/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/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 18:37:04,093 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 18:37:04,146 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 18:37:04,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 18:37:04,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 18:37:04,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 18:37:04,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 18:37:04,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 18:37:04,169 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 18:37:04,169 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 18:37:04,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 18:37:04,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 18:37:04,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 18:37:04,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 18:37:04,169 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 18:37:04,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 18:37:04,170 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:37:04,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:37:04,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:37:04,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 18:37:04,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 18:37:04,171 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 18:37:04,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 18:37:04,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 18:37:04,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 18:37:04,378 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 18:37:04,378 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 18:37:04,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2025-04-13 18:37:05,604 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750c2c8dc/08a21a94caab4a3b98127ebb40d6223e/FLAGe84bdc56a [2025-04-13 18:37:05,815 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 18:37:05,816 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2025-04-13 18:37:05,821 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750c2c8dc/08a21a94caab4a3b98127ebb40d6223e/FLAGe84bdc56a [2025-04-13 18:37:06,654 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/750c2c8dc/08a21a94caab4a3b98127ebb40d6223e [2025-04-13 18:37:06,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 18:37:06,657 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 18:37:06,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 18:37:06,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 18:37:06,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 18:37:06,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661e7c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06, skipping insertion in model container [2025-04-13 18:37:06,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 18:37:06,817 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2063,2076] [2025-04-13 18:37:06,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:37:06,828 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 18:37:06,847 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c[2063,2076] [2025-04-13 18:37:06,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 18:37:06,860 INFO L204 MainTranslator]: Completed translation [2025-04-13 18:37:06,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06 WrapperNode [2025-04-13 18:37:06,862 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 18:37:06,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 18:37:06,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 18:37:06,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 18:37:06,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,882 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2025-04-13 18:37:06,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 18:37:06,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 18:37:06,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 18:37:06,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 18:37:06,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,889 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,900 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 18:37:06,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,902 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 18:37:06,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 18:37:06,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 18:37:06,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 18:37:06,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (1/1) ... [2025-04-13 18:37:06,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 18:37:06,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:06,930 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 18:37:06,932 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 18:37:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 18:37:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 18:37:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 18:37:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 18:37:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 18:37:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 18:37:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 18:37:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 18:37:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 18:37:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 18:37:06,949 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 18:37:07,004 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 18:37:07,005 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 18:37:07,103 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 18:37:07,103 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 18:37:07,103 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 18:37:07,220 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 18:37:07,227 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 18:37:07,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:37:07 BoogieIcfgContainer [2025-04-13 18:37:07,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 18:37:07,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 18:37:07,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 18:37:07,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 18:37:07,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 06:37:06" (1/3) ... [2025-04-13 18:37:07,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acea0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:37:07, skipping insertion in model container [2025-04-13 18:37:07,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 06:37:06" (2/3) ... [2025-04-13 18:37:07,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7acea0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 06:37:07, skipping insertion in model container [2025-04-13 18:37:07,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 06:37:07" (3/3) ... [2025-04-13 18:37:07,235 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2025-04-13 18:37:07,246 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 18:37:07,247 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr.wvr.c that has 3 procedures, 18 locations, 18 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-13 18:37:07,247 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 18:37:07,287 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 18:37:07,309 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 20 transitions, 54 flow [2025-04-13 18:37:07,321 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 48 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:07,336 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 18:37:07,342 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;@63b75071, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 18:37:07,342 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 18:37:07,344 INFO L278 IsEmpty]: Start isEmpty. Operand has 48 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:07,347 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-13 18:37:07,347 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:07,348 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:07,348 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 18:37:07,351 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:07,351 INFO L85 PathProgramCache]: Analyzing trace with hash -148623136, now seen corresponding path program 1 times [2025-04-13 18:37:07,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:07,356 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988818084] [2025-04-13 18:37:07,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:37:07,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:07,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-13 18:37:07,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-13 18:37:07,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:07,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:07,543 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 18:37:07,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:07,544 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988818084] [2025-04-13 18:37:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988818084] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:37:07,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:37:07,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 18:37:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409977104] [2025-04-13 18:37:07,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:37:07,547 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:37:07,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:07,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:37:07,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:37:07,561 INFO L87 Difference]: Start difference. First operand has 48 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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 18:37:07,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:07,627 INFO L93 Difference]: Finished difference Result 88 states and 212 transitions. [2025-04-13 18:37:07,628 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:37:07,629 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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 18:37:07,629 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:07,637 INFO L225 Difference]: With dead ends: 88 [2025-04-13 18:37:07,637 INFO L226 Difference]: Without dead ends: 66 [2025-04-13 18:37:07,640 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:37:07,642 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:07,642 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:37:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-04-13 18:37:07,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2025-04-13 18:37:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.3214285714285716) internal successors, (130), 56 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 130 transitions. [2025-04-13 18:37:07,671 INFO L79 Accepts]: Start accepts. Automaton has 57 states and 130 transitions. Word has length 11 [2025-04-13 18:37:07,672 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:07,672 INFO L485 AbstractCegarLoop]: Abstraction has 57 states and 130 transitions. [2025-04-13 18:37:07,672 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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 18:37:07,672 INFO L278 IsEmpty]: Start isEmpty. Operand 57 states and 130 transitions. [2025-04-13 18:37:07,673 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:37:07,673 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:07,673 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:07,674 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 18:37:07,674 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 18:37:07,674 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1693446397, now seen corresponding path program 1 times [2025-04-13 18:37:07,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:07,674 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992081649] [2025-04-13 18:37:07,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:37:07,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:07,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 18:37:07,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:37:07,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:07,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:07,892 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 18:37:07,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:07,893 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992081649] [2025-04-13 18:37:07,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992081649] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:07,893 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642698485] [2025-04-13 18:37:07,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:37:07,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:07,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:07,896 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 18:37:07,903 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 18:37:07,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-13 18:37:07,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:37:07,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:07,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:07,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-13 18:37:07,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:08,068 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 18:37:08,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:08,223 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 18:37:08,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642698485] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:08,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:08,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-04-13 18:37:08,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290686315] [2025-04-13 18:37:08,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:08,224 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-13 18:37:08,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:08,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-13 18:37:08,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:37:08,225 INFO L87 Difference]: Start difference. First operand 57 states and 130 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:08,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:08,304 INFO L93 Difference]: Finished difference Result 97 states and 226 transitions. [2025-04-13 18:37:08,304 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:37:08,304 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 18:37:08,304 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:08,305 INFO L225 Difference]: With dead ends: 97 [2025-04-13 18:37:08,305 INFO L226 Difference]: Without dead ends: 86 [2025-04-13 18:37:08,305 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:37:08,306 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:08,306 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:37:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-04-13 18:37:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 61. [2025-04-13 18:37:08,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 2.316666666666667) internal successors, (139), 60 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 139 transitions. [2025-04-13 18:37:08,311 INFO L79 Accepts]: Start accepts. Automaton has 61 states and 139 transitions. Word has length 15 [2025-04-13 18:37:08,311 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:08,311 INFO L485 AbstractCegarLoop]: Abstraction has 61 states and 139 transitions. [2025-04-13 18:37:08,311 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:08,312 INFO L278 IsEmpty]: Start isEmpty. Operand 61 states and 139 transitions. [2025-04-13 18:37:08,312 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-13 18:37:08,312 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:08,312 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:08,318 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 18:37:08,516 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:08,516 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 18:37:08,516 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 450663487, now seen corresponding path program 2 times [2025-04-13 18:37:08,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:08,516 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400749715] [2025-04-13 18:37:08,516 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:08,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:08,521 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 1 equivalence classes. [2025-04-13 18:37:08,530 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-13 18:37:08,530 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 18:37:08,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:08,616 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 18:37:08,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:08,616 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400749715] [2025-04-13 18:37:08,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400749715] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:37:08,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:37:08,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 18:37:08,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583552631] [2025-04-13 18:37:08,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:37:08,616 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 18:37:08,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:08,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 18:37:08,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:37:08,617 INFO L87 Difference]: Start difference. First operand 61 states and 139 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:08,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:08,672 INFO L93 Difference]: Finished difference Result 127 states and 291 transitions. [2025-04-13 18:37:08,672 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-13 18:37:08,672 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-13 18:37:08,673 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:08,673 INFO L225 Difference]: With dead ends: 127 [2025-04-13 18:37:08,673 INFO L226 Difference]: Without dead ends: 105 [2025-04-13 18:37:08,673 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 18:37:08,674 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:08,674 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 18:37:08,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-04-13 18:37:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2025-04-13 18:37:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 93 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 225 transitions. [2025-04-13 18:37:08,684 INFO L79 Accepts]: Start accepts. Automaton has 94 states and 225 transitions. Word has length 15 [2025-04-13 18:37:08,684 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:08,684 INFO L485 AbstractCegarLoop]: Abstraction has 94 states and 225 transitions. [2025-04-13 18:37:08,684 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:08,684 INFO L278 IsEmpty]: Start isEmpty. Operand 94 states and 225 transitions. [2025-04-13 18:37:08,685 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:37:08,685 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:08,685 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:08,685 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 18:37:08,685 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 18:37:08,685 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash -627153634, now seen corresponding path program 1 times [2025-04-13 18:37:08,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:08,685 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733498203] [2025-04-13 18:37:08,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:37:08,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:08,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:37:08,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:08,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:08,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:08,860 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 18:37:08,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:08,860 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733498203] [2025-04-13 18:37:08,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733498203] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:08,860 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576953618] [2025-04-13 18:37:08,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 18:37:08,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:08,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:08,862 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 18:37:08,863 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 18:37:08,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:37:08,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:08,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:08,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:08,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:37:08,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:08,986 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 18:37:08,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:09,105 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 18:37:09,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576953618] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:09,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:09,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-04-13 18:37:09,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054618877] [2025-04-13 18:37:09,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:09,105 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:37:09,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:09,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:37:09,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:37:09,106 INFO L87 Difference]: Start difference. First operand 94 states and 225 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:09,381 INFO L93 Difference]: Finished difference Result 184 states and 449 transitions. [2025-04-13 18:37:09,381 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:37:09,382 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:37:09,382 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:09,383 INFO L225 Difference]: With dead ends: 184 [2025-04-13 18:37:09,383 INFO L226 Difference]: Without dead ends: 172 [2025-04-13 18:37:09,383 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:37:09,384 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:09,384 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:09,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-04-13 18:37:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 122. [2025-04-13 18:37:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.4297520661157024) internal successors, (294), 121 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 294 transitions. [2025-04-13 18:37:09,399 INFO L79 Accepts]: Start accepts. Automaton has 122 states and 294 transitions. Word has length 17 [2025-04-13 18:37:09,399 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:09,400 INFO L485 AbstractCegarLoop]: Abstraction has 122 states and 294 transitions. [2025-04-13 18:37:09,400 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:09,400 INFO L278 IsEmpty]: Start isEmpty. Operand 122 states and 294 transitions. [2025-04-13 18:37:09,405 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:37:09,405 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:09,405 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:09,411 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 18:37:09,605 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 18:37:09,606 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 18:37:09,606 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1819216660, now seen corresponding path program 2 times [2025-04-13 18:37:09,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:09,606 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410646987] [2025-04-13 18:37:09,607 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:09,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:09,610 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:37:09,614 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:09,614 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 18:37:09,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:09,712 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 18:37:09,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:09,713 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410646987] [2025-04-13 18:37:09,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410646987] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:37:09,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:37:09,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 18:37:09,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247220901] [2025-04-13 18:37:09,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:37:09,713 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 18:37:09,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:09,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 18:37:09,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:37:09,714 INFO L87 Difference]: Start difference. First operand 122 states and 294 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:09,839 INFO L93 Difference]: Finished difference Result 177 states and 422 transitions. [2025-04-13 18:37:09,839 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-13 18:37:09,839 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:37:09,840 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:09,840 INFO L225 Difference]: With dead ends: 177 [2025-04-13 18:37:09,841 INFO L226 Difference]: Without dead ends: 165 [2025-04-13 18:37:09,841 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:37:09,841 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:09,841 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:37:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-04-13 18:37:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 124. [2025-04-13 18:37:09,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.4471544715447155) internal successors, (301), 123 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 301 transitions. [2025-04-13 18:37:09,850 INFO L79 Accepts]: Start accepts. Automaton has 124 states and 301 transitions. Word has length 17 [2025-04-13 18:37:09,850 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:09,850 INFO L485 AbstractCegarLoop]: Abstraction has 124 states and 301 transitions. [2025-04-13 18:37:09,850 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:09,850 INFO L278 IsEmpty]: Start isEmpty. Operand 124 states and 301 transitions. [2025-04-13 18:37:09,850 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:37:09,850 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:09,851 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:09,851 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 18:37:09,851 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 18:37:09,851 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:09,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1505056836, now seen corresponding path program 3 times [2025-04-13 18:37:09,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:09,851 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055268939] [2025-04-13 18:37:09,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:09,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:09,855 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:37:09,858 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:09,859 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:37:09,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:09,961 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 18:37:09,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:09,962 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055268939] [2025-04-13 18:37:09,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055268939] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:37:09,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:37:09,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 18:37:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081690939] [2025-04-13 18:37:09,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:37:09,962 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 18:37:09,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:09,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 18:37:09,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:37:09,963 INFO L87 Difference]: Start difference. First operand 124 states and 301 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:10,030 INFO L93 Difference]: Finished difference Result 137 states and 321 transitions. [2025-04-13 18:37:10,031 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:37:10,031 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:37:10,031 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:10,032 INFO L225 Difference]: With dead ends: 137 [2025-04-13 18:37:10,032 INFO L226 Difference]: Without dead ends: 126 [2025-04-13 18:37:10,032 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:37:10,032 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:10,033 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:37:10,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-04-13 18:37:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2025-04-13 18:37:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.430894308943089) internal successors, (299), 123 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:10,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 299 transitions. [2025-04-13 18:37:10,039 INFO L79 Accepts]: Start accepts. Automaton has 124 states and 299 transitions. Word has length 17 [2025-04-13 18:37:10,040 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:10,040 INFO L485 AbstractCegarLoop]: Abstraction has 124 states and 299 transitions. [2025-04-13 18:37:10,040 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:10,040 INFO L278 IsEmpty]: Start isEmpty. Operand 124 states and 299 transitions. [2025-04-13 18:37:10,040 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:37:10,040 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:10,040 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:10,041 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 18:37:10,041 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 18:37:10,041 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1810107420, now seen corresponding path program 4 times [2025-04-13 18:37:10,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:10,041 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928190479] [2025-04-13 18:37:10,041 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:10,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:10,044 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:37:10,047 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 16 of 17 statements. [2025-04-13 18:37:10,047 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:37:10,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:10,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:10,086 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928190479] [2025-04-13 18:37:10,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928190479] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:10,086 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159682468] [2025-04-13 18:37:10,086 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:10,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:10,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:10,088 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 18:37:10,090 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 18:37:10,116 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:37:10,123 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 16 of 17 statements. [2025-04-13 18:37:10,124 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:37:10,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:10,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-04-13 18:37:10,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:10,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:10,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159682468] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:10,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:10,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2025-04-13 18:37:10,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960236857] [2025-04-13 18:37:10,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:10,226 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-13 18:37:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:10,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-13 18:37:10,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:37:10,227 INFO L87 Difference]: Start difference. First operand 124 states and 299 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:10,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:10,429 INFO L93 Difference]: Finished difference Result 229 states and 586 transitions. [2025-04-13 18:37:10,430 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:37:10,430 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:37:10,430 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:10,431 INFO L225 Difference]: With dead ends: 229 [2025-04-13 18:37:10,431 INFO L226 Difference]: Without dead ends: 217 [2025-04-13 18:37:10,432 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:37:10,432 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 44 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:10,432 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:37:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-04-13 18:37:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 184. [2025-04-13 18:37:10,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.540983606557377) internal successors, (465), 183 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 465 transitions. [2025-04-13 18:37:10,453 INFO L79 Accepts]: Start accepts. Automaton has 184 states and 465 transitions. Word has length 17 [2025-04-13 18:37:10,453 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:10,453 INFO L485 AbstractCegarLoop]: Abstraction has 184 states and 465 transitions. [2025-04-13 18:37:10,453 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:10,453 INFO L278 IsEmpty]: Start isEmpty. Operand 184 states and 465 transitions. [2025-04-13 18:37:10,454 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:37:10,454 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:10,454 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:10,461 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 18:37:10,654 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:10,655 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 18:37:10,655 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:10,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1791673394, now seen corresponding path program 5 times [2025-04-13 18:37:10,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:10,655 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777860862] [2025-04-13 18:37:10,655 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:37:10,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:10,661 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:37:10,666 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:10,666 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:10,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:10,715 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 18:37:10,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:10,715 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777860862] [2025-04-13 18:37:10,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777860862] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:10,715 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922344318] [2025-04-13 18:37:10,715 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:37:10,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:10,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:10,718 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 18:37:10,719 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 18:37:10,744 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:37:10,754 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:10,755 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:10,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:10,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:37:10,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:10,823 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 18:37:10,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:10,879 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 18:37:10,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922344318] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:10,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:10,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2025-04-13 18:37:10,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380282741] [2025-04-13 18:37:10,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:10,880 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-13 18:37:10,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:10,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-13 18:37:10,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:37:10,880 INFO L87 Difference]: Start difference. First operand 184 states and 465 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:11,184 INFO L93 Difference]: Finished difference Result 374 states and 962 transitions. [2025-04-13 18:37:11,184 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-13 18:37:11,184 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:37:11,184 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:11,186 INFO L225 Difference]: With dead ends: 374 [2025-04-13 18:37:11,186 INFO L226 Difference]: Without dead ends: 359 [2025-04-13 18:37:11,187 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:37:11,187 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 62 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:11,187 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 4 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:11,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2025-04-13 18:37:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 242. [2025-04-13 18:37:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.6390041493775933) internal successors, (636), 241 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 636 transitions. [2025-04-13 18:37:11,205 INFO L79 Accepts]: Start accepts. Automaton has 242 states and 636 transitions. Word has length 17 [2025-04-13 18:37:11,205 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:11,205 INFO L485 AbstractCegarLoop]: Abstraction has 242 states and 636 transitions. [2025-04-13 18:37:11,205 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:11,205 INFO L278 IsEmpty]: Start isEmpty. Operand 242 states and 636 transitions. [2025-04-13 18:37:11,206 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:37:11,206 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:11,206 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:11,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-04-13 18:37:11,410 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 18:37:11,410 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 18:37:11,410 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:11,410 INFO L85 PathProgramCache]: Analyzing trace with hash 932204218, now seen corresponding path program 6 times [2025-04-13 18:37:11,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:11,410 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921305429] [2025-04-13 18:37:11,411 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:37:11,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:11,415 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:37:11,424 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:11,424 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-04-13 18:37:11,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:11,498 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 18:37:11,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:11,498 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921305429] [2025-04-13 18:37:11,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921305429] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 18:37:11,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 18:37:11,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-13 18:37:11,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370253147] [2025-04-13 18:37:11,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 18:37:11,499 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-13 18:37:11,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:11,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-13 18:37:11,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-04-13 18:37:11,499 INFO L87 Difference]: Start difference. First operand 242 states and 636 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:11,588 INFO L93 Difference]: Finished difference Result 271 states and 700 transitions. [2025-04-13 18:37:11,588 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-13 18:37:11,588 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:37:11,588 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:11,590 INFO L225 Difference]: With dead ends: 271 [2025-04-13 18:37:11,590 INFO L226 Difference]: Without dead ends: 260 [2025-04-13 18:37:11,590 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-04-13 18:37:11,591 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:11,591 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:37:11,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2025-04-13 18:37:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2025-04-13 18:37:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 2.631372549019608) internal successors, (671), 255 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:11,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 671 transitions. [2025-04-13 18:37:11,605 INFO L79 Accepts]: Start accepts. Automaton has 256 states and 671 transitions. Word has length 17 [2025-04-13 18:37:11,605 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:11,605 INFO L485 AbstractCegarLoop]: Abstraction has 256 states and 671 transitions. [2025-04-13 18:37:11,605 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:11,606 INFO L278 IsEmpty]: Start isEmpty. Operand 256 states and 671 transitions. [2025-04-13 18:37:11,606 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:37:11,606 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:11,606 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:11,606 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-13 18:37:11,606 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 18:37:11,608 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:11,609 INFO L85 PathProgramCache]: Analyzing trace with hash -993364964, now seen corresponding path program 7 times [2025-04-13 18:37:11,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:11,609 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592142885] [2025-04-13 18:37:11,609 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:37:11,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:11,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:37:11,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:11,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:11,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:11,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:11,698 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592142885] [2025-04-13 18:37:11,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592142885] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:11,698 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949312617] [2025-04-13 18:37:11,698 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:37:11,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:11,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:11,701 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 18:37:11,703 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 18:37:11,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-13 18:37:11,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:11,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:11,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:11,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:37:11,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:11,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:11,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949312617] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:11,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:11,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-04-13 18:37:11,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809687493] [2025-04-13 18:37:11,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:11,887 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-13 18:37:11,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:11,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-13 18:37:11,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2025-04-13 18:37:11,888 INFO L87 Difference]: Start difference. First operand 256 states and 671 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:12,303 INFO L93 Difference]: Finished difference Result 497 states and 1306 transitions. [2025-04-13 18:37:12,304 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-13 18:37:12,304 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:37:12,304 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:12,306 INFO L225 Difference]: With dead ends: 497 [2025-04-13 18:37:12,306 INFO L226 Difference]: Without dead ends: 485 [2025-04-13 18:37:12,306 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:37:12,307 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:12,307 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:12,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2025-04-13 18:37:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 260. [2025-04-13 18:37:12,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.629343629343629) internal successors, (681), 259 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 681 transitions. [2025-04-13 18:37:12,325 INFO L79 Accepts]: Start accepts. Automaton has 260 states and 681 transitions. Word has length 17 [2025-04-13 18:37:12,325 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:12,325 INFO L485 AbstractCegarLoop]: Abstraction has 260 states and 681 transitions. [2025-04-13 18:37:12,325 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:12,325 INFO L278 IsEmpty]: Start isEmpty. Operand 260 states and 681 transitions. [2025-04-13 18:37:12,326 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-04-13 18:37:12,326 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:12,326 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:12,335 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 18:37:12,526 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-04-13 18:37:12,527 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 18:37:12,527 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash -710246052, now seen corresponding path program 8 times [2025-04-13 18:37:12,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:12,527 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010111641] [2025-04-13 18:37:12,527 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:12,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:12,530 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:37:12,535 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:12,535 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:12,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:12,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:12,608 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010111641] [2025-04-13 18:37:12,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010111641] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:12,608 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606859544] [2025-04-13 18:37:12,608 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:12,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:12,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:12,610 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 18:37:12,612 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 18:37:12,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-04-13 18:37:12,644 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-04-13 18:37:12,644 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:12,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:12,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:37:12,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:12,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:12,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606859544] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:12,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:12,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-04-13 18:37:12,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020154571] [2025-04-13 18:37:12,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:12,793 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:37:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:12,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:37:12,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:37:12,794 INFO L87 Difference]: Start difference. First operand 260 states and 681 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:13,263 INFO L93 Difference]: Finished difference Result 517 states and 1435 transitions. [2025-04-13 18:37:13,264 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-04-13 18:37:13,264 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-04-13 18:37:13,264 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:13,268 INFO L225 Difference]: With dead ends: 517 [2025-04-13 18:37:13,268 INFO L226 Difference]: Without dead ends: 506 [2025-04-13 18:37:13,270 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:37:13,270 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 82 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:13,271 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 10 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2025-04-13 18:37:13,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 372. [2025-04-13 18:37:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 2.7735849056603774) internal successors, (1029), 371 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1029 transitions. [2025-04-13 18:37:13,317 INFO L79 Accepts]: Start accepts. Automaton has 372 states and 1029 transitions. Word has length 17 [2025-04-13 18:37:13,317 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:13,317 INFO L485 AbstractCegarLoop]: Abstraction has 372 states and 1029 transitions. [2025-04-13 18:37:13,318 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:13,318 INFO L278 IsEmpty]: Start isEmpty. Operand 372 states and 1029 transitions. [2025-04-13 18:37:13,318 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:37:13,319 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:13,319 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:13,325 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 18:37:13,523 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:13,523 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 18:37:13,528 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:13,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2036509312, now seen corresponding path program 9 times [2025-04-13 18:37:13,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:13,528 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070510415] [2025-04-13 18:37:13,528 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:13,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:13,531 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:37:13,536 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:37:13,536 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:37:13,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:13,600 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 18:37:13,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:13,600 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070510415] [2025-04-13 18:37:13,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070510415] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:13,601 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398062932] [2025-04-13 18:37:13,601 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:13,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:13,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:13,605 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 18:37:13,606 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 18:37:13,633 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:37:13,644 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:37:13,644 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:37:13,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:13,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:37:13,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:13,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:13,751 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 18:37:13,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398062932] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:13,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:13,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2025-04-13 18:37:13,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636906039] [2025-04-13 18:37:13,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:13,756 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-04-13 18:37:13,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:13,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-04-13 18:37:13,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-04-13 18:37:13,756 INFO L87 Difference]: Start difference. First operand 372 states and 1029 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:13,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:13,893 INFO L93 Difference]: Finished difference Result 460 states and 1241 transitions. [2025-04-13 18:37:13,893 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 18:37:13,893 INFO L79 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:37:13,894 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:13,896 INFO L225 Difference]: With dead ends: 460 [2025-04-13 18:37:13,896 INFO L226 Difference]: Without dead ends: 442 [2025-04-13 18:37:13,897 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-04-13 18:37:13,898 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 42 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:13,898 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:37:13,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2025-04-13 18:37:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 376. [2025-04-13 18:37:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 2.7706666666666666) internal successors, (1039), 375 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1039 transitions. [2025-04-13 18:37:13,942 INFO L79 Accepts]: Start accepts. Automaton has 376 states and 1039 transitions. Word has length 19 [2025-04-13 18:37:13,942 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:13,942 INFO L485 AbstractCegarLoop]: Abstraction has 376 states and 1039 transitions. [2025-04-13 18:37:13,943 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:13,943 INFO L278 IsEmpty]: Start isEmpty. Operand 376 states and 1039 transitions. [2025-04-13 18:37:13,943 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:37:13,943 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:13,943 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:13,950 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 18:37:14,144 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:14,144 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 18:37:14,145 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:14,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1140365024, now seen corresponding path program 10 times [2025-04-13 18:37:14,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:14,145 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449985951] [2025-04-13 18:37:14,145 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:14,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:14,148 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:37:14,152 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:37:14,152 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:37:14,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:14,223 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 18:37:14,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:14,223 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449985951] [2025-04-13 18:37:14,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449985951] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:14,223 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225259491] [2025-04-13 18:37:14,224 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:14,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:14,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:14,225 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 18:37:14,227 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 18:37:14,254 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-04-13 18:37:14,263 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:37:14,263 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:37:14,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:14,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:37:14,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:14,306 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 18:37:14,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:14,423 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 18:37:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225259491] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:14,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:14,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 6] total 10 [2025-04-13 18:37:14,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157068794] [2025-04-13 18:37:14,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:14,424 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 18:37:14,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:14,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 18:37:14,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:37:14,424 INFO L87 Difference]: Start difference. First operand 376 states and 1039 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:14,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:14,598 INFO L93 Difference]: Finished difference Result 852 states and 2366 transitions. [2025-04-13 18:37:14,598 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 18:37:14,599 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-04-13 18:37:14,599 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:14,603 INFO L225 Difference]: With dead ends: 852 [2025-04-13 18:37:14,603 INFO L226 Difference]: Without dead ends: 811 [2025-04-13 18:37:14,603 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-04-13 18:37:14,604 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 68 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:14,604 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 12 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:37:14,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2025-04-13 18:37:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 595. [2025-04-13 18:37:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 594 states have (on average 2.845117845117845) internal successors, (1690), 594 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 1690 transitions. [2025-04-13 18:37:14,651 INFO L79 Accepts]: Start accepts. Automaton has 595 states and 1690 transitions. Word has length 19 [2025-04-13 18:37:14,651 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:14,651 INFO L485 AbstractCegarLoop]: Abstraction has 595 states and 1690 transitions. [2025-04-13 18:37:14,651 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:14,651 INFO L278 IsEmpty]: Start isEmpty. Operand 595 states and 1690 transitions. [2025-04-13 18:37:14,652 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:37:14,654 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:14,655 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:14,660 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 18:37:14,855 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,SelfDestructingSolverStorable12 [2025-04-13 18:37:14,855 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 18:37:14,856 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:14,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2045798338, now seen corresponding path program 11 times [2025-04-13 18:37:14,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:14,856 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117118971] [2025-04-13 18:37:14,856 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:37:14,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:14,858 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:37:14,862 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:37:14,862 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:37:14,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:14,960 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 18:37:14,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:14,960 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117118971] [2025-04-13 18:37:14,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117118971] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:14,961 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667703688] [2025-04-13 18:37:14,961 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:37:14,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:14,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:14,963 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 18:37:14,964 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 18:37:14,991 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:37:15,001 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:37:15,002 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:37:15,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:15,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:37:15,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:15,091 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 18:37:15,092 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:15,228 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 18:37:15,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667703688] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:15,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:15,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2025-04-13 18:37:15,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504135518] [2025-04-13 18:37:15,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:15,229 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:37:15,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:15,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:37:15,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:37:15,229 INFO L87 Difference]: Start difference. First operand 595 states and 1690 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) 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 18:37:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:15,711 INFO L93 Difference]: Finished difference Result 1155 states and 3299 transitions. [2025-04-13 18:37:15,711 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:37:15,711 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) 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 19 [2025-04-13 18:37:15,711 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:15,716 INFO L225 Difference]: With dead ends: 1155 [2025-04-13 18:37:15,716 INFO L226 Difference]: Without dead ends: 1112 [2025-04-13 18:37:15,717 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=292, Invalid=1268, Unknown=0, NotChecked=0, Total=1560 [2025-04-13 18:37:15,717 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 104 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:15,718 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 6 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2025-04-13 18:37:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 677. [2025-04-13 18:37:15,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 2.7677514792899407) internal successors, (1871), 676 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:15,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1871 transitions. [2025-04-13 18:37:15,762 INFO L79 Accepts]: Start accepts. Automaton has 677 states and 1871 transitions. Word has length 19 [2025-04-13 18:37:15,762 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:15,762 INFO L485 AbstractCegarLoop]: Abstraction has 677 states and 1871 transitions. [2025-04-13 18:37:15,762 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) 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 18:37:15,762 INFO L278 IsEmpty]: Start isEmpty. Operand 677 states and 1871 transitions. [2025-04-13 18:37:15,763 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-04-13 18:37:15,763 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:15,763 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:15,769 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 18:37:15,965 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,SelfDestructingSolverStorable13 [2025-04-13 18:37:15,965 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 18:37:15,965 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:15,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2064232364, now seen corresponding path program 12 times [2025-04-13 18:37:15,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:15,965 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280549215] [2025-04-13 18:37:15,965 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:37:15,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:15,968 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:37:15,971 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:37:15,971 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:37:15,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:16,061 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 18:37:16,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:16,061 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280549215] [2025-04-13 18:37:16,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280549215] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:16,061 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542342744] [2025-04-13 18:37:16,061 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:37:16,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:16,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:16,064 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 18:37:16,065 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 18:37:16,091 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-04-13 18:37:16,100 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-04-13 18:37:16,101 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:37:16,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:16,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:37:16,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:16,172 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 18:37:16,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:16,258 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 18:37:16,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542342744] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:16,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:16,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-04-13 18:37:16,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78494644] [2025-04-13 18:37:16,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:16,259 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:37:16,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:16,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:37:16,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:37:16,259 INFO L87 Difference]: Start difference. First operand 677 states and 1871 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) 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 18:37:16,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:16,754 INFO L93 Difference]: Finished difference Result 1308 states and 3624 transitions. [2025-04-13 18:37:16,755 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:37:16,755 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) 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 19 [2025-04-13 18:37:16,756 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:16,761 INFO L225 Difference]: With dead ends: 1308 [2025-04-13 18:37:16,761 INFO L226 Difference]: Without dead ends: 1293 [2025-04-13 18:37:16,764 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=291, Invalid=969, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 18:37:16,764 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:16,764 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2025-04-13 18:37:16,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 675. [2025-04-13 18:37:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 2.8160237388724036) internal successors, (1898), 674 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1898 transitions. [2025-04-13 18:37:16,824 INFO L79 Accepts]: Start accepts. Automaton has 675 states and 1898 transitions. Word has length 19 [2025-04-13 18:37:16,824 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:16,824 INFO L485 AbstractCegarLoop]: Abstraction has 675 states and 1898 transitions. [2025-04-13 18:37:16,824 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) 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 18:37:16,824 INFO L278 IsEmpty]: Start isEmpty. Operand 675 states and 1898 transitions. [2025-04-13 18:37:16,826 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:16,826 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:16,826 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:16,832 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 18:37:17,026 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,SelfDestructingSolverStorable14 [2025-04-13 18:37:17,027 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 18:37:17,027 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2103678143, now seen corresponding path program 13 times [2025-04-13 18:37:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:17,027 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767104468] [2025-04-13 18:37:17,027 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:37:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:17,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:37:17,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:17,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:17,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:17,141 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 18:37:17,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:17,141 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767104468] [2025-04-13 18:37:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767104468] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:17,141 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250320756] [2025-04-13 18:37:17,141 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:37:17,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:17,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:17,143 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 18:37:17,144 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 18:37:17,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:37:17,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:17,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:17,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:17,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:37:17,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:17,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:37:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250320756] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:17,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:17,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 24 [2025-04-13 18:37:17,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714893475] [2025-04-13 18:37:17,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:17,372 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:37:17,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:17,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:37:17,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:37:17,373 INFO L87 Difference]: Start difference. First operand 675 states and 1898 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:17,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:17,902 INFO L93 Difference]: Finished difference Result 1057 states and 3015 transitions. [2025-04-13 18:37:17,902 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-04-13 18:37:17,903 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:17,903 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:17,907 INFO L225 Difference]: With dead ends: 1057 [2025-04-13 18:37:17,907 INFO L226 Difference]: Without dead ends: 1024 [2025-04-13 18:37:17,907 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=571, Invalid=2081, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 18:37:17,908 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:17,908 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 0 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2025-04-13 18:37:17,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 775. [2025-04-13 18:37:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 2.7997416020671833) internal successors, (2167), 774 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2167 transitions. [2025-04-13 18:37:17,964 INFO L79 Accepts]: Start accepts. Automaton has 775 states and 2167 transitions. Word has length 21 [2025-04-13 18:37:17,964 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:17,964 INFO L485 AbstractCegarLoop]: Abstraction has 775 states and 2167 transitions. [2025-04-13 18:37:17,964 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:17,964 INFO L278 IsEmpty]: Start isEmpty. Operand 775 states and 2167 transitions. [2025-04-13 18:37:17,966 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:17,966 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:17,966 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:17,975 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 18:37:18,166 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,SelfDestructingSolverStorable15 [2025-04-13 18:37:18,166 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 18:37:18,167 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:18,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1966454091, now seen corresponding path program 14 times [2025-04-13 18:37:18,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:18,167 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594277100] [2025-04-13 18:37:18,167 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:18,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:18,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:18,172 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:18,172 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:18,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:18,270 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 18:37:18,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:18,271 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594277100] [2025-04-13 18:37:18,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594277100] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:18,271 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157001339] [2025-04-13 18:37:18,271 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:18,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:18,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:18,273 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 18:37:18,274 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 18:37:18,299 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:18,308 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:18,309 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:18,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:18,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:37:18,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:18,417 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:37:18,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157001339] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:18,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:18,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2025-04-13 18:37:18,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306353676] [2025-04-13 18:37:18,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:18,529 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:37:18,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:18,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:37:18,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:37:18,530 INFO L87 Difference]: Start difference. First operand 775 states and 2167 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:19,113 INFO L93 Difference]: Finished difference Result 1294 states and 3592 transitions. [2025-04-13 18:37:19,114 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-04-13 18:37:19,114 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:19,114 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:19,118 INFO L225 Difference]: With dead ends: 1294 [2025-04-13 18:37:19,118 INFO L226 Difference]: Without dead ends: 1279 [2025-04-13 18:37:19,119 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=639, Invalid=2013, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 18:37:19,119 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:19,119 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2025-04-13 18:37:19,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 907. [2025-04-13 18:37:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 906 states have (on average 2.8399558498896247) internal successors, (2573), 906 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 2573 transitions. [2025-04-13 18:37:19,182 INFO L79 Accepts]: Start accepts. Automaton has 907 states and 2573 transitions. Word has length 21 [2025-04-13 18:37:19,182 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:19,182 INFO L485 AbstractCegarLoop]: Abstraction has 907 states and 2573 transitions. [2025-04-13 18:37:19,182 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:19,182 INFO L278 IsEmpty]: Start isEmpty. Operand 907 states and 2573 transitions. [2025-04-13 18:37:19,184 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:19,184 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:19,184 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:19,190 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 18:37:19,384 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,SelfDestructingSolverStorable16 [2025-04-13 18:37:19,384 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 18:37:19,385 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:19,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1225774941, now seen corresponding path program 15 times [2025-04-13 18:37:19,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:19,385 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635703920] [2025-04-13 18:37:19,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:19,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:19,387 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:19,390 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:19,390 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:37:19,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:19,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:19,483 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635703920] [2025-04-13 18:37:19,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635703920] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:19,483 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290043034] [2025-04-13 18:37:19,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:19,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:19,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:19,484 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 18:37:19,486 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 18:37:19,508 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:19,517 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:19,517 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-04-13 18:37:19,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:19,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:37:19,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:19,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:37:19,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290043034] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:19,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:19,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 24 [2025-04-13 18:37:19,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275112796] [2025-04-13 18:37:19,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:19,735 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:37:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:19,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:37:19,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:37:19,736 INFO L87 Difference]: Start difference. First operand 907 states and 2573 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:20,105 INFO L93 Difference]: Finished difference Result 1172 states and 3268 transitions. [2025-04-13 18:37:20,105 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-04-13 18:37:20,105 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:20,105 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:20,109 INFO L225 Difference]: With dead ends: 1172 [2025-04-13 18:37:20,110 INFO L226 Difference]: Without dead ends: 1159 [2025-04-13 18:37:20,110 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=339, Invalid=1067, Unknown=0, NotChecked=0, Total=1406 [2025-04-13 18:37:20,110 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:20,110 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:20,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2025-04-13 18:37:20,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 905. [2025-04-13 18:37:20,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 904 states have (on average 2.836283185840708) internal successors, (2564), 904 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 2564 transitions. [2025-04-13 18:37:20,171 INFO L79 Accepts]: Start accepts. Automaton has 905 states and 2564 transitions. Word has length 21 [2025-04-13 18:37:20,171 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:20,171 INFO L485 AbstractCegarLoop]: Abstraction has 905 states and 2564 transitions. [2025-04-13 18:37:20,171 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:20,171 INFO L278 IsEmpty]: Start isEmpty. Operand 905 states and 2564 transitions. [2025-04-13 18:37:20,173 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:20,173 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:20,173 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:20,179 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 18:37:20,377 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,SelfDestructingSolverStorable17 [2025-04-13 18:37:20,377 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 18:37:20,377 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:20,377 INFO L85 PathProgramCache]: Analyzing trace with hash -907784267, now seen corresponding path program 16 times [2025-04-13 18:37:20,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:20,377 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835933181] [2025-04-13 18:37:20,377 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:20,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:20,380 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:20,384 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-04-13 18:37:20,384 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:37:20,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:20,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:20,488 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835933181] [2025-04-13 18:37:20,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835933181] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:20,488 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966312290] [2025-04-13 18:37:20,488 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:20,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:20,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:20,489 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 18:37:20,491 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 18:37:20,515 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:20,525 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-04-13 18:37:20,525 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:37:20,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:20,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:37:20,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:20,616 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 18:37:20,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:37:20,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966312290] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:20,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:20,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 16 [2025-04-13 18:37:20,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295356520] [2025-04-13 18:37:20,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:20,677 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:37:20,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:20,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:37:20,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:37:20,678 INFO L87 Difference]: Start difference. First operand 905 states and 2564 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:21,201 INFO L93 Difference]: Finished difference Result 1727 states and 4792 transitions. [2025-04-13 18:37:21,201 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-04-13 18:37:21,202 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:21,202 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:21,209 INFO L225 Difference]: With dead ends: 1727 [2025-04-13 18:37:21,209 INFO L226 Difference]: Without dead ends: 1700 [2025-04-13 18:37:21,209 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:37:21,210 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:21,210 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:21,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2025-04-13 18:37:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1285. [2025-04-13 18:37:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 2.8348909657320873) internal successors, (3640), 1284 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 3640 transitions. [2025-04-13 18:37:21,317 INFO L79 Accepts]: Start accepts. Automaton has 1285 states and 3640 transitions. Word has length 21 [2025-04-13 18:37:21,317 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:21,317 INFO L485 AbstractCegarLoop]: Abstraction has 1285 states and 3640 transitions. [2025-04-13 18:37:21,317 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:21,317 INFO L278 IsEmpty]: Start isEmpty. Operand 1285 states and 3640 transitions. [2025-04-13 18:37:21,319 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:21,319 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:21,319 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:21,325 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 18:37:21,521 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:21,522 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 18:37:21,522 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash -519188645, now seen corresponding path program 17 times [2025-04-13 18:37:21,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:21,522 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078013567] [2025-04-13 18:37:21,522 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:37:21,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:21,529 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:37:21,531 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:21,531 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:37:21,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:37:21,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:21,601 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078013567] [2025-04-13 18:37:21,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078013567] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:21,601 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503540754] [2025-04-13 18:37:21,601 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:37:21,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:21,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:21,603 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 18:37:21,605 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 18:37:21,633 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:37:21,641 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:21,641 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:37:21,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:21,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:37:21,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:21,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:37:21,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503540754] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:21,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:21,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2025-04-13 18:37:21,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939462432] [2025-04-13 18:37:21,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:21,818 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:37:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:21,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:37:21,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:37:21,818 INFO L87 Difference]: Start difference. First operand 1285 states and 3640 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:22,462 INFO L93 Difference]: Finished difference Result 2380 states and 6853 transitions. [2025-04-13 18:37:22,462 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 18:37:22,462 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:22,462 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:22,470 INFO L225 Difference]: With dead ends: 2380 [2025-04-13 18:37:22,470 INFO L226 Difference]: Without dead ends: 2367 [2025-04-13 18:37:22,471 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=1293, Unknown=0, NotChecked=0, Total=1806 [2025-04-13 18:37:22,471 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 59 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:22,471 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 4 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2025-04-13 18:37:22,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1667. [2025-04-13 18:37:22,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 2.869747899159664) internal successors, (4781), 1666 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 4781 transitions. [2025-04-13 18:37:22,601 INFO L79 Accepts]: Start accepts. Automaton has 1667 states and 4781 transitions. Word has length 21 [2025-04-13 18:37:22,602 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:22,602 INFO L485 AbstractCegarLoop]: Abstraction has 1667 states and 4781 transitions. [2025-04-13 18:37:22,602 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:22,602 INFO L278 IsEmpty]: Start isEmpty. Operand 1667 states and 4781 transitions. [2025-04-13 18:37:22,604 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:22,604 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:22,604 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:22,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-04-13 18:37:22,805 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:22,805 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 18:37:22,805 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1818700157, now seen corresponding path program 18 times [2025-04-13 18:37:22,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:22,805 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49662763] [2025-04-13 18:37:22,805 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:37:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:22,808 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 4 equivalence classes. [2025-04-13 18:37:22,811 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:22,811 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:37:22,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:22,917 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 18:37:22,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:22,917 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49662763] [2025-04-13 18:37:22,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49662763] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:22,917 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912147855] [2025-04-13 18:37:22,917 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:37:22,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:22,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:22,919 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 18:37:22,921 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 18:37:22,943 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 4 equivalence classes. [2025-04-13 18:37:22,952 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:22,953 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:37:22,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:22,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:37:22,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:23,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912147855] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:23,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:23,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2025-04-13 18:37:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153825057] [2025-04-13 18:37:23,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:23,177 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:37:23,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:23,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:37:23,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:37:23,178 INFO L87 Difference]: Start difference. First operand 1667 states and 4781 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:24,182 INFO L93 Difference]: Finished difference Result 3000 states and 8661 transitions. [2025-04-13 18:37:24,182 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-04-13 18:37:24,182 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:24,182 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:24,193 INFO L225 Difference]: With dead ends: 3000 [2025-04-13 18:37:24,193 INFO L226 Difference]: Without dead ends: 2966 [2025-04-13 18:37:24,195 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=843, Invalid=3063, Unknown=0, NotChecked=0, Total=3906 [2025-04-13 18:37:24,195 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 164 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:24,195 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 5 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:37:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2025-04-13 18:37:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1999. [2025-04-13 18:37:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1998 states have (on average 2.829329329329329) internal successors, (5653), 1998 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 5653 transitions. [2025-04-13 18:37:24,371 INFO L79 Accepts]: Start accepts. Automaton has 1999 states and 5653 transitions. Word has length 21 [2025-04-13 18:37:24,371 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:24,371 INFO L485 AbstractCegarLoop]: Abstraction has 1999 states and 5653 transitions. [2025-04-13 18:37:24,371 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:24,371 INFO L278 IsEmpty]: Start isEmpty. Operand 1999 states and 5653 transitions. [2025-04-13 18:37:24,374 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:24,374 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:24,374 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:24,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-04-13 18:37:24,574 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:24,574 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 18:37:24,575 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash -795823473, now seen corresponding path program 19 times [2025-04-13 18:37:24,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:24,575 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326961360] [2025-04-13 18:37:24,575 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:37:24,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:24,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:37:24,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:24,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:24,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:24,670 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 18:37:24,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:24,671 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326961360] [2025-04-13 18:37:24,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326961360] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:24,671 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138565813] [2025-04-13 18:37:24,671 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:37:24,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:24,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:24,673 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 18:37:24,674 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 18:37:24,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:37:24,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:24,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:24,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:24,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:37:24,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:24,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:24,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138565813] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:24,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:24,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2025-04-13 18:37:24,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169518381] [2025-04-13 18:37:24,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:24,919 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:37:24,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:24,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:37:24,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:37:24,920 INFO L87 Difference]: Start difference. First operand 1999 states and 5653 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:26,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:26,085 INFO L93 Difference]: Finished difference Result 3298 states and 9348 transitions. [2025-04-13 18:37:26,085 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-04-13 18:37:26,085 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:26,085 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:26,093 INFO L225 Difference]: With dead ends: 3298 [2025-04-13 18:37:26,093 INFO L226 Difference]: Without dead ends: 3279 [2025-04-13 18:37:26,094 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1318, Invalid=3794, Unknown=0, NotChecked=0, Total=5112 [2025-04-13 18:37:26,096 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 160 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:26,096 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 5 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:37:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2025-04-13 18:37:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 1545. [2025-04-13 18:37:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1544 states have (on average 2.8044041450777204) internal successors, (4330), 1544 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:26,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 4330 transitions. [2025-04-13 18:37:26,286 INFO L79 Accepts]: Start accepts. Automaton has 1545 states and 4330 transitions. Word has length 21 [2025-04-13 18:37:26,287 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:26,287 INFO L485 AbstractCegarLoop]: Abstraction has 1545 states and 4330 transitions. [2025-04-13 18:37:26,287 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:26,287 INFO L278 IsEmpty]: Start isEmpty. Operand 1545 states and 4330 transitions. [2025-04-13 18:37:26,289 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:26,289 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:26,289 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:26,295 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 18:37:26,490 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:26,490 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 18:37:26,490 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1154741437, now seen corresponding path program 20 times [2025-04-13 18:37:26,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:26,490 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310834066] [2025-04-13 18:37:26,490 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:26,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:26,493 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:26,498 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:26,498 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:26,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:26,605 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 18:37:26,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:26,605 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310834066] [2025-04-13 18:37:26,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310834066] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:26,605 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694235651] [2025-04-13 18:37:26,605 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:26,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:26,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:26,607 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 18:37:26,609 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 18:37:26,634 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:26,642 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:26,642 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:26,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:26,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:37:26,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:26,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:26,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694235651] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:26,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:26,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2025-04-13 18:37:26,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368248370] [2025-04-13 18:37:26,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:26,872 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:37:26,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:26,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:37:26,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:37:26,872 INFO L87 Difference]: Start difference. First operand 1545 states and 4330 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:28,061 INFO L93 Difference]: Finished difference Result 3254 states and 9180 transitions. [2025-04-13 18:37:28,062 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-04-13 18:37:28,062 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:28,062 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:28,072 INFO L225 Difference]: With dead ends: 3254 [2025-04-13 18:37:28,072 INFO L226 Difference]: Without dead ends: 3217 [2025-04-13 18:37:28,073 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=961, Invalid=3199, Unknown=0, NotChecked=0, Total=4160 [2025-04-13 18:37:28,073 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 199 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:28,073 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 14 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:37:28,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2025-04-13 18:37:28,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1833. [2025-04-13 18:37:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 2.8122270742358078) internal successors, (5152), 1832 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 5152 transitions. [2025-04-13 18:37:28,273 INFO L79 Accepts]: Start accepts. Automaton has 1833 states and 5152 transitions. Word has length 21 [2025-04-13 18:37:28,273 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:28,273 INFO L485 AbstractCegarLoop]: Abstraction has 1833 states and 5152 transitions. [2025-04-13 18:37:28,273 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:28,273 INFO L278 IsEmpty]: Start isEmpty. Operand 1833 states and 5152 transitions. [2025-04-13 18:37:28,275 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:28,275 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:28,275 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:28,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-04-13 18:37:28,475 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:28,476 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 18:37:28,476 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1136307411, now seen corresponding path program 21 times [2025-04-13 18:37:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:28,476 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054083630] [2025-04-13 18:37:28,476 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:28,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:28,478 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:37:28,480 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:28,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:37:28,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:28,548 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 18:37:28,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:28,548 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054083630] [2025-04-13 18:37:28,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054083630] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:28,548 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557796789] [2025-04-13 18:37:28,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:28,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:28,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:28,550 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 18:37:28,551 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 18:37:28,574 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:37:28,582 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:28,583 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:37:28,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:28,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:37:28,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:28,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:28,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557796789] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:28,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:28,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2025-04-13 18:37:28,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841467454] [2025-04-13 18:37:28,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:28,814 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:37:28,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:28,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:37:28,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:37:28,814 INFO L87 Difference]: Start difference. First operand 1833 states and 5152 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:30,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:30,425 INFO L93 Difference]: Finished difference Result 3820 states and 10847 transitions. [2025-04-13 18:37:30,425 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-04-13 18:37:30,425 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:30,425 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:30,433 INFO L225 Difference]: With dead ends: 3820 [2025-04-13 18:37:30,434 INFO L226 Difference]: Without dead ends: 3805 [2025-04-13 18:37:30,435 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1599, Invalid=4721, Unknown=0, NotChecked=0, Total=6320 [2025-04-13 18:37:30,435 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 192 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:30,436 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 18 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:37:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2025-04-13 18:37:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 1961. [2025-04-13 18:37:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1960 states have (on average 2.8295918367346937) internal successors, (5546), 1960 states have internal predecessors, (5546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 5546 transitions. [2025-04-13 18:37:30,657 INFO L79 Accepts]: Start accepts. Automaton has 1961 states and 5546 transitions. Word has length 21 [2025-04-13 18:37:30,657 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:30,657 INFO L485 AbstractCegarLoop]: Abstraction has 1961 states and 5546 transitions. [2025-04-13 18:37:30,657 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:30,657 INFO L278 IsEmpty]: Start isEmpty. Operand 1961 states and 5546 transitions. [2025-04-13 18:37:30,660 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:30,660 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:30,660 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:30,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-04-13 18:37:30,860 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:30,860 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 18:37:30,861 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:30,861 INFO L85 PathProgramCache]: Analyzing trace with hash 276838235, now seen corresponding path program 22 times [2025-04-13 18:37:30,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:30,861 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251412691] [2025-04-13 18:37:30,861 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:30,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:30,863 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:30,864 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-04-13 18:37:30,864 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:37:30,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:30,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:30,907 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251412691] [2025-04-13 18:37:30,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251412691] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:30,908 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439378282] [2025-04-13 18:37:30,908 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:30,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:30,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:30,909 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 18:37:30,911 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 18:37:30,934 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:30,941 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-04-13 18:37:30,941 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:37:30,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:30,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-13 18:37:30,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:31,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439378282] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:31,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:31,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-04-13 18:37:31,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119237514] [2025-04-13 18:37:31,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:31,040 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 18:37:31,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:31,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 18:37:31,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:37:31,043 INFO L87 Difference]: Start difference. First operand 1961 states and 5546 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:31,647 INFO L93 Difference]: Finished difference Result 2730 states and 7782 transitions. [2025-04-13 18:37:31,647 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-04-13 18:37:31,647 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:31,647 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:31,654 INFO L225 Difference]: With dead ends: 2730 [2025-04-13 18:37:31,654 INFO L226 Difference]: Without dead ends: 2717 [2025-04-13 18:37:31,655 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:37:31,655 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 44 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:31,655 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 5 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:37:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2025-04-13 18:37:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2033. [2025-04-13 18:37:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2032 states have (on average 2.8484251968503935) internal successors, (5788), 2032 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 5788 transitions. [2025-04-13 18:37:31,885 INFO L79 Accepts]: Start accepts. Automaton has 2033 states and 5788 transitions. Word has length 21 [2025-04-13 18:37:31,885 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:31,885 INFO L485 AbstractCegarLoop]: Abstraction has 2033 states and 5788 transitions. [2025-04-13 18:37:31,885 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:31,885 INFO L278 IsEmpty]: Start isEmpty. Operand 2033 states and 5788 transitions. [2025-04-13 18:37:31,887 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:31,887 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:31,887 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:31,894 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 18:37:32,087 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,SelfDestructingSolverStorable24 [2025-04-13 18:37:32,088 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 18:37:32,088 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1360899901, now seen corresponding path program 23 times [2025-04-13 18:37:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:32,088 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540501823] [2025-04-13 18:37:32,088 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:37:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:32,091 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:32,093 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:32,093 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:32,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:32,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:32,185 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540501823] [2025-04-13 18:37:32,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540501823] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:32,185 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131870202] [2025-04-13 18:37:32,185 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:37:32,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:32,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:32,187 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 18:37:32,191 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 18:37:32,210 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:32,221 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:32,221 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:32,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:32,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:37:32,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:32,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:32,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131870202] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:32,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:32,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 24 [2025-04-13 18:37:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779005542] [2025-04-13 18:37:32,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:32,457 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:37:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:32,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:37:32,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:37:32,457 INFO L87 Difference]: Start difference. First operand 2033 states and 5788 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:33,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:33,380 INFO L93 Difference]: Finished difference Result 2703 states and 7650 transitions. [2025-04-13 18:37:33,380 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-04-13 18:37:33,380 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:33,380 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:33,384 INFO L225 Difference]: With dead ends: 2703 [2025-04-13 18:37:33,384 INFO L226 Difference]: Without dead ends: 2696 [2025-04-13 18:37:33,385 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=594, Invalid=1568, Unknown=0, NotChecked=0, Total=2162 [2025-04-13 18:37:33,385 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 139 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:33,385 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 16 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:33,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2025-04-13 18:37:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 2077. [2025-04-13 18:37:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 2076 states have (on average 2.850674373795761) internal successors, (5918), 2076 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 5918 transitions. [2025-04-13 18:37:33,603 INFO L79 Accepts]: Start accepts. Automaton has 2077 states and 5918 transitions. Word has length 21 [2025-04-13 18:37:33,603 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:33,603 INFO L485 AbstractCegarLoop]: Abstraction has 2077 states and 5918 transitions. [2025-04-13 18:37:33,603 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:33,603 INFO L278 IsEmpty]: Start isEmpty. Operand 2077 states and 5918 transitions. [2025-04-13 18:37:33,605 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:33,606 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:33,606 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:33,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-04-13 18:37:33,806 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,SelfDestructingSolverStorable25 [2025-04-13 18:37:33,806 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 18:37:33,806 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:33,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1422260605, now seen corresponding path program 24 times [2025-04-13 18:37:33,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:33,807 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102293273] [2025-04-13 18:37:33,807 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:37:33,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:33,809 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:37:33,811 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:33,811 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:37:33,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:33,891 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 18:37:33,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:33,892 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102293273] [2025-04-13 18:37:33,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102293273] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:33,892 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895137001] [2025-04-13 18:37:33,892 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:37:33,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:33,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:33,894 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 18:37:33,895 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 18:37:33,920 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-04-13 18:37:33,929 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:33,930 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:37:33,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:33,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:37:33,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:33,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:33,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895137001] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:34,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:34,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2025-04-13 18:37:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605680743] [2025-04-13 18:37:34,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:34,148 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-13 18:37:34,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:34,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-13 18:37:34,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2025-04-13 18:37:34,149 INFO L87 Difference]: Start difference. First operand 2077 states and 5918 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:35,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:35,364 INFO L93 Difference]: Finished difference Result 3285 states and 9400 transitions. [2025-04-13 18:37:35,365 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-04-13 18:37:35,365 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:35,365 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:35,370 INFO L225 Difference]: With dead ends: 3285 [2025-04-13 18:37:35,370 INFO L226 Difference]: Without dead ends: 3267 [2025-04-13 18:37:35,371 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=750, Invalid=2790, Unknown=0, NotChecked=0, Total=3540 [2025-04-13 18:37:35,371 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 303 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:35,372 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 0 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:37:35,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2025-04-13 18:37:35,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2101. [2025-04-13 18:37:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2101 states, 2100 states have (on average 2.8495238095238093) internal successors, (5984), 2100 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 5984 transitions. [2025-04-13 18:37:35,634 INFO L79 Accepts]: Start accepts. Automaton has 2101 states and 5984 transitions. Word has length 21 [2025-04-13 18:37:35,634 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:35,634 INFO L485 AbstractCegarLoop]: Abstraction has 2101 states and 5984 transitions. [2025-04-13 18:37:35,634 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:35,634 INFO L278 IsEmpty]: Start isEmpty. Operand 2101 states and 5984 transitions. [2025-04-13 18:37:35,637 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:35,637 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:35,637 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:35,643 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 18:37:35,837 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,SelfDestructingSolverStorable26 [2025-04-13 18:37:35,837 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 18:37:35,838 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:35,838 INFO L85 PathProgramCache]: Analyzing trace with hash 936588665, now seen corresponding path program 25 times [2025-04-13 18:37:35,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:35,838 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966365584] [2025-04-13 18:37:35,838 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:37:35,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:35,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:37:35,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:35,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:35,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:35,941 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 18:37:35,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:35,941 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966365584] [2025-04-13 18:37:35,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966365584] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:35,941 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675721545] [2025-04-13 18:37:35,941 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:37:35,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:35,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:35,944 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 18:37:35,946 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 18:37:35,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-13 18:37:35,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:35,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:35,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:35,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:37:35,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:36,073 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 18:37:36,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:36,215 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 18:37:36,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675721545] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:36,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:36,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 28 [2025-04-13 18:37:36,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414583012] [2025-04-13 18:37:36,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:36,216 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 18:37:36,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:36,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 18:37:36,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:37:36,217 INFO L87 Difference]: Start difference. First operand 2101 states and 5984 transitions. Second operand has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:37,568 INFO L93 Difference]: Finished difference Result 3175 states and 8940 transitions. [2025-04-13 18:37:37,568 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-04-13 18:37:37,568 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:37,568 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:37,572 INFO L225 Difference]: With dead ends: 3175 [2025-04-13 18:37:37,573 INFO L226 Difference]: Without dead ends: 3155 [2025-04-13 18:37:37,574 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1113, Invalid=3999, Unknown=0, NotChecked=0, Total=5112 [2025-04-13 18:37:37,574 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 170 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:37,574 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 11 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:37:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2025-04-13 18:37:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 2213. [2025-04-13 18:37:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2213 states, 2212 states have (on average 2.8354430379746836) internal successors, (6272), 2212 states have internal predecessors, (6272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 6272 transitions. [2025-04-13 18:37:37,850 INFO L79 Accepts]: Start accepts. Automaton has 2213 states and 6272 transitions. Word has length 21 [2025-04-13 18:37:37,850 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:37,850 INFO L485 AbstractCegarLoop]: Abstraction has 2213 states and 6272 transitions. [2025-04-13 18:37:37,850 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.0) internal successors, (56), 28 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:37,850 INFO L278 IsEmpty]: Start isEmpty. Operand 2213 states and 6272 transitions. [2025-04-13 18:37:37,852 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-13 18:37:37,852 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:37,852 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:37,858 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 18:37:38,052 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:38,053 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 18:37:38,053 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:38,053 INFO L85 PathProgramCache]: Analyzing trace with hash 503208821, now seen corresponding path program 26 times [2025-04-13 18:37:38,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:38,053 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725060286] [2025-04-13 18:37:38,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:38,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:38,055 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:38,057 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:38,057 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:38,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:38,116 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 18:37:38,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:38,116 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725060286] [2025-04-13 18:37:38,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725060286] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:38,116 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798350324] [2025-04-13 18:37:38,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:38,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:38,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:38,118 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 18:37:38,120 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 18:37:38,139 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-04-13 18:37:38,147 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-04-13 18:37:38,147 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:38,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:38,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-13 18:37:38,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:38,221 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 18:37:38,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:38,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798350324] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:38,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:38,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-04-13 18:37:38,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602758832] [2025-04-13 18:37:38,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:38,295 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:37:38,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:38,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:37:38,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:37:38,296 INFO L87 Difference]: Start difference. First operand 2213 states and 6272 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:39,695 INFO L93 Difference]: Finished difference Result 4150 states and 11720 transitions. [2025-04-13 18:37:39,695 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-04-13 18:37:39,695 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-13 18:37:39,696 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:39,702 INFO L225 Difference]: With dead ends: 4150 [2025-04-13 18:37:39,702 INFO L226 Difference]: Without dead ends: 4119 [2025-04-13 18:37:39,704 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=833, Invalid=2949, Unknown=0, NotChecked=0, Total=3782 [2025-04-13 18:37:39,704 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 134 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:39,705 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 10 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:37:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2025-04-13 18:37:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 2617. [2025-04-13 18:37:40,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2617 states, 2616 states have (on average 2.8440366972477062) internal successors, (7440), 2616 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 7440 transitions. [2025-04-13 18:37:40,137 INFO L79 Accepts]: Start accepts. Automaton has 2617 states and 7440 transitions. Word has length 21 [2025-04-13 18:37:40,137 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:40,137 INFO L485 AbstractCegarLoop]: Abstraction has 2617 states and 7440 transitions. [2025-04-13 18:37:40,138 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:40,138 INFO L278 IsEmpty]: Start isEmpty. Operand 2617 states and 7440 transitions. [2025-04-13 18:37:40,141 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:37:40,141 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:40,141 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:40,147 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 18:37:40,341 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,SelfDestructingSolverStorable28 [2025-04-13 18:37:40,341 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 18:37:40,342 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:40,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1811126989, now seen corresponding path program 27 times [2025-04-13 18:37:40,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:40,342 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990201525] [2025-04-13 18:37:40,342 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:40,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:40,344 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:37:40,348 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:40,348 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:37:40,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:40,438 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 18:37:40,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:40,438 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990201525] [2025-04-13 18:37:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990201525] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:40,438 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766062313] [2025-04-13 18:37:40,438 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:40,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:40,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:40,440 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 18:37:40,442 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 18:37:40,467 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:37:40,476 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:40,476 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:37:40,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:40,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:37:40,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:37:40,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766062313] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:40,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:40,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-04-13 18:37:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672177471] [2025-04-13 18:37:40,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:40,685 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:37:40,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:40,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:37:40,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:37:40,686 INFO L87 Difference]: Start difference. First operand 2617 states and 7440 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:41,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:41,602 INFO L93 Difference]: Finished difference Result 3520 states and 9907 transitions. [2025-04-13 18:37:41,602 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-13 18:37:41,602 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:37:41,602 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:41,608 INFO L225 Difference]: With dead ends: 3520 [2025-04-13 18:37:41,608 INFO L226 Difference]: Without dead ends: 3493 [2025-04-13 18:37:41,608 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=1307, Unknown=0, NotChecked=0, Total=1640 [2025-04-13 18:37:41,609 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 114 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:41,609 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 0 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:41,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2025-04-13 18:37:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 2437. [2025-04-13 18:37:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2436 states have (on average 2.852216748768473) internal successors, (6948), 2436 states have internal predecessors, (6948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:41,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 6948 transitions. [2025-04-13 18:37:41,935 INFO L79 Accepts]: Start accepts. Automaton has 2437 states and 6948 transitions. Word has length 23 [2025-04-13 18:37:41,935 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:41,935 INFO L485 AbstractCegarLoop]: Abstraction has 2437 states and 6948 transitions. [2025-04-13 18:37:41,935 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:41,935 INFO L278 IsEmpty]: Start isEmpty. Operand 2437 states and 6948 transitions. [2025-04-13 18:37:41,938 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:37:41,938 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:41,938 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:41,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-04-13 18:37:42,138 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:42,138 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 18:37:42,139 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1538815487, now seen corresponding path program 28 times [2025-04-13 18:37:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:42,139 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951606356] [2025-04-13 18:37:42,139 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:42,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:42,141 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 18:37:42,143 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:42,143 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:37:42,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:37:42,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:42,226 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951606356] [2025-04-13 18:37:42,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951606356] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:42,226 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365412697] [2025-04-13 18:37:42,226 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:42,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:42,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:42,227 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 18:37:42,229 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 18:37:42,250 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 18:37:42,260 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:42,260 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:37:42,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:42,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:37:42,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:42,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:42,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365412697] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:42,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:42,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 27 [2025-04-13 18:37:42,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120227264] [2025-04-13 18:37:42,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:42,554 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-04-13 18:37:42,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:42,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-04-13 18:37:42,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2025-04-13 18:37:42,554 INFO L87 Difference]: Start difference. First operand 2437 states and 6948 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:43,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:43,749 INFO L93 Difference]: Finished difference Result 3427 states and 9828 transitions. [2025-04-13 18:37:43,750 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-04-13 18:37:43,750 INFO L79 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:37:43,750 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:43,756 INFO L225 Difference]: With dead ends: 3427 [2025-04-13 18:37:43,756 INFO L226 Difference]: Without dead ends: 3384 [2025-04-13 18:37:43,757 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=828, Invalid=3462, Unknown=0, NotChecked=0, Total=4290 [2025-04-13 18:37:43,758 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 197 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:43,758 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 0 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:37:43,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2025-04-13 18:37:44,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 2695. [2025-04-13 18:37:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2694 states have (on average 2.848181143281366) internal successors, (7673), 2694 states have internal predecessors, (7673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 7673 transitions. [2025-04-13 18:37:44,110 INFO L79 Accepts]: Start accepts. Automaton has 2695 states and 7673 transitions. Word has length 23 [2025-04-13 18:37:44,110 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:44,110 INFO L485 AbstractCegarLoop]: Abstraction has 2695 states and 7673 transitions. [2025-04-13 18:37:44,110 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:44,110 INFO L278 IsEmpty]: Start isEmpty. Operand 2695 states and 7673 transitions. [2025-04-13 18:37:44,112 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:37:44,112 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:44,112 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:44,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-04-13 18:37:44,313 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-04-13 18:37:44,313 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 18:37:44,313 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:44,313 INFO L85 PathProgramCache]: Analyzing trace with hash 24889023, now seen corresponding path program 29 times [2025-04-13 18:37:44,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:44,313 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562084038] [2025-04-13 18:37:44,313 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:37:44,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:44,315 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:37:44,320 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:44,320 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:37:44,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:37:44,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:44,397 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562084038] [2025-04-13 18:37:44,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562084038] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:44,397 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803154279] [2025-04-13 18:37:44,397 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:37:44,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:44,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:44,398 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 18:37:44,399 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 18:37:44,419 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:37:44,427 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:44,427 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:37:44,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:44,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:37:44,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:44,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:44,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803154279] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:44,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:44,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2025-04-13 18:37:44,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137739926] [2025-04-13 18:37:44,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:44,666 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-13 18:37:44,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:44,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-13 18:37:44,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2025-04-13 18:37:44,667 INFO L87 Difference]: Start difference. First operand 2695 states and 7673 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:45,791 INFO L93 Difference]: Finished difference Result 3358 states and 9566 transitions. [2025-04-13 18:37:45,791 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-04-13 18:37:45,791 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:37:45,791 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:45,798 INFO L225 Difference]: With dead ends: 3358 [2025-04-13 18:37:45,798 INFO L226 Difference]: Without dead ends: 3343 [2025-04-13 18:37:45,799 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=535, Invalid=2221, Unknown=0, NotChecked=0, Total=2756 [2025-04-13 18:37:45,799 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 122 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:45,799 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:45,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2025-04-13 18:37:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3025. [2025-04-13 18:37:46,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3025 states, 3024 states have (on average 2.882936507936508) internal successors, (8718), 3024 states have internal predecessors, (8718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:46,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3025 states to 3025 states and 8718 transitions. [2025-04-13 18:37:46,188 INFO L79 Accepts]: Start accepts. Automaton has 3025 states and 8718 transitions. Word has length 23 [2025-04-13 18:37:46,188 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:46,188 INFO L485 AbstractCegarLoop]: Abstraction has 3025 states and 8718 transitions. [2025-04-13 18:37:46,188 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:46,189 INFO L278 IsEmpty]: Start isEmpty. Operand 3025 states and 8718 transitions. [2025-04-13 18:37:46,191 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:37:46,191 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:46,191 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:46,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-04-13 18:37:46,392 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:46,392 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 18:37:46,392 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1486974079, now seen corresponding path program 30 times [2025-04-13 18:37:46,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:46,392 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942214035] [2025-04-13 18:37:46,392 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:37:46,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:46,394 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:37:46,397 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:46,397 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:37:46,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:37:46,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:46,442 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942214035] [2025-04-13 18:37:46,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942214035] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:46,442 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494776843] [2025-04-13 18:37:46,442 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:37:46,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:46,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:46,444 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 18:37:46,445 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 18:37:46,465 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:37:46,475 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:46,475 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:37:46,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:46,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:37:46,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:37:46,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:37:46,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494776843] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:46,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:46,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2025-04-13 18:37:46,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974655880] [2025-04-13 18:37:46,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:46,571 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 18:37:46,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:46,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 18:37:46,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:37:46,572 INFO L87 Difference]: Start difference. First operand 3025 states and 8718 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:47,272 INFO L93 Difference]: Finished difference Result 3351 states and 9630 transitions. [2025-04-13 18:37:47,272 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-04-13 18:37:47,272 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:37:47,275 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:47,282 INFO L225 Difference]: With dead ends: 3351 [2025-04-13 18:37:47,282 INFO L226 Difference]: Without dead ends: 3333 [2025-04-13 18:37:47,282 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2025-04-13 18:37:47,283 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 56 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:47,283 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 10 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:37:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2025-04-13 18:37:47,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 2741. [2025-04-13 18:37:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2740 states have (on average 2.897080291970803) internal successors, (7938), 2740 states have internal predecessors, (7938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 7938 transitions. [2025-04-13 18:37:47,652 INFO L79 Accepts]: Start accepts. Automaton has 2741 states and 7938 transitions. Word has length 23 [2025-04-13 18:37:47,652 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:47,653 INFO L485 AbstractCegarLoop]: Abstraction has 2741 states and 7938 transitions. [2025-04-13 18:37:47,653 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:47,653 INFO L278 IsEmpty]: Start isEmpty. Operand 2741 states and 7938 transitions. [2025-04-13 18:37:47,655 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:37:47,655 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:47,655 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:47,663 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 18:37:47,856 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:47,856 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 18:37:47,856 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash -778531743, now seen corresponding path program 31 times [2025-04-13 18:37:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:47,856 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583878204] [2025-04-13 18:37:47,856 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:37:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:47,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 18:37:47,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:47,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:47,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:47,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:47,902 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583878204] [2025-04-13 18:37:47,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583878204] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:47,902 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264281773] [2025-04-13 18:37:47,902 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:37:47,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:47,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:47,905 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 18:37:47,905 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 18:37:47,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 18:37:47,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:47,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:37:47,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:47,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-04-13 18:37:47,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:47,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:48,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264281773] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:48,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:48,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 7] total 10 [2025-04-13 18:37:48,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415571015] [2025-04-13 18:37:48,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:48,146 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-04-13 18:37:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:48,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-04-13 18:37:48,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:37:48,147 INFO L87 Difference]: Start difference. First operand 2741 states and 7938 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 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 18:37:49,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:49,010 INFO L93 Difference]: Finished difference Result 4313 states and 12714 transitions. [2025-04-13 18:37:49,010 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 18:37:49,010 INFO L79 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 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 23 [2025-04-13 18:37:49,011 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:49,017 INFO L225 Difference]: With dead ends: 4313 [2025-04-13 18:37:49,017 INFO L226 Difference]: Without dead ends: 4279 [2025-04-13 18:37:49,018 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-04-13 18:37:49,018 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 78 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:49,018 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 18 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:37:49,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2025-04-13 18:37:49,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 4222. [2025-04-13 18:37:49,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4222 states, 4221 states have (on average 2.955460791281687) internal successors, (12475), 4221 states have internal predecessors, (12475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4222 states to 4222 states and 12475 transitions. [2025-04-13 18:37:49,634 INFO L79 Accepts]: Start accepts. Automaton has 4222 states and 12475 transitions. Word has length 23 [2025-04-13 18:37:49,634 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:49,634 INFO L485 AbstractCegarLoop]: Abstraction has 4222 states and 12475 transitions. [2025-04-13 18:37:49,635 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 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 18:37:49,635 INFO L278 IsEmpty]: Start isEmpty. Operand 4222 states and 12475 transitions. [2025-04-13 18:37:49,639 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:37:49,639 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:49,639 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:49,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-04-13 18:37:49,839 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:49,839 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 18:37:49,840 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:49,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1536001411, now seen corresponding path program 32 times [2025-04-13 18:37:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:49,840 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104627431] [2025-04-13 18:37:49,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:49,844 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-04-13 18:37:49,849 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:49,850 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:49,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:37:49,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:49,930 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104627431] [2025-04-13 18:37:49,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104627431] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:49,930 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101757143] [2025-04-13 18:37:49,930 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:37:49,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:49,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:49,932 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 18:37:49,934 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 18:37:49,954 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-04-13 18:37:49,962 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:49,962 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:37:49,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:49,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:37:49,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:37:50,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-04-13 18:37:50,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101757143] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:50,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:50,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 21 [2025-04-13 18:37:50,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539177160] [2025-04-13 18:37:50,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:50,137 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-04-13 18:37:50,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:50,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-04-13 18:37:50,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:37:50,137 INFO L87 Difference]: Start difference. First operand 4222 states and 12475 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:51,974 INFO L93 Difference]: Finished difference Result 6863 states and 20025 transitions. [2025-04-13 18:37:51,974 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-04-13 18:37:51,974 INFO L79 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:37:51,974 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:51,985 INFO L225 Difference]: With dead ends: 6863 [2025-04-13 18:37:51,985 INFO L226 Difference]: Without dead ends: 6848 [2025-04-13 18:37:51,987 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:37:51,987 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 41 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:51,987 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 6 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6848 states. [2025-04-13 18:37:52,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6848 to 4730. [2025-04-13 18:37:52,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4729 states have (on average 2.9492493127511104) internal successors, (13947), 4729 states have internal predecessors, (13947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:52,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 13947 transitions. [2025-04-13 18:37:52,739 INFO L79 Accepts]: Start accepts. Automaton has 4730 states and 13947 transitions. Word has length 23 [2025-04-13 18:37:52,739 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:52,739 INFO L485 AbstractCegarLoop]: Abstraction has 4730 states and 13947 transitions. [2025-04-13 18:37:52,739 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:52,739 INFO L278 IsEmpty]: Start isEmpty. Operand 4730 states and 13947 transitions. [2025-04-13 18:37:52,744 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:37:52,744 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:52,744 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:52,750 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 18:37:52,944 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,SelfDestructingSolverStorable34 [2025-04-13 18:37:52,944 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 18:37:52,945 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:52,945 INFO L85 PathProgramCache]: Analyzing trace with hash -969968481, now seen corresponding path program 33 times [2025-04-13 18:37:52,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:52,945 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293573232] [2025-04-13 18:37:52,945 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:52,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:52,947 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-04-13 18:37:52,953 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:52,953 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 18:37:52,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:53,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:53,048 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293573232] [2025-04-13 18:37:53,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293573232] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:53,048 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000188084] [2025-04-13 18:37:53,048 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:37:53,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:53,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:53,050 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 18:37:53,051 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 18:37:53,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-04-13 18:37:53,081 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:53,081 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-04-13 18:37:53,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:53,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:37:53,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:53,182 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:53,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000188084] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:53,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:53,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2025-04-13 18:37:53,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101509486] [2025-04-13 18:37:53,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:53,357 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 18:37:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:53,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 18:37:53,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:37:53,358 INFO L87 Difference]: Start difference. First operand 4730 states and 13947 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:56,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:37:56,119 INFO L93 Difference]: Finished difference Result 8598 states and 25044 transitions. [2025-04-13 18:37:56,119 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-13 18:37:56,119 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:37:56,119 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:37:56,133 INFO L225 Difference]: With dead ends: 8598 [2025-04-13 18:37:56,133 INFO L226 Difference]: Without dead ends: 8555 [2025-04-13 18:37:56,135 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=552, Invalid=2418, Unknown=0, NotChecked=0, Total=2970 [2025-04-13 18:37:56,135 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 156 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:37:56,135 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 5 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:37:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8555 states. [2025-04-13 18:37:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8555 to 6114. [2025-04-13 18:37:57,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 6113 states have (on average 2.9257320464583674) internal successors, (17885), 6113 states have internal predecessors, (17885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 17885 transitions. [2025-04-13 18:37:57,324 INFO L79 Accepts]: Start accepts. Automaton has 6114 states and 17885 transitions. Word has length 23 [2025-04-13 18:37:57,324 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:37:57,324 INFO L485 AbstractCegarLoop]: Abstraction has 6114 states and 17885 transitions. [2025-04-13 18:37:57,324 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:37:57,324 INFO L278 IsEmpty]: Start isEmpty. Operand 6114 states and 17885 transitions. [2025-04-13 18:37:57,329 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:37:57,329 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:37:57,329 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:37:57,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-04-13 18:37:57,529 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-04-13 18:37:57,530 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 18:37:57,530 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:37:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash -988402507, now seen corresponding path program 34 times [2025-04-13 18:37:57,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:37:57,530 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007043753] [2025-04-13 18:37:57,530 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:57,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:37:57,532 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 18:37:57,534 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:57,534 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:37:57,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:57,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:37:57,607 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007043753] [2025-04-13 18:37:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007043753] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:37:57,607 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176341150] [2025-04-13 18:37:57,608 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:37:57,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:37:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:37:57,609 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 18:37:57,610 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 18:37:57,630 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-04-13 18:37:57,638 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:37:57,638 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:37:57,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:37:57,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:37:57,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:37:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:57,732 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:37:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:37:57,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176341150] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:37:57,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:37:57,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2025-04-13 18:37:57,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963811431] [2025-04-13 18:37:57,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:37:57,897 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 18:37:57,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:37:57,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 18:37:57,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:37:57,897 INFO L87 Difference]: Start difference. First operand 6114 states and 17885 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:38:01,667 INFO L93 Difference]: Finished difference Result 11246 states and 32552 transitions. [2025-04-13 18:38:01,667 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-04-13 18:38:01,667 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:38:01,668 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:38:01,688 INFO L225 Difference]: With dead ends: 11246 [2025-04-13 18:38:01,688 INFO L226 Difference]: Without dead ends: 11231 [2025-04-13 18:38:01,690 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2410 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1397, Invalid=5083, Unknown=0, NotChecked=0, Total=6480 [2025-04-13 18:38:01,690 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 185 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:38:01,691 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 5 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:38:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11231 states. [2025-04-13 18:38:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11231 to 8704. [2025-04-13 18:38:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8704 states, 8703 states have (on average 2.9456509249684015) internal successors, (25636), 8703 states have internal predecessors, (25636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:03,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8704 states to 8704 states and 25636 transitions. [2025-04-13 18:38:03,477 INFO L79 Accepts]: Start accepts. Automaton has 8704 states and 25636 transitions. Word has length 23 [2025-04-13 18:38:03,478 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:38:03,478 INFO L485 AbstractCegarLoop]: Abstraction has 8704 states and 25636 transitions. [2025-04-13 18:38:03,478 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:03,478 INFO L278 IsEmpty]: Start isEmpty. Operand 8704 states and 25636 transitions. [2025-04-13 18:38:03,483 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:38:03,484 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:38:03,484 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:38:03,489 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 18:38:03,684 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:03,684 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 18:38:03,684 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:38:03,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1847871683, now seen corresponding path program 35 times [2025-04-13 18:38:03,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:38:03,685 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416700245] [2025-04-13 18:38:03,685 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:38:03,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:38:03,687 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:38:03,689 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:38:03,689 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:38:03,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:38:03,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:38:03,777 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416700245] [2025-04-13 18:38:03,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416700245] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:38:03,777 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462981918] [2025-04-13 18:38:03,777 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:38:03,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:03,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:38:03,779 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 18:38:03,780 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 18:38:03,805 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-04-13 18:38:03,814 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:38:03,814 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:38:03,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:03,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:38:03,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:38:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:38:03,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:38:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462981918] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:38:04,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:38:04,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 25 [2025-04-13 18:38:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858316593] [2025-04-13 18:38:04,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:38:04,053 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:38:04,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:38:04,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:38:04,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:38:04,053 INFO L87 Difference]: Start difference. First operand 8704 states and 25636 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:38:08,933 INFO L93 Difference]: Finished difference Result 15507 states and 45855 transitions. [2025-04-13 18:38:08,933 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2025-04-13 18:38:08,934 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:38:08,934 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:38:08,963 INFO L225 Difference]: With dead ends: 15507 [2025-04-13 18:38:08,963 INFO L226 Difference]: Without dead ends: 15488 [2025-04-13 18:38:08,967 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1864 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1040, Invalid=4362, Unknown=0, NotChecked=0, Total=5402 [2025-04-13 18:38:08,967 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 155 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:38:08,967 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 6 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:38:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15488 states. [2025-04-13 18:38:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15488 to 5984. [2025-04-13 18:38:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5983 states have (on average 2.977770349323082) internal successors, (17816), 5983 states have internal predecessors, (17816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 17816 transitions. [2025-04-13 18:38:10,274 INFO L79 Accepts]: Start accepts. Automaton has 5984 states and 17816 transitions. Word has length 23 [2025-04-13 18:38:10,274 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:38:10,274 INFO L485 AbstractCegarLoop]: Abstraction has 5984 states and 17816 transitions. [2025-04-13 18:38:10,274 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:10,274 INFO L278 IsEmpty]: Start isEmpty. Operand 5984 states and 17816 transitions. [2025-04-13 18:38:10,279 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:38:10,279 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:38:10,279 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:38:10,285 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 18:38:10,480 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,SelfDestructingSolverStorable37 [2025-04-13 18:38:10,480 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 18:38:10,480 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:38:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash -492315489, now seen corresponding path program 36 times [2025-04-13 18:38:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:38:10,480 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425996631] [2025-04-13 18:38:10,480 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:38:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:38:10,483 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 4 equivalence classes. [2025-04-13 18:38:10,486 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:38:10,486 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:38:10,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:10,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:38:10,568 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425996631] [2025-04-13 18:38:10,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425996631] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:38:10,568 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772438205] [2025-04-13 18:38:10,568 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:38:10,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:10,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:38:10,570 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 18:38:10,571 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 18:38:10,591 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 4 equivalence classes. [2025-04-13 18:38:10,599 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:38:10,599 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:38:10,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:10,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:38:10,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:38:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:38:10,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:38:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772438205] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:38:10,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:38:10,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 26 [2025-04-13 18:38:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541781335] [2025-04-13 18:38:10,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:38:10,866 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-04-13 18:38:10,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:38:10,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-04-13 18:38:10,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2025-04-13 18:38:10,867 INFO L87 Difference]: Start difference. First operand 5984 states and 17816 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:38:15,470 INFO L93 Difference]: Finished difference Result 10597 states and 31262 transitions. [2025-04-13 18:38:15,470 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-04-13 18:38:15,470 INFO L79 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:38:15,470 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:38:15,490 INFO L225 Difference]: With dead ends: 10597 [2025-04-13 18:38:15,491 INFO L226 Difference]: Without dead ends: 10554 [2025-04-13 18:38:15,493 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2500 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1487, Invalid=6169, Unknown=0, NotChecked=0, Total=7656 [2025-04-13 18:38:15,493 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 207 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:38:15,493 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 23 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:38:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10554 states. [2025-04-13 18:38:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10554 to 7452. [2025-04-13 18:38:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7452 states, 7451 states have (on average 2.932760703261307) internal successors, (21852), 7451 states have internal predecessors, (21852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:17,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 21852 transitions. [2025-04-13 18:38:17,076 INFO L79 Accepts]: Start accepts. Automaton has 7452 states and 21852 transitions. Word has length 23 [2025-04-13 18:38:17,076 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:38:17,076 INFO L485 AbstractCegarLoop]: Abstraction has 7452 states and 21852 transitions. [2025-04-13 18:38:17,076 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:17,077 INFO L278 IsEmpty]: Start isEmpty. Operand 7452 states and 21852 transitions. [2025-04-13 18:38:17,083 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-04-13 18:38:17,084 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:38:17,084 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:38:17,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-04-13 18:38:17,284 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,SelfDestructingSolverStorable38 [2025-04-13 18:38:17,284 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 18:38:17,284 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:38:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1370218691, now seen corresponding path program 37 times [2025-04-13 18:38:17,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:38:17,285 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970473025] [2025-04-13 18:38:17,285 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:38:17,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:38:17,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 18:38:17,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:38:17,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:38:17,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:17,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:38:17,385 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970473025] [2025-04-13 18:38:17,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970473025] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:38:17,385 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463259431] [2025-04-13 18:38:17,385 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:38:17,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:17,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:38:17,387 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 18:38:17,388 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 18:38:17,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-04-13 18:38:17,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-04-13 18:38:17,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:38:17,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:17,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-04-13 18:38:17,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:38:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:17,509 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:38:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:17,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463259431] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:38:17,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:38:17,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2025-04-13 18:38:17,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948207968] [2025-04-13 18:38:17,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:38:17,730 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-13 18:38:17,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:38:17,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-13 18:38:17,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2025-04-13 18:38:17,730 INFO L87 Difference]: Start difference. First operand 7452 states and 21852 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:23,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:38:23,002 INFO L93 Difference]: Finished difference Result 14539 states and 42923 transitions. [2025-04-13 18:38:23,002 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-04-13 18:38:23,002 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-04-13 18:38:23,002 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:38:23,028 INFO L225 Difference]: With dead ends: 14539 [2025-04-13 18:38:23,029 INFO L226 Difference]: Without dead ends: 14522 [2025-04-13 18:38:23,031 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1723 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1150, Invalid=4550, Unknown=0, NotChecked=0, Total=5700 [2025-04-13 18:38:23,032 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 138 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:38:23,032 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 16 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:38:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14522 states. [2025-04-13 18:38:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14522 to 9078. [2025-04-13 18:38:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9078 states, 9077 states have (on average 2.9482207777900187) internal successors, (26761), 9077 states have internal predecessors, (26761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9078 states to 9078 states and 26761 transitions. [2025-04-13 18:38:24,933 INFO L79 Accepts]: Start accepts. Automaton has 9078 states and 26761 transitions. Word has length 23 [2025-04-13 18:38:24,934 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:38:24,934 INFO L485 AbstractCegarLoop]: Abstraction has 9078 states and 26761 transitions. [2025-04-13 18:38:24,934 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:24,934 INFO L278 IsEmpty]: Start isEmpty. Operand 9078 states and 26761 transitions. [2025-04-13 18:38:24,942 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:38:24,942 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:38:24,943 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:38:24,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-04-13 18:38:25,143 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,SelfDestructingSolverStorable39 [2025-04-13 18:38:25,143 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 18:38:25,143 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:38:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash -597051776, now seen corresponding path program 38 times [2025-04-13 18:38:25,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:38:25,144 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846451294] [2025-04-13 18:38:25,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:38:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:38:25,146 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:38:25,148 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:38:25,148 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:38:25,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:25,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:38:25,238 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846451294] [2025-04-13 18:38:25,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846451294] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:38:25,238 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441897749] [2025-04-13 18:38:25,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:38:25,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:25,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:38:25,240 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:38:25,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-04-13 18:38:25,262 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:38:25,270 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:38:25,270 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:38:25,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:25,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:38:25,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:38:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:25,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:38:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:38:25,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441897749] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:38:25,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:38:25,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 34 [2025-04-13 18:38:25,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49980515] [2025-04-13 18:38:25,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:38:25,577 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-04-13 18:38:25,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:38:25,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-04-13 18:38:25,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:38:25,577 INFO L87 Difference]: Start difference. First operand 9078 states and 26761 transitions. Second operand has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:29,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:38:29,426 INFO L93 Difference]: Finished difference Result 11274 states and 33146 transitions. [2025-04-13 18:38:29,426 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-04-13 18:38:29,426 INFO L79 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:38:29,426 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:38:29,448 INFO L225 Difference]: With dead ends: 11274 [2025-04-13 18:38:29,448 INFO L226 Difference]: Without dead ends: 11213 [2025-04-13 18:38:29,451 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1513, Invalid=5797, Unknown=0, NotChecked=0, Total=7310 [2025-04-13 18:38:29,451 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 265 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:38:29,451 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 0 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:38:29,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11213 states. [2025-04-13 18:38:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11213 to 10128. [2025-04-13 18:38:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10128 states, 10127 states have (on average 2.9310753431420955) internal successors, (29683), 10127 states have internal predecessors, (29683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10128 states to 10128 states and 29683 transitions. [2025-04-13 18:38:31,508 INFO L79 Accepts]: Start accepts. Automaton has 10128 states and 29683 transitions. Word has length 25 [2025-04-13 18:38:31,508 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:38:31,508 INFO L485 AbstractCegarLoop]: Abstraction has 10128 states and 29683 transitions. [2025-04-13 18:38:31,508 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 34 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:31,508 INFO L278 IsEmpty]: Start isEmpty. Operand 10128 states and 29683 transitions. [2025-04-13 18:38:31,516 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:38:31,516 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:38:31,517 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:38:31,522 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 18:38:31,717 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:31,717 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 18:38:31,717 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:38:31,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1054474058, now seen corresponding path program 39 times [2025-04-13 18:38:31,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:38:31,717 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629327458] [2025-04-13 18:38:31,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:38:31,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:38:31,720 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:38:31,724 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:38:31,724 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:38:31,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:31,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:38:31,819 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629327458] [2025-04-13 18:38:31,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629327458] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:38:31,819 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170338477] [2025-04-13 18:38:31,819 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:38:31,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:31,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:38:31,821 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 18:38:31,821 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 18:38:31,842 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:38:31,850 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:38:31,850 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-13 18:38:31,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:31,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:38:31,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:38:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:31,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:38:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:32,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170338477] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:38:32,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:38:32,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 33 [2025-04-13 18:38:32,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966086349] [2025-04-13 18:38:32,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:38:32,160 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 18:38:32,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:38:32,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 18:38:32,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:38:32,161 INFO L87 Difference]: Start difference. First operand 10128 states and 29683 transitions. Second operand has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:36,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:38:36,590 INFO L93 Difference]: Finished difference Result 14155 states and 41406 transitions. [2025-04-13 18:38:36,591 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-04-13 18:38:36,591 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:38:36,591 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:38:36,616 INFO L225 Difference]: With dead ends: 14155 [2025-04-13 18:38:36,616 INFO L226 Difference]: Without dead ends: 14136 [2025-04-13 18:38:36,619 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2518 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1650, Invalid=5490, Unknown=0, NotChecked=0, Total=7140 [2025-04-13 18:38:36,620 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 218 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:38:36,620 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 0 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:38:36,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14136 states. [2025-04-13 18:38:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14136 to 12510. [2025-04-13 18:38:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12510 states, 12509 states have (on average 2.939323686945399) internal successors, (36768), 12509 states have internal predecessors, (36768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12510 states to 12510 states and 36768 transitions. [2025-04-13 18:38:39,156 INFO L79 Accepts]: Start accepts. Automaton has 12510 states and 36768 transitions. Word has length 25 [2025-04-13 18:38:39,156 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:38:39,156 INFO L485 AbstractCegarLoop]: Abstraction has 12510 states and 36768 transitions. [2025-04-13 18:38:39,156 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:39,156 INFO L278 IsEmpty]: Start isEmpty. Operand 12510 states and 36768 transitions. [2025-04-13 18:38:39,164 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:38:39,164 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:38:39,165 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:38:39,170 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 18:38:39,365 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:39,365 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 18:38:39,365 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:38:39,365 INFO L85 PathProgramCache]: Analyzing trace with hash -87947558, now seen corresponding path program 40 times [2025-04-13 18:38:39,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:38:39,365 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191173620] [2025-04-13 18:38:39,365 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:38:39,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:38:39,367 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:38:39,373 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 24 of 25 statements. [2025-04-13 18:38:39,373 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:38:39,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:38:39,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:38:39,449 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191173620] [2025-04-13 18:38:39,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191173620] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:38:39,449 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204568262] [2025-04-13 18:38:39,449 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:38:39,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:39,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:38:39,451 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 18:38:39,453 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 18:38:39,474 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:38:39,480 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 24 of 25 statements. [2025-04-13 18:38:39,480 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:38:39,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:39,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:38:39,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:38:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:39,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:38:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:38:39,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204568262] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:38:39,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:38:39,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2025-04-13 18:38:39,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030589097] [2025-04-13 18:38:39,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:38:39,738 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-04-13 18:38:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:38:39,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-04-13 18:38:39,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2025-04-13 18:38:39,738 INFO L87 Difference]: Start difference. First operand 12510 states and 36768 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:38:44,099 INFO L93 Difference]: Finished difference Result 18235 states and 53758 transitions. [2025-04-13 18:38:44,099 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-04-13 18:38:44,100 INFO L79 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:38:44,100 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:38:44,133 INFO L225 Difference]: With dead ends: 18235 [2025-04-13 18:38:44,133 INFO L226 Difference]: Without dead ends: 18222 [2025-04-13 18:38:44,137 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=554, Invalid=1996, Unknown=0, NotChecked=0, Total=2550 [2025-04-13 18:38:44,137 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 74 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:38:44,137 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 0 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:38:44,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18222 states. [2025-04-13 18:38:46,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18222 to 12906. [2025-04-13 18:38:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12906 states, 12905 states have (on average 2.9368461836497484) internal successors, (37900), 12905 states have internal predecessors, (37900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12906 states to 12906 states and 37900 transitions. [2025-04-13 18:38:46,805 INFO L79 Accepts]: Start accepts. Automaton has 12906 states and 37900 transitions. Word has length 25 [2025-04-13 18:38:46,805 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:38:46,805 INFO L485 AbstractCegarLoop]: Abstraction has 12906 states and 37900 transitions. [2025-04-13 18:38:46,805 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:46,805 INFO L278 IsEmpty]: Start isEmpty. Operand 12906 states and 37900 transitions. [2025-04-13 18:38:46,816 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:38:46,816 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:38:46,816 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:38:46,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2025-04-13 18:38:47,016 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,SelfDestructingSolverStorable42 [2025-04-13 18:38:47,017 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 18:38:47,017 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:38:47,017 INFO L85 PathProgramCache]: Analyzing trace with hash 292204126, now seen corresponding path program 41 times [2025-04-13 18:38:47,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:38:47,017 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875371019] [2025-04-13 18:38:47,017 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:38:47,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:38:47,019 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 5 equivalence classes. [2025-04-13 18:38:47,022 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:38:47,022 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 18:38:47,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:38:47,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:38:47,107 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875371019] [2025-04-13 18:38:47,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875371019] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:38:47,107 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476042042] [2025-04-13 18:38:47,107 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:38:47,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:47,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:38:47,109 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 18:38:47,110 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 18:38:47,130 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 5 equivalence classes. [2025-04-13 18:38:47,138 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:38:47,138 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 18:38:47,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:47,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:38:47,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:38:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:47,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:38:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:38:47,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476042042] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:38:47,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:38:47,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 30 [2025-04-13 18:38:47,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843968790] [2025-04-13 18:38:47,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:38:47,413 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 18:38:47,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:38:47,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 18:38:47,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:38:47,413 INFO L87 Difference]: Start difference. First operand 12906 states and 37900 transitions. Second operand has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:38:53,767 INFO L93 Difference]: Finished difference Result 18319 states and 54018 transitions. [2025-04-13 18:38:53,767 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-04-13 18:38:53,767 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:38:53,767 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:38:53,802 INFO L225 Difference]: With dead ends: 18319 [2025-04-13 18:38:53,802 INFO L226 Difference]: Without dead ends: 18243 [2025-04-13 18:38:53,806 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2025 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1631, Invalid=4849, Unknown=0, NotChecked=0, Total=6480 [2025-04-13 18:38:53,806 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 209 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:38:53,806 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 4 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:38:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18243 states. [2025-04-13 18:38:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18243 to 13602. [2025-04-13 18:38:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13602 states, 13601 states have (on average 2.9309609587530328) internal successors, (39864), 13601 states have internal predecessors, (39864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13602 states to 13602 states and 39864 transitions. [2025-04-13 18:38:56,862 INFO L79 Accepts]: Start accepts. Automaton has 13602 states and 39864 transitions. Word has length 25 [2025-04-13 18:38:56,862 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:38:56,862 INFO L485 AbstractCegarLoop]: Abstraction has 13602 states and 39864 transitions. [2025-04-13 18:38:56,863 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.9) internal successors, (57), 30 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:38:56,863 INFO L278 IsEmpty]: Start isEmpty. Operand 13602 states and 39864 transitions. [2025-04-13 18:38:56,873 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:38:56,873 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:38:56,873 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:38:56,878 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 18:38:57,073 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,SelfDestructingSolverStorable43 [2025-04-13 18:38:57,073 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 18:38:57,074 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:38:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1972647792, now seen corresponding path program 42 times [2025-04-13 18:38:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:38:57,074 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105339824] [2025-04-13 18:38:57,074 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:38:57,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:38:57,076 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 4 equivalence classes. [2025-04-13 18:38:57,082 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:38:57,082 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:38:57,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:57,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:38:57,182 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105339824] [2025-04-13 18:38:57,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105339824] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:38:57,182 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537668454] [2025-04-13 18:38:57,182 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:38:57,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:38:57,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:38:57,184 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 18:38:57,184 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 18:38:57,205 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 4 equivalence classes. [2025-04-13 18:38:57,214 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:38:57,214 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-04-13 18:38:57,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:38:57,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:38:57,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:38:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:38:57,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:38:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:38:57,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537668454] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:38:57,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:38:57,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 32 [2025-04-13 18:38:57,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127304201] [2025-04-13 18:38:57,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:38:57,460 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-13 18:38:57,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:38:57,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-13 18:38:57,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:38:57,461 INFO L87 Difference]: Start difference. First operand 13602 states and 39864 transitions. Second operand has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:04,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:39:04,725 INFO L93 Difference]: Finished difference Result 18442 states and 54327 transitions. [2025-04-13 18:39:04,725 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-04-13 18:39:04,726 INFO L79 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:39:04,726 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:39:04,761 INFO L225 Difference]: With dead ends: 18442 [2025-04-13 18:39:04,761 INFO L226 Difference]: Without dead ends: 18423 [2025-04-13 18:39:04,765 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2205, Invalid=6915, Unknown=0, NotChecked=0, Total=9120 [2025-04-13 18:39:04,765 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 160 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:39:04,765 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 5 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:39:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18423 states. [2025-04-13 18:39:07,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18423 to 13778. [2025-04-13 18:39:07,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13778 states, 13777 states have (on average 2.939972417797779) internal successors, (40504), 13777 states have internal predecessors, (40504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:07,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13778 states to 13778 states and 40504 transitions. [2025-04-13 18:39:07,711 INFO L79 Accepts]: Start accepts. Automaton has 13778 states and 40504 transitions. Word has length 25 [2025-04-13 18:39:07,711 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:39:07,711 INFO L485 AbstractCegarLoop]: Abstraction has 13778 states and 40504 transitions. [2025-04-13 18:39:07,711 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:07,711 INFO L278 IsEmpty]: Start isEmpty. Operand 13778 states and 40504 transitions. [2025-04-13 18:39:07,723 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:39:07,723 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:39:07,723 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:39:07,730 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 18:39:07,924 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,SelfDestructingSolverStorable44 [2025-04-13 18:39:07,924 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 18:39:07,924 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:39:07,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2068715486, now seen corresponding path program 43 times [2025-04-13 18:39:07,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:39:07,925 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272888869] [2025-04-13 18:39:07,925 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:39:07,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:39:07,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-13 18:39:07,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:39:07,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:39:07,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:39:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:08,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:39:08,083 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272888869] [2025-04-13 18:39:08,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272888869] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:39:08,083 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227208552] [2025-04-13 18:39:08,083 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:39:08,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:39:08,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:39:08,087 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 18:39:08,089 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 18:39:08,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-13 18:39:08,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:39:08,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:39:08,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:39:08,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 18:39:08,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:39:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:08,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:39:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:08,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227208552] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:39:08,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:39:08,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 37 [2025-04-13 18:39:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633301846] [2025-04-13 18:39:08,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:39:08,424 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 18:39:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:39:08,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 18:39:08,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:39:08,425 INFO L87 Difference]: Start difference. First operand 13778 states and 40504 transitions. Second operand has 37 states, 37 states have (on average 1.837837837837838) internal successors, (68), 37 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:15,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:39:15,925 INFO L93 Difference]: Finished difference Result 16982 states and 49608 transitions. [2025-04-13 18:39:15,925 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2025-04-13 18:39:15,925 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.837837837837838) internal successors, (68), 37 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:39:15,925 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:39:15,959 INFO L225 Difference]: With dead ends: 16982 [2025-04-13 18:39:15,959 INFO L226 Difference]: Without dead ends: 16915 [2025-04-13 18:39:15,963 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4243 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2500, Invalid=9490, Unknown=0, NotChecked=0, Total=11990 [2025-04-13 18:39:15,963 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 203 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:39:15,964 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 4 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:39:15,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16915 states. [2025-04-13 18:39:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16915 to 12700. [2025-04-13 18:39:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12700 states, 12699 states have (on average 2.9409402315142925) internal successors, (37347), 12699 states have internal predecessors, (37347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12700 states to 12700 states and 37347 transitions. [2025-04-13 18:39:18,610 INFO L79 Accepts]: Start accepts. Automaton has 12700 states and 37347 transitions. Word has length 25 [2025-04-13 18:39:18,611 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:39:18,611 INFO L485 AbstractCegarLoop]: Abstraction has 12700 states and 37347 transitions. [2025-04-13 18:39:18,611 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.837837837837838) internal successors, (68), 37 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:18,611 INFO L278 IsEmpty]: Start isEmpty. Operand 12700 states and 37347 transitions. [2025-04-13 18:39:18,621 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:39:18,621 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:39:18,621 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:39:18,627 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 18:39:18,822 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-04-13 18:39:18,822 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 18:39:18,822 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:39:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash 238923956, now seen corresponding path program 44 times [2025-04-13 18:39:18,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:39:18,822 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163967367] [2025-04-13 18:39:18,822 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:39:18,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:39:18,824 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:39:18,826 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:39:18,826 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:39:18,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:39:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:18,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:39:18,921 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163967367] [2025-04-13 18:39:18,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163967367] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:39:18,921 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818876087] [2025-04-13 18:39:18,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:39:18,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:39:18,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:39:18,923 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 18:39:18,924 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 18:39:18,945 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:39:18,955 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:39:18,955 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:39:18,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:39:18,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:39:18,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:39:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:19,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:39:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:19,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818876087] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:39:19,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:39:19,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 33 [2025-04-13 18:39:19,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932767011] [2025-04-13 18:39:19,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:39:19,289 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 18:39:19,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:39:19,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 18:39:19,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=763, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:39:19,289 INFO L87 Difference]: Start difference. First operand 12700 states and 37347 transitions. Second operand has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:39:25,901 INFO L93 Difference]: Finished difference Result 16009 states and 47169 transitions. [2025-04-13 18:39:25,901 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-04-13 18:39:25,902 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:39:25,902 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:39:25,936 INFO L225 Difference]: With dead ends: 16009 [2025-04-13 18:39:25,936 INFO L226 Difference]: Without dead ends: 15996 [2025-04-13 18:39:25,940 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2032 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1442, Invalid=4410, Unknown=0, NotChecked=0, Total=5852 [2025-04-13 18:39:25,941 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 139 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:39:25,941 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 5 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:39:25,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15996 states. [2025-04-13 18:39:28,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15996 to 11874. [2025-04-13 18:39:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11874 states, 11873 states have (on average 2.935231196833151) internal successors, (34850), 11873 states have internal predecessors, (34850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11874 states to 11874 states and 34850 transitions. [2025-04-13 18:39:28,382 INFO L79 Accepts]: Start accepts. Automaton has 11874 states and 34850 transitions. Word has length 25 [2025-04-13 18:39:28,382 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:39:28,382 INFO L485 AbstractCegarLoop]: Abstraction has 11874 states and 34850 transitions. [2025-04-13 18:39:28,382 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:28,382 INFO L278 IsEmpty]: Start isEmpty. Operand 11874 states and 34850 transitions. [2025-04-13 18:39:28,398 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:39:28,398 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:39:28,398 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:39:28,406 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 18:39:28,598 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:39:28,598 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 18:39:28,599 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:39:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2006732684, now seen corresponding path program 45 times [2025-04-13 18:39:28,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:39:28,599 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590978250] [2025-04-13 18:39:28,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:39:28,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:39:28,601 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 5 equivalence classes. [2025-04-13 18:39:28,604 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:39:28,604 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-04-13 18:39:28,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:39:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:39:28,676 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590978250] [2025-04-13 18:39:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590978250] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:39:28,676 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715663373] [2025-04-13 18:39:28,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:39:28,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:39:28,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:39:28,678 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 18:39:28,679 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 18:39:28,699 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 5 equivalence classes. [2025-04-13 18:39:28,708 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:39:28,709 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-04-13 18:39:28,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:39:28,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 18:39:28,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:39:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:28,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:39:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:39:29,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715663373] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:39:29,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:39:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2025-04-13 18:39:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029959079] [2025-04-13 18:39:29,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:39:29,012 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:39:29,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:39:29,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:39:29,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:39:29,012 INFO L87 Difference]: Start difference. First operand 11874 states and 34850 transitions. Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:39:36,333 INFO L93 Difference]: Finished difference Result 15042 states and 43740 transitions. [2025-04-13 18:39:36,333 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-04-13 18:39:36,333 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:39:36,333 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:39:36,363 INFO L225 Difference]: With dead ends: 15042 [2025-04-13 18:39:36,363 INFO L226 Difference]: Without dead ends: 14994 [2025-04-13 18:39:36,367 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1290, Invalid=5352, Unknown=0, NotChecked=0, Total=6642 [2025-04-13 18:39:36,368 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 189 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:39:36,368 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 4 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:39:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14994 states. [2025-04-13 18:39:39,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14994 to 11454. [2025-04-13 18:39:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11454 states, 11453 states have (on average 2.929712739020344) internal successors, (33554), 11453 states have internal predecessors, (33554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11454 states to 11454 states and 33554 transitions. [2025-04-13 18:39:39,189 INFO L79 Accepts]: Start accepts. Automaton has 11454 states and 33554 transitions. Word has length 25 [2025-04-13 18:39:39,189 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:39:39,189 INFO L485 AbstractCegarLoop]: Abstraction has 11454 states and 33554 transitions. [2025-04-13 18:39:39,189 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:39,189 INFO L278 IsEmpty]: Start isEmpty. Operand 11454 states and 33554 transitions. [2025-04-13 18:39:39,196 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:39:39,196 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:39:39,196 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:39:39,203 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 18:39:39,397 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,SelfDestructingSolverStorable47 [2025-04-13 18:39:39,397 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 18:39:39,397 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:39:39,397 INFO L85 PathProgramCache]: Analyzing trace with hash 67099038, now seen corresponding path program 46 times [2025-04-13 18:39:39,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:39:39,397 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71512677] [2025-04-13 18:39:39,397 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:39:39,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:39:39,399 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:39:39,401 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 24 of 25 statements. [2025-04-13 18:39:39,401 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:39:39,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:39:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:39:39,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:39:39,459 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71512677] [2025-04-13 18:39:39,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71512677] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:39:39,459 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889976313] [2025-04-13 18:39:39,459 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:39:39,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:39:39,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:39:39,461 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 18:39:39,461 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 18:39:39,482 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:39:39,488 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 24 of 25 statements. [2025-04-13 18:39:39,488 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:39:39,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:39:39,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:39:39,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:39:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:39,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:39:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:39:39,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889976313] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:39:39,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:39:39,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-04-13 18:39:39,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569143781] [2025-04-13 18:39:39,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:39:39,652 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:39:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:39:39,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:39:39,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:39:39,653 INFO L87 Difference]: Start difference. First operand 11454 states and 33554 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:47,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:39:47,624 INFO L93 Difference]: Finished difference Result 13357 states and 38811 transitions. [2025-04-13 18:39:47,624 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-04-13 18:39:47,624 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:39:47,624 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:39:47,652 INFO L225 Difference]: With dead ends: 13357 [2025-04-13 18:39:47,652 INFO L226 Difference]: Without dead ends: 13318 [2025-04-13 18:39:47,656 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=676, Invalid=1976, Unknown=0, NotChecked=0, Total=2652 [2025-04-13 18:39:47,657 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 102 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:39:47,657 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 6 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:39:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13318 states. [2025-04-13 18:39:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13318 to 11740. [2025-04-13 18:39:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11740 states, 11739 states have (on average 2.925206576369367) internal successors, (34339), 11739 states have internal predecessors, (34339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:50,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11740 states to 11740 states and 34339 transitions. [2025-04-13 18:39:50,670 INFO L79 Accepts]: Start accepts. Automaton has 11740 states and 34339 transitions. Word has length 25 [2025-04-13 18:39:50,670 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:39:50,670 INFO L485 AbstractCegarLoop]: Abstraction has 11740 states and 34339 transitions. [2025-04-13 18:39:50,670 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:39:50,670 INFO L278 IsEmpty]: Start isEmpty. Operand 11740 states and 34339 transitions. [2025-04-13 18:39:50,678 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:39:50,678 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:39:50,678 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:39:50,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2025-04-13 18:39:50,878 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,SelfDestructingSolverStorable48 [2025-04-13 18:39:50,879 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 18:39:50,879 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:39:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1723190860, now seen corresponding path program 47 times [2025-04-13 18:39:50,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:39:50,879 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758504073] [2025-04-13 18:39:50,879 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:39:50,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:39:50,881 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 4 equivalence classes. [2025-04-13 18:39:50,884 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:39:50,884 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:39:50,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:39:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:39:50,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:39:50,985 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758504073] [2025-04-13 18:39:50,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758504073] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:39:50,985 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691673123] [2025-04-13 18:39:50,985 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:39:50,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:39:50,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:39:50,987 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 18:39:50,989 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 18:39:51,014 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 4 equivalence classes. [2025-04-13 18:39:51,024 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:39:51,024 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-04-13 18:39:51,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:39:51,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:39:51,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:39:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:51,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:39:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:39:51,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691673123] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:39:51,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:39:51,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 29 [2025-04-13 18:39:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135992445] [2025-04-13 18:39:51,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:39:51,275 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-04-13 18:39:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:39:51,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-04-13 18:39:51,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2025-04-13 18:39:51,276 INFO L87 Difference]: Start difference. First operand 11740 states and 34339 transitions. Second operand has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:40:03,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:40:03,917 INFO L93 Difference]: Finished difference Result 18832 states and 55451 transitions. [2025-04-13 18:40:03,917 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2025-04-13 18:40:03,917 INFO L79 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:40:03,917 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:40:03,951 INFO L225 Difference]: With dead ends: 18832 [2025-04-13 18:40:03,952 INFO L226 Difference]: Without dead ends: 18813 [2025-04-13 18:40:03,956 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4135 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3618, Invalid=8814, Unknown=0, NotChecked=0, Total=12432 [2025-04-13 18:40:03,956 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 156 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:40:03,956 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 11 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:40:03,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18813 states. [2025-04-13 18:40:07,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18813 to 12954. [2025-04-13 18:40:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12954 states, 12953 states have (on average 2.933220103450938) internal successors, (37994), 12953 states have internal predecessors, (37994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:40:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12954 states to 12954 states and 37994 transitions. [2025-04-13 18:40:07,543 INFO L79 Accepts]: Start accepts. Automaton has 12954 states and 37994 transitions. Word has length 25 [2025-04-13 18:40:07,544 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:40:07,544 INFO L485 AbstractCegarLoop]: Abstraction has 12954 states and 37994 transitions. [2025-04-13 18:40:07,544 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 29 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:40:07,544 INFO L278 IsEmpty]: Start isEmpty. Operand 12954 states and 37994 transitions. [2025-04-13 18:40:07,552 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:40:07,553 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:40:07,553 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:40:07,559 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 18:40:07,753 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,SelfDestructingSolverStorable49 [2025-04-13 18:40:07,753 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 18:40:07,753 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:40:07,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1890312780, now seen corresponding path program 48 times [2025-04-13 18:40:07,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:40:07,754 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435120467] [2025-04-13 18:40:07,754 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:40:07,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:40:07,756 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:40:07,758 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:40:07,758 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:40:07,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:40:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:40:07,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:40:07,857 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435120467] [2025-04-13 18:40:07,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435120467] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:40:07,858 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022197279] [2025-04-13 18:40:07,858 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:40:07,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:40:07,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:40:07,859 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 18:40:07,861 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 18:40:07,884 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:40:07,894 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:40:07,894 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:40:07,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:40:07,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 18:40:07,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:40:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:40:08,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:40:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-04-13 18:40:08,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022197279] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:40:08,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:40:08,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 31 [2025-04-13 18:40:08,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187949313] [2025-04-13 18:40:08,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:40:08,145 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:40:08,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:40:08,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:40:08,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:40:08,145 INFO L87 Difference]: Start difference. First operand 12954 states and 37994 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:40:18,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:40:18,743 INFO L93 Difference]: Finished difference Result 16792 states and 49147 transitions. [2025-04-13 18:40:18,744 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2025-04-13 18:40:18,744 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:40:18,744 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:40:18,778 INFO L225 Difference]: With dead ends: 16792 [2025-04-13 18:40:18,778 INFO L226 Difference]: Without dead ends: 16759 [2025-04-13 18:40:18,782 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2402, Invalid=8310, Unknown=0, NotChecked=0, Total=10712 [2025-04-13 18:40:18,783 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 185 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:40:18,783 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 18 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:40:18,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2025-04-13 18:40:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 12906. [2025-04-13 18:40:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12906 states, 12905 states have (on average 2.929562185199535) internal successors, (37806), 12905 states have internal predecessors, (37806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:40:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12906 states to 12906 states and 37806 transitions. [2025-04-13 18:40:22,561 INFO L79 Accepts]: Start accepts. Automaton has 12906 states and 37806 transitions. Word has length 25 [2025-04-13 18:40:22,561 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:40:22,561 INFO L485 AbstractCegarLoop]: Abstraction has 12906 states and 37806 transitions. [2025-04-13 18:40:22,561 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:40:22,561 INFO L278 IsEmpty]: Start isEmpty. Operand 12906 states and 37806 transitions. [2025-04-13 18:40:22,570 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:40:22,570 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:40:22,570 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:40:22,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2025-04-13 18:40:22,771 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:40:22,771 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 18:40:22,771 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:40:22,771 INFO L85 PathProgramCache]: Analyzing trace with hash 576203256, now seen corresponding path program 49 times [2025-04-13 18:40:22,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:40:22,771 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093219337] [2025-04-13 18:40:22,771 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:40:22,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:40:22,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-13 18:40:22,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:40:22,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:40:22,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:40:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:40:22,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:40:22,898 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093219337] [2025-04-13 18:40:22,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093219337] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:40:22,898 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536630261] [2025-04-13 18:40:22,899 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:40:22,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:40:22,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:40:22,900 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 18:40:22,902 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 18:40:22,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-13 18:40:22,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:40:22,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:40:22,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:40:22,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:40:22,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:40:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:40:23,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:40:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:40:23,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536630261] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:40:23,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:40:23,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 32 [2025-04-13 18:40:23,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394813417] [2025-04-13 18:40:23,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:40:23,186 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-13 18:40:23,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:40:23,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-13 18:40:23,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:40:23,187 INFO L87 Difference]: Start difference. First operand 12906 states and 37806 transitions. Second operand has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:40:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:40:40,207 INFO L93 Difference]: Finished difference Result 24659 states and 72710 transitions. [2025-04-13 18:40:40,207 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-04-13 18:40:40,208 INFO L79 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:40:40,208 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:40:40,262 INFO L225 Difference]: With dead ends: 24659 [2025-04-13 18:40:40,262 INFO L226 Difference]: Without dead ends: 24646 [2025-04-13 18:40:40,269 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1924 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1573, Invalid=4589, Unknown=0, NotChecked=0, Total=6162 [2025-04-13 18:40:40,270 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 126 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:40:40,270 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 23 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:40:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24646 states. [2025-04-13 18:40:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24646 to 16488. [2025-04-13 18:40:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16488 states, 16487 states have (on average 2.967368229514163) internal successors, (48923), 16487 states have internal predecessors, (48923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:40:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16488 states to 16488 states and 48923 transitions. [2025-04-13 18:40:45,109 INFO L79 Accepts]: Start accepts. Automaton has 16488 states and 48923 transitions. Word has length 25 [2025-04-13 18:40:45,109 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:40:45,109 INFO L485 AbstractCegarLoop]: Abstraction has 16488 states and 48923 transitions. [2025-04-13 18:40:45,109 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.9375) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:40:45,109 INFO L278 IsEmpty]: Start isEmpty. Operand 16488 states and 48923 transitions. [2025-04-13 18:40:45,120 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:40:45,120 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:40:45,121 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:40:45,126 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 18:40:45,321 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:40:45,321 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 18:40:45,321 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:40:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash 908886494, now seen corresponding path program 50 times [2025-04-13 18:40:45,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:40:45,321 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075012847] [2025-04-13 18:40:45,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:40:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:40:45,324 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:40:45,326 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:40:45,326 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:40:45,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:40:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:40:45,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:40:45,464 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075012847] [2025-04-13 18:40:45,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075012847] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:40:45,464 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104022423] [2025-04-13 18:40:45,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:40:45,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:40:45,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:40:45,466 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 18:40:45,466 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 18:40:45,488 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:40:45,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:40:45,496 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:40:45,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:40:45,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 18:40:45,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:40:45,624 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:40:45,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:40:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:40:45,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104022423] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:40:45,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:40:45,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 35 [2025-04-13 18:40:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079761901] [2025-04-13 18:40:45,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:40:45,794 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-04-13 18:40:45,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:40:45,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-04-13 18:40:45,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2025-04-13 18:40:45,795 INFO L87 Difference]: Start difference. First operand 16488 states and 48923 transitions. Second operand has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:40:58,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:40:58,557 INFO L93 Difference]: Finished difference Result 20184 states and 59645 transitions. [2025-04-13 18:40:58,558 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2025-04-13 18:40:58,558 INFO L79 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:40:58,558 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:40:58,601 INFO L225 Difference]: With dead ends: 20184 [2025-04-13 18:40:58,601 INFO L226 Difference]: Without dead ends: 20160 [2025-04-13 18:40:58,606 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3808 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2368, Invalid=7934, Unknown=0, NotChecked=0, Total=10302 [2025-04-13 18:40:58,606 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 265 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:40:58,606 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 16 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:40:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20160 states. [2025-04-13 18:41:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20160 to 16528. [2025-04-13 18:41:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16528 states, 16527 states have (on average 2.965995038421976) internal successors, (49019), 16527 states have internal predecessors, (49019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:03,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16528 states to 16528 states and 49019 transitions. [2025-04-13 18:41:03,589 INFO L79 Accepts]: Start accepts. Automaton has 16528 states and 49019 transitions. Word has length 25 [2025-04-13 18:41:03,589 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:03,590 INFO L485 AbstractCegarLoop]: Abstraction has 16528 states and 49019 transitions. [2025-04-13 18:41:03,590 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 35 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:03,590 INFO L278 IsEmpty]: Start isEmpty. Operand 16528 states and 49019 transitions. [2025-04-13 18:41:03,600 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:41:03,600 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:03,600 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:41:03,606 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 18:41:03,800 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:03,800 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 18:41:03,801 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1302210992, now seen corresponding path program 51 times [2025-04-13 18:41:03,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:03,801 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344425252] [2025-04-13 18:41:03,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:41:03,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:03,803 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 5 equivalence classes. [2025-04-13 18:41:03,805 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:41:03,805 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-04-13 18:41:03,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:03,901 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344425252] [2025-04-13 18:41:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344425252] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:03,901 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374132760] [2025-04-13 18:41:03,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:41:03,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:03,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:03,903 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 18:41:03,903 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 18:41:03,926 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 5 equivalence classes. [2025-04-13 18:41:03,935 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:41:03,935 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-04-13 18:41:03,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:03,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:41:03,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:04,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:04,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374132760] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:41:04,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:41:04,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 31 [2025-04-13 18:41:04,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299468915] [2025-04-13 18:41:04,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:41:04,202 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:41:04,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:04,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:41:04,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:41:04,202 INFO L87 Difference]: Start difference. First operand 16528 states and 49019 transitions. Second operand has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:19,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:19,922 INFO L93 Difference]: Finished difference Result 24651 states and 72861 transitions. [2025-04-13 18:41:19,922 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-04-13 18:41:19,922 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:41:19,922 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:19,976 INFO L225 Difference]: With dead ends: 24651 [2025-04-13 18:41:19,977 INFO L226 Difference]: Without dead ends: 24614 [2025-04-13 18:41:19,984 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 104 SyntacticMatches, 4 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2688, Invalid=8654, Unknown=0, NotChecked=0, Total=11342 [2025-04-13 18:41:19,985 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 227 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:19,985 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 14 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:41:19,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24614 states. [2025-04-13 18:41:25,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24614 to 18018. [2025-04-13 18:41:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18018 states, 18017 states have (on average 2.945884442471) internal successors, (53076), 18017 states have internal predecessors, (53076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18018 states to 18018 states and 53076 transitions. [2025-04-13 18:41:25,439 INFO L79 Accepts]: Start accepts. Automaton has 18018 states and 53076 transitions. Word has length 25 [2025-04-13 18:41:25,439 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:25,439 INFO L485 AbstractCegarLoop]: Abstraction has 18018 states and 53076 transitions. [2025-04-13 18:41:25,439 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.0) internal successors, (62), 31 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:25,439 INFO L278 IsEmpty]: Start isEmpty. Operand 18018 states and 53076 transitions. [2025-04-13 18:41:25,450 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:41:25,450 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:25,450 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:41:25,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2025-04-13 18:41:25,651 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,SelfDestructingSolverStorable53 [2025-04-13 18:41:25,651 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 18:41:25,651 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1245537868, now seen corresponding path program 52 times [2025-04-13 18:41:25,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:25,651 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704829343] [2025-04-13 18:41:25,651 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:41:25,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:25,653 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:41:25,655 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 24 of 25 statements. [2025-04-13 18:41:25,655 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:41:25,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:25,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:25,715 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704829343] [2025-04-13 18:41:25,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704829343] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:25,715 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740890689] [2025-04-13 18:41:25,715 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:41:25,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:25,717 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 18:41:25,719 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 18:41:25,742 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:41:25,749 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 24 of 25 statements. [2025-04-13 18:41:25,749 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:41:25,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:25,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:41:25,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:25,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:25,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:25,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740890689] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:41:25,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:41:25,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 19 [2025-04-13 18:41:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213966800] [2025-04-13 18:41:25,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:41:25,959 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:41:25,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:25,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:41:25,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:41:25,959 INFO L87 Difference]: Start difference. First operand 18018 states and 53076 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:39,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:41:39,380 INFO L93 Difference]: Finished difference Result 23798 states and 70125 transitions. [2025-04-13 18:41:39,380 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-04-13 18:41:39,380 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:41:39,380 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:41:39,431 INFO L225 Difference]: With dead ends: 23798 [2025-04-13 18:41:39,431 INFO L226 Difference]: Without dead ends: 23779 [2025-04-13 18:41:39,437 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1032, Invalid=2160, Unknown=0, NotChecked=0, Total=3192 [2025-04-13 18:41:39,437 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 106 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:41:39,437 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 8 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:41:39,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23779 states. [2025-04-13 18:41:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23779 to 16768. [2025-04-13 18:41:44,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16768 states, 16767 states have (on average 2.93511063398342) internal successors, (49213), 16767 states have internal predecessors, (49213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16768 states to 16768 states and 49213 transitions. [2025-04-13 18:41:44,615 INFO L79 Accepts]: Start accepts. Automaton has 16768 states and 49213 transitions. Word has length 25 [2025-04-13 18:41:44,616 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:41:44,616 INFO L485 AbstractCegarLoop]: Abstraction has 16768 states and 49213 transitions. [2025-04-13 18:41:44,616 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:41:44,616 INFO L278 IsEmpty]: Start isEmpty. Operand 16768 states and 49213 transitions. [2025-04-13 18:41:44,627 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:41:44,627 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:41:44,627 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:41:44,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2025-04-13 18:41:44,828 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,SelfDestructingSolverStorable54 [2025-04-13 18:41:44,828 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 18:41:44,828 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:41:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash -877429986, now seen corresponding path program 53 times [2025-04-13 18:41:44,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:41:44,828 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477236782] [2025-04-13 18:41:44,828 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:41:44,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:41:44,830 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:41:44,832 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:41:44,833 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:41:44,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:44,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:41:44,952 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477236782] [2025-04-13 18:41:44,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477236782] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:41:44,952 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842997841] [2025-04-13 18:41:44,952 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:41:44,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:41:44,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:41:44,954 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 18:41:44,955 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 18:41:44,978 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:41:44,987 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:41:44,988 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-04-13 18:41:44,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:41:44,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 18:41:44,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:41:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:45,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:41:45,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:41:45,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842997841] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:41:45,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:41:45,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 32 [2025-04-13 18:41:45,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507848104] [2025-04-13 18:41:45,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:41:45,232 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-13 18:41:45,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:41:45,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-13 18:41:45,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2025-04-13 18:41:45,233 INFO L87 Difference]: Start difference. First operand 16768 states and 49213 transitions. Second operand has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:00,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:00,531 INFO L93 Difference]: Finished difference Result 23146 states and 68745 transitions. [2025-04-13 18:42:00,532 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-04-13 18:42:00,532 INFO L79 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:42:00,532 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:00,582 INFO L225 Difference]: With dead ends: 23146 [2025-04-13 18:42:00,582 INFO L226 Difference]: Without dead ends: 23071 [2025-04-13 18:42:00,588 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2312 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1956, Invalid=5700, Unknown=0, NotChecked=0, Total=7656 [2025-04-13 18:42:00,589 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 216 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:00,589 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 21 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:42:00,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23071 states. [2025-04-13 18:42:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23071 to 16714. [2025-04-13 18:42:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16714 states, 16713 states have (on average 2.931969125830192) internal successors, (49002), 16713 states have internal predecessors, (49002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16714 states to 16714 states and 49002 transitions. [2025-04-13 18:42:05,704 INFO L79 Accepts]: Start accepts. Automaton has 16714 states and 49002 transitions. Word has length 25 [2025-04-13 18:42:05,704 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:05,704 INFO L485 AbstractCegarLoop]: Abstraction has 16714 states and 49002 transitions. [2025-04-13 18:42:05,704 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:05,704 INFO L278 IsEmpty]: Start isEmpty. Operand 16714 states and 49002 transitions. [2025-04-13 18:42:05,714 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:42:05,715 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:05,715 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:05,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2025-04-13 18:42:05,915 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2025-04-13 18:42:05,916 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 18:42:05,916 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1412659788, now seen corresponding path program 54 times [2025-04-13 18:42:05,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:05,916 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187031218] [2025-04-13 18:42:05,916 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:42:05,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:05,921 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:42:05,923 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:42:05,923 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:42:05,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:06,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:06,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187031218] [2025-04-13 18:42:06,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187031218] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:06,012 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107565842] [2025-04-13 18:42:06,012 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:42:06,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:06,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:06,014 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 18:42:06,015 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 18:42:06,037 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 3 equivalence classes. [2025-04-13 18:42:06,045 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:42:06,045 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-04-13 18:42:06,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:06,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 18:42:06,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:06,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:06,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107565842] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:06,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:06,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2025-04-13 18:42:06,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996351363] [2025-04-13 18:42:06,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:06,280 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:42:06,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:06,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:42:06,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:42:06,281 INFO L87 Difference]: Start difference. First operand 16714 states and 49002 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:21,116 INFO L93 Difference]: Finished difference Result 24041 states and 71575 transitions. [2025-04-13 18:42:21,117 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2025-04-13 18:42:21,117 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:42:21,117 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:21,173 INFO L225 Difference]: With dead ends: 24041 [2025-04-13 18:42:21,173 INFO L226 Difference]: Without dead ends: 24004 [2025-04-13 18:42:21,179 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5345 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3297, Invalid=11709, Unknown=0, NotChecked=0, Total=15006 [2025-04-13 18:42:21,180 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 192 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:21,180 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 30 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:42:21,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24004 states. [2025-04-13 18:42:26,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24004 to 17548. [2025-04-13 18:42:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17548 states, 17547 states have (on average 2.9357155069242604) internal successors, (51513), 17547 states have internal predecessors, (51513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17548 states to 17548 states and 51513 transitions. [2025-04-13 18:42:26,705 INFO L79 Accepts]: Start accepts. Automaton has 17548 states and 51513 transitions. Word has length 25 [2025-04-13 18:42:26,705 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:26,705 INFO L485 AbstractCegarLoop]: Abstraction has 17548 states and 51513 transitions. [2025-04-13 18:42:26,706 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:26,706 INFO L278 IsEmpty]: Start isEmpty. Operand 17548 states and 51513 transitions. [2025-04-13 18:42:26,717 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:42:26,717 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:26,717 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:26,723 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 18:42:26,917 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,SelfDestructingSolverStorable56 [2025-04-13 18:42:26,917 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 18:42:26,918 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1053856248, now seen corresponding path program 55 times [2025-04-13 18:42:26,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:26,918 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004488845] [2025-04-13 18:42:26,918 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:42:26,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:26,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-13 18:42:26,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:42:26,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:26,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:27,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:27,071 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004488845] [2025-04-13 18:42:27,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004488845] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:27,071 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369535] [2025-04-13 18:42:27,071 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:42:27,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:27,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:27,073 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 18:42:27,074 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 18:42:27,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-13 18:42:27,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:42:27,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:42:27,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:27,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-13 18:42:27,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:27,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:27,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:27,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369535] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:27,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:27,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 31 [2025-04-13 18:42:27,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557817379] [2025-04-13 18:42:27,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:27,359 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-13 18:42:27,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:27,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-13 18:42:27,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=699, Unknown=0, NotChecked=0, Total=930 [2025-04-13 18:42:27,360 INFO L87 Difference]: Start difference. First operand 17548 states and 51513 transitions. Second operand has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:46,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:42:46,541 INFO L93 Difference]: Finished difference Result 31091 states and 93402 transitions. [2025-04-13 18:42:46,541 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-04-13 18:42:46,541 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:42:46,541 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:42:46,633 INFO L225 Difference]: With dead ends: 31091 [2025-04-13 18:42:46,633 INFO L226 Difference]: Without dead ends: 31076 [2025-04-13 18:42:46,641 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1837, Invalid=5473, Unknown=0, NotChecked=0, Total=7310 [2025-04-13 18:42:46,642 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 144 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:42:46,642 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 37 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:42:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31076 states. [2025-04-13 18:42:53,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31076 to 21620. [2025-04-13 18:42:53,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21620 states, 21619 states have (on average 2.955409593413201) internal successors, (63893), 21619 states have internal predecessors, (63893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21620 states to 21620 states and 63893 transitions. [2025-04-13 18:42:53,512 INFO L79 Accepts]: Start accepts. Automaton has 21620 states and 63893 transitions. Word has length 25 [2025-04-13 18:42:53,512 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:42:53,512 INFO L485 AbstractCegarLoop]: Abstraction has 21620 states and 63893 transitions. [2025-04-13 18:42:53,512 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:42:53,512 INFO L278 IsEmpty]: Start isEmpty. Operand 21620 states and 63893 transitions. [2025-04-13 18:42:53,609 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:42:53,610 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:42:53,610 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:42:53,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2025-04-13 18:42:53,810 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,SelfDestructingSolverStorable57 [2025-04-13 18:42:53,810 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 18:42:53,810 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:42:53,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1386539486, now seen corresponding path program 56 times [2025-04-13 18:42:53,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:42:53,811 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652149463] [2025-04-13 18:42:53,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:42:53,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:42:53,812 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:42:53,814 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:42:53,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:42:53,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:53,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:42:53,947 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652149463] [2025-04-13 18:42:53,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652149463] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:42:53,947 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279948813] [2025-04-13 18:42:53,947 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:42:53,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:42:53,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:42:53,949 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 18:42:53,951 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 18:42:53,974 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:42:53,983 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:42:53,984 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:42:53,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:42:53,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 18:42:53,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:42:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:54,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:42:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:42:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279948813] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:42:54,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:42:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 33 [2025-04-13 18:42:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539401893] [2025-04-13 18:42:54,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:42:54,292 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 18:42:54,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:42:54,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 18:42:54,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:42:54,293 INFO L87 Difference]: Start difference. First operand 21620 states and 63893 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:09,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:09,395 INFO L93 Difference]: Finished difference Result 25240 states and 74594 transitions. [2025-04-13 18:43:09,395 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-04-13 18:43:09,395 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:43:09,395 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:09,472 INFO L225 Difference]: With dead ends: 25240 [2025-04-13 18:43:09,472 INFO L226 Difference]: Without dead ends: 25235 [2025-04-13 18:43:09,480 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1140, Invalid=3690, Unknown=0, NotChecked=0, Total=4830 [2025-04-13 18:43:09,481 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 207 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:09,481 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 35 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:43:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25235 states. [2025-04-13 18:43:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25235 to 21620. [2025-04-13 18:43:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21620 states, 21619 states have (on average 2.955409593413201) internal successors, (63893), 21619 states have internal predecessors, (63893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:16,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21620 states to 21620 states and 63893 transitions. [2025-04-13 18:43:16,552 INFO L79 Accepts]: Start accepts. Automaton has 21620 states and 63893 transitions. Word has length 25 [2025-04-13 18:43:16,552 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:16,552 INFO L485 AbstractCegarLoop]: Abstraction has 21620 states and 63893 transitions. [2025-04-13 18:43:16,552 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:16,552 INFO L278 IsEmpty]: Start isEmpty. Operand 21620 states and 63893 transitions. [2025-04-13 18:43:16,566 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:43:16,566 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:16,566 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:16,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2025-04-13 18:43:16,767 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-04-13 18:43:16,767 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 18:43:16,767 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash -379235554, now seen corresponding path program 57 times [2025-04-13 18:43:16,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:16,767 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310731427] [2025-04-13 18:43:16,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:43:16,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:16,769 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-04-13 18:43:16,774 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:43:16,774 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:43:16,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:16,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:16,865 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310731427] [2025-04-13 18:43:16,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310731427] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:16,865 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714692903] [2025-04-13 18:43:16,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:43:16,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:16,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:16,867 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 18:43:16,867 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 18:43:16,890 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 4 equivalence classes. [2025-04-13 18:43:16,899 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-04-13 18:43:16,899 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:43:16,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:16,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-04-13 18:43:16,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:16,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:17,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714692903] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:17,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:17,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 30 [2025-04-13 18:43:17,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506872151] [2025-04-13 18:43:17,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:17,113 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-13 18:43:17,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:17,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-13 18:43:17,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2025-04-13 18:43:17,113 INFO L87 Difference]: Start difference. First operand 21620 states and 63893 transitions. Second operand has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:34,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:34,024 INFO L93 Difference]: Finished difference Result 27587 states and 82292 transitions. [2025-04-13 18:43:34,024 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2025-04-13 18:43:34,024 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:43:34,025 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:34,104 INFO L225 Difference]: With dead ends: 27587 [2025-04-13 18:43:34,104 INFO L226 Difference]: Without dead ends: 27563 [2025-04-13 18:43:34,113 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4952 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2353, Invalid=11689, Unknown=0, NotChecked=0, Total=14042 [2025-04-13 18:43:34,113 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 539 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:34,113 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 24 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:43:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27563 states. [2025-04-13 18:43:41,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27563 to 21672. [2025-04-13 18:43:41,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21672 states, 21671 states have (on average 2.955701167458816) internal successors, (64053), 21671 states have internal predecessors, (64053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21672 states to 21672 states and 64053 transitions. [2025-04-13 18:43:41,246 INFO L79 Accepts]: Start accepts. Automaton has 21672 states and 64053 transitions. Word has length 25 [2025-04-13 18:43:41,246 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:43:41,246 INFO L485 AbstractCegarLoop]: Abstraction has 21672 states and 64053 transitions. [2025-04-13 18:43:41,246 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.0) internal successors, (60), 30 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:41,246 INFO L278 IsEmpty]: Start isEmpty. Operand 21672 states and 64053 transitions. [2025-04-13 18:43:41,262 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-13 18:43:41,262 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:43:41,262 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:43:41,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2025-04-13 18:43:41,462 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:41,463 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 18:43:41,463 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:43:41,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1846211720, now seen corresponding path program 58 times [2025-04-13 18:43:41,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:43:41,463 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075600491] [2025-04-13 18:43:41,463 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:43:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:43:41,466 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:43:41,468 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 24 of 25 statements. [2025-04-13 18:43:41,468 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:43:41,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:41,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:43:41,532 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075600491] [2025-04-13 18:43:41,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075600491] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:43:41,532 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466578142] [2025-04-13 18:43:41,532 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:43:41,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:43:41,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:43:41,534 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 18:43:41,534 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 18:43:41,557 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-04-13 18:43:41,564 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 24 of 25 statements. [2025-04-13 18:43:41,564 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-13 18:43:41,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:43:41,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-04-13 18:43:41,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:43:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:41,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:43:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:43:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466578142] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:43:41,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:43:41,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 19 [2025-04-13 18:43:41,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810482503] [2025-04-13 18:43:41,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:43:41,776 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-13 18:43:41,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:43:41,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-13 18:43:41,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:43:41,777 INFO L87 Difference]: Start difference. First operand 21672 states and 64053 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:43:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:43:57,561 INFO L93 Difference]: Finished difference Result 26266 states and 77268 transitions. [2025-04-13 18:43:57,561 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-04-13 18:43:57,561 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-13 18:43:57,562 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:43:57,623 INFO L225 Difference]: With dead ends: 26266 [2025-04-13 18:43:57,623 INFO L226 Difference]: Without dead ends: 26253 [2025-04-13 18:43:57,631 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=561, Invalid=1161, Unknown=0, NotChecked=0, Total=1722 [2025-04-13 18:43:57,631 INFO L437 NwaCegarLoop]: 3 mSDtfsCounter, 57 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:43:57,631 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:43:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26253 states. [2025-04-13 18:44:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26253 to 14054. [2025-04-13 18:44:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14054 states, 14053 states have (on average 2.929481249555255) internal successors, (41168), 14053 states have internal predecessors, (41168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14054 states to 14054 states and 41168 transitions. [2025-04-13 18:44:02,590 INFO L79 Accepts]: Start accepts. Automaton has 14054 states and 41168 transitions. Word has length 25 [2025-04-13 18:44:02,590 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:02,590 INFO L485 AbstractCegarLoop]: Abstraction has 14054 states and 41168 transitions. [2025-04-13 18:44:02,590 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:02,590 INFO L278 IsEmpty]: Start isEmpty. Operand 14054 states and 41168 transitions. [2025-04-13 18:44:02,603 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:44:02,603 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:02,603 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:02,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2025-04-13 18:44:02,804 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:02,804 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 18:44:02,804 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:02,804 INFO L85 PathProgramCache]: Analyzing trace with hash -467855614, now seen corresponding path program 59 times [2025-04-13 18:44:02,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:02,804 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228629494] [2025-04-13 18:44:02,804 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:44:02,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:02,806 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 5 equivalence classes. [2025-04-13 18:44:02,808 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:44:02,809 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 18:44:02,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:44:02,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:02,900 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228629494] [2025-04-13 18:44:02,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228629494] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:02,900 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878828776] [2025-04-13 18:44:02,901 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:44:02,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:02,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:02,902 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 18:44:02,903 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 18:44:02,927 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 5 equivalence classes. [2025-04-13 18:44:02,936 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:44:02,936 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 18:44:02,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:02,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-13 18:44:02,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:44:03,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:03,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878828776] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:03,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:03,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 35 [2025-04-13 18:44:03,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832059168] [2025-04-13 18:44:03,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:03,286 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-04-13 18:44:03,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:03,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-04-13 18:44:03,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 18:44:03,287 INFO L87 Difference]: Start difference. First operand 14054 states and 41168 transitions. Second operand has 36 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 35 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:12,503 INFO L93 Difference]: Finished difference Result 17997 states and 53000 transitions. [2025-04-13 18:44:12,503 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-04-13 18:44:12,503 INFO L79 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 35 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 18:44:12,503 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:12,549 INFO L225 Difference]: With dead ends: 17997 [2025-04-13 18:44:12,549 INFO L226 Difference]: Without dead ends: 17912 [2025-04-13 18:44:12,555 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1335, Invalid=5637, Unknown=0, NotChecked=0, Total=6972 [2025-04-13 18:44:12,555 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 203 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:12,555 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 0 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:44:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17912 states. [2025-04-13 18:44:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17912 to 12000. [2025-04-13 18:44:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12000 states, 11999 states have (on average 2.926160513376115) internal successors, (35111), 11999 states have internal predecessors, (35111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12000 states to 12000 states and 35111 transitions. [2025-04-13 18:44:17,383 INFO L79 Accepts]: Start accepts. Automaton has 12000 states and 35111 transitions. Word has length 27 [2025-04-13 18:44:17,383 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:17,383 INFO L485 AbstractCegarLoop]: Abstraction has 12000 states and 35111 transitions. [2025-04-13 18:44:17,383 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 35 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:17,383 INFO L278 IsEmpty]: Start isEmpty. Operand 12000 states and 35111 transitions. [2025-04-13 18:44:17,392 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:44:17,392 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:17,392 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:17,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2025-04-13 18:44:17,592 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:17,593 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 18:44:17,593 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:17,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2010110370, now seen corresponding path program 60 times [2025-04-13 18:44:17,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:17,593 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038422836] [2025-04-13 18:44:17,593 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:44:17,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:17,595 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 6 equivalence classes. [2025-04-13 18:44:17,598 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:44:17,598 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 18:44:17,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:17,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:17,742 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038422836] [2025-04-13 18:44:17,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038422836] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:17,742 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751412628] [2025-04-13 18:44:17,742 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:44:17,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:17,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:17,744 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 18:44:17,746 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 18:44:17,770 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 6 equivalence classes. [2025-04-13 18:44:17,781 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:44:17,781 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 18:44:17,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:17,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-13 18:44:17,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:17,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:18,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751412628] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:18,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:18,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2025-04-13 18:44:18,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134424606] [2025-04-13 18:44:18,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:18,277 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-04-13 18:44:18,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:18,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-04-13 18:44:18,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=1186, Unknown=0, NotChecked=0, Total=1482 [2025-04-13 18:44:18,278 INFO L87 Difference]: Start difference. First operand 12000 states and 35111 transitions. Second operand has 39 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 38 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:28,878 INFO L93 Difference]: Finished difference Result 20101 states and 59711 transitions. [2025-04-13 18:44:28,878 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2025-04-13 18:44:28,878 INFO L79 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 38 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 18:44:28,878 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:28,929 INFO L225 Difference]: With dead ends: 20101 [2025-04-13 18:44:28,929 INFO L226 Difference]: Without dead ends: 20049 [2025-04-13 18:44:28,935 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3940 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1975, Invalid=8327, Unknown=0, NotChecked=0, Total=10302 [2025-04-13 18:44:28,935 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 245 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:28,935 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 0 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:44:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20049 states. [2025-04-13 18:44:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20049 to 17488. [2025-04-13 18:44:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17488 states, 17487 states have (on average 2.92714587979642) internal successors, (51187), 17487 states have internal predecessors, (51187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17488 states to 17488 states and 51187 transitions. [2025-04-13 18:44:34,722 INFO L79 Accepts]: Start accepts. Automaton has 17488 states and 51187 transitions. Word has length 27 [2025-04-13 18:44:34,722 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:34,722 INFO L485 AbstractCegarLoop]: Abstraction has 17488 states and 51187 transitions. [2025-04-13 18:44:34,722 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 38 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:34,722 INFO L278 IsEmpty]: Start isEmpty. Operand 17488 states and 51187 transitions. [2025-04-13 18:44:34,734 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:44:34,734 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:34,734 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:34,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2025-04-13 18:44:34,937 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,SelfDestructingSolverStorable62 [2025-04-13 18:44:34,937 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 18:44:34,937 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:34,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1317766184, now seen corresponding path program 61 times [2025-04-13 18:44:34,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:34,937 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298431042] [2025-04-13 18:44:34,937 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:44:34,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:34,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 18:44:34,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:44:34,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:44:34,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:35,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:35,058 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298431042] [2025-04-13 18:44:35,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298431042] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:35,058 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018488883] [2025-04-13 18:44:35,058 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:44:35,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:35,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:35,060 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 18:44:35,060 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 18:44:35,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 18:44:35,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:44:35,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:44:35,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:35,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 18:44:35,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:35,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:35,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018488883] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:35,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:35,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 35 [2025-04-13 18:44:35,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785825462] [2025-04-13 18:44:35,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:35,534 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-04-13 18:44:35,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:35,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-04-13 18:44:35,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2025-04-13 18:44:35,534 INFO L87 Difference]: Start difference. First operand 17488 states and 51187 transitions. Second operand has 36 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 35 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:47,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:44:47,970 INFO L93 Difference]: Finished difference Result 29239 states and 86761 transitions. [2025-04-13 18:44:47,970 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-04-13 18:44:47,971 INFO L79 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 35 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 18:44:47,971 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:44:48,050 INFO L225 Difference]: With dead ends: 29239 [2025-04-13 18:44:48,051 INFO L226 Difference]: Without dead ends: 29220 [2025-04-13 18:44:48,060 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1165, Invalid=4385, Unknown=0, NotChecked=0, Total=5550 [2025-04-13 18:44:48,060 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:44:48,060 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:44:48,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29220 states. [2025-04-13 18:44:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29220 to 25758. [2025-04-13 18:44:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25758 states, 25757 states have (on average 2.958496719338432) internal successors, (76202), 25757 states have internal predecessors, (76202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25758 states to 25758 states and 76202 transitions. [2025-04-13 18:44:55,936 INFO L79 Accepts]: Start accepts. Automaton has 25758 states and 76202 transitions. Word has length 27 [2025-04-13 18:44:55,936 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:44:55,936 INFO L485 AbstractCegarLoop]: Abstraction has 25758 states and 76202 transitions. [2025-04-13 18:44:55,937 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 35 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:44:55,937 INFO L278 IsEmpty]: Start isEmpty. Operand 25758 states and 76202 transitions. [2025-04-13 18:44:55,949 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:44:55,950 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:44:55,950 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:44:55,956 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 18:44:56,150 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,SelfDestructingSolverStorable63 [2025-04-13 18:44:56,150 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:44:56,150 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:44:56,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1132207168, now seen corresponding path program 62 times [2025-04-13 18:44:56,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:44:56,151 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437979507] [2025-04-13 18:44:56,151 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:44:56,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:44:56,153 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:44:56,155 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:44:56,155 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:44:56,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:56,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:44:56,268 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437979507] [2025-04-13 18:44:56,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437979507] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:44:56,268 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591350939] [2025-04-13 18:44:56,268 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:44:56,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:44:56,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:44:56,270 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 18:44:56,271 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 18:44:56,295 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:44:56,304 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:44:56,304 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:44:56,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:44:56,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-13 18:44:56,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:44:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:44:56,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:44:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:44:56,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591350939] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:44:56,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:44:56,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 36 [2025-04-13 18:44:56,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607346218] [2025-04-13 18:44:56,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:44:56,856 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 18:44:56,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:44:56,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 18:44:56,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:44:56,857 INFO L87 Difference]: Start difference. First operand 25758 states and 76202 transitions. Second operand has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:10,288 INFO L93 Difference]: Finished difference Result 30672 states and 91402 transitions. [2025-04-13 18:45:10,289 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-04-13 18:45:10,289 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 18:45:10,289 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:10,364 INFO L225 Difference]: With dead ends: 30672 [2025-04-13 18:45:10,364 INFO L226 Difference]: Without dead ends: 30651 [2025-04-13 18:45:10,372 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1235, Invalid=5245, Unknown=0, NotChecked=0, Total=6480 [2025-04-13 18:45:10,372 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:10,372 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 0 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-13 18:45:10,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30651 states. [2025-04-13 18:45:17,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30651 to 19360. [2025-04-13 18:45:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19360 states, 19359 states have (on average 2.940802727413606) internal successors, (56931), 19359 states have internal predecessors, (56931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19360 states to 19360 states and 56931 transitions. [2025-04-13 18:45:17,690 INFO L79 Accepts]: Start accepts. Automaton has 19360 states and 56931 transitions. Word has length 27 [2025-04-13 18:45:17,691 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:17,691 INFO L485 AbstractCegarLoop]: Abstraction has 19360 states and 56931 transitions. [2025-04-13 18:45:17,691 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:17,691 INFO L278 IsEmpty]: Start isEmpty. Operand 19360 states and 56931 transitions. [2025-04-13 18:45:17,702 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:17,702 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:17,703 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:17,709 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 18:45:17,903 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:17,903 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:17,903 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:17,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1559361022, now seen corresponding path program 63 times [2025-04-13 18:45:17,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:17,903 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146646345] [2025-04-13 18:45:17,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:17,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:17,906 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-04-13 18:45:17,908 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:17,908 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:45:17,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:45:17,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:17,956 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146646345] [2025-04-13 18:45:17,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146646345] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:17,956 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873460928] [2025-04-13 18:45:17,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:45:17,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:17,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:17,958 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:17,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2025-04-13 18:45:17,983 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-04-13 18:45:17,991 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:17,992 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:45:17,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:17,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 18:45:17,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:45:18,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:45:18,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873460928] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:18,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:18,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 15 [2025-04-13 18:45:18,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757721778] [2025-04-13 18:45:18,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:18,118 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-13 18:45:18,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:18,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-13 18:45:18,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2025-04-13 18:45:18,118 INFO L87 Difference]: Start difference. First operand 19360 states and 56931 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:28,925 INFO L93 Difference]: Finished difference Result 20563 states and 60180 transitions. [2025-04-13 18:45:28,925 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-13 18:45:28,925 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 18:45:28,925 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:28,972 INFO L225 Difference]: With dead ends: 20563 [2025-04-13 18:45:28,972 INFO L226 Difference]: Without dead ends: 20545 [2025-04-13 18:45:28,977 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2025-04-13 18:45:28,977 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 71 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:28,978 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 18 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 18:45:28,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20545 states. [2025-04-13 18:45:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20545 to 18026. [2025-04-13 18:45:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18026 states, 18025 states have (on average 2.9438002773925103) internal successors, (53062), 18025 states have internal predecessors, (53062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18026 states to 18026 states and 53062 transitions. [2025-04-13 18:45:35,824 INFO L79 Accepts]: Start accepts. Automaton has 18026 states and 53062 transitions. Word has length 27 [2025-04-13 18:45:35,824 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:45:35,824 INFO L485 AbstractCegarLoop]: Abstraction has 18026 states and 53062 transitions. [2025-04-13 18:45:35,824 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:35,824 INFO L278 IsEmpty]: Start isEmpty. Operand 18026 states and 53062 transitions. [2025-04-13 18:45:35,834 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:45:35,834 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:45:35,834 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:45:35,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2025-04-13 18:45:36,035 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:36,035 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:45:36,035 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:45:36,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1065631838, now seen corresponding path program 64 times [2025-04-13 18:45:36,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:45:36,035 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755524195] [2025-04-13 18:45:36,035 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:36,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:45:36,037 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:45:36,040 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:36,040 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:36,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:36,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:45:36,108 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755524195] [2025-04-13 18:45:36,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755524195] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:45:36,108 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225533512] [2025-04-13 18:45:36,108 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 18:45:36,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:45:36,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:45:36,110 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:45:36,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2025-04-13 18:45:36,134 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:45:36,142 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:45:36,142 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 18:45:36,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:45:36,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 18:45:36,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:45:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:36,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:45:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:45:36,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225533512] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:45:36,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:45:36,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 16 [2025-04-13 18:45:36,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633474563] [2025-04-13 18:45:36,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:45:36,270 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-04-13 18:45:36,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:45:36,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-04-13 18:45:36,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-04-13 18:45:36,271 INFO L87 Difference]: Start difference. First operand 18026 states and 53062 transitions. Second operand has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:45:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:45:52,351 INFO L93 Difference]: Finished difference Result 28957 states and 86243 transitions. [2025-04-13 18:45:52,351 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-04-13 18:45:52,351 INFO L79 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 18:45:52,351 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:45:52,415 INFO L225 Difference]: With dead ends: 28957 [2025-04-13 18:45:52,415 INFO L226 Difference]: Without dead ends: 28896 [2025-04-13 18:45:52,421 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2025-04-13 18:45:52,422 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 87 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-13 18:45:52,422 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 29 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-13 18:45:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28896 states. [2025-04-13 18:46:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28896 to 25489. [2025-04-13 18:46:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25489 states, 25488 states have (on average 2.983482423101067) internal successors, (76043), 25488 states have internal predecessors, (76043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:46:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25489 states to 25489 states and 76043 transitions. [2025-04-13 18:46:02,873 INFO L79 Accepts]: Start accepts. Automaton has 25489 states and 76043 transitions. Word has length 27 [2025-04-13 18:46:02,874 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:02,874 INFO L485 AbstractCegarLoop]: Abstraction has 25489 states and 76043 transitions. [2025-04-13 18:46:02,874 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:46:02,874 INFO L278 IsEmpty]: Start isEmpty. Operand 25489 states and 76043 transitions. [2025-04-13 18:46:02,887 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:46:02,887 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:02,887 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:02,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2025-04-13 18:46:03,087 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2025-04-13 18:46:03,088 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:03,088 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:03,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2116241580, now seen corresponding path program 65 times [2025-04-13 18:46:03,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:03,088 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039938091] [2025-04-13 18:46:03,088 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:46:03,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:03,090 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 5 equivalence classes. [2025-04-13 18:46:03,092 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:46:03,092 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 18:46:03,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:46:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:03,187 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039938091] [2025-04-13 18:46:03,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039938091] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:03,187 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394965064] [2025-04-13 18:46:03,187 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 18:46:03,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:03,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:03,189 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:03,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2025-04-13 18:46:03,212 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 5 equivalence classes. [2025-04-13 18:46:03,222 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:46:03,222 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-04-13 18:46:03,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:03,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 18:46:03,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:03,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:03,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394965064] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:03,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:03,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 33 [2025-04-13 18:46:03,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450174443] [2025-04-13 18:46:03,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:03,663 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-04-13 18:46:03,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:03,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-04-13 18:46:03,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=900, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:46:03,663 INFO L87 Difference]: Start difference. First operand 25489 states and 76043 transitions. Second operand has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:46:31,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:46:31,950 INFO L93 Difference]: Finished difference Result 48389 states and 147692 transitions. [2025-04-13 18:46:31,950 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2025-04-13 18:46:31,951 INFO L79 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 18:46:31,951 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:46:32,083 INFO L225 Difference]: With dead ends: 48389 [2025-04-13 18:46:32,084 INFO L226 Difference]: Without dead ends: 48337 [2025-04-13 18:46:32,097 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4057 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2183, Invalid=8529, Unknown=0, NotChecked=0, Total=10712 [2025-04-13 18:46:32,097 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 274 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-04-13 18:46:32,097 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 0 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-04-13 18:46:32,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48337 states. [2025-04-13 18:46:46,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48337 to 29897. [2025-04-13 18:46:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29897 states, 29896 states have (on average 2.9974244046026226) internal successors, (89611), 29896 states have internal predecessors, (89611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:46:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29897 states to 29897 states and 89611 transitions. [2025-04-13 18:46:46,964 INFO L79 Accepts]: Start accepts. Automaton has 29897 states and 89611 transitions. Word has length 27 [2025-04-13 18:46:46,965 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:46:46,965 INFO L485 AbstractCegarLoop]: Abstraction has 29897 states and 89611 transitions. [2025-04-13 18:46:46,965 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:46:46,965 INFO L278 IsEmpty]: Start isEmpty. Operand 29897 states and 89611 transitions. [2025-04-13 18:46:46,977 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:46:46,977 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:46:46,977 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:46:46,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2025-04-13 18:46:47,177 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2025-04-13 18:46:47,177 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:46:47,178 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:46:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1777637504, now seen corresponding path program 66 times [2025-04-13 18:46:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:46:47,178 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166704145] [2025-04-13 18:46:47,178 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:46:47,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:46:47,180 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 6 equivalence classes. [2025-04-13 18:46:47,183 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:46:47,183 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 18:46:47,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:46:47,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:46:47,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166704145] [2025-04-13 18:46:47,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166704145] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:46:47,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387332459] [2025-04-13 18:46:47,283 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 18:46:47,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:46:47,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:46:47,285 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:46:47,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2025-04-13 18:46:47,314 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 6 equivalence classes. [2025-04-13 18:46:47,323 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:46:47,323 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-04-13 18:46:47,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:46:47,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 18:46:47,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:46:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:46:47,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:46:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-13 18:46:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387332459] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:46:47,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:46:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 32 [2025-04-13 18:46:47,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664879225] [2025-04-13 18:46:47,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:46:47,925 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-04-13 18:46:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:46:47,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-04-13 18:46:47,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=869, Unknown=0, NotChecked=0, Total=1056 [2025-04-13 18:46:47,926 INFO L87 Difference]: Start difference. First operand 29897 states and 89611 transitions. Second operand has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:47:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:47:21,435 INFO L93 Difference]: Finished difference Result 38778 states and 115889 transitions. [2025-04-13 18:47:21,435 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-04-13 18:47:21,436 INFO L79 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 18:47:21,436 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:47:21,531 INFO L225 Difference]: With dead ends: 38778 [2025-04-13 18:47:21,531 INFO L226 Difference]: Without dead ends: 38700 [2025-04-13 18:47:21,542 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1028, Invalid=4824, Unknown=0, NotChecked=0, Total=5852 [2025-04-13 18:47:21,542 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 212 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:47:21,542 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 5 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:47:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38700 states. [2025-04-13 18:47:37,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38700 to 32639. [2025-04-13 18:47:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32639 states, 32638 states have (on average 2.9876217905508917) internal successors, (97510), 32638 states have internal predecessors, (97510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:47:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32639 states to 32639 states and 97510 transitions. [2025-04-13 18:47:38,032 INFO L79 Accepts]: Start accepts. Automaton has 32639 states and 97510 transitions. Word has length 27 [2025-04-13 18:47:38,032 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:47:38,032 INFO L485 AbstractCegarLoop]: Abstraction has 32639 states and 97510 transitions. [2025-04-13 18:47:38,032 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.878787878787879) internal successors, (62), 32 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:47:38,033 INFO L278 IsEmpty]: Start isEmpty. Operand 32639 states and 97510 transitions. [2025-04-13 18:47:38,047 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:47:38,047 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:47:38,048 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:47:38,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2025-04-13 18:47:38,248 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:47:38,248 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:47:38,248 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:47:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash 946160960, now seen corresponding path program 67 times [2025-04-13 18:47:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:47:38,249 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584711073] [2025-04-13 18:47:38,249 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:47:38,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:47:38,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 18:47:38,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:47:38,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:47:38,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:47:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:38,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:47:38,489 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584711073] [2025-04-13 18:47:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584711073] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:47:38,489 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231639772] [2025-04-13 18:47:38,489 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-13 18:47:38,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:47:38,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:47:38,491 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:47:38,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2025-04-13 18:47:38,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-13 18:47:38,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:47:38,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 18:47:38,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:47:38,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 18:47:38,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:47:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:38,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:47:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:47:38,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231639772] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:47:38,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:47:38,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2025-04-13 18:47:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123036767] [2025-04-13 18:47:38,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:47:38,979 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 18:47:38,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:47:38,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 18:47:38,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1058, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:47:38,980 INFO L87 Difference]: Start difference. First operand 32639 states and 97510 transitions. Second operand has 37 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 36 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:48:30,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:48:30,989 INFO L93 Difference]: Finished difference Result 50795 states and 152918 transitions. [2025-04-13 18:48:30,990 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2025-04-13 18:48:30,990 INFO L79 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 36 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 18:48:30,990 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:48:31,138 INFO L225 Difference]: With dead ends: 50795 [2025-04-13 18:48:31,138 INFO L226 Difference]: Without dead ends: 50743 [2025-04-13 18:48:31,156 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5380 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2464, Invalid=11108, Unknown=0, NotChecked=0, Total=13572 [2025-04-13 18:48:31,157 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 227 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-04-13 18:48:31,157 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 4 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-04-13 18:48:31,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50743 states. [2025-04-13 18:48:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50743 to 43581. [2025-04-13 18:48:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43581 states, 43580 states have (on average 2.9870812299219827) internal successors, (130177), 43580 states have internal predecessors, (130177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:48:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43581 states to 43581 states and 130177 transitions. [2025-04-13 18:48:59,092 INFO L79 Accepts]: Start accepts. Automaton has 43581 states and 130177 transitions. Word has length 27 [2025-04-13 18:48:59,092 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:48:59,093 INFO L485 AbstractCegarLoop]: Abstraction has 43581 states and 130177 transitions. [2025-04-13 18:48:59,093 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 36 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:48:59,093 INFO L278 IsEmpty]: Start isEmpty. Operand 43581 states and 130177 transitions. [2025-04-13 18:48:59,111 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:48:59,111 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:48:59,111 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:48:59,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2025-04-13 18:48:59,311 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2025-04-13 18:48:59,311 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:48:59,312 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:48:59,312 INFO L85 PathProgramCache]: Analyzing trace with hash 927726934, now seen corresponding path program 68 times [2025-04-13 18:48:59,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:48:59,312 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806837750] [2025-04-13 18:48:59,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:48:59,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:48:59,314 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:48:59,316 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:48:59,316 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:48:59,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:48:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:48:59,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:48:59,417 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806837750] [2025-04-13 18:48:59,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806837750] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:48:59,417 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884663013] [2025-04-13 18:48:59,417 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 18:48:59,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:48:59,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:48:59,419 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:48:59,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2025-04-13 18:48:59,443 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-04-13 18:48:59,450 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:48:59,451 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-13 18:48:59,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:48:59,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-04-13 18:48:59,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:48:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:48:59,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:48:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:48:59,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884663013] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:48:59,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:48:59,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2025-04-13 18:48:59,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314802134] [2025-04-13 18:48:59,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:48:59,883 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-04-13 18:48:59,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:48:59,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-04-13 18:48:59,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2025-04-13 18:48:59,883 INFO L87 Difference]: Start difference. First operand 43581 states and 130177 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:50:19,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 18:50:19,904 INFO L93 Difference]: Finished difference Result 71416 states and 215537 transitions. [2025-04-13 18:50:19,904 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-04-13 18:50:19,904 INFO L79 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-04-13 18:50:19,904 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 18:50:20,151 INFO L225 Difference]: With dead ends: 71416 [2025-04-13 18:50:20,152 INFO L226 Difference]: Without dead ends: 71397 [2025-04-13 18:50:20,175 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1670, Invalid=6162, Unknown=0, NotChecked=0, Total=7832 [2025-04-13 18:50:20,176 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 182 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:50:20,176 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 5 Invalid, 865 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:50:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71397 states. [2025-04-13 18:51:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71397 to 62509. [2025-04-13 18:51:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62509 states, 62508 states have (on average 3.011886478530748) internal successors, (188267), 62508 states have internal predecessors, (188267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:51:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62509 states to 62509 states and 188267 transitions. [2025-04-13 18:51:10,328 INFO L79 Accepts]: Start accepts. Automaton has 62509 states and 188267 transitions. Word has length 27 [2025-04-13 18:51:10,328 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 18:51:10,328 INFO L485 AbstractCegarLoop]: Abstraction has 62509 states and 188267 transitions. [2025-04-13 18:51:10,328 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 33 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 18:51:10,328 INFO L278 IsEmpty]: Start isEmpty. Operand 62509 states and 188267 transitions. [2025-04-13 18:51:10,349 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-04-13 18:51:10,349 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 18:51:10,349 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 18:51:10,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2025-04-13 18:51:10,550 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:10,550 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-13 18:51:10,550 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 18:51:10,550 INFO L85 PathProgramCache]: Analyzing trace with hash 68257758, now seen corresponding path program 69 times [2025-04-13 18:51:10,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 18:51:10,551 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287902233] [2025-04-13 18:51:10,551 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:51:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 18:51:10,553 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-04-13 18:51:10,556 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:51:10,556 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:51:10,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:51:10,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 18:51:10,666 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287902233] [2025-04-13 18:51:10,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287902233] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-13 18:51:10,666 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593321445] [2025-04-13 18:51:10,666 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 18:51:10,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:10,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 18:51:10,668 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-13 18:51:10,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2025-04-13 18:51:10,693 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-04-13 18:51:10,702 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-04-13 18:51:10,702 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-13 18:51:10,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 18:51:10,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-13 18:51:10,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-13 18:51:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-13 18:51:10,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-13 18:51:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 18:51:11,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593321445] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-13 18:51:11,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-13 18:51:11,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 36 [2025-04-13 18:51:11,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491454014] [2025-04-13 18:51:11,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-13 18:51:11,186 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-04-13 18:51:11,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 18:51:11,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-04-13 18:51:11,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1014, Unknown=0, NotChecked=0, Total=1332 [2025-04-13 18:51:11,186 INFO L87 Difference]: Start difference. First operand 62509 states and 188267 transitions. Second operand has 37 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2025-04-13 18:51:18,990 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2025-04-13 18:51:18,991 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2541 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1667, Invalid=5643, Unknown=0, NotChecked=0, Total=7310 [2025-04-13 18:51:18,991 INFO L437 NwaCegarLoop]: 2 mSDtfsCounter, 133 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-13 18:51:18,991 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 5 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-13 18:51:18,992 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-04-13 18:51:18,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2025-04-13 18:51:19,027 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2025-04-13 18:51:19,027 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 18:51:19,193 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-13 18:51:19,193 WARN L610 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (62509states) and FLOYD_HOARE automaton (currently 65 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (3669 states constructed, input type IntersectNwa). [2025-04-13 18:51:19,194 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-13 18:51:19,194 INFO L790 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-13 18:51:19,196 INFO L422 BasicCegarLoop]: Path program histogram: [69, 2, 1] [2025-04-13 18:51:19,198 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 18:51:19,198 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 18:51:19,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 06:51:19 BasicIcfg [2025-04-13 18:51:19,199 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 18:51:19,200 INFO L158 Benchmark]: Toolchain (without parser) took 852542.42ms. Allocated memory was 155.2MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 109.4MB in the beginning and 889.7MB in the end (delta: -780.2MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2025-04-13 18:51:19,200 INFO L158 Benchmark]: CDTParser took 1.23ms. Allocated memory is still 159.4MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:51:19,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.96ms. Allocated memory is still 155.2MB. Free memory was 109.4MB in the beginning and 95.0MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 18:51:19,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.97ms. Allocated memory is still 155.2MB. Free memory was 95.0MB in the beginning and 93.4MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 18:51:19,200 INFO L158 Benchmark]: Boogie Preprocessor took 24.69ms. Allocated memory is still 155.2MB. Free memory was 93.4MB in the beginning and 92.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 18:51:19,200 INFO L158 Benchmark]: RCFGBuilder took 319.28ms. Allocated memory is still 155.2MB. Free memory was 92.1MB in the beginning and 69.2MB in the end (delta: 22.9MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 18:51:19,200 INFO L158 Benchmark]: TraceAbstraction took 851970.37ms. Allocated memory was 155.2MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 68.9MB in the beginning and 889.7MB in the end (delta: -820.8MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2025-04-13 18:51:19,200 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.23ms. Allocated memory is still 159.4MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 203.96ms. Allocated memory is still 155.2MB. Free memory was 109.4MB in the beginning and 95.0MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.97ms. Allocated memory is still 155.2MB. Free memory was 95.0MB in the beginning and 93.4MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.69ms. Allocated memory is still 155.2MB. Free memory was 93.4MB in the beginning and 92.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 319.28ms. Allocated memory is still 155.2MB. Free memory was 92.1MB in the beginning and 69.2MB in the end (delta: 22.9MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 851970.37ms. Allocated memory was 155.2MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 68.9MB in the beginning and 889.7MB in the end (delta: -820.8MB). Peak memory consumption was 1.8GB. 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: 77]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while NwaCegarLoop was constructing difference of abstraction (62509states) and FLOYD_HOARE automaton (currently 65 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (3669 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (62509states) and FLOYD_HOARE automaton (currently 65 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (3669 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while NwaCegarLoop was constructing difference of abstraction (62509states) and FLOYD_HOARE automaton (currently 65 states, 37 states before enhancement),while ReachableStatesComputation was computing reachable states (3669 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 33 edges, 3 error locations. Started 1 CEGAR loops. OverallTime: 851.9s, OverallIterations: 72, TraceHistogramMax: 4, PathProgramHistogramMax: 69, EmptinessCheckTime: 0.6s, AutomataDifference: 556.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10184 SdHoareTripleChecker+Valid, 20.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10184 mSDsluCounter, 563 SdHoareTripleChecker+Invalid, 16.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 409 mSDsCounter, 3407 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54344 IncrementalHoareTripleChecker+Invalid, 57751 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3407 mSolverCounterUnsat, 154 mSDtfsCounter, 54344 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7871 GetRequests, 3581 SyntacticMatches, 127 SemanticMatches, 4163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110430 ImplicationChecksByTransitivity, 38.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62509occurred in iteration=71, InterpolantAutomatonStates: 3331, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 254.3s AutomataMinimizationTime, 71 MinimizatonAttempts, 222220 StatesRemovedByMinimization, 71 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 23.8s InterpolantComputationTime, 3167 NumberOfCodeBlocks, 3153 NumberOfCodeBlocksAsserted, 343 NumberOfCheckSat, 4506 ConstructedInterpolants, 0 QuantifiedInterpolants, 26211 SizeOfPredicates, 573 NumberOfNonLiveVariables, 6920 ConjunctsInSsa, 854 ConjunctsInUnsatCore, 206 InterpolantComputations, 5 PerfectInterpolantSequences, 466/2570 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