:12:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:12:22,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831033285] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:12:22,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:12:22,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-04-13 18:12:22,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808818748] [2025-04-13 18:12:22,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:12:22,912 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:12:22,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:12:22,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:12:22,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=530, Unknown=3, NotChecked=0, Total=650 [2025-04-13 18:12:22,913 INFO L87 Difference]: Start difference. First operand 339 states and 1095 transitions. Second operand has 26 states, 25 states have (on average 1.84) internal successors, (46), 25 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 18:12:34,382 WARN L286 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 147 DAG size of output: 124 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 18:12:52,347 WARN L286 SmtUtils]: Spent 13.35s on a formula simplification. DAG size of input: 142 DAG size of output: 119 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 18:13:08,576 WARN L286 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 142 DAG size of output: 84 (called from [L 386] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-04-13 18:13:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:13:09,719 INFO L93 Difference]: Finished difference Result 500 states and 1384 transitions. [2025-04-13 18:13:09,719 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:13:09,719 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.84) internal successors, (46), 25 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 17 [2025-04-13 18:13:09,719 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:13:09,721 INFO L225 Difference]: With dead ends: 500 [2025-04-13 18:13:09,721 INFO L226 Difference]: Without dead ends: 491 [2025-04-13 18:13:09,722 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 174.4s TimeCoverageRelationStatistics Valid=408, Invalid=1569, Unknown=3, NotChecked=0, Total=1980 [2025-04-13 18:13:09,722 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 284 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-04-13 18:13:09,722 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 65 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-04-13 18:13:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2025-04-13 18:13:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 345. [2025-04-13 18:13:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 3.261627906976744) internal successors, (1122), 344 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:13:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 1122 transitions. [2025-04-13 18:13:10,146 INFO L79 Accepts]: Start accepts. Automaton has 345 states and 1122 transitions. Word has length 17 [2025-04-13 18:13:10,146 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:13:10,147 INFO L485 AbstractCegarLoop]: Abstraction has 345 states and 1122 transitions. [2025-04-13 18:13:10,147 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.84) internal successors, (46), 25 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 18:13:10,147 INFO L278 IsEmpty]: Start isEmpty. Operand 345 states and 1122 transitions. [2025-04-13 18:13:10,147 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:13:10,147 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:13:10,147 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:13:10,153 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 18:13:10,348 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,SelfDestructingSolverStorable62 [2025-04-13 18:13:10,348 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 18:13:10,348 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:13:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1715780300, now seen corresponding path program 56 times [2025-04-13 18:13:10,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:13:10,348 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815955326] [2025-04-13 18:13:10,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:13:10,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:13:10,351 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:13:10,354 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:13:10,355 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:13:10,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:10,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:13:10,767 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815955326] [2025-04-13 18:13:10,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815955326] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:13:10,767 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073841670] [2025-04-13 18:13:10,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:13:10,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:10,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:13:10,769 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 18:13:10,770 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 18:13:10,796 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:13:10,824 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:13:10,824 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:13:10,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:13:10,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:13:10,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:13:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:19,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:13:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:13:22,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073841670] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:13:22,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:13:22,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-04-13 18:13:22,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382163642] [2025-04-13 18:13:22,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:13:22,205 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:13:22,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:13:22,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:13:22,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=535, Unknown=1, NotChecked=0, Total=650 [2025-04-13 18:13:22,206 INFO L87 Difference]: Start difference. First operand 345 states and 1122 transitions. Second operand has 26 states, 25 states have (on average 1.84) internal successors, (46), 25 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 18:13:27,926 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-04-13 18:13:32,024 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2025-04-13 18:13:32,939 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:13:32,969 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 18:13:33,011 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:13:33,011 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=192, Invalid=863, Unknown=1, NotChecked=0, Total=1056 [2025-04-13 18:13:33,012 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2025-04-13 18:13:33,012 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 64 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2025-04-13 18:13:33,013 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 18:13:33,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2025-04-13 18:13:33,213 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:13:33,213 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (345states) and FLOYD_HOARE automaton (currently 14 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (58 states constructed, input type IntersectNwa). [2025-04-13 18:13:33,218 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 18:13:33,218 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 18:13:33,221 INFO L422 BasicCegarLoop]: Path program histogram: [56, 3, 2, 2, 1] [2025-04-13 18:13:33,222 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 18:13:33,222 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 18:13:33,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 06:13:33 BasicIcfg [2025-04-13 18:13:33,224 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 18:13:33,225 INFO L158 Benchmark]: Toolchain (without parser) took 881256.85ms. Allocated memory was 155.2MB in the beginning and 528.5MB in the end (delta: 373.3MB). Free memory was 109.2MB in the beginning and 403.3MB in the end (delta: -294.2MB). Peak memory consumption was 75.6MB. Max. memory is 8.0GB. [2025-04-13 18:13:33,225 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.8MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:13:33,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.83ms. Allocated memory is still 155.2MB. Free memory was 108.3MB in the beginning and 93.7MB in the end (delta: 14.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 18:13:33,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.77ms. Allocated memory is still 155.2MB. Free memory was 93.7MB in the beginning and 92.2MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 18:13:33,225 INFO L158 Benchmark]: Boogie Preprocessor took 42.90ms. Allocated memory is still 155.2MB. Free memory was 92.2MB in the beginning and 90.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:13:33,225 INFO L158 Benchmark]: RCFGBuilder took 419.78ms. Allocated memory is still 155.2MB. Free memory was 90.4MB in the beginning and 47.6MB in the end (delta: 42.8MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2025-04-13 18:13:33,225 INFO L158 Benchmark]: TraceAbstraction took 880526.51ms. Allocated memory was 155.2MB in the beginning and 528.5MB in the end (delta: 373.3MB). Free memory was 47.6MB in the beginning and 403.3MB in the end (delta: -355.7MB). Peak memory consumption was 16.9MB. Max. memory is 8.0GB. [2025-04-13 18:13:33,226 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 231.83ms. Allocated memory is still 155.2MB. Free memory was 108.3MB in the beginning and 93.7MB in the end (delta: 14.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.77ms. Allocated memory is still 155.2MB. Free memory was 93.7MB in the beginning and 92.2MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.90ms. Allocated memory is still 155.2MB. Free memory was 92.2MB in the beginning and 90.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 419.78ms. Allocated memory is still 155.2MB. Free memory was 90.4MB in the beginning and 47.6MB in the end (delta: 42.8MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 880526.51ms. Allocated memory was 155.2MB in the beginning and 528.5MB in the end (delta: 373.3MB). Free memory was 47.6MB in the beginning and 403.3MB in the end (delta: -355.7MB). Peak memory consumption was 16.9MB. 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: 81]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (345states) and FLOYD_HOARE automaton (currently 14 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (58 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (345states) and FLOYD_HOARE automaton (currently 14 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (58 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (345states) and FLOYD_HOARE automaton (currently 14 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (58 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 24 locations, 29 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 880.4s, OverallIterations: 64, TraceHistogramMax: 4, PathProgramHistogramMax: 56, EmptinessCheckTime: 0.1s, AutomataDifference: 521.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 6084 SdHoareTripleChecker+Valid, 87.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6084 mSDsluCounter, 1879 SdHoareTripleChecker+Invalid, 83.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1673 mSDsCounter, 1467 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35088 IncrementalHoareTripleChecker+Invalid, 36560 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1467 mSolverCounterUnsat, 206 mSDtfsCounter, 35088 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2993 GetRequests, 1063 SyntacticMatches, 20 SemanticMatches, 1910 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17229 ImplicationChecksByTransitivity, 625.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=345occurred in iteration=63, InterpolantAutomatonStates: 1456, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.4s AutomataMinimizationTime, 63 MinimizatonAttempts, 5234 StatesRemovedByMinimization, 62 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 333.4s InterpolantComputationTime, 1919 NumberOfCodeBlocks, 1918 NumberOfCodeBlocksAsserted, 246 NumberOfCheckSat, 2670 ConstructedInterpolants, 5 QuantifiedInterpolants, 50377 SizeOfPredicates, 759 NumberOfNonLiveVariables, 6322 ConjunctsInSsa, 752 ConjunctsInUnsatCore, 184 InterpolantComputations, 4 PerfectInterpolantSequences, 3/1068 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